Necessary Deviation Adjustment Item For Each Signaling And Mode; Receiver Section - Kenwood NX-320 Series Service Manual

NX-320

■ 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)", this signaling is composed of three elements [Balance, Maximum Deviation (Analog Wide) and QT Deviation (Wide)].
Please adjust Balance and Maximum Deviation (Analog Wide) before adjusting QT Deviation (Wide).
Mode Signaling
Step 1. Balance adjust
Audio
Step 2. Maximum Deviation (Analog Wide)
Step 1. Balance adjust
QT Step 2. Maximum Deviation (Analog Wide)
Step 3. QT Deviation (Wide)
Step 1. Balance adjust
DQT Step 2. Maximum Deviation (Analog Wide)
Step 3. DQT Deviation (Wide)
Step 1. Balance adjust
LTR Step 2. Maximum Deviation (Analog Wide)
Analog
Step 3. LTR Deviation (Wide)
Step 1. Balance adjust
DTMF Step 2. Maximum Deviation (Analog Wide)
Step 3. DTMF Deviation (Wide)
Step 1. Balance adjust
2TONE Step 2. Maximum Deviation (Analog Wide)
Step 3. Single Tone Deviation (Analog Wide)
Step 1. Balance adjust
MSK
Step 2. Maximum Deviation (Analog Wide)
(FleetSync)
Step 3. MSK Deviation (Analog Wide)
Audio
NXDN
CW ID
• Balance is common with all the above deviation adjustments. If Balance (Transmitter Section 3) has already adjusted, please skip Step 1 and adjust
from Step 2.
• Maximum Deviation (Analog Wide/Narrow) is common with all the analog signaling deviations and CW ID Deviation (NXDN Very Narrow).
If Balance and Maximum Deviation (Analog Wide/Narrow) (Transmitter Section 5) have already adjusted, please skip Step 2 and adjust from Step 3.

Receiver Section

Item
Panel tuning mode
1. AF level [Panel test mode]
setting 1) CH-Sig: 1-1
SSG output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
Wide/Narrow: Narrow
Beat Shift: Uncheck
Compander: Uncheck
50
ADJUSTMENT (K TYPE)
Wide
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 3. QT Deviation (Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 3. DQT Deviation (Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 3. LTR Deviation (Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 3. DTMF Deviation (Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 3. Single Tone Deviation (Analog Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (Analog Narrow)
Step 3. MSK Deviation (Analog Narrow)
Step 1. Balance adjust
-
Step 2. Maximum Deviation (NXDN Narrow)
-
Condition
PC test mode
equipment
1) Test Channel SSG
Channel: 1 DVM
Test Signaling AF VTVM
Mode: Analog Dummy
Signaling: 1 load
Wide/Narrow: Narrow
Beat Shift: Uncheck
Compander: Uncheck
SSG output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
Necessary adjustment and order
Narrow
-
Measurement
Test-
Unit Terminal Unit
Panel ANT Panel
SP/MIC
connector
Very Narrow
-
-
-
-
-
-
-
Step 1. Balance adjust
Step 2. Maximum Deviation (NXDN Very Narrow)
Step 1. Balance adjust
Step 2. Maximun Deviation (Analog Narrow)
Step 3. CW ID Deviation (NXDN Very Narrow)
Adjustment
Specifi cations /
Parts Method
Volume Turn the Volume 0.63V±0.1V
knob Knob to obtain
0.63V AF output.
Remarks