Kenwood NX-720 Service Manual page 50

NX-720(G)/720
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Necessary Deviation adjustment item for each signaling and mode
The following shows the necessary adjustment items for each signaling deviation. Please read the following table like the following
example. In the case of the signaling "QT (Wide 5k/Wide 4k)", this signaling is composed of three elements [Balance, Maximum Devia-
tion (Analog Wide 5k/Wide 4k) and QT Deviation (Wide 5k/Wide 4k)]. Please adjust Balance and Maximum Deviation (Analog Wide 5k/
Wide 4k) before adjusting QT Deviation (Wide 5k/Wide 4k).
Mode Signaling
1. Balance adjust
Audio
2. Maximum Deviation (Analog Wide 5k/Wide 4k)
1. Balance adjust
QT 2. Maximum Deviation (Analog Wide 5k/Wide 4k)
3. QT Deviation (Wide 5k/Wide 4k)
1. Balance adjust
DQT 2. Maximum Deviation (Analog Wide 5k/Wide 4k)
3. DQT Deviation (Wide 5k/Wide 4k)
1. Balance adjust
LTR 2. Maximum Deviation (Analog Wide 5k)
Analog 3. LTR Deviation (Wide 5k)
1. Balance adjust
DTMF 2. Maximum Deviation (Analog Wide 5k/Wide 4k)
3. DTMF Deviation (Wide 5k/Wide 4k)
1. Balance adjust
2TONE/ 2. Maximum Deviation (Analog Wide 5k/Wide 4k)
5TONE 3. Single TONE Deviation (Analog Wide 5k/Wide
4k)
1. Balance adjust
MSK
2. Maximum Deviation (Analog Wide 5k/Wide 4k)
(FleetSync)
3. MSK Deviation (Analog Wide 5k/Wide 4k)
Audio -
NXDN
CW ID -
Receiver Section
Item
Panel tuning mode
[Panel test mode]
1. AF level
setting 1) CH-Sig: 1-1
SSG output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
Wide 5k/Narrow:
Narrow
Beat Shift:
Uncheck
Compander:
Uncheck
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ADJUSTMENT
Wide 5k/Wide 4k
Condition
PC test mode
equipment
1) Test Channel SSG
Channel: 1 DVM
Test Signaling AF VM
Mode: Analog 4
Signaling: 1 Dummy
Wide 5k/Narrow: load
Narrow Oscillo-
Beat Shift: Uncheck scope
Compander:
Uncheck
SSG output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
Necessary adjustment and order
Narrow
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. QT Deviation (Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. DQT Deviation (Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. LTR Deviation (Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. DTMF Deviation (Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. Single TONE Deviation (Analog Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. MSK Deviation (Analog Narrow)
1. Balance adjust
2. Maximum Deviation (NXDN Narrow)
-
Measurement
Test-
Unit Terminal Unit
ANT
Ext.SP
con-
nector
Very Narrow
-
-
-
-
-
-
-
1. Balance adjust
2. Maximum Deviation (NXDN Very Narrow)
1. Balance adjust
2. Maximum Deviation (Analog Narrow)
3. CW ID Deviation (NXDN Very Narrow)
Adjustment
Parts Method
[Panel
Volume Up/Down 2.83V±0.3V
tuning Key to obtain (Volume Button in PC
mode] 2.83V AF output. test mode screen)
[ ], (2.0W @ 4 load)
[ ]
[PC test
mode]
[ ],
[ ]
Specifi cations/
Remarks