Sony WRT-807B, Руководство по обслуживанию

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3-4
WRT-807B (U/CE)
3-2-2. Carrier Frequency Adjustment
Equipment and Tools
DC power supply
DC output voltage : + 1.5
±
0.1 Vdc
DC ammeter
Frequency counter
SMA-BNC (J) connector (Part No. J-6402-490-A)
RF conversion connector (Part No. J-6402-400-A)
Adjustor (Part No. 7-721-052-81)
Connections
(For connecting the DC power supply, refer to the
“Preparation” on page 3-2.)
Switch and Control Setting
Same as “Switch and Control Initial Setting” on page 3-3.
Procedure
(1) Connect the frequency counter to the antenna connector
(CN305) with SMA-BNC (J) connector (and RF con-
version connector).
(2) Adjust
1
CT200 on the DP-306 board so that the frequency
counter reading meets the following specification.
Specification : Carrier frequency mentioned in the table
below.
WRT-807B Carrier frequency
CE57 model 770.000 MHz
±
1 kHz
CE62 model 810.000 MHz
±
1 kHz
CE67 model 850.000 MHz
±
1 kHz
U30 model 578.125 MHz
±
1 kHz
U42 model 650.125 MHz
±
1 kHz
U62 model 770.125 MHz
±
1 kHz
U66 model 794.125 MHz
±
1 kHz
Adjustment : 1 CT200/DP-306 Board (A side)
3-2-3. RF Power Output Adjustment
Equipment and Tools
DC power supply
DC output voltage : + 1.5
±
0.1 Vdc
DC ammeter
Power meter (with power sensor)
SMA-BNC (J) connector (Part No. J-6402-490-A)
RF conversion connector (Part No. J-6402-400-A)
Adjustor (Part No. 7-721-052-81)
Connections
(For connecting the DC power supply, refer to the
“Preparation” on page 3-2.)
Switch and Control Setting
Same as “Switch and Control Initial Setting” on page 3-3.
Procedure
(1) Connect the power meter (with power sensor) to the
antenna connector (CN305) with SMA-BNC (J)
connector (and RF conversion connector).
(2) Adjustment
Specification : Power meter = Maximum
Adjustment : 1 CT301/MB-860 Board (B side)
(3) Adjustment
Specification : Power meter =
+
9.0
±
0.1 mW
Adjustment : 1 RV305/MB-860 Board (B side)
Frequency counter
MB-860 board (B side)
CN305
SMA-BNC (J) connector with
RF conversion connector
Power meter
Power sensor
MB-860 board (B side)
RV305
CT301
SMA-BNC (J) connector with RF conversion connector