Sony UWP-V1 Service Manual page 26

4. Reference Frequency Deviation
Adjustment
Equipment and Tools
. DC power supply
DC output voltage : +3.0 ± 0.1Vdc
. DC ammeter
. Audio analyzer
. Modulation analyzer
MEASUREMENT
MEASUREMENT RANGE : AUTO or ± 10 kHz
HPF
LPF
DE EMPHASIS
. 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
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)
MIC/LINE change switch
(S401/RF-131 board) :
Attenuation setting :
Accumulated time setting : "00 : 00"
n
Note down the setting position before the adjustment.
After the Adjustment complete, set the original position.
2-6
: FM
: 50 Hz
: 20 kHz or 15 kHz
: 50 usec
MIC
0 dB
Connections
(For connecting the DC power supply, refer to step
"3. Connecting the DC power supply" in Section 2-1-2.)
MM-SMA conversion connector and
SMA-BNC conversion connector
AF input MIC / LINE
connector change switch
(S401 / RF-131 board)
RF-131 board
Procedure
1. Input 1 kHz, _60 dBV (_57.8 dBm) signal to the AF
INPUT connector.
(0 dBV = 1 Vrms)
2. Connect a modulation analyzer to the antenna terminal
(CN301/RF-131 board) via the MM-SMA conversion
connector and the SMA-BNC conversion connector.
3. Adjust 1RV521 so that the frequency deviation for the
modulation analyzer reading meets the following speci-
fication.
Specification : Frequency deviation = ± 7 kHz ± 0.1 kHz
Adjustment : 1RV521/RF-131 board (A side)
(Refer to page 2-3 for the adjustment location.)
Level meter
Audio analyzer
Modulation Oscilloscope
analyzer
CN301
UWP Series