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3-3 ACC LEVELS, REGULATOR OUTPUT AND RECEIVER ADJUSTMENTS
ADJUSTMENT
ADJUSTMENT CONDITIONS
ACC OUPUT
1
• [LOCAL INHIBIT] switch : ON
LEVEL (DO)
• Connect an SSG to the [RX ANT]
connector and set as :
Level
Deviation
Modulation
• Receiving
ACC OUPUT
2
LEVEL (LO)
ACC INPUT
1
• [LOCAL INHIBIT] switch : ON
LEVEL (LI)
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Connect an AG to [ACC1] socket (J9
pin 33, 14) and set as
• Transmitting
ACC INPUT
2
• Connect an AG to [ACC1] socket (J9
LEVEL (DI)
pin 6, 14) and set as
Level
• Transmitting
REGULATOR
1
• Connect an RF power meter or a ter-
OUTPUT
minator to the [TX ANT] connector.
VOLTAGE
• R99, R102 (LOGIC unit)
• Apply DC voltage : 11 V
2
• Apply DC voltage : 10 V
3
• Decrease applied DC voltage 13.8 V
to 9 V.
• Transmitting
4
• Increase applied DC voltage 9 V to
13.8 V.
• Transmitting
SENSITIVITY
1
• [LOCAL INHIBIT] switch : ON
• Receiving freq.
• Connect an SSG to the [RX ANT]
connector and set as :
Level
Deviation
Modulation
• Receiving
SQUELCH
1
• [LOCAL INHIBIT] switch : ON
LEVEL
• Receiving freq
• Connect an SSG to the [RX ANT]
connector and set as :
Level
Modulation
• Receiving
2
• [LOCAL INHIBIT] switch : OFF
• R91 (LOGIC unit) : Max. CW
• Set an SSG as:
Level
• Receiving
*This output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
UNIT
Rear
panel
: 1 mV* (–60 dBµ)
: ±3.0 kHz (#03)
±1.5 kHz (#04)
: 1 kHz
Rear
panel
: OFF
: 20 kHz
: (P–P)/2
: 1 kHz/ 100 mV
: 1 kHz/100 mV
LOGIC
: Max. CCW
Rear
RX
: 415.000 MHz
: 3.2 µV* (–97 dBm)
: ±3.0 kHz [#03]
: ±1.5 kHz [#04]
: 1 kHz
FRONT
: 415.000 MHz
: 0.32 µV* (–10 dBµ)
: OFF
: 0.22 µV* (–13 dBµ)
3 - 4
MEASUREMENT
LOCATION
Connect a millivolt-
meter and 600 Ω ter-
minator in parallel to
[ACC1] socket (J9 pin
5, 7).
(J9 pin 13, 7)
Connect an FM devia-
#03: ±3.0 kHz
tion
meter
to
the
#04: ±1.5 kHz
[TX ANT] connector
through an attenuator.
Connect a digital multi-
At
meter to check point
where the volt-
CP1.
age just switches
H (5 V) to L (0 V).
Connect a digital multi-
meter to check point
CP2.
Connect a DC volt-
Turns off [TX]
meter between the +
LED at 10 V.
and Ð terminals at DC
(stop transmit-
power socket.
ting)
Turns on [TX]
LED at 11 V.
(start transmit-
ting)
Connect a digital multi-
Maximum volt-
meter to check point
age
CP.S.
[BUSY] LED
At the point where
the [BUSY] LED just
turns on.
Speaker output
At the point where
the audio signal just
appears.
ADJUSTMENT
VALUE
UNIT ADJUST
0 dBm
LOGIC
R30
(DO)
0 dBm
R35
(LO)
LOGIC
R52
(LI)
±3 kHz
R83
(DI)
the
point
LOGIC
R99
(VD, H)
R102
(VD, L)
Front
Verify
RX
Adjust in
sequence
L1,
L2,
L4,
L6,
L7,
L9
FRONT
[SQUELCH]
control
LOGIC
R91
(SQL)
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