WRT-800A (AU)
3-2-1.
+
3V (VCC) Regulated Voltage Check
Equipment and Tools
DC power supply
DC output voltage:
+
1.5
±
0.1 Vdc
DC current meter
DC voltmeter
Switch and control setting
S301, S302, S303, S304/ RF-87 board (A-side)
WRT-800A
S301
S302
S303
S304
Channel
setting
AU66 model
_
0
1
OFF
67-01
Proceduer
(1) Set the POWER switch (S201/AU-258 board) to ON.
(2) Check that the DC voltage for check land (VCC)/AU-
258 board to the specified voltage as below.
Specification:
DC voltage for check land (VCC)
=
+
3.0
±
0.1 Vdc
3-4
3-2-2. Carrier Frequency Adjustment
Equipment and Tools
DC power supply
DC output voltage:
+
1.5
±
0.1 Vdc
DC current meter
Frequency counter
Adjustor (SONY part No.7-721-052-81)
RF adjusting connector (See page 3-2.)
Switch and control setting
S301, S302, S303, S304/ RF-87 board (A-side)
WRT-800A
S301
S302
S303
S304
Channel
setting
AU66 model
_
0
1
OFF
67-01
Connections
(For connecting the DC power supply, refer to the “Prepa-
rations” on page 3-3.)
Procedure
(1) Connect the frequency counter to the CN401/RF-87
board (RF adjusting connector).
(2) Adjust
1
CT301 so that the frequency counter reading
meets the following specification.
Specification:
Carrier frequency mentioned in the table as below.
WRT-800A
Carrier frequency
AU66 model
799.250 MHz
±
1 kHz (67-01CH)
Adjustment:
1
CT301/RF-87 board (B side)
RF-87 Board
(B side)
AU-258 Board
(A side)
DC voltmeter
VCC
_
+
1
CT301
RF adjusting connector
SMA-BNC
conversion connector
Frequency counter
RF-87 Board
(B side)
AU-258 Board
(A side)
CN401
