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7.3 TEST AND ALIGNMENT INSTRUCTIONS
1
Operating voltage
|-
Power
consumption
(+ 11 VDC)
"4:8: VDC)
Measurement,
Signal input
adjustment
{Operating voltage
Operating voltage
Voi 12 VDC,
S2"ON';
Ammeter
approx. 350. mA
+10mA
DC voltmeter
DC voltmeter
DC voltmeter
TP33
+ 11+ 0.2 VDC
+.8+.0.1 VDC
+5+0.1 VDC
Preparations,
Test point | Required value
| Adjust
settings
with
channel B
necessary.
channel B
at J1:
(A-weighted,
<-71 dBu
receiver frequency, | effective),
at 3 pV
|
RF: 3 uv,
oscilloscope
deviation: off
: 5.4 | Demodulator
RF signal generator.
| AF voltmeter,
J4
max. level
T103
channel A
at J101:
oscilloscope
|
receiver frequency,
'
RF: 1 mV,
|
deviation: 40 kHz,
modulation: 1 kHz
|
a
serena
tt
Ce
ee
5.5 | AF amplifier
as 5.4
AF voltmeter,
J4
2.9 Vin
R302
channel A
oscilloscope
5.6 [Demodulator
| as 5.5
THD meter
J4
THD <0.5%.
T1108
Repeat 5.5 if
1
channel A
necessary.
(fine adjustment)
|
EM 1031-V
02/97-16
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