OPERATION MANUAL 5543A DIGITAL AGILE TRANSMITTER AXCERA, LLC 103 FREEDOM DRIVE P.O. BOX 525 LAWRENCE, PA 15055-0525 USA (724) 873-8100 • FAX (724) 873-8105 www.axcera.com • info@axcera.
SYSTEM 5543A DIGITAL AGILE PAGE 1 INSTALLATION PROCEDURE UNPACKING Please inspect all material thoroughly upon arrival. Axcera certifies that upon leaving our facility the equipment was undamaged and in proper working order. The shipping container should be inspected for obvious damage indicative of rough handling. Remove the unit(s) from the shipping container and inspect for damage. Check for dents, and scratches, or a broken switch, meter or connector.
SYSTEM 5543A DIGITAL AGILE PAGE 2 CABINET MOUNTING INSTRUCTIONS FOR SLIDES DRAWING CONNECTIONS Once all equipment is in place, making connection to the back of the tray (s) is a relatively simple process. Each wire is clearly marked with a number corresponding to the tray where it connects.
SYSTEM 5543A DIGITAL AGILE PAGE 3 SYSTEM DESCRIPTION FREQUENCY GENERATOR TRAY The Frequency Generator tray is configured to control multiple VCXO’s. within the 4 Channel VCXO assembly. The selected VCXO output is sent to the VHF Buffer/Combiner Board where the RF signal is amplified. The output of the VHF Buffer/Combiner Board is multiplied by four and filtered, then processed by the PLL Board. Once again the signal is multiplied and filtered producing an L.O. output to the agile upconverter.
INITIAL TURN ON 5543A DIGITAL AGILE PAGE 4 INITIAL TURN ON Prior to turning on the system, be sure all connections are in the correct place, and AC power is connected to the back of each tray. Next, follow the steps below: í Turn on each circuit breaker (CB1) located on the back of each unit beginning with the AC Distribution Panel. í Verify that each unit is in standby mode. Upon initial turn on, the following LED indicators should be on.
OPERATION 5543A DIGITAL AGILE PAGE 5 UNIT OPERATION Located on the front of the Frequency Generator Tray are soft-keys and a liquid crystal display. Four menu screens are available: status, mode, fault, and channel setup. Initially when the unit is turned on, a title screen appears which displays the company logo, address, and phone number. Next, the status screen appears as follows: STATUS: STANDBY CHANNEL : A1 MANUAL MODE PRV DWN UP OPR NXT The first line displays the status of the system.
FREQUENCY GENERATOR 5543A DIGITAL AGILE PAGE 6 FRONT PANEL FREQUENCY GENERATOR TRAY SAMPLE CH. OSC Provides a sample from the channel oscillator. CONTROL OPERATE Indicates that the unit is operational FAULT Indicates a fault condition Also included on the front panel is an LCD display with 5 soft-keys below it. The soft-keys allow access to various menus that are explained in the unit operation section of this manual.
FREQUENCY GENERATOR 5543A DIGITAL AGILE PAGE 7 REAR PANEL FREQUENCY GENERATOR TRAY LO OUTPUT (J4) Provides a local oscillator output from the tray EXT 10 MHz REF I/P (J2) 10 MHz reference input ABS COMMUNICATIONS (J3) Accesses Automatic Backup System REMOTE/CONTROL Provides remote/control functions AC (J1) AC input to the tray CB1 Circuit breaker protected ON/OFF switch
FREQUENCY GENERATOR 5543A DIGITAL AGILE PAGE 8 INTERNAL LED INDICATORS FREQUENCY GENERATOR TRAY ASSEMBLY PLL BOARD FREQUENCY GENERATOR CONTROL BOARD FREQUENCY GENERATOR CONTROL BOARD FREQUENCY GENERATOR CONTROL BOARD LED DS1 RED DS3 RED INDICATES PLL Unlocked Fault DS2 GREEN Unit is in operate mode DS1 GREEN Activity status indicator which lights when specific commands are received or implemented by the microprocessor.
UPCONVERTER/AMPLIFIER 5543A DIGITAL AGILE PAGE 9 FRONT PANEL UPCONVERTER/AMPLIFIER SAMPLE 1ST L.O. Provides a sample of the first L.O.
UPCONVERTER/AMPLIFIER 5543A DIGITAL AGILE PAGE 10 REAR PANEL UPCONVERTER/AMPLIFIER LO I/P (J5) Provides an L.O. input into the unit. LO O/P (J6) L.O. output sample RF O/P (J10) RF output from the unit IF I/P (J2) IF input to the unit EXT 10 MHz REF I/P (J3) 10 MHz reference input (source) EXT 10 MHz REF O/P (J4) 10 MHz reference output (to Freq.
UPCONVERTER/AMPLIFIER 5543A DIGITAL AGILE PAGE 11 UPCONVERTER/AMPLIFIER INTERNAL LED INDICATORS ASSEMBLY LED INDICATES ALC/AGC BOARD DS1 RED INPUT FAULT ALC/AGC BOARD DS2 RED ALC FAULT ALC/AGC BOARD DS3 RED MUTE ALC/AGC BOARD DS4 RED AGC FAULT VHF GENERATOR CONTROL BD DS1 RED PLL UNLOCKED BIAS PROTECTION BOARD DS1-DS7 GREEN NORMAL OPERATING AND BIASING VOLTAGES PRESENT DC POWER SUPPLY BOARD DS1-DS7 GREEN CORRECT VOLTAGES PRESENT TRANSMITTER CONTROL BOARD DS1 GREEN ENABLED TRANS
MAINTENANCE 5543A DIGITAL AGILE PAGE 12 MAINTENANCE PROPER CARE OF THE SYSTEM This product is designed with components that require no periodic maintenance except for cleaning and record keeping. The amount of cleaning necessary depends greatly on the conditions in the transmitter room. While the electronics have been designed to function well even if covered with dust, heavy buildups of dirt and insects will impede the effectiveness of the cooling and lead to shutdown or premature failure.
MAINTENANCE 5543A DIGITAL AGILE INSIDE TRAY ALC/AGC Board Red LED(s) on VHF Generator Control Board RED LED on Six Section Bias Protection Board Green LED(s) DS1-DS7 off DC Power Supply Board Green LED(s) DS1-DS7 off Transmitter Control Board DS1 Yellow LED on Transmitter Control Board Green LED(s) DS2-DS8 off Transmitter Control Board Red LED DS7 on PAGE 13 1. Make note of which LED(s) on (DS1-DS4) 1. Call Axcera Customer Service 1. PLL unlocked 1. Adjust UHF Generator 2.
MAINTENANCE 5543A DIGITAL AGILE PAGE 14 ALIGNMENT PROCEDURES GENERAL: Due to the complex and delicate nature of this digital equipment, very few adjustments can be made in the field. Do not attempt to make any adjustments without proper test equipment. REQUIRED TEST EQUIPMENT • • • DVM Frequency Counter Spectrum Analyzer For settings other than those covered in this section, a network analyzer and other equipment is required.
MAINTENANCE 5543A DIGITAL AGILE PAGE 15 UHF GENERATOR BOARD (A15-A1) 1512-1101 ALIGNMENT PROCEDURE 1. Connect the main output from the channel oscillator section of the UHF Generator Board (J1) to a spectrum analyzer, tuned to the crystal frequency and peak the tuning capacitors C6 and C11 for maximum output. Tune L3 and L2 for maximum output. The output level should be +5 dBm ±2 dB.
MAINTENANCE 5543A DIGITAL AGILE PAGE 16 VHF GENERATOR CONTROL BOARD (A14) 1555-1214 ALIGNMENT PROCEDURE 1. Disconnect the PLL reference frequency by removing the plug at J5 and/or J6. 2. Connect a digital volt meter between TP4 (+) and ground (-). Adjust the manual bias potentiometer (R87) for a reading of -3 VDC at TP4. 3. Connect a frequency counter to J11 to measure the VHF frequency (if frequency adjustments are necessary, call Axcera Customer Service.) 4.
MAINTENANCE 5543A DIGITAL AGILE PAGE 17 PROGRAMMING CHART FOR VHF GENERATOR CONTROL BOARD FREQUENCY AGILE APPLICATIONS FORMAT VISUAL IF MHz OSCILLATOR FREQUENCY Fc- L.O. + F IF /8 S1 S2 S3 S4 NTSC PAL 44 36 72.87500 72.
MAINTENANCE 5543A DIGITAL AGILE PAGE 18 ALC/AGC BOARD 1555-1216 PROCEDURE TO DISABLE/ENABLE ALC & AGC: 1. Apply a QAM IF signal to the upconverter tray and place the unit into OPERATE mode. Verify that the output power meter indicates 100%. 2. On the 1555-1216 ALC/AGC board, move jumper on J11 from AGC to MAN and adjust R105 for 100%, if necessary. 3. Move jumper on J4 from ALC to MAN and adjust R25 for 100%, if necessary. 4.
MAINTENANCE 5543A DIGITAL AGILE PAGE 19 PLL BOARD 1527-1402 ALIGNMENT PROCEDURE 1. Disconnect the PLL reference by removing the plug at J1. 2. . 3. Move jumper W1 to setup position 4. Connect a frequency counter to J5 located on the front panel of the frequency generator tray. 5. Measure the VHF frequency. (if frequency adjustments are necessary call Axcera Customer Service. 6. Set PLL programming as per required channel frequency (see programming chart on schematic) 7.
MAINTENANCE 5543A DIGITAL AGILE PAGE 20 FREQUENCY GENERATOR CONTROL BOARD 1527-1401 ALIGNMENT PROCEDURE 1. In the event of a microprocessor failure, and that a manual backup is required, move jumper J13 to the manual position. 2. Set S1-S8 according to the programming chart on the following page. In automatic mode all switches should be set at 1.
MAINTENANCE 5543A DIGITAL AGILE PAGE 21 OSCILLATOR GATING CHART FOR FREQUENCY GENERATOR BOARD CH. A4 B4 C4 D4 G4 F4 E4 S1 0000 0000 0000 0000 0000 0000 0000 S2 0000 0000 0000 0000 0000 0000 0000 S3 0010 0000 0001 0000 0000 0000 0000 S4 0000 0010 0000 0001 0000 0000 0000 S5 0000 0000 0000 0000 1000 0000 0100 S6 0000 0000 0000 0000 0000 1000 0000 S7 0000 0000 0000 0000 0000 0000 0000 S8 0000 0000 0000 0000 0000 0000 0000 NOTE: ON=0 OFF=1.
MAINTENANCE 5543A DIGITAL AGILE PAGE 22 )MATERIAL RETURN PROCEDURE In order to efficiently handle equipment or components returned for repair or sent out on loan, Axcera requests that each returned item be accompanied by a Return Material Authorization Number (RMA#).
MAINTENANCE 5543A DIGITAL AGILE PAGE 23 .PROPER PACKING OF MATERIALS When returning materials to Axcera, it is extremely important to pack them properly. Due to the delicate nature of components contained within the equipment, major damage can occur without proper packing. Please adhere to the following guidelines when returning materials. o Save the boxes in which the transmitter was shipped. Each tray is sent double boxed and enclosed in foam padding.
REFERENCE 5543A DIGITAL AGILE PAGE 24 LIMITED WARRANTY ONE YEAR Seller warrants each new product manufactured and sold by Seller against defects in material and workmanship under normal use and service, for a period of one (1) year from the date of shipment from Seller's plant, when operated in accordance with Seller's operating instructions. This warranty shall not apply to tubes, fuses, batteries, or bulbs.
REFERENCE 5543A DIGITAL AGILE PAGE 25 ABREVIATIONS/ACRONYMS A/D Analog to digital SNR Signal to Noise Ratio AC Alternating Current VCXO Voltage Controlled Crystal Oscillator ALC Automatic Level Control VSB Vestigial Sideband AM Amplitude modulation AGC Automatic Gain Control AWG American wire gauge BER Bit Error Rate DC Direct Current D/A Digital to analog dB Decibel dBm Decibel referenced to 1 milliwatt dBmV Decibel referenced to 1 millivolt dBw Decibel referenced to 1 wat
REFERENCE 5543A DIGITAL AGILE PAGE 26 USEFUL CONVERSION FACTORS TO CONVERT FROM TO MULTIPLY BY mile (US statute) kilometer (km) inch (in) millimeter (mm) inch (in) centimeter (cm) inch (in) meter (m) foot (ft) meter (m) yard (yd) meter (m) mile per hour (mph) kilometer per hour(km/hr) mile per hour (mph) meter per second (m/s) pound (lb) kilogram (kg) gallon (gal) liter U.S. liquid (One U.S. gallon equals 0.
REFERENCE 5543A DIGITAL AGILE PAGE 27 dBm, dBw, dBmV, dBµV, AND VOLTAGE EXPRESSED IN WATTS 50 ohm system WATTS 1,000,000,000,000 100,000,000,000 10,000,000,000 1,000,000,000 100,000,000 10,000,000 1,000,000 100,000 10,000 1,000 100 50 20 10 1 0.1 0.01 0.001 0.0001 0.00001 0.000001 0.0000001 0.00000001 0.000000001 0.0000000001 0.00000000001 0.
REFERENCE 5543A DIGITAL AGILE PAGE 28 RETURN LOSS VS. VSWR 0 -10 -20 R E T U R N L O S S -30 dB -40 -50 -60 -70 1.001 1.01 1.1 VSWR 2.
