Type Acceptance Test Report Broad Band PCS Transceiver FCC ID: DNY0A5DATA1900 FCC Rule Part: 24E ACS Report Number: 03-0096-24TA Manufacturer: EMS Wireless Model: DataNex Installation and Operators Guide 5015 B.U.
EMS Wireless DataNex™ Data-20 Digital Radio User Reference Manual 2850 Colonnades Court NW Norcross, GA 30071 Phone: 770-582-0555 Fax: 770-729-0075
Table of Contents ii Document Number: Rev: A Last Saved NXE1 Manual Dwg # Section Data-20 DataNex Drawing No: ; Revision Levels: REV Revised / Released Reason A SN NEW EMS Wireless, DATA-20 Digital Radio
iii Table of Contents WARNINGS, CAUTIONS, AND GENERAL NOTES This product conforms to FCC Part 15. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Table of Contents iv Table of Contents 1 SYSTEM DESCRIPTION .......................................................................................................................1-1 1.1 Introduction ..................................................................................................................................................... 1-1 1.2 System Features ...................................................................................................................................
v Table of Contents 3.2.4 Screen Menu Tree Structure ...................................................................................................................... 3-3 3.3 Main Menu ....................................................................................................................................................... 3-4 3.3.1 Launch Screens..........................................................................................................................................
1 System Description 1.1 Introduction The DATA-20 is a spectrum-scalable point-to-point digital radio that can deliver 8Mbps of data. Advanced modulation and digital processing techniques allow one radio to deliver user-defined rates from 512 kbps to 8Mbps The product is an all-digital, open-architecture, modular system (see Figure 1-1 below). The versatility and power of the product comes from a complete range of “plug and play” personality modules. Figure 1-1.
System Description 1-2 Auto / Manual Power Control of up to 20 dB Built-in Auto Pin Diode Attenuator for powerful signals Accurate Digital Filtering for adjacent channel rejection 386 Processor-based controller Extensive LCD screen status monitoring Built-in BER Meter Built-in NMS Monitoring & Time Stamping Monitor up to 4 external Analog & Digital I/O Readout of RSL in dBm Completely modular 1.3 Typical Configurations 1.3.
1-3 System Description 1.3.3 Hot Standby (Protected) Operation The product in a hot standby configuration as depicted in Fig.1-2, using two DATA-20 radios and a TP64 transfer panel. Data-20 RADIO A DATA TP64 TRANSFER PANEL DATA CNTL TX RX ANTENNA DATA SWITCH/ TRANSFER LOGIC RX RF SPLITTER DATA CNTL RX TX RF RELAY DUPLEXER TX Data-20 RADIO B Figure 1-2. DATA-20 Hot Standby – Two Discrete Radios with Transfer Panel 1.
System Description 1-4 1.5 System Description (QAM) 1.5.1 Introduction The product is a full-duplex digital radio. The following sections describe the TX system, RX system, followed by sub-system components. Please reference the accompanying block diagrams for clarification. We will follow the typical end-to-end progression of a radio system starting with the TX baseband inputs, to the QAM modulator, followed by the upconversion process and the power amplifier.
1-5 System Description Figure 1-4. Location of theDATA-20Backplane and Power Amplifier The NMS/CPU card incorporates microprocessor and FPGA logic to configure and monitor the overall operation of the system via front panel controls, LCD screen menus, status LEDs and the bar graph display. Module settings are loaded into the installed cards and power-up default settings are stored in non-volatile memory. LCD screen menu software is uploaded into memory, providing field upgrade capability.
System Description 1-6 master clock provided by an OCXO (oven controlled crystal oscillator) that is accurate to within 0.1 ppm. IF Input 6.4 MHz -20 dBm BPF BPF 6.4 MHz 70 MHz Synth Level 76.4 MHz PLL Loop Data Clk Filter VCO IF Output PLL Enbl Synth Ref 70 MHz Exciter Level -10 dBm Lock Figure 1-6. IF Upconverter Block Diagram The resultant carrier is translated up to 70 MHz by the IF Upconverter (see Figure 1-6).
1-7 System Description Figure 1-7. RF Upconverter Block Diagram The IF output carrier of the IF Upconverter daughter card is fed to the transmit portion of the RF Module via an external (rear panel) semi-rigid SMA cable. This module performs the necessary upconversion to the RF carrier (see Figure 1-7). There is an on-board CPU for independent control of the critical RF parameters of the system.
System Description 1-8 interfering RF signals resulting from RF bandwidth that is much wider than the IF bandwidth. The linear QAM scheme is fairly intolerant of amplifier overload. 1.5.6 QAM Demodulator/IF Downconverter IF Input 70 MHz BPF BPF 70 MHz 6.4 MHz IF Output Synth Level 6.4 MHz -10dBm 76.4 MHz PLL Loop Data Clk Filter AGC Control VCO PLL Enbl Ref Synth Lock Figure 1-9.
2 Installation 2.1 Unpacking The following is a list of all included items. Description Quantity Digital Radio (3RU chassis) 1 Rack Ears (with hardware) 4 Extender Card (Universal QAM) — optional 1 Power Cord (IEC 3 conductor for AC, 2-wire for DC) 2 Manual ( or Soft copy on a CD) 1 Test Data Sheet (customer documentation) 1 Be sure to retain the original boxes and packing material in case of return shipping. Inspect all items for damage and/or loose parts.
Installation 2-2 HIGH VOLTAGE IS PRESENT INSIDE THE POWER SUPPLY MODULE WHEN THE UNIT IS PLUGGED IN. REMOVAL OF THE POWER SUPPLY CAGE WILL EXPOSE THIS POTENTIAL TO SERVICE PERSONNEL. TO PREVENT ELECTRICAL SHOCK, UNPLUG THE POWER CABLE BEFORE SERVICING. UNIT SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY. PRE-INSTALLATION NOTES Always pre-test the system on the bench in its intended configuration prior to installation at a remote site.
2-3 Installation 2.5 Rear Panel Connections & Indicators Please refer to the Figure 2-2 for a pictorial of a typical product rear panel (internal duplexer). Following is a descriptive text of the connections and LED indicators. Figure 2-2.
Installation 2-4 QAM Modem I/O Ports: TRUNK: Data I/O 15pin D-sub (female) HD RF Connectors: 70 MHz OUT: SMA (female); Modulator output 70 MHz IN: SMA (female); Demod input MOD: GREEN indicates Modulator Lock DEMOD: GREEN indicates Demod Lock Status LED: Up/Down Converter Module RF Connectors: Status LED: TO PA: SMA (female), Upconverter output to be applied to linear Power Amplifier module (internal to radio). 70 MHz IN: SMA (female), Modulated IF input from QAM Modulator.
2-5 Installation RF I/O Panel RF Connectors: ANTENNA: Type N (female), RF cabling from internal PA module. PA IN: SMA (female), RF cabling to internal PA module. RX OUT: SMA (female), RF cabling from internal duplexer. SEMI-RIGID CABLE Ensure that the cables are secure and tightly attached. Check for any damage (kinks or breaks in the copper sheath). 2.6 Power Requirements 2.6.
Installation 2-6 2.6.3 DC Input Option An optional DC input power supply is available for the DATA-20; using high reliability, DC-DC converter(s) capable of operation within the following input ranges (dependent upon nominal input rating): Nominal DC Input Operating Input Range 24 Volt: 20 – 28 VDC 48 Volt: 32 – 64 VDC The DC input is isolated from chassis ground and can be operated in a positive or negative ground configuration.
2-7 Installation Data-20 Main Menu Scroll METER QAM RADIO SYSTEM ALARMS/FAULTS Scroll to QAM Radio, press ENTER. Select Launch Screen for CONTROL TX, press ENTER: QAM Radio Launch CONTROL TXA QAM Radio TX Control TX Radiate AUTO Verify the AUTO setting. DataNex AUTO: Transmitter will protect its PA by “folding back” the ALC under bad load VSWR condition (default setting) ON: Transmitter will remain in radiate at full power under all antenna port conditions (not recommended).
Installation 2-8 2.8 Data Interface 2.8.1 4xE1/T1 MUX Channel Configurations Trunk I/O Async Data Channel Channel 1/2 (E1/T1) Channel 3/4 (E1/T1) Aux Channel 1 Aux Channel 2 EMS Figure 2-3. 4XE1/T1 MUX Panel The 4xE1/T1 MUX is a high speed card (up to 8 MBPS) that has a total of 7 ports. Table 2-1 summarizes the capabilities.
2-9 Installation Table 2-1.DATA-20 4xE1/T1 MUX Data Channel Configurations Chnl Data Rate 4xE1 (BPS) Data Rate 4xT1 (BPS) Data Rate 2xE1 (BPS) Data Rate 2xT1 (BPS) Data Rate 1xE1 (BPS) Data Rate 1xT1 (BPS) Interface 1 2.048 K 1.544 K 2.048 K 1.544 K 2.048 K 1.544 K G.703, DSX-1 2 2.048 K 1.544 K 2.048 K 1.544 K --- --- G.703, DSX-1 3 2.048 K 1.544 K --- --- --- --- G.703, DSX-1 4 2.048 K 1.544 K --- --- --- --- G.
Installation 2-10 ANTENNA DATA-20 Radio A DATA TP64 Top View RJ45 DATA TP64 Rear Panel RJ45 Data-20 Radio B DATA Figure 2-4.DATA-20 Hot Standby – with Transfer Panel 2.9.1 Hot/Cold Standby Modes Hot Standby ( *preferred) Hot standby leaves both transmitters in the RADIATE ON condition, and the transfer logic controls the RF relay to select the active transmitter, thereby decreasing switchover time. This is the preferred operating mode.
2-11 Installation output ON (in tandem with the RF relay) as required for switching. This will increase switching time and a corresponding increase in data loss during the switchover. 2.9.2 Hot Standby Control using the TP64 2.9.2.1 TP64 Front Panel Controls and Indicators Note: See the following section for a detailed description of the Master/Slave logic implemented in the TP64. DataNex Figure 2-5.
Installation 2-12 Table 2-3. TP64 Transmitter Master/Slave Logic B-Master Logic A-Master Logic Selected Master A A A A B B B B TXA Status OK OK FAIL FAIL OK OK FAIL FAIL TXB Status OK FAIL OK FAIL OK FAIL OK FAIL TXA LED GRN GRN RED RED YEL GRN RED RED TXB LED YEL RED GRN RED GRN RED GRN RED Active TX A A B N/A B A B N/A TX Relay Position A A B A B A B B Table 2-4.
2-13 Installation Note: Manual switching of the Master is often used to force the system over to the standby unit. The user may want to put more “time” on the standby unit after an extended period of service. In Hot Standby configurations, this will not buy the user anything in terms of reliability. In Cold Standby, the “burn time“ is more significant, since the RF power amplifier device operating life becomes a factor. 2.9.2.
Installation 2-14 Tx Transfer: OFF: Turns Transmitter Transfer Mode OFF. Rx Transfer: OFF: Indicates the receivers are not switched. In the QAM Radio TX Control menu: QAM Radio Tx Control TX Radiate ______ Tx Radiate: ON: 2.9.2.4 Configures the Transmitter to always RADIATE. TP64 Settings The TP64 software settings are contained in the internal firmware. Aside from the front panel RADIO A/B Master Select (as described above), there are no user-configurable settings in the TP64 unit. 2.9.
2-15 Installation It is important that each DATA-20 radio in the redundant pair is configured identically for proper operation. In the SYSTEM TRANSFER menu: Transfer Tx Transfer ______ Rx Transfer ______ Tx Transfer: HOT: Configures the Transmitter for HOT STANDBY operation.*(preferred) COLD: Configures the Transmitter for COLD STANDBY operation. Rx Transfer: ON: Places the receivers in both active and transfer mode.
Installation 2-16 2.11 Antenna/Feed System 2.11.1 Antenna Installation For compliance with FCC RF Exposure requirements the following has to be adhered to:- 1. All antenna installation and servicing is to be performed by qualified technical personnel only. When servicing the antenna, or working at distances closer than those noted below, ensure the transmitter has be disabled. 2.
3 Front Panel Operation 3.1 Introduction This section describes the front panel operation of the DATA-20 digital radio/modem. This includes: • LCD display (including all screen menus) • Cursor and screen control buttons • LED status indicators 3.2 Front Panel Operation A picture of the DATA-20 front panel is depicted in Figure 3-1 below.
Front Panel Operation 3-2 Figure 3-1.DATA-20 Front Panel 3.2.1 LCD Display The Liquid Crystal Display (LCD) on the DATA-20 front panel is the primary user interface and provides status, control, configuration, and calibration functionality. The menu navigation and various screens are explained in detail later in this section. Backlight: An automatic backlight is built-in to the LCD for better clarity under low-light conditions.
3-3 Front Panel Operation 3.2.3 LED Status Indicators Table 3-1. LED Status Indicator Functions LED Name Function Receiver Green indicates that the receiver is enabled, the synthesizer is phase-locked, and a signal is being received. RXD Receive Data Green indicates that valid data is being received. BER Bit Error Rate Flashes red for each data error detected. FLT Fault General fault light (red). Consult the STATUS menus for out of tolerance conditions.
Front Panel Operation 3-4 3.3 Main Menu MAIN MENU METER QAM RADIO SYSTEM ALARMS/FAULTS Scroll Data-20 The main menu appears on system boot-up, and is the starting point for all screen navigation. Unlike most other screens in the software, the main menu scrolls up or down, one line item at a time.
3-5 Front Panel Operation 3.3.1 Launch Screens The LAUNCH screen allows the user to quickly get to a particular screen within a functional grouping in the unit. The logic is slightly different than other screens. Figure 3-2 below contains a “Launch Screen Navigation Guide” to assist the user in locating the desired Radio screen.
Front Panel Operation 3-6 This page is intentionally blank.
3-7 Front Panel Operation Data-20 MAIN MENU METER Sc roll QAM RADIO SYSTEM ALARMS/FAULT ALARMS FAULTS ALARMS FAULTS ALARMS/FAULTS SYSTEM System CARD VIEW Scr POWER SUPPLY oll INFO BASIC CARD SETUP FACTORY CAL UNIT-WIDE PARAMS DATE/TIME TRANSFER EXTERNAL I/O METER Meter Bargraph DECDR 1 Backlight AUTO Led DSP A Cards QAMOD RF TX RF RX Active B.Addr A 1 A 1 A 1 Basic Card Setup CARD ID QAM Modem QMA RF Tx TXA Cards Active B.
3-8 Front Panel Operation Data-20 MAIN MENU Scr oll METER QAM RADIO SYSTEM CAL 15V-RFA +5VD BATT +15VA Factory Calibration SYSTEM System ALARMS/FAULTS CARD VIEW POWER SUPPLY INFO BASIC CARD SETUP FACTORY CAL DATE/TIME TRANSFER EXTERNAL I/O Scr oll Factory Calibrate RADIO TX SYSTEM RADIO RX QAM MODEM System Cal EXTERNAL ANALOG #1 #2 #3 #4 15V-RFA-Prim. Calib Extern A/D 1 Calib Reading Calibr Val Reading Calibr Val 15.00 14.50 Battery-Prim.
3-9 Front Panel Operation 3.4 Screen Menu Summaries The following tables and text provide a screen view for that topic as well as the functions and settings of that screen. The order follows the Screen Menu Tree (Figures 3-2a and 4-2d) with the exception of the QAM Radio screens, which are grouped in the STATUS, CONTROL and CONFIGURE categories. 3.4.1 Meter Meter Bargraph Led Dsp Function Bargraph Led Dsp 3.4.
Front Panel Operation Function Cards Active 3-10 Settings RF RX A Summary QAM Receiver RF Module installed in QAM Radio “A” slots (base address 0) Audio Decoder #1 installed (base address 1) Audio Encoder #1 installed (base address 2) QAM Modem Module installed in QAM Radio “A” slots (base address 3) QAM Transmitter RF Module installed in QAM “A” slots (base address 4) Intelligent Multiplexer #0 installed (base address 5) DECDR 1 ENCDR 1 QAMOD A RF TX A MUX 0 CH CD 1 Note: The card view screen gives t
3-11 3.4.
Front Panel Operation 3-12 QAM Modem A In system? YES Radio TX A In system? YES Radio RX A In system? YES Encoder 1 In system? Base addr Decoder In system? Base addr 3.4.
3-13 3.4.7 System: Front Panel Operation Unit-Wide Parameters Parameter Unit No. Main Title Redundant Value 1 NXE1 ON IP MSB IP IP IP LSB 207 71 237 115 SNM MSB SNM SNM SNM LSB 255 255 255 0 GW MSB GW GW GW LSB 207 71 237 254 Calc BER always RMT/LOC Function Unit No.
Front Panel Operation 3.4.8 System: Function Day Month Year Hour Minute Second 3.4.
3-15 Front Panel Operation 3.4.10 External I/O Ext A/D Readings #1- 0.56 #3- 0.00 #2- 0.00 #4- 0.
Front Panel Operation 3-16 3.4.11 Alarms Alarm(s) Total Alarms Since Reset-1 Alarm(s) Rev Pwr > 0.25 W 15:20:24 6/29/98 Module QAM RF TX QAM RF RX QAM MODEM Modulator only Parameter Reverse Power PA Current LO Level Exciter Level RSL LO Level BER Synth Level Modem Level Nominal 0.05 Watt 2.5 Amp 100% 100% -30 to –90 dBm 100% 100% 100% Trip Value > 0.25 Watt > 3.0 Amp < 50% < 50% < 50% >1.
3-17 Front Panel Operation 3.4.12 Faults Fault(s) Total Faults Since Reset-1 Fault(s) Fwd Pwr < 0.5 W 15:18:43 6/29/98 Module QAM RF TX Parameter Nominal Trip Value Forward Power 1.0 Watt < 0.5 Watt AFC Lock Lock Unlock PA Temp 40 deg C >80 deg C AFC Lock Lock Unlock QAM RF RX AFC Lock Lock Unlock QAM MODEM Mbaud Lock Unlock Dbaud Lock Unlock Dfec Lock Unlock Fault definition: A specific parameter is out of tolerance and is crucial for proper system operation.
Front Panel Operation 3-18 3.4.14 QAM Modem Status -80 dBm QAM QAM Modem Modem BER Post 0.00E+00 #Bits 0.0000E+00 #Errors 0.0000E+00 -80 dBm QAM Modem BER Pre 0.00E+00 #Bits 0.0000E+00 #Errors 0.0000E+00 Function BER Post Settings 0.00E-00 BER Pre 0.00E-00 # Bits # Errors 0.0000E+00 0.
3-19 Front Panel Operation QAM Modem Status (continued) Qmdm MOD Baud IFMOD Qmdm LOCK 4 % IFOUT Mode 95 64Q LOCK LOCK Qmdm MOD Baud DRT Enc 280.5 k 1535 k DVB LOCK 3.7 Qmdm MOD Spctr Fltr Intrl NRML 18 3 Qmdm DEMOD Baud Fec Qmdm Synth AFC Function BAUD IFMOD BAUD FEC SYNTH AFC IFOUT Mode BAUD DRT ENC SPCTR FLTR INTRL V Settings LOCK (default) UNLOCK 0 – 100% 100% NOM LOCK (default) UNLOCK LOCK (default) UNLOCK LOCK (default) UNLOCK 0 – 9.9 VDC 3.
Front Panel Operation 3-20 QAM Modem Status (continued) Qmdm DEMOD 280.5 k Baud DRT 1535 k DVB Enc Qmdm DEMOD Spctr NRML Fltr 18 Intrl 3 % TX CLOCK Clk Src Recov Clk Ph Norm TX CLK OUT Clk Ph Norm NORMAL RX OUT Data Src Norm Clk Src Recov Clk Ph Norm TRNK FVers XVers Qmdm Test Qmdm Intfc Intfc Function BAUD DRT0 ENC SPCTR FLTR INTRL TEST Interface Clk Src (Tx Clock) Clk Ph (Tx Clock) Clk Ph (Tx Clock Out) Data Src (Rx Out) Qmdm Settings 280.
3-21 Front Panel Operation 3.4.15 QAM Radio TX Status DTV Menus QAM Radio TX Status Freq xxxx.xxx TX Xmtr Fwd Rev FORC 1.00 W 0.00 W Tx PA Cur Temp Synth 2.50 A 45 C LOCK Tx AFC LO Xctr Function Freq A XMTR FWD REV PA CUR TEMP SYNTH AFC LO XCTR DataNex MHz 3.8 100 100 Settings 2300.00MHz TRAFFIC FORCED (default) 0 – 9.99 Watt 1.00 Watt (nominal) 0 – 9.99 Watt 0.07 Watt (nominal) 0.00– 9.99 Amp 2.40 Amp (nominal) 0– 99.9 deg C 45.0 deg C (nominal) LOCK (default) UNLOCK 0 – 9.9 VDC 3.
Front Panel Operation 3-22 3.4.16 QAM Radio RX Status QAM Radio RX Status Freq Function Freq A XMTR FORC -80 dBm AUTO RX SYNTH AFC LO LOCK V 4.4 100.0 % Settings 2300.00 MHz Summary Displays the receiver operating frequency Transfer status of receiver: Is operating, ready for transfer FORCED (default) -30.0 to -90.0 dBm ATTEN SYNTH AFC LO MHz RX Rcvr RSL Atten TRAFFIC RSL xxxx.xx AUTO (default) ON OFF LOCK (default) UNLOCK 0 – 9.9 VDC 3.5 VDC (nominal) 0 – 99.
3-23 Front Panel Operation 3.4.
Front Panel Operation 3-24 3.4.
3-25 Front Panel Operation QAM Modem Configure (continued) QAM Interface DTE Trnk Intfc TX CLOCK Clk Src Recov Clk Ph Norm TX Clk Out Clk Ph Norm RX Out Data Src Norm Clk Src Norm Clk Ph Norm Qmdm FVERS XVER Function Interface Settings Trunk Radio (bkpln) Clk Src (Tx Clock) Internal, EXT TXC, EXT RXC, Recovered Inverted, Normal Clk Ph (Tx Clock) Clk Ph (Tx Clock Out) Data Src (Rx Out) 1.5 2.1 Summarys Uses Trunk for I/O. Uses Backplane for I/O. Clock source of the Transmitter.
Front Panel Operation 3.4.19.1 3-26 Typical Configuration A typical installation of DATA-20 Digital Radios involves configuring each DATA-20 as either Data Communications Equipment (DCE) or as Data Terminal Equipment (DCE), as illustrated below: Tx Clock Rx Clock Telecom Equipm ent Configured as DCE Configured as DTE Configured as DTE Repeater (DCE coupled with a DTE) Configured as DCE A DCE coupled together with a DTE enables the signal to be relayed to another DCE.
3-27 Front Panel Operation Configured as DCE To configure the DATA-20 as a DCE, select the following clock settings in the System menu: QAM Inerface Intfc DCE Trunk TX CLOCK Clk Src Recov Clk Ph Norm TX CLK OUT Clk Ph Norm RX CLOCK Clk Src Recov Clk Ph Norm 3.4.19.3 DATA-20 as Data Terminal Equipment (DTE) When configured as Data Terminal Equipment (DTE), the DATA-20 gets its clock from an external source, such as a telecommunications device.
Front Panel Operation 3-28 To configure the DATA-20 as a DTE, make the following clock selections in the System menu: QAM Interface Intfc DTE Trunk TX CLOCK Clk Src EXT TXC Clk Ph Norm TX CLK OUT Clk Ph Norm RX CLOCK Clk Src EXT TXC Clk Ph Norm DataNex EMS Wireless, DATA-20 Digital Radio
3-29 3.4.19.4 Front Panel Operation User Clock Options Conceptual Diagram Figure 3-4.
Front Panel Operation 3-30 3.4.20 QAM Radio TX Configure QAM Radio TX Config Freq xxxx.xx MHz QAM Radio TX Config LO Side LOW LO Freq 1020.0000 MHz LO Step 25.0 KHz press 'ENTER' press 'ESC' Save Setting ? No press "Left arrow" to say YES press 'ENTER' Function FREQ Settings 2300.00 MHz LO Side LOW HIGH 2370 MHz 25.0 KHz LO Freq LO Step DataNex Summary Displays the frequency of the transmitter and allows the user to make frequency changes. LOW: LO freq is less than carrier freq.
3-31 Front Panel Operation 3.4.21 QAM Radio RX Configure QAM Radio RX Config Freq xxxx.xx MHz QAM Radio RX Config LO Side LOW LO Freq 1020.0000 MHz LO Step 25.0 KHz press 'ENTER' press 'ESC' Save Setting ? No press "Left arrow" to say YES press 'ENTER' Function FREQ Settings 2300.00MHz LO Side LOW HIGH 2370.00 MHz 25.0 KHz LO Freq LO Step Summary Displays the frequency of the receiver and allows the user to make frequency changes. LOW: LO freq is less than carrier freq.
Front Panel Operation 3-32 1. Power-up the unit and navigate the LCD screens as follows: QAM Radio Launch CONFIGURE TXA QAM Radio TX Config Freq xxxx.xx MHz 1. Using the cursors, change to the desired frequency. Press ENTER and the TX will most likely lose AFC LOCK. 2. Navigate the LCD screens to monitor the AFC voltage as follows QAM Radio Launch STATUS TXA TX AFC LO Xctr 4.5 50 50 VDC % % 1. Ensure that the voltage reads 0.5 to 9.5 +/- .25 VDC. 2.
3-33 Front Panel Operation 1. Using the cursors, change to the desired frequency. Press ENTER and the RX will most likely lose AFC LOCK. 2. Navigate the LCD screens to monitor the AFC voltage as follows QAM Radio Launch STATUS RXA RX SYNTH AFC LO LOCK 4.5 VDC 100 % 3. Ensure that the voltage reads 0.5 to 9.5 +/- .25 VDC. 4. The RX should achieve AFC LOCK and the operation is successful.
4 Data Interface Cables MUX CHANNEL HD15M TXD_I_A TXD_I_B RXD_O_A RXD_O_B TXC_I_A TXC_I_B TXC_O_A TXC_O_B RXC_O_A RXC_O_B SIG_GND INDICATES TWISTED PAIR V.
Appendix 4-2 Figure 4-2.
5 Appendix 5.
Appendix 5-2 FSK Frequency Shift Keying FT1 Fractional T1 IC Integrated circuit IEC International Electrotechnical Commission IF Intermediate frequency IMD Intermodulation Distortion ISDN Integrated-Services Digital Network Kbps Kilobits per second KHz Kilohertz LED Light-emitting diode LO, LO1 Local oscillator, first local oscillator LSB Least significant bit Mbps Megabits per second Modem Modulator-demodulator Ms Millisecond MSB Most significant bit MUX Multiplex, Multip
5-3 Appendix SRD Step Recovery Diode STL Studio-Transmitter Link TDM Time Division Multiplexing THD Total harmonic distortion TP Test Point TTL Transistor-transistor logic TX Transmitter Vrms Volts root-mean-square Vp Volts peak Vp-p Volts peak-to-peak VRMS Volts, root-mean-square VSWR Voltage standing-wave ratio ZIN Input Impedance ZOUT Output Impedance 5.2 Conversion Chart microvolts to dBm (impedance = 50 ohms) microvolts dBm microvolts dBm 0.10 -127.0 180 -61.9 0.
Appendix 5-4 microvolts dBm microvolts dBm 9.0 -87.9 1,800 -41.9 10 -87.0 2,000 -41.0 11 -86.2 2,500 -39.0 12 -85.4 3,000 -37.4 14 -84.1 3,500 -36.1 16 -82.9 4,000 -34.9 18 -81.9 4,500 -33.9 20 -81.0 5,000 -33.0 25 -79.0 6,000 -31.4 30 -77.4 7,000 -30.1 35 -76.1 8,000 -28.9 40 -74.9 9,000 -27.9 45 -73.9 10,000 -27.0 50 -73.0 22.36 mV -20 (10 mW) 60 -71.4 70.7 mV -10(100 mW) 70 -70.1 223.6 mV 80 -68.9 707.1 mV +10 (10mW) 90 -67.9 2.
5-5 DataNex Appendix EMS Wireless, DATA-20 Digital Radio
Appendix DataNex 5-6 EMS Wireless, DATA-20 Digital Radio
