Advertisement
ADJUSTMENT
Tx/Rx VCO (See FIG-1. TABLE-1)
k
1-1.
Test Equipment
AF Oscilattor
.
Linear Detector
DC Power Supply (DC9.OV ...... CENTER MINUS)
Dummy Load
Frequency Counter
RF Electrical Wltmeter
Unit Condition
a)
b)
c)
d)
e)
f)
Set unit to "TEST" mode. (as refer to Table 1) or by shorting "TEST" point (IC401 18 pin) to ground.
Connect the AC Adapter into the DC Jack.
Connect Frequency counter to CNI 01.
Select channel 10 by pushing "PAGE key.
Connect digital voltmeter to TtiRx VCO TEST POINT.
Align T201 (Tx) and TI 02 (Rx) to obtain 2.5V * 0.1 V DC from read of digital voltmeter respectively.
Adjustment
Unit
1
1
Iclol
@pi.
T.
Vco
TX (C215 +SIDE)
Frequency
CN101 (H)
b
3 pin Rx VCO
o
Digital
Counter
Voltmeter
—
CN101 (E)
Rx
GND
(C101 +SIDE)
(FIG-1)
STEP
CONDITION
ADJUST
ADJUSTED VALUE
SPECIFICATION
1. Tx VCO
Tx VCO side
T202
2.5V
2.5V * 0.1 V
2. Rx VCO
Rx VCO side
T102
2.5V
2.5V k O.l V
(TABLE-1)
Remarks: ("TEST" mode)
Connect IC401 18pin and ground.
Connect IC401 23pin and ground. (refer to page 46.)
IL
-13-
Advertisement
