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2. TRANSMITTING
(HANDSET)
Test
Equipment
(1)
(2)
(3)
(4)
(5)
(6)
(7)
\
RF Electronic
Voltmeter
Linear Detector
Frequency
Counter
AF Oscillator
AF VTVM
Dummy Load (50 ohm)
DC Power supply (DC 3.8V)
1. TX POWER
(1)
(2)
(3)
(4)
Connect a RF electronic
voltmeter
with 50 ohm pro-
be, and switch S102 to the ANT test pin (CN151).
Set switch S102 to the CARR position.
Adjust T252 so that the reading of the RF electronic
voltmeter
is maximum
level.
Adjust T251 so that the reading of the RF electronic
voltmeter
is maximum
level.
2.
TX FREQUENCY
(1) Connect a frequency
counter and switch S102 to the
ANT test pin (CN151).
(2) Set switch S102 to the FREQ position.
(3) Adjust
CT451 so that the reading
of the frequency
counter is 49.770 MHz tO.5 kHz.
Unit Condition
(1) Change
to channel
"X"
button
(2) Connect
IC651 pin
tor (1OOflF 16.3V).
3. MIC MODULATION
(1)
(2)
(3)
(4)
(5)
Connect
a Linear
test pin (CN151).
10 by pushing
"O", followed
by
i to ground
by electrical
capaci-
detector
and switch S102 to ANT
Set switch S102 to the MOD position.
Connect an AF oscillator
(Mod.: 1kHz) and AF-VTVM
to microphone
input.
Adjust an AF oscillator
so that the reading of the AF-
VTVM is 10 mV.
Adjust VR651 so that the reading of the linear detec-
tor is 1.5 kHz fO.1 kHz dev.
STEP
CONDITION
ADJUST
ADJUST
VALUE
SPECIFICATION
1.
TX POWER
S102
: CARR
SIDE
T251
" T252
Maximum
Level
I 2.
TX FREQUENCY
I S102
: FREQ SIDE
I
CT451
I
40.000
MHz
I 40.000
MHz
~0.5
kHz
I
3.
MIC MODULATION
S102
: MOD SIDE
VR651
1.5 kHz Dev.
1.5 tO.1
kHz Dev. (1 kHz)
OSC OUT :10
mV
0.9 f 0.3 kHz Dev. (300 Hz)
2.7 t 1.OkHz Dev. (3 kHz)
I
I
I
Frequency
~ FREQ
Counter
Unit
CN151
b
CARR
MIC +
L151
RF
AF
(DPX side)
o
Oscillator
S102
Electronic
– GND
IC651
MOD
Test
Pin 1
GND
Voltmeter
,
Mod :1
kHz
)
+
\\\'
Linear
Detector
AF
VTVM
100,uF I 6.3V
[
–20–
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