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3-2-2. Carrier Frequency Adjustment
Equipment and Tools
DC power supply
DC output voltage: +3.0 ± 0.1 V dc
DC ammeter
Frequency counter
RF adjusting cable (Part No. J-6402-390-A)
RF conversion connector (Part No. J-6402-490-A)
Adjustor (Part No. 7-721-052-81)
Connections
(For connecting the DC power supply, refer to the "Prepara-
tion" on page 3-2.)
RF adjusting
Frequency counter
cable
RF-96 board
RF conversion
CN402
connector
Switch and Control Setting
Perform the same setting as described in "4. Switch and Con-
trol Setting during Adjustment and Checking," on page 3-3.
Procedure
(1) Connect the frequency counter to the antenna connector
(CN403) with RF adjusting cable (and RF conversion
connector).
(2) Adjust 1CT201 on the DP-341 board so that the frequency
counter reading meets the following specification.
Specification: Carrier frequency mentioned in the table
below.
WRT-847A/B
U14 model
U30 model
U62 model
U66 model
CE21 model
CE33 model
CE62 model
CE67 model
AU66 model
Adjustment: 1CT201/DP-341 Board (A side)
3-4
DP-341 board
1
CT201
MB-914 board (A side)
Carrier frequency
482.125 MHz ± 1 kHz
578.125 MHz ± 1 kHz
770.125 MHz ± 1 kHz
794.125 MHz ± 1 kHz
482.000 MHz ± 1 kHz
578.000 MHz ± 1 kHz
810.000 MHz ± 1 kHz
850.000 MHz ± 1 kHz
799.250 MHz ± 1 kHz
3-2-3. RF Power Output Adjustment
Equipment and Tools
DC power supply
DC output voltage: +3.0 ± 0.1 V dc
DC ammeter
Power meter (with power sensor)
RF adjusting cable (Part No. J-6402-390-A)
RF conversion connector (Part No. J-6402-490-A)
Adjustor (Part No. 7-721-052-81)
Connections
(For connecting the DC power supply, refer to the "Prepara-
tions" on page 3-2.)
Power meter
Power sensor
RF adjusting cable
RF-96 board
CN402
1 1
CT401
RV401
RF conversion connector
Switch and Control Setting
First, Perform the same setting as described in "4. Switch and
Control Setting during Adjustment and Checking," on page 3-
3, then perform the following setting:
RF power setting:"H" (= 50 mW)
Procedure
(1) Connect the power meter (with power sensor) to the an-
tenna connector (CN402) with RF adjusting cable (and
RF conversion connector).
(2) Adjustment
Specification: Power meter = Maximum
Adjustment: 1CT401/RF-96 Board (A side)
(3) Adjustment
Specification: Power meter = 50
Adjustment: 1RV401/RF-96 Board (A side)
(4) Set the RF power setting to "L" (= 10 mV), and check the
power meter reading meets the following specification.
Specification: Power meter = 11 ± 5 mW
DP-341 board
MB-914 board (A side)
_15
+10
mW
WRT-847A/847B
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