Sony UWP-V1, Руководство по обслуживанию

Страница: 65 / 164

2-45
UWP Series
4. RF Squelch Level/RF Indicator Level
Adjustment
Perform this adjustment when Muting levels deviate from
the specification.
This adjustment is performed automatically by the learning
function of the URX-P2 RSSI learning.
Preparation
1. Remove the six screws securing the rear case lid of the
URX-P2 to be adjusted, and remove the rear case lid.
2. Remove the two antennas of the URX-P2 to be
adjusted.
Equipment and Tools
.
Signal generator
.
MM-SMA conversion connector : (Part No. J-6402-490-A)
. RF adjusting cable : (Part No. J-6402-390-A)
Connection
.
Same as “3. Output Level Adjustment”.
. For connecting the DC power supply, refer to “1.
Current Consumption Check”.
Procedure
Preparation
Set the signal generator as follows :
Signal generator setting
FREQUENCY (carrier frequency) :
U30 model ; 567.000 MHz
U42 model ; 639.000 MHz
CE62 model ; 799.000 MHz
CE67 model ; 839.000 MHz
KR model
; 741.000 MHz
RF OUTPUT (Output level) : 32 d
u
V
EMF
(=
_
81 dBm)
MODULATION (Modulation frequency) :
OFF (No modulation)
5. Adjustment (ANTENNA B side adjustment)
Point : OUTPUT
Specification : Output level (level meter indication
level) =
_
46 dBm
±
0.5 dB (at 600
Z
loaded)
Adjustment : 1 RV181/RF-130 board (A side)
n
The output level difference between the ANTENNA A
IN side and the ANTENNA B IN side should be
within 0.5 dB.