Larcan RXI5U Users Manual
REVIVE OPERATIONS AND MAINTENANCE
CONTENTS
1 THE REVIVE TRANSMITTER......................................................................................................................................3
2 MXi AMPLIFIER HEATSINK ASSEMBLY.................................................................................................................4
3 MXi AMPLIFIER CONTROLLER.................................................................................................................................5
4 REVIVE MAIN CONTROL CHASSIS...........................................................................................................................6
5 AMPLIFIER INSTALLATION AND STARTUP..........................................................................................................7
5.1 BEFORE APPLYING AC TO THE UNIT ............................................................................................................................7
5.2 APPLYING AC TO THE UNIT..........................................................................................................................................7
5.3 BEFORE TURNING THE AMPLIFIER ON .........................................................................................................................8
5.4 AMPLIFIER ON SEQUENCE............................................................................................................................................8
5.4.1 Turning ON the Revive Transmitter.....................................................................................................................9
5.4.2 TYPICAL DATA read on the LCD.....................................................................................................................10
6 TEST AND TROUBLESHOOTING .............................................................................................................................11
6.1 BENCH TEST PROCEDURES .........................................................................................................................................11
6.1.1 Front-End Module, 21B1473, Bench Test Procedure........................................................................................11
6.1.2 IPA1, 21B1324, Bench Test Procedure..............................................................................................................11
6.1.3 Driver Pallet, 21B1639, Bench Test Procedure.................................................................................................12
6.1.4 PA Pallet 11A2142G1 Bench Test Procedure....................................................................................................12
6.1.5 Amplifier AGC Setup..........................................................................................................................................12
6.2 BASIC TROUBLESHOOTING TECHNIQUES ....................................................................................................................13
6.2.1 No RF Output.....................................................................................................................................................13
6.2.2 Output Reduced by 35%.....................................................................................................................................13
7 MAINTENANCE.............................................................................................................................................................14
7.1 DAILY.........................................................................................................................................................................14
7.2 MONTHLY...................................................................................................................................................................14
7.3 SEMI-ANNUALLY AND ANNUALLY .............................................................................................................................14
7.4 TRANSMITTER COOLING SYSTEM ...............................................................................................................................14
8 SERVICE..........................................................................................................................................................................15
8.1 REMOVING THE FAN ARRAY.......................................................................................................................................15
8.2 REPLACING THE ENTIRE FAN ARRAY .........................................................................................................................16
8.3 REPLACING A SINGLE FAN..........................................................................................................................................16
9 TEST EQUIPMENT SETUP..........................................................................................................................................17
10 SPECIFICATIONS .....................................................................................................................................................18
10.1 ELECTRICAL ...............................................................................................................................................................18
10.2 OUTPUT ......................................................................................................................................................................18
10.3 ENVIRONMENTAL.......................................................................................................................................................18
10.4 COOLING ....................................................................................................................................................................18
10.5 DIMENSIONS ...............................................................................................................................................................18
10.6 SHIPPING WEIGHT ......................................................................................................................................................18
REVIVE OPERATIONS AND MAINTENANCE
FIGURES
FIGURE 1 REVIVE SERIES RXI5 TRANSMITTER.............................................................................................................................3
FIGURE 2 MXI AMPLIFIER HEATSINK ASSEMBLY ........................................................................................................................4
FIGURE 3 MXI CONTROLLER........................................................................................................................................................5
FIGURE 4 MAIN TRANSMITTER CONTROLLER...............................................................................................................................6
FIGURE 5 REAR PANEL SHOWING INTERLOCK CONNECTOR .........................................................................................................7
FIGURE 6 MAIN MENU..................................................................................................................................................................8
FIGURE 7 INTERLOCKS STATUS ....................................................................................................................................................8
FIGURE 8 TRANSMITTER ON WITH FULL DRIVE ...........................................................................................................................9
FIGURE 9 AGC ADJUSTMENT .......................................................................................................................................................9
FIGURE 10 BOTTOM VIEW OF MXI.............................................................................................................................................15
FIGURE 11 FAN ARRAY ..............................................................................................................................................................16
FIGURE 12 FAN ATTACHMENT TO MOUNTING PLATE.................................................................................................................16
FIGURE 13 TEST EQUIPMENT SETUP ...........................................................................................................................................17
REVIVE OPERATIONS AND MAINTENANCE
1 THE REVIVE TRANSMITTER
The Revive transmitter is comprised of a Power Supply module, a Reject Load Assembly, 4, 5 or 6 MXi Amplifier
Modules, Output Combiner, Main Control Chassis, and Front End (this could be a modulator, exciter or channel
processor depending on the application).
The RF section of the Revive consists of 4, 5, or 6 identical amplifiers configured to operate in quadrature. Each
amplifier is capable of delivering over 200 Watts of digital power. The outputs of these amplifiers are fed into a 4,
5, or 6-way combiner which has built in RF detectors which are used for protection and metering purposes.
The power supply chassis at the bottom of the cabinet contains the two 5,000W plug in switching supply modules
that have their output combined to give the needed 10KW of power at +31VDC which supplies power to the
amplifiers. A +12VDC power supply rated at 300W provides power to the controllers as well as the DC fans inside
the Reject Load and RF Amplifiers.
Figure 1 Revive Series RXi5 Transmitter
REVIVE OPERATIONS AND MAINTENANCE
2 MXi AMPLIFIER HEATSINK ASSEMBLY
Each amplifier assembly consists of a control board, a heatsink assembly that includes four cascaded broadband
amplifier stages, a 4-way splitter, a 4-way combiner, and a fuse block. The final amplifier stage (PA) comprises
four 200Wsp amplifiers configured in parallel. Figure 2 below shows the layout of this assembly.
Figure 2 MXi Amplifier Heatsink Assembly
Also mounted on the heatsink located near the output side of the combiner is a thermal switch that protects the
amplifier from over temperature conditions. Cooling is achieved using multiple muffin fans located under the hood
between the heatsink and the controller. This fan-array assembly is accessible from the bottom of the amplifier
assembly, and can be serviced easily by removing 3 screws.
REVIVE OPERATIONS AND MAINTENANCE
3 MXi AMPLIFIER CONTROLLER
The MXi amplifier control board (Assembly 31C1897) is a single-circuit assembly that provides all of the control
functions required for the MXi series amplifier on a single circuit board. This board can be configured for a number
of different amplifier types, power levels, transmission standards and options.
Figure 3 MXi Controller
The board implements status/telemetry for remote monitoring through a rear panel connector that will interface to
a typical remote control systems (such as Moseley or Gentner). An RS232 serial port is also provided to allow
communication with the main controller located inside the main control chassis. The MXi control board has RF
detectors for forward and reflected power and all the circuitry to support AGC/VSWR/Cutback functions.
For complete documentation regarding the Amplifier Controller, see the publication Amplifier Controller Board.
REVIVE OPERATIONS AND MAINTENANCE
4 REVIVE MAIN CONTROL CHASSIS
The main control chassis located above the RF Amplifiers contains the main control board, LCD touch screen and
RF splitter.
The main control board (Assembly 31C1972) is a single-circuit assembly that provides all of the communications
and controls to the MXi Amplifiers and +31VDC Power Supply on a single circuit board. The controller uses a RS232 connection to communicate with the Amplifiers and a set of status and control lines for communication and
control of the Main Power Supply. The board implements status/telemetry for remote monitoring through a rear
panel connector that will interface to a typical remote control systems (such as Moseley or Gentner). An RS-
232 serial port as well as a RJ45 Ethernet connection is also provided to allow remote monitoring using our InSiNC Remote Monitoring Software. The MXi control board has RF detectors for forward and reflected power and
all the circuitry to support AGC/VSWR/Cutback functions. For complete documentation regarding the Main
Control Board, see the publication Revive Main Transmitter Controller B o ard.
Figure 4 Main Transmitter Controller
Mounted above the main transmitter control board is the RF splitter which takes the input from the front end and
divides it into 4, 5, or 6 paths to supply the input needed for the RF Amplifiers. For complete documentation
regarding the RF Splitter, see the publication Revive RF Splitter.
On the front panel is the LCD touchscreen. This provides status and telemetry readings for the transmitter. From
the LCD you have the ability to raise or lower the power using AGC controls. You can also enable or disable the
remote controls and setup your Ethernet address or serial stream communicatio ns.
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