Sony UWP-V1 Service Manual page 37

3. RF Power Output Adjustment
Equipment and Tools
. DC power supply
DC output voltage : +3.0 ± 0.1 Vdc
. DC ammeter
. Power meter (with power sensor)
. Adjustor (SONY Part No. 7-721-052-81)
. MM-SMA conversion connector
(SONY Part No. J-6402-490-A)
. SMA-BNC conversion connector
(SONY Part No. J-6402-480-A)
Switch and Control Setting
MB-1137 board
Transmission channel
U30 model ; 32-01 channel (578.125 MHz)
U42 model ; 42-01 channel (650.125 MHz)
CE62 model ; Group 00, 63-32 channel (810.000 MHz)
CE67 model ; Group 00, 68-32 channel (850.000 MHz)
KR model ; 60-01 channel (746.125 MHz)
Attenuation setting :
Accumulated time setting : "00 : 00"
RF power output : "H"
n
Note down the setting position before the adjustment.
After the Adjustment complete, set the original position.
Connections
(For connecting the DC power supply, refer to step
"3. Connecting the DC power supply" in Section 2-2-2.)
MB-1137 board (B side)
CN101
MM-SMA conversion connector and
SMA-BNC conversion connector
Power sensor
UWP Series
0 dB
Power meter
Procedure
1. Connect the power meter (with power sensor) to the an-
tenna terminal (CN101) via the MM-SMA conversion
connector and the SMA-BNC conversion connector.
2. Adjust 1CT101 so that the power meter reading meets
the following specification.
Specification : power meter = Maximum
Adjustment : 1CT101/MB-1137 board (A side)
(Refer to page 2-16 for the adjustment location.)
3. Adjust 1RV102 so that the power meter reading meets
the following specification.
Specification :
. U30, U42, CE62 and CE67 models :
Power meter = 28 ± 1 mW
. KR model :
+0.5
Power meter = 9.0
_0.1
Adjustment : 1RV102/MB-1137 board (A side)
(Refer to page 2-16 for the adjustment location.)
4. Set the transmission output to "L".
5. Check that the power meter reading meets the follow-
ing.
Specification :
. U30, U42, CE62 and CE67 models :
5 ± 2 mW
. KR model : 1.6 ± 0.6 mW
Adjustment : 1RV104/MB-1137 board (A side)
mW
2-17