R.V.R. Elettronica TEX20-NV, Техническое руководство

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TEX20-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 46
5) Take the same reading from the analog meter on the TEX20-N.V.,
selecting PWR FWD. Adjust trimmer R4 on the EURO Audio Input card
for a meter reading of 20W.
6) Rotate the PWR ADJ trimmer anticlockwise to obtain an output power
reading of 5W. Now, disconnect the dummy load from exciter’s R.F.
output.
7) Verify the same reading on TEX20-NV’s meter, selecting a FWD PWR
reading through relative selectors placed on the front panel; if
the reading on the meter is different from 5W reads on wattmeter,
adjust R5 trimmer placed on the EURO Audio Input card.
8) Reconnect the dummy load and turn the PWR ADJ trimmer clockwise until
the output power is once more 20W.
5.3 POWER SUPPLY CALIBRATION
The only calibration procedure required in the event of Power Supply
replacement is that of the RF Power Amplifier from step (1) to step (8).
5.4 EURO AUDIO INPUT CARD CALIBRATION
The only calibration procedure required in the event of EURO Audio Input
card replacement is that of the RF Power Amplifier from step (5) to step (8).
5.5 USA AUDIO INPUT CARD CALIBRATION
No calibration is required after the replacement of this card.
5.6 FREQUENCY SELECTOR CARD (CONTRAVES) CALIBRATION
No calibration is required after the replacement of this card.