Turn on the 1024 and 4011.
f. With the 1024 MODE switch in MAN position, press RESET, then press START.
g. If the RF power equipment is functioning properly, the RF wattmeter should
read greater than 50 and less than 150 watts throughout the frequency sweep.
h. Repeat step f with the .1 PWR/FULL PWR switch in the .1 PWR position. The
RF wattmeter (50W scale) should be greater than 5 and less than 15 watts throughout
i. If the RF output measured in steps g and h is only slightly out of specification
(either too high or too low) but otherwise good, adjust the synthesizer output level
as outlined in step k.
j. If there is not output or a very low output at any point during the sweep in the
RF power test steps g and h, refer to the RF power troubleshooting diagram, figure
k. To adjust the transmitter RF power level follow the procedure below in the order
(1) Connect equipment as shown in figure 5-2.
(2) Set the 1024 for DIRECT, 0.1 PWR operation (10 watt output).
(3) With the 1024 MODE switch in MAN position, press RESET. Transmitter out-
put should be approximately 10 watts at 2 MHz (not sweeping).
(4) Remove 1024 top cover and adjust R49 on the synthesizer down converter
card in the 5030-1101 module of the 1024 (1A1A2R49) for an RF output of 12 watts at
401-J7. Note that 1A1A2R49 and R50 are both accessible through a small hole in the
cover of the synthesizer module, (top side of the upper module in the 1024) such that
the synthesizer module does not have to be removed or opened for adjustment. R49
is the potentiometer closest to the center of the synthesizer module and R50 is towards
the edge of the synthesizer module.
(5) Set the 1024 for DIRECT, FULL PWR operation ( 100 watt output).
(6) Adjust R50 on the synthesizer down converter card in the 5030-1101 module
(1A1A2R50) for an RF output of 120 watts at 4011-J7.
(7) If adjustment of R49 and R50 cannot bring the transmitter to the required
level, refer to figure 5-3.
1. Turn off power on 1024 and 4011 and replace cables removed in step a.