Sony WRR-800A, Service Manual

Page: 26 / 46

3-10 WRR-800A
5. RF level indicator/RF indicator check
Procedure
(1) Set the WRR-800A as follows;
Channel setting: Group 00, 6701 channel
(799.250 MHz)
Muting: OFF
(2) Connect the signal generator to the ANTENNA A IN
connector.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency): 799.250 MHz
RF OUTPUT (Output level): 0 dB
u
V
EMF
(=
_
113 dBm)
MODULATION (Modulation frequency): 1 kHz
DEVIATION (Frequency deviation):
±
5 kHz
(4) Increase gradually the output level from the signal
generator, and check that the output level of the signal
generator is as follows when the RF input level
indicator lights.
RF level indicator (green) Signal generator output level
lights in
25 dB u V
EMF
±
5 dB
35 dB u V
EMF
±
5 dB
45 dB u V
EMF
±
5 dB
55 dB u V
EMF
±
5 dB
(5) Connect the signal generator to the ANTENNA B IN
connector, and perform the procedure (4) above.
Lighting
LCD:
Lighting
LCD:
Lighting
LCD:
Lighting
LCD:
(6) Set the channel setting and FREQUENCY (carrier
frequency) of the signal generator as shown
1
and
2
below.
Perform the procedures (2) through (5) above, for each
channel setting (
1
and
2
).
1
Channel setting: Group 00, 6601 channel
(792.250 MHz)
Signal generator setting:
FREQUENCY (carrier frequency); 792.250 MHz
2
Channel setting: Group 00, 6751 channel
(805.500 MHz)
Signal generator setting:
FREQUENCY (carrier frequency); 805.500 MHz