23
ADJUSTMENT
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
TK-760HG/762HG
Receiver Section
1. Discriminator 1) Set test mode
SSG
Rear
ANT
TX-RX
L5
AF output maximum.
• Wide
CH : CH1 - Sig1
panel
(A/2)
SSG freq’
AF VTVM
ACC
: 161.050MHz
K
Oscilloscope
(EXT.SP)
: 149.050MHz
K2
: 160.050MHz
M
SSG output : –53dBm/501
µ
V
SSG MOD : 3kHz
AF : 1.4V/4
Ω
2. Sensitivity
1) Set test mode
SSG
Rear
ANT
TX-RX
L11
RSSI voltage
• Wide
Select “SENS” in tuning mode.
panel
(A/2)
L13
maximum.
“S
.
E
.
N
.
S”
AF VTVM
ACC
L15
Adjust [120]
Distortion
(EXT.SP)
L18
SSG freq’
meter
: 161.050MHz
K
Oscilloscope
: 149.050MHz
K2
AG
: 160.050MHz
M
SSG output : –118dBm/0.28
µ
V
DVM
TX-RX
RSSI
SSG MOD : 3kHz
(A/2)
AF output : 1V/4
Ω
2) “S
.
ENS”
Front
CH
/
Adjust [***]
panel
SSG freq'
.
: 148.050MHz
K
: 136.050MHz
K2
: 146.050MHz
M
3) “S
.
E
.
N
.
S
.
_
.
”
Adjust [***]
SSG freq’
: 173.950MHz
K,M
: 161.950MHz
K2
3. Squelch 3
1) Set test mode
Adjust to the
• Wide
Select “SQL3” in tuning mode.
squelch threshold
“S
.
QL3”
point.
Adjust [***]
SSG freq’
: 148.050MHz
K
: 136.050MHz
K2
: 146.050MHz
M
SSG output : –127dBm/0.1
µ
V
SSG MOD : 3kHz (Wide)
1.5kHz (Narrow)
2) “S
.
Q
.
L
.
3”
Adjust [***]
SSG freq’
: 161.050MHz
K
: 149.050MHz
K2
: 160.050MHz
M
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
1. PLL lock
1) Set test mode
DVM
TX-RX
CV
PLL
TC106 7.5V
±
0.1V
voltage
CH : CH3 - Sig1
Power meter (A/2)
RX
F. conter
TX
2) PTT : ON (Transmit)
TC109 7.5V
RX
3) CH : CH2 - Sig1
Check
1.0V or more
AUX : ON (talk-around mode)
TX
4) PTT : ON (Transmit)
0.5V or more
Common Section
Since the TK-762HG cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment.