Sony WRR-801A Service Manual page 27

1. Output level check
Procedure
Step 1: Tuner [1] (Tuner unit 1) checking
(1) Set the WRR-801A as follows;
Front panel (Tuner [1])
Channel setting: Group 00, 6901 channel
(800.125 MHz)
Muting: OFF
Rear panel
ATT (ANTENNA A, B IN) switch: 0 dB
(2) Connect the audio analyzer to the TUNER OUTPUT 1
connector via MIC amp.
(3) Connect the signal generator to the ANTENNA A IN
connector with DC cut fixture.
(4) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency): 800.125 MHz
RF OUTPUT (Output level): 60 dBuV
MODULATION (Modulation frequency): 1 kHz
DEVIATION (Frequency deviation): ± 5 kHz
(5) Check that the TUNER OUTPUT 1 connector output
level is _20 dBm ± 2 dB (at 600 Z loaded).
(6) Connect the audio analyzer to the MIX OUTPUT
connector via MIC amp.
(7) Set the MIX OUTPUT LEVEL switch (rear panel) is 0
dBm (LINE).
(8) Check that the MIX OUTPUT connector output level
is _20 dBm ± 2 dB (at 600 Z loaded).
(9) Set the MIX OUTPUT LEVEL switch is _38 dBm
(MIC).
(10)Check that the MIX OUTPUT connector output level
is _58 dBm ± 2 dB (at 600 Z loaded).
(11)Connect the signal generator to the ANTENNA B IN
connector, and perform the procedures (4) to (10)
above.
WRR-801A
WRU-801A
EMF
(= _53 dBm)
Step 2: Tuner [2] to [6] checking
When the TUNER UNIT WRU-801A is installed in the
Tuner [2] (Tuner unit 2) to Tuner [6] (Tuner unit 6) of the
WRR-801A, perform the adjustments from procedures (1)
to (11) of "Step 1. Tuner [1] (Tuner unit 1) checking" on
the respective tuner units that are installed in the WRR-
801A.
When performing the above described checking change the
following details as shown below, of the "Step 1. Tuner
[1] (Tuner unit 1) checking".
Tuner [1] → Tuner [2], [3], [4], [5], and [6]
TUNER OUTPUT 1 → TUNER OUTPUT 2, 3, 4, 5, and 6
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