Alinco DJ-V57, Service Manual

Page: 27 / 32

PAGE
ADJUSTMENT DJ-V57
6
·
13.8V DC shall be supplied to the DC Jack of the unit.
·
Antenna connector shall be connected to a measurement equipment with a 50 ohms shield cable.
·
The test frequency can be varied /- 0.2MHz when receiving interference or interfering with other productions.
Condition of Squelch, S-meter and Attenuator adjusting.
·
modulation frequency with RF signal: 1KHz
·
modulation level (deviation) with RF signal: 3.5KHz
·
SQL setting: 0
Operation of Squelch and S-meter adjusting.
Receive a RF signal with the unit and press “FUNC” key.
26. UHF Squelch [Min.] adjusting
Set the memory channel number to [33].
Condition;
·
frequency: 435.000 +/- 0.2MHz
·
RF signal level:
-11dBµ
27. UHF Squelch [Max.] adjusting
Set the memory channel number to [34].
Condition;
·
frequency: 435.000 +/- 0.2MHz
·
RF signal level: 0dBµ
28. UHF S-meter [1] level adjusting
Set the memory channel number to [35].
Condition;
·
frequency: 435.000 +/- 0.2MHz
·
RF signal level: 0dBµ
29. UHF S-meter [Full] level adjusting
Set the memory channel number to [36].
Condition;
·
frequency: 435.000 +/- 0.2MHz
·
RF signal level:
20dBµ
30. UHF Attenuator-1 adjusting
Set the memory channel number to [37].
Receive a RF signal with the unit.
Press “FUNC” key and then reduce the number of the S-meter between “4” and “5” by rotating
the rotary encoder.
Condition;
·
frequency: 435.000 +/- 0.2MHz
·
RF signal level:
24dBµ
Note: In order to finish this adjustment and proceed to next step, press “FUNC” key.
This must be performed after S-meter adjustments.
OK
OK
NG
31. UHF Attenuator-2 adjusting
Set the memory channel number to [38].
Receive a RF signal with the unit.
Press “FUNC” key and then reduce the number of the S-meter between “1” and “2” by rotating
the rotary encoder.
Condition;
·
frequency: 435.000 +/- 0.2MHz
·
RF signal level: 24dBµ
Note: In order to finish this adjustment and proceed to next step, press “FUNC” key.
This must be performed after S-meter adjustments.
OK
OK
NG
ALINCO, INC.
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