3-9
WRR-801A
WRU-801A
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 dB
u
V
EMF
(=
_
53 dBm)
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.
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
