Back to Main Page T6TR 50 Watt VHF Multimode Transceiver This documentation is applicable to transceivers at Mod strike 7 Select Topic Specification Operation Installation Maintenance Approvals and Standards
Back to Transceiver Main Page Approvals and Standards T6TR VHF 50 Watt Transceivers Approvals: The equipment is designed to meet the essential requirements of Directives 1999/5/EC, 89/336EEC as amended by Directive 93/68/EEC, and 72/23/EEC. Standards: The following standards are applied: EMC EN 301 489-1; EN 301 489-22. Health & Safety, EN 60950, CAN/CSA-C22.2 No. 60950, UL 60950. Radio EN 300 676, IC RSS141, FCC part 15 and 87. Telecom CS-03.
Back to Transceiver Main Page Specification This document provides specifications applicable to the T6TR VHF Multimode Transceiver.
Back to Transceiver Main Page General Specification The general specification applies to a transceiver irrespective of the selected operating mode. Separate listings are given for AM modes, Mode 2 and Mode 3. Frequency Range The T6TR VHF Multimode Transceiver is available in two variants as listed below: ❑ The B6550/NB/50 that operates within the frequency band 118 to 136.975 MHz. ❑ The B65500/WB/50 that operates within the frequency band 112 to 155.975 MHz.
Back to Transceiver Main Page Power Requirements The transceiver operates from an ac mains supply, or a dc input supply. When both supplies are connected, the dc input acts as an automatic backup for the ac mains. ac input supply The transceiver operates from a 48 to 62 Hz single-phase ac supply and automatically adjusts to operate from any supply voltage ranging from 110 Vac to 240 Vac ±10%. The power consumption figures are given in Table 1.
Back to Transceiver Main Page Ventilation The transceivers are cooled by an integral fan, which normally runs at half speed. At an RF PA temperature of 45°C this is increased to full speed and at 40°C it reduces to half speed again. The transceivers also include an additional temperature controlled fan contained in the power supply. Warm up time All variants are fully operational to specification within 20 seconds after switch on.
Back to Transceiver Main Page AM Modes Introduction The transceiver can operate in AM-Voice mode and AM-MSK mode. The following specifications apply to both modes unless stated otherwise. Transceiver Tx RF Characteristics RF Power Output The RF carrier output power is adjustable in 1 W steps from 5 W to 50 W (as an option, the maximum selectable power can be limited).
Back to Transceiver Main Page Intermodulation Intermodulation products, caused by an interfering signal with the same power as the transmitter isolated by 30 dB, are at least -40 dBc at ≥±150 kHz and -50 dBc at ≥±500 kHz. Transceiver Rx RF Characteristics Sensitivity 118 to 136.975 MHz 112 to 117.975 MHz and 137 to 155.975 MHz 12 dB SINAD for -107 dBm 30% modulated. 12 dB SINAD for -105 dBm 30% modulated Notes ... (1) All references to SINAD in this document include ITU-T recommendation P.53 weighting.
Back to Transceiver Main Page Cross-modulation rejection 95 dB or greater (reference 30 dB SINAD and degraded by 10 dB) in the presence of a 30% modulated unwanted signal spaced at 200 kHz from the channel frequency. 105 dB or greater (reference 30 dB SINAD and degraded by 10 dB) in the presence of a 30% modulated unwanted signal spaced at 3 MHz.
Back to Transceiver Main Page Frequency Response 25 kHz channel spacing 8.33 kHz channel spacing Distortion 25 kHz channel spacing 8.33 kHz channel spacing The variation in frequency response with reference to a 1 kHz signal is within +0.5 dB and -1.5 dB across the frequency range 300 to 3400 Hz. The response is also less than -20 dB at 100 Hz and below, and less than -30 dB at 4 kHz and above. The variation in frequency response with reference to a 1k Hz signal is within +0.5 dB and -1.
Back to Transceiver Main Page Frequency response 25 kHz channel spacing The variation in frequency response with reference to a 1 kHz signal, is within +1 dB and -2 dB across the frequency range 300 to 3400 Hz. The response is less than -20 dB for frequencies at or below 100 Hz, and less than -30 dB at 4 kHz and above. 8.33 kHz channel spacing The variation in frequency response with reference to a 1 kHz signal, is within +1 dB and -2 dB across the frequency range 350 to 2500 Hz.
Back to Transceiver Main Page AM-Voice Voice can be connected to the transceiver via the front panel microphone connector. Voice can also be connected via the line inputs. Line level setting from -30 to +10 dBm. PTT Time-Out The time-out period is adjustable from 2 to 510 seconds in 2 second steps or can be disabled. Tranceiver Rx Control AM-Voice Audio Outputs The transceiver’s outputs are the remote audio line output, the headset output and the loudspeaker.
Back to Transceiver Main Page Mode 2 Introduction This section gives the transceiver’s specification applicable to Mode 2 operation. Mode 2 parameters are identical to AM-Voice mode with the following exceptions: Transceiver Tx RF Characteristics RF Power Rise Time The transceiver produces more than 90% of full power output within the first 2 symbols of the power stabilization segment, which is the first segment of the training sequence and consists of 4 symbols each representing 000.
Back to Transceiver Main Page Transceiver Rx RF Characteristics Sensitivity The transceiver has a sensitivity better than -102dBm for 1x10-3 Bit Error Rate (BER) with Reed Solomon Decoding off. Channel Spacing Mode 2 channel spacing is 25 kHz. IF Selectivity At ±11 kHz from the centre frequency, the signal is attenuated by less than 6 dB. At ±25 kHz from the centre frequency the signal is rejected by more than 80 dB.
Back to Transceiver Main Page Mode 3 Introduction This section gives the transceiver’s specification applicable to Mode 3 operation. Mode 3 parameters are identical to AM-Voice mode with the following exceptions: Transceiver Tx RF Characteristics RF Power Rise Time The transceiver produces more than 90% of full power output within the first 2 symbols of the power stabilization segment, which is the first segment of the training sequence and consists of 4 symbols each representing 000.
Back to Transceiver Main Page Transceiver Rx RF Characteristics Sensitivity The transceiver has a sensitivity better than -102dBm for 1x10-3 Bit Error Rate (BER) with Reed Solomon Decoding off. In order to improve co-location performance where maximum sensitivity cannot be realized due to large unwanted signals, the transceiver’s sensitivity can be reduced by 6 dB. This is achieved by switching on the 6 dB RF pre-attenuator from the front panel menu system. Channel Spacing Mode 3 channel spacing is 25 kHz.
Back to Transceiver Main Page Operation This document describes the controls, indicators, setting up and operating instructions applicable to the T6TR VHF Multimode Transceiver.
Back to Transceiver Main Page Controls and Indicators This part details the purpose of all controls and indicators of the T6TR transceivers. Front Panel The front panel’s controls, indicators and connectors are shown below and detailed in the following paragraphs. LCD Scroll Switch READY ALARM RECEIVE TRANSMIT REFERENCE F r e q 1 1 8 .0 0 0 M H z Ch 100 +7.
Back to Transceiver Main Page Ready Indicator A green indicator that lights when the transceiver is ready for use and no BIT faults have been detected. Standby Indicator A red indicator that lights when the transceiver is in standby mode. When in standby mode, most of the radio's circuits are inactive, the front panel LCD is blanked, and the transceiver cannot be keyed.
Back to Transceiver Main Page Table 2 Headset/Microphone/Diagnostics Connector - PC Connections Pin Number Input or Output Signal Description 2 Transmit data Output RS232, 115200 baud, 8 data bits, 1 stop bit, no parity, no handshaking. 4 Receive data Input RS232, 115200 baud, 8 data bits, 1 stop bit, no parity, no handshaking. 7 Ground - 0 V. Rear Panel Power Switch The rear panel's power switch is a 2-way rocker switch used to select between power on, and standby.
Back to Transceiver Main Page Setting Up and Operation Introduction Setting up the transceiver involves selecting various parameters using the Virtual Front Panel (VFP), through a Multi-Access Remote Control (MARC) system, from a T6 controller, or from the transceiver’s front panel. The transceiver can be configured for remote or local use. Table 11 on page 35 details the functions and parameters that can be set from all these sources.
Back to Transceiver Main Page Screen Protocol The following protocol is applicable to all screens described in this document. Main Screen During normal transceiver operation, the Main screen, an example of which is shown below, is displayed. F r e q 1 1 8 . C h 1 0 0 M o d e A M V o l I I I 0 0 0 M H z + 7 . 3 k H z V o i c e I I I I I I I Switch Refers to the front panel Scroll/Select switch.
Back to Transceiver Main Page F r e q 1 1 8 . 0 0 0 M H z C h 1 0 0 M o d e A M V o l I I I V o i c e I I I I I I I Control Screen Menu Lock Screen Configure the transceiver’s operating parameters, access the BIT facility or view the software configuration. (see page 8) Main Screen Displayed during normal transceiver operation with the transceiver unkeyed.
Back to Transceiver Main Page Menu Lock Screen A security facility available only from the VFP allows the transceiver's front panel to be ‘locked’. When this facility is active, no operational settings can be made from the front panel until an ‘unlock’ command is sent from the VFP. The following screen is displayed when ‘lock’ is active, and the front panel switch is pressed.
Back to Transceiver Main Page Notes for Setting Up the Transceiver The following notes should be read before setting up the transceiver. They advise on the special frequency display when using 8.33 kHz channel spacing, and give guidance on the optimum line level settings. Note that for operation in the United States of America, this equipment is certified only for operation using 25 kHz channel spacing. Front Panel Display for 25 kHz and 8.
Back to Transceiver Main Page Table 4 Relationship Between Line Level, VOGAD Threshold and Mute Threshold Line Level Setting (dBm) Average Speech Level (dBm) Sine Wave Level (dBm) VOGAD Threshold (dBm) Mute Threshold (dBm) +10 +10 +20 0 -5 +5 +5 +15 -5 -10 0 0 +10 -10 -15 -5 -5 +5 -15 -20 -10 -10 0 -20 -25 -15 -15 -5 -25 -30 -20 -20 -10 -30 -35 -25 -25 -15 -35 -40 -30 -30 -20 -40 -45 Output Line Level Setting The output line level setting displayed on the f
Back to Transceiver Main Page Changing the Transceiver’s Operating Frequency The transceiver’s frequency can be changed in two ways: either from the frequency screen, or by recalling a preset channel. This procedure details using the Frequency screen. (1) From the Control screen, select frequency to display the Frequency screen. (2) Turn the switch to highlight the digit to be changed, then press the switch. (3) Turn the switch until the required digit is shown, then press the switch.
Back to Transceiver Main Page To Store and Recall Frequency Channels Up to 100 frequency channels can be stored in the transceiver. To store a Channel Frequency (1) From the Control screen, select Channel to display the Channel screen. Highlight Channel, press the switch and then turn it until the required channel number is displayed; press the switch. C h F r 1 0 0 e q R e c a 1 2 1 .
Back to Transceiver Main Page To Initiate a BIT Test Use the following procedure to initiate an interruptive BIT test from the transceiver's front panel. A BIT test cannot be initiated while the transceiver is keyed. After a BIT test has been run, the BIT screen is displayed (see AM-Voice and AM-MSK BIT Screen on page 28). An interruptive BIT test cannot be initiated in Mode 2 or Mode 3. During an interruptive BIT test, the transceiver radiates modulated carrier waves at the set power.
Back to Transceiver Main Page T e s t S t a t u s P A S S O K (5) Selecting OK takes the user back to the BIT screen. T e s t S t F A I a t u s L O K (6) Selecting OK takes the user back to the BIT screen. The user can then scroll through the screen to check out transceiver parameters for failure.
Back to Transceiver Main Page Standby Mode Standby mode is a power saving feature that can be used for non-operational transceivers. When in standby mode, most of the transceiver's circuits are inactive, the LCD is blanked, and the transceiver cannot be keyed. To put the transceiver into standby mode, use the following procedure. When the transceiver is in Standby mode, the red front panel Standby indicator is lit. To Enter Standby Mode (1) From the Control screen select Standby.
Back to Transceiver Main Page Settings Operational settings for the T6TR VHF transceiver are configured at the front panel, through the VFP, and through an associated MARC system (or compatible control system). Some settings can also be made remotely via a T6 controller. The Settings screen is entered from the Control screen. The settings that can be selected at the front panel Settings screen are: ❑ Mode - either AM-Voice, AM-MSK, Mode 2 or Mode 3.
Back to Transceiver Main Page Table 6 Operational Settings from the Front Panel Parameter Mode Adjustment Range Factory Default Setting Further Reference Menu lock screen All Locked or unlocked Unlocked page 8 Enter standby mode All Yes or No - page 15 Exit standby mode All Yes or No - page 15 Set mode of operation All AM-voice, AM-MSK, Mode 2 or Mode 3 AM-voice page 16 Set polarities AM-Voice AM-MSK STD or INV STD page 24 Band edges All NB model 118.000 to 136.
Back to Transceiver Main Page Table 6 Operational Settings from the Front Panel (Continued) Mode Parameter Adjustment Range Factory Default Setting Further Reference Audio AGC AM-Voice On or Off On page 19 Loudspeaker AM-Voice On or Off On page 19 Step AM-Voice 8.
Back to Transceiver Main Page AM-Voice Mode Settings Screen The AM-Voice mode setting screen is a accessed from the Settings screen. Use the Scroll/Select switch to select the parameter, then enter the required setting(s). Adjustments P o w e r 5 0 W RF power between 5 W to 50 W. L i n e I n - 1 3 d B m Audio line in level between -30 to +10 dBm. L i n e O u t - 1 3 d B m Audio line out level between -30 to +10 dBm.
Back to Transceiver Main Page Adjustments S t e p M i c P A S S I K e y E x i 2 5 k H z P r i o r i t t < < L o c a l R e m o t R e m P T T e t S e l f P T T < < - L - R Active or Passive. Local-remote or Remote-local. > > E N Enabled or Disabled. P T T P h a n E x i y V E 25 kHz, 8.33 kHz or both. R e c e i v e E N Enabled or Disabled. E N Enabled or Disabled. > > O F F On or Off.
Back to Transceiver Main Page AM-MSK Mode Settings Screens The AM-Voice mode setting screen is a accessed from the Settings screen. Use the Scroll/Select switch to select the parameter, then enter the required setting(s). Adjustments P o w e r 5 0 W RF power between 5 W to 50 W. L i n e I n - 1 3 d B m Audio line in level between -30 to +10 dBm. L i n e O u t - 1 3 d B m Audio line in level between -30 to +10 dBm.
Back to Transceiver Main Page Squelch Setting Options The transceiver’s squelch facility is configured from the AM-Voice, or AM-MSK Settings screen. The following fields are applicable to squelch operation. Sql Defeat. Squelch. The squelch defeat facility can be set to on or off. ❑ When set to on, the squelch facility does not operate. ❑ When set to off the transceiver’s squelch facilities are available. The squelch field sets the threshold; the default setting is -107 dBm.
Back to Transceiver Main Page Mode 2 Settings Screen This is an advisory screen. Pressing OK returns the user to the Main screen. M o d e 2 a r e p a r a m e t e r s e t v i a t i e r f a c e H L D C n t s h e O K Mode3 Settings Screen This is an advisory screen. Pressing OK returns the user to the Main screen.
Back to Transceiver Main Page Polarities Screens AM-Voice and AM-MSK A number of remote indication and control signals can be hard-wire connected to the transceiver. The following paragraphs detail the signals applicable to each operational mode of the transceiver. The Polarities screen is accessed from the Settings screen.
Back to Transceiver Main Page Table 8 AM-Voice and AM-MSK Polarity Settings Signal Connector Polarity set to STD Polarity set to INV Ready Out Facilities, pin 13 An open collector grounded output when the radio is ready to transmit and no BIT faults are detected. An open collector high impedance output when the radio is ready to transmit and no BIT faults are detected. E-BIT In Facilities, pin 2 TTL input. 0 V indicates an external fault. TTL input. 5 V indicates an external fault.
Back to Transceiver Main Page Table 8 AM-Voice and AM-MSK Polarity Settings Signal Connector Polarity set to STD Polarity set to INV FAC squelch out Facilities, pin 5 Normally open relay contact that closes when the squelch circuits are defeated (aircraft calling). The relay contact can be configured to switch any potential between -60 V and + 60 Vdc. Normally closed relay contact that opens when the squelch circuits are defeated (aircraft calling).
Back to Transceiver Main Page Mode 2 and Mode 3 Polarity Settings R e a d y O u t E - B I T I E x t V S W R E x i Each of the three polarity settings applicable to S T D Mode 2 and Mode 3 can be set to the default STD (standard) setting or INV (inverted). S T D n I n S T D t > > The signal connections are shown in Table 9 along with the conditions when STD or INV is selected.
Back to Transceiver Main Page AM-Voice and AM-MSK BIT Screen The AM-Voice and AM-MSK BIT screen is a accessed from the Control screen. Further information on the BIT screen can be found in the Maintenance section. B I T I E T I A C E x n i t D C a t 0 0 0 0 0 : S u p p l i i e Select to initiate BIT test. 0 0 h r y O N t S u p p l y O N y h 2 8 V L o c k E x i t P A T e m p P A C o o l P A S S < < Shows state of ac supply (On or Off).
Back to Transceiver Main Page I F F i A u d i l t e r s o D S P 1 E x i t P A S S Pass, Fail or Not Tested. P A S S Pass, Fail or Not Tested. P A S S Pass or Fail. < < D S P 2 > > P A S S Pass or Fail. X i l i n x 1 P A S S Pass or Fail. X i l i n x 2 P A S S Pass or Fail. E x i t < < E E P R O M S t a r C a l i E x i t t U p b r a t B I P w r T M A R C E x i o n P A S S Pass or Fail. P A S S Pass or Fail. P A S S Pass or Fail.
Back to Transceiver Main Page Mode 2 and Mode 3 BIT Screen The Mode 2 and Mode 3 BIT screen is accessed from the Control screen. E T I 0 0 0 0 0 : 0 0 h r s Shows elapsed time 0:00 to 99999:59 (Hrs:Min). A C S u p p l y O N Shows state of ac supply (On or Off). D C S u p p l y O N On or Off. E x i t > > S u p p l S y n t y h 2 8 V L o c k P A T e m p E x i t P A C o o P A S S 5 0 d e g C < < l i n g V S W R L o o p E x i E r r o r t Shows value of dc supply.
Back to Transceiver Main Page H D L C A C T I V E Active or Inactive. T 1 / A C T I V E Active or Inactive. E 1 B a c k E x i t Active or Inactive.
Back to Transceiver Main Page Software Configuration Screens Software configuration screens are as follows: T 6 V H F 1 1 8 - E x i 5 0 W 1 3 6 . T X t B o o t > > S o f t w a r 6 5 - x x x x x x x x / E x i t B a s e S o f t w a r x x x x x x x x / E x i t 6 5 [ D e s c r t F i l l 6 5 [ t F i l [ p t i S o f i 2 p t i S o f t i p t i > > 65-xxxxxxxx represents the software part number and /v v represents its version. e v v > > Current mode running.
Back to Transceiver Main Page F i l 6 5 [ 3 l 6 5 - S o f t w a r x x x x x x x x / D e s c r F i [ l l i 4 p t i S o f i p t i 65-xxxxxxxx represents the software part number and /v v represents its version. e 65-xxxxxxxx represents the software part number and /v v represents its version. v v o n ] t w a r x x x x x x x x / D e s c r e v v o n ] Band Edges The frequency range of the transceiver is 118 to 136.975 MHz for the B6550/NB version, or 112 to 155.
Back to Transceiver Main Page BIT Status Warning Screens The following shows some example BIT screens. These screens alternate with the Main Screen when an alert or alarm condition is present. Only the parameters causing the alert or alarm are displayed, and if both an alert and alarm condition exists simultaneously only the alarm information is displayed. If multiple parameters are signalling an alert or alarm condition, multiple screens are used to display the status alternating with the Main Screen.
Back to Transceiver Main Page Table 11 Functions and Parameters Function Front Panel VFP MARC T6 Controller T1/E1 HDLC Default Setting ✔ ✔ ✔ ✔ ✔ ✔ 118.
Back to Transceiver Main Page Table 11 Functions and Parameters (Continued) Function Front Panel VFP MARC T6 Controller T1/E1 HDLC Default Setting Set squelch defeat on or off ✔ ✔ ✔ ✔ ✗ ✗ Off Set squelch noise compensation on or off ✔ ✔ ✔ ✗ ✗ ✗ On Set squelch carrier override on or off ✔ ✔ ✔ ✗ ✗ ✗ Off Audio AGC on or off ✔ ✔ ✔ ✗ ✗ ✗ On Loudspeaker on or off ✔ ✔ View state ✗ ✗ ✗ On Set frequency step size (AM-Voice only) ✔ ✔ ✗ ✗ ✗ ✗ 25 kHz Set micropho
Back to Transceiver Main Page Table 11 Functions and Parameters (Continued) Function Front Panel VFP MARC T6 Controller T1/E1 HDLC Default Setting Scramble vector ✗ ✔ ✗ ✗ ✗ ✔ 4D4B 19787 Tx enable ✗ ✔ ✗ ✗ ✗ ✔ On ✔ ✔ View state ✗ ✗ ✗ STD Set PTT input polarity (AM modes only) ✔ ✔ View state ✗ ✗ ✗ STD Set phantom PTT input polarity (AM modes only) ✔ ✔ View state ✗ ✗ ✗ STD Set PTT reference voltage (AM modes only) ✔ ✔ View state ✗ ✗ ✗ +14 V Set PTT output
Back to Transceiver Main Page Table 11 Functions and Parameters (Continued) Function Front Panel VFP MARC T6 Controller T1/E1 HDLC Default Setting Squelch output polarity at the Facilities connector ✔ ✔ ✗ ✗ ✗ ✗ STD (n/o) Phantom squelch output polarity ✔ ✔ ✗ ✗ ✗ ✗ STD (n/o) Squelch defeat input polarity ✔ ✔ ✗ ✗ ✗ ✗ STD Band Edges: Set band edges 118.000 & 136.975 MHz ✔ ✔ ✗ ✗ ✗ ✗ or 112.000 & 155.
Back to Transceiver Main Page Installation Procedures This document gives the installation procedures applicable to the T6TR VHF Multimode Transceiver.
Back to Transceiver Main Page WARNING Dangerous Voltages The instructions given in this section involve connecting dangerous voltages to the transceiver. The instructions detailed in this document must be carried out only by suitably qualified personnel. WARNING Antenna Radiation The antenna used with the transceiver must be installed such that the resultant radiated field strength is below 10 W/m² in areas normally accessible to personnel.
Back to Transceiver Main Page Fuses and Connectors The following list details the radio’s supply fuses and the connectors. Some of the connectors (depending on your particular configuration) are required during installation.
Back to Transceiver Main Page Initial Inspection of the Transceiver On receipt of the transceiver from Park Air, remove all transit packaging and check that there is no transit damage. If damage is evident, contact Park Air immediately and retain the original transit packaging. The following items are included with the transceiver: ❑ Item 1. One copy of the T6 VHF Radios User Guide CD (part number 31-36T62VCD) ❑ Item 2. Packing box.
Back to Transceiver Main Page Changing the Antenna Configuration (if required) WARNING Dangerous Voltages Dangerous voltages are present within the transceiver. Care must be taken by personnel to avoid accidental contact with exposed circuitry when the bottom cover is removed and power is applied to the radio Proceed as follows: (1) Remove the 15 captive screws securing the bottom cover to the mainframe. (2) With the cover removed locate the PA Control/Rx RF module.
Back to Transceiver Main Page Fitting a Radio into an Equipment Cabinet Caution Mechanical Support It is essential that the chosen mechanical installation provides adequate support along the depth (front to rear) of the unit. The transceiver must not be supported by the front panel; doing so can cause damage. The transceiver can be installed on telescopic slides, or on fixed runners, within a standard 483 mm (19 inch) equipment rack.
Back to Transceiver Main Page Connecting the Remote Equipment Connection of external equipment depends on the configuration required. These configurations are as follows: ❑ T6TR transceiver configured for local operation ❑ T6TR transceiver configured for remote operation ❑ T6TR transceiver configured for use with MARC ❑ T6TR Mode 2 configuration ❑ T6TR Mode 3 configuration. Fig 4 to Fig 9 illustrate the various configurations.
Back to Transceiver Main Page Fig 5 Either a common Tx/Rx antenna or separate Tx and Rx antennas can be used T6T Transceiver Rx Audio MARC Connector Squelch Unregulated supply RS 422 Data TX/RX Antenna Connector MARC Audio Connector Tx Audio PTT RX Antenna Connector Reference Connector Mic/Headset/Diagnostics Connector Frequency Counter required only for maintenance Mic/Headset for engineering use Note: The unregulated supply and RS422 data connections may be used when connecting to remote con
Back to Transceiver Main Page Fig 6 Either a common Tx/Rx antenna or separate Tx and Rx antennas can be used T6TR Transceiver RSE2 Equipment Connector 1 Rx Audio Squelch Unregulated supply TX/RX Antenna Connector MARC Connector RS422 data Equipment Connector 3 Tx Audio PTT MARC Audio Connector RX Antenna Connector Reference Connector Headset/Microphone/Diagnostics Connector Mic/Headset for engineering use Frequency Counter required only for maintenance Shows single channel connections at RSE2
Back to Transceiver Main Page Fig 7 RSE2 MARC Connector Receive lines + data Equipment Connector 1 T6TR Transceiver MARC Audio Connector MARC Connector Transmit lines Receive lines + data Equipment Connector 3 Equipment Connector 2 T6TR Transceiver MARC Audio Connector MARC Connector Transmit lines Receive lines + data Equipment Connector 4 Equipment Connector 5 T6TR Transceiver MARC Audio Connector MARC Connector Transmit lines Equipment Connector 7 Receive lines + data Equipment Connec
Back to Transceiver Main Page Table 2 Transceiver to RSE2 Equipment Connector 1, 2, 5 or 6 Transceiver MARC 9-Way D-type Connector Pin Number Signal at Transceiver Signal at RSE2 RSE2 Equipment Connector Pin Number 1 Ground Ground 1 2 Audio line out (+) Audio line L1 2 3 Audio line out (-) Audio line L2 3 4 Squelch indication Mute indication 4 5 Unregulated supply output Unregulated supply input 5 6 Data in (+) Data out (+) 6 7 Data in (-) Data out (-) 7 8 Data out (+) Dat
Back to Transceiver Main Page Fig 8 Either a common Tx/Rx antenna or separate Tx and Rx antennas can be used T6TR Transceiver TX/RX Antenna Connector Reference Connector Headset/Microphone/Diagnostics Connector RX Antenna Connector HDLC Connector Mode 2 Network Computer T1/E1 Connector Facilities Connector Control and data Connects to the Reference connector Connects to the eadset/Diagnostics connector Frequency Counter required only for maintenance Fig 8 T6TR Mode 2 Configuration Page 12
Back to Transceiver Main Page Fig 9 Either a common Tx/Rx antenna or separate Tx and Rx antennas can be used T6TR Transceiver TX/RX Antenna Connector RX Antenna Connector T1/E1 Connector Mode 3 Network Computer Reference Connector Mic/Headset/Diagnostics Connector Control and data Frequency Counter required only for maintenance Laptop (or PC) required only for maintenance Fig 9 T6TR Mode 3 Configuration Page 13
Back to Transceiver Main Page Connectors Front and rear panel connector pin-outs are detailed in Table 4 to Table 11. The Reference connector is described in text. Front Panel Connectors The front panel has two connectors; Headset/Microphone/Diagnostics connector and Reference connector. These are illustrated in Fig 10. Fig 10 Fig 10 Front Panel Headset/Microphone/Diagnostics Connector The Headset/Microphone/Diagnostic connector is shown in Table 4.
Back to Transceiver Main Page Rear Panel Connectors The rear panel connectors are shown in Fig 11.
Back to Transceiver Main Page Antenna Connectors The antenna connectors are N-type sockets suitable for connecting 50 ohm antennas. MARC Connector The MARC connector is a 9-way D-type socket used for connecting to a MARC system via an RSE2. The connector pin-out is detailed in Table 5. Table 5 MARC Connector Pin Number Signal Characteristic 1 Ground 0V 2 Audio line out (+) Balanced 600 ohm, -20 to +20 dBm.
Back to Transceiver Main Page MARC Audio Connector The MARC Audio connector is an 8-way RJ48 socket. The connector pin-out is detailed in Table 6. Table 6 MARC Audio Connector Pin Number Signal Characteristic 1 Audio line out (-) 2 Audio line out (+) Balanced 600 ohm -20 and +20 dBm. Phantom squelch (see Fig 14) - solid-state relay, +60 to -60 V, ac or dc, 100 mA max, configurable n/o or n/c.
Back to Transceiver Main Page Fig 13 T6TR Transceiver Internal Sensing Circuit Audio lines with phantom PTT signal superimposed Reference can be configured as +14 V, 0 V or -14 V from the Polarities screen. With STD selected, PTT active when input differs from reference by more than ±10 V. PTT inactive when input differs from reference by less than ±1 V. With INV selected, PTT active when input differs from reference by less than ±1 V. PTT inactive when input differs from reference by more than ±10 V.
Back to Transceiver Main Page MARC Data Connector The MARC Data connector is an 8-way RJ48 socket. The connector pin-out is detailed in Table 7. Table 7 MARC RJ48 Data Connector Pin Number Signal Characteristic 1 2 Data in Data in + RS422 differential asynchronous data, 9600 baud, 8 data bits, 1 stop bit, no parity, no handshaking. 3 Not connected - 4 5 Data out + Data out - RS422 differential asynchronous data, 9600 baud, 8 data bits, 1 stop bit, no parity, no handshaking.
Back to Transceiver Main Page HDLC Connector The HDLC connector is an 8-way RJ48 socket used for connecting to a Mode 2 network computer. The connector pin-out is detailed in Table 9. Table 9 HDLC Connector Pin Signal Characteristic 1 HDLC RX A (input) 2 HDLC RX B (input) 3 HDLC CL A (output) 4 HDLC TX B (output) 5 HDLC TX A (output) 6 HDLC CL B (output) RS422 differential synchronous data, 128 kbytes per second ±50 ppm. 7 Ground 0 V. 8 Unregulated Supply (output) 21.
Back to Transceiver Main Page Facilities Connector The Facilities connector is a 15-way D-type filtered socket used for connecting to associated parts of a system. The connector pin-out is detailed in Table 11. Table 11 Facilities Connector Pin Number Signal Characteristic 1 Ground 0 V. 2 E-BIT (input) An external BIT input that connects from any ancillary equipment having a compatible BIT alarm output.
Back to Transceiver Main Page Fitting the Correct AC Input Fuse The mains input fuse F2 is an integral part of the rear panel ac connector (see Fig 11). The fuse type must be correct for the local mains supply. Check the fuse fitted conforms to that detailed in Fig 15. Fig 15 Earth Line For a mains input in the range 110 to 120 Vac, fuse F2 should be rated T4A, 125V, UL. Neutral For a mains input in the range 110 to 240 Vac, fuse F2 should be rated T4A, 250V, IEC.
Back to Transceiver Main Page WARNING Earth Connection This equipment must be earthed. The earth terminal of the ac connector should be used as the safety earth. An ac input connector (see Fig 11 and Fig 15) is fitted to the equipment’s rear panel. The cable used to connect between the equipment and the user’s ac power source should be 3-core (to IEC 227) rated 250 Vac at 8 amps, and have a minimum cross-sectional area of 1.0 mm2 per core.
Back to Transceiver Main Page Switching On WARNING Dangerous Voltages When the POWER SWITCH is set to the Standby position, dangerous voltages are still present in the transceiver's internal power supply circuitry. To ensure safe working, the transceiver must be isolated from the ac and dc input supplies. When installation is complete, the transceiver should be switched on at the rear panel 2-way rocker Power switch.
Back to Transceiver Main Page End of Document Page 25
Back to Transceiver Main Page Page 26
Back to Transceiver Main Page Maintenance This document gives the maintenance procedures applicable to the T6TR VHF Multimode Transceiver.
Back to Transceiver Main Page General Information This section provides the maintenance personnel with sufficient information to maintain and repair the T6TR VHF transceiver. The standard maintenance policy regards the transceiver as a Line Replacement Unit (LRU) which should be changed for a serviceable unit should a failure occur. Note that modules may be changed on the advice of Park Air Customer Support (see following contact details). Email address: Support@uk.parkairsystems.com.
Back to Transceiver Main Page Transceiver Variants Two variants of the T6TR VHF transceiver are available: ❑ B6550/NB/50. This transceiver frequency operating range is 118.000 to 136.975 MHz. Power output adjustable from 5 to 50 Watts. Frequency stability compliant with ICAO requirements for 2, 3 and 4-offset carrier applications ❑ B6550/WB/50. This transceiver frequency operating range is 112.000 to 155.975 MHz. Power output adjustable from 5 to 50 Watts.
Back to Transceiver Main Page Configurations The connectors used to configure the transceiver depend on the required operating mode. The purpose of each connector is detailed in the following text. Configuration details can be found in the Installation section of this document. Antenna Connector Used in all operating modes to connect the 50 ohm antenna feeder cable. Headset/Microphone/Diagnostics This is a dual purpose connector.
Back to Transceiver Main Page Maintenance Procedures WARNING Dangerous Voltages The instructions given in this section involve connecting dangerous voltages to the transceiver. The instructions detailed in this document must be carried out only by suitably qualified personnel. When an ac supply is connected, lethal voltages are present within the transceiver. Care must be taken by personnel to avoid accidental contact with exposed circuitry during maintenance or alignment procedures.
Back to Transceiver Main Page Introduction This part of the Maintenance section covers maintenance tasks that include schedule maintenance, dismantling and assembly instructions and fault finding. Due to the complexity of most modules the recommended policy is repair by replacement of the radio. However module replacement information is supplied in the event that Park Air Customer Support advises this may be done.
Back to Transceiver Main Page Schedule Maintenance Procedure The procedure, detailed in the following paragraphs, should be followed when carrying out schedule maintenance. Cleaning the Equipment Remove all dust and dirt from the equipment's exterior using the cleaning cloths and camel hair brush. Clean the front panel indicators and LCD face. Security of External Connections Check all external connections are secure and free from damage.
Back to Transceiver Main Page During an interruptive BIT test, the transceiver radiates modulated carrier waves at the set power. Users should therefore obtain the necessary authority before initiating a test. If the test is to be carried out with the antenna disconnected, ensure a load is fitted to the transceiver's Antenna (not Rx Antenna) connector. In order to test the line input stages, an internally generated 1 kHz tone is injected into the line input circuit.
Back to Transceiver Main Page AC and DC Change-over Check If both ac and dc input supplies are connected to the transceiver, carry out the following check: (1) Confirm that both ac and dc supplies are connected to the transceiver. Ensure that the rear panel Power switch is set to the I (on) position. (2) Confirm that the front panel Ready indicator is lit, the LCD is illuminated, and the transceiver is operational. (3) Switch off the ac supply from its source.
Back to Transceiver Main Page Dismantling and Assembly Instructions Introduction This topic provides the user with detailed instructions on the removal and replacement of modules and assemblies. Access to a PC loaded with VFP software, and a radio to PC serial interconnection lead, Park Air part number 17E12600001 is essential when carrying out these instructions. The transceiver’s modules and assemblies are accessed by removing the top and bottom covers.
Back to Transceiver Main Page Removing and Refitting the Processor Module The Processor module is located as shown in Fig 3. A module removal diagram is shown in Fig 4. Removal Before attempting to remove the Processor module, and if possible, save the equipment settings. To achieve this connect a PC, with the VFP software loaded, to the radio using the PC to Radio Interconnection Lead (Park Air part number 17E12600001). With the VFP software active, upload the radio settings to a specified file.
Back to Transceiver Main Page (2) Fit the 11 (Mod Strike 5 modules), 7 (Mod Strike 6 and 7 modules) M3 x 8 mm screws that secure the module to the transceiver’s mainframe, but leave them loose. (3) Using a nut spinner tool, tighten the four screwloc 8 mm-4-40 UNC screws and wavy washers that secure the connectors; then tighten the 11 (Mod Strike 5 modules), 7 (Mod Strike 6 and 7 modules) M3 x 8 mm screws that secure the module to the receiver’s mainframe.
Back to Transceiver Main Page Removing and Refitting the PSU Regulator Module The PSU Regulator module is located as shown in Fig 3. A module removal diagram is shown in Fig 5. Removal Before attempting to remove the PSU Regulator module, ensure that the transceiver is isolated from the ac and dc input supplies. Then proceed as follows: (1) Remove the transceiver’s top cover as described on page 10 (take heed of the warning).
Back to Transceiver Main Page (8) Switch power off at the transceiver using the rear mounted Power switch. Isolate the transceiver from the ac and/or dc supplies. (9) Refit the transceiver’s top cover (take note of repairs caution (1) on page 5 before carrying out this task). The transceiver can now be returned to service. Bottom Cover To remove the bottom cover, locate and unscrew the 15 captive screws securing the bottom cover to the mainframe.
Back to Transceiver Main Page Refitting To refit the PA Control/Rx RF module, proceed as follows: (1) Place the module in position. Ensure no wires are trapped by the module. (2) Fit the seven M3 x 8 captive washer screws that secure the module to the transceiver’s mainframe.
Back to Transceiver Main Page Antenna Configuration RX Antenna Connector CN7 CN12 PARK Antenna Configuration Connector CN12 PARK Connector CN7 Single Rx antenna CN13 (from PA Module) Dual CN13 (from PA Module) Rx antenna Antenna Configuration Page 16
Back to Transceiver Main Page Removing and Refitting the Power Supply The Power Supply is located as shown in Fig 3. A module removal diagram is shown in Fig 7. Removal Before attempting to remove the Power Supply, ensure that the transceiver is isolated from the ac and dc input supplies. Then proceed as follows: (1) Remove the transceiver’s top and bottom covers as described on page 10 and page 14 (take heed of the warnings on those pages). (2) Support the radio on its side.
Back to Transceiver Main Page Removing and Refitting the PA Module The PA module is located as shown in Fig 3. A module removal diagram is shown in Fig 8. Removal Before attempting to remove the PA module, ensure that the transceiver is isolated from the ac and dc input supplies. Then proceed as follows: (1) Remove the transceiver’s top and bottom covers as described on page 10 and page 14 (take heed of the warnings on those pages). (2) Remove CN3 from the PSU Regulator module.
Back to Transceiver Main Page Removing and Refitting the Front Panel Assembly PCB The Front Panel assembly PCB is located as shown in Fig 3. An assembly and PCB removal diagram is shown in Fig 9. Removal Before attempting to remove the Front Panel assembly PCB, ensure that the transceiver is isolated from the ac and dc input supplies. Then proceed as follows: (1) Remove the transceiver’s top and bottom covers as described on page 10 and page 14 (take heed of the warnings on those pages).
Back to Transceiver Main Page Removing and Refitting the Cooling Fan The cooling fan is at the rear of the PA module as shown in Fig 3. An assembly and removal diagram is shown in Fig 10. Removal Before attempting to remove the fan, ensure that the transceiver is isolated from the ac and dc input supplies. Then proceed as follows: (1) Disconnect the two-pin connector. (2) Remove fan's finger guard.
Back to Transceiver Main Page Virtual Front Panel (VFP) Virtual Front Panel (VFP) software is supplied on CD-ROM and is compatible with any PC or laptop running Windows 2000™ or Windows XP™. The VFP allows changes to a radio’s settings and channel information, it displays the current BIT state, displays BIT history, allows security locks to be set, and provides maintenance facilities. A radio can be set up using the front panel Scroll/Select switch and LCD, or by using the VFP.
Back to Transceiver Main Page Installing the VFP Software The VFP software is supplied by Park Air on CD-ROM. The software can be run from the Main page or installed on your PC via Explorer. To install the software onto your PC: (1) Using explorer, display the contents of the CD-ROM supplied by Park Air. Identify the file named S0473VXX.EXE. (2) Using the mouse, right click on the file S0473VXX.EXE and then select Copy. (3) Display the Windows desktop.
Back to Transceiver Main Page Settings Window This window lists all attributes that can be adjusted by the user. If any individual attribute is clicked on using the mouse, help information is displayed in the Status Information window showing the range of adjustment for that attribute. Click on the value and use the keyboard to amend it; press Enter to confirm the new value noting that the amended text is green until it is downloaded into the radio.
Back to Transceiver Main Page To Change the Transceiver’s Profile or Save a Profile (1) Using a radio to PC serial interconnection lead, Park Air part number 17E12600001, connect the radio’s front panel Headset/Microphone/Diagnostics connector to the PC’s Com Port 1 or Com Port 2 (note which Com Port is used). (2) Run up the VFP software and check that a blank VFP screen (as shown below) is displayed. Blank VFP Screen (3) At the Menu Bar, click on Serial Port and select either Com 1 or Com 2.
Back to Transceiver Main Page (6) Download the radio’s profile as shown on the VFP screen to either the radio, or to a file. To download into the radio, select or, or, Radio > Send > All Radio > Send > Settings Radio > Send > Channel To download to a file, select or, or, or, File > Send > All File > Send > Settings File > Send > Channel File > Send > BIT (7) Check that after downloading to a radio, no invalid parameters are returned (such parameters are displayed as red text).
Back to Transceiver Main Page To Calibrate the Transceiver (1) Connect a dummy load via a power meter to the transceiver’s Tx/Rx Antenna connector. (2) Remove the transceiver’s bottom cover. (3) Using a VFP to PC interconnection lead, Park Air part number 17E12600001, connect the radio’s front panel Headset/Microphone/Diagnostics connector to the PC’s Com Port 1 or Com Port 2 (note which Com Port is used). (4) Run up the VFP software and check that a blank VFP screen is displayed.
Back to Transceiver Main Page RV9 Fine Power Adjust Location of RV9 Page 27
Back to Transceiver Main Page Figs 1 to 10 follow Page 28
Fig 1 Back to Transceiver Main Page 1 Front View ANTENNA DANGER HIGH RF VOLTAGES CONNECT ANTENNA BEFORE USE T1/E1 HDLC MARC DATA MARC AUDIO AC SUPPLY MARC FACILITIES SUPPLY RX ANTENNA RATINGS INTERNALLY (SELECTABLE ) AC SUPPLY 48 - 62Hz ~ 110 - 240V ( + 10%) 4A POWER 400VA max DC SUPPLY FUSE F2 FUSE F2 110-240V T4A 250V IEC 110V - 120V T4A 125V UL FUSE F1 FUSE F1 21.
Fig 2 Back to Transceiver Main Page 2 Name Characteristic Front Panel Connections LED Alarm Name Open collector (5mA) Characteristic Name Connections Characteristic Microphone/ Diagnostics Front Panel CN1-1 * CN7C * CN7A ** Connections Processor CN4-1 Processor MARC Port CN6-1 1 Ground Pin Number +20 dBm to -20 dBm 600R Name CN4-2 CN1-2 LED Ready Open collector (5mA) CN2-1 1 Ground - Microphone 0V CN6-2 2 Line + CN4-3 CN1-3 LED Standby Open collector (5mA) CN2-2 2
Fig 3 Back to Transceiver Main Page 3 Processor Module Fan Transmit Antenna Connector Receive Antenna Connector Regulation Module VHF TR RF PA Module VHF TR PA Control & RX RF Module Power Supply Top view - Top Cover removed View on underside - Bottom Cover removed T6 Series 2 VHF Transceiver Module Location Diagram Front Panel Module Fig 3 Module Location Diagram
Fig 4 Back to Transceiver Main Page 4 PA CN 8 Fig 4 Processor Module - Removal and Refitting Detail
Fig 5 Back to Transceiver Main Page 5 Brown (L) Blue (N) Fig 5 PSU Regulator Module - Removal and Refitting Detail
Fig 6 Back to Transceiver Main Page 6 Fig 6 PA Control/Rx RF Module - Removal and Refitting Detail
Fig 7 Back to Transceiver Main Page 7 Fig 7 Power Supply - Removal and Refitting Detail
Fig 8 Back to Transceiver Main Page 8 Fig 8 PA Module - Removal and Refitting Detail
Fig 9 Back to Transceiver Main Page 9 Diagram A Diagram B Fig 9 Front Panel Assembly PCB - Removal and Refitting Detail
Fig 10 Back to Transceiver Main Page 10 Fig 10 Cooling Fan - Removal and Refitting Detail
