
NX-220
78
ADJUSTMENT
Mode
Signaling
Necessary adjustment and order
Wide
Narrow
Very Narrow
NXDN
Audio
-
Step 1. Balance adjust
Step 2. Maximum Deviation (NXDN Narrow)
Step 1. Balance adjust
Step 2. Maximum Deviation (NXDN Very Narrow)
CW ID
-
-
Step 1. Balance adjust
Step 2. Maximun Deviation (Analog Narrow)
Step 3. CW ID Deviation (NXDN Very Narrow)
• 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
Condition
Measurement
Adjustment
Specifi cations /
Remarks
Panel tuning mode
PC test mode
Test-
equipment
Unit
Terminal
Unit
Parts
Method
1. AF level
setting
[Panel test mode]
1) CH-Sig: 1-1
SSG
output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
Wide/Narrow
:
Narrow
Beat Shift: Uncheck
Compander: Uncheck
1) Test Channel
Channel: 1
Test
Signaling
Mode: Analog
Signaling: 1
Wide/Narrow
:
Narrow
Beat Shift: Uncheck
Compander: Uncheck
SSG
output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
SSG
DVM
AF VTVM
Dummy
load
Panel
ANT
SP/MIC
connector
Panel
Volume
knob
Turn the Volume
Knob to obtain
0.63V AF output.
0.63V±0.1V
2. Sensitivity 1 * This adjustment can
be performed only
in PC test mode.
1) Adj item:
[Sensitivity
1]
2) Adj item: [Low],
[Low’], [Center],
[High’], [High]
Press [Apply All]
button to store the
adjustment value.
SSG
AF VTVM
Dummy
load
Oscilloscope
Panel
ANT
SP/MIC
connector
[PC test
mode]
[ ],[ ]
Write the value as
followings.
[Low]: 15 (Fixed)
[Low’]: 35 (Preset)
[Center]: 80 (Preset)
[High’]: 135 (Preset)
[High]: 180 (Preset)
Note:
The Preset value of
Sensitivity 2 must
be written before
adjusting Sensitivity
1.
3) Adj item: [Low’],
[Center], [High’],
[High]
Press [Apply All]
button to store the
adjustment value.
Decrease the ad-
justment value from
the preset value to
get 12dB SINAD.
SSG output:
–119dBm (0.25µV)
(MOD: 1kHz/±1.5kHz)
3. Sensitivity 2 * This adjustment can
be performed only
in PC test mode.
1) Adj item:
[Sensitivity
2]
2) Adj item: [Low],
[Low’], [Center],
[High’], [High]
Press [Apply All]
button to store the
adjustment value.
Write the value as
followings.
[Low]: 190 (Preset)
[Low’]: 165 (Fixed)
[Center]: 165 (Fixed)
[High’]: 165 (Fixed)
[High]: 165 (Fixed)
3) Adj item: [Low]
Press [Apply All]
button to store the
adjustment value.
Decrease the ad-
justment value from
the preset value to
get 12dB SINAD.
SSG output:
–119dBm (0.25µV)
(MOD: 1kHz/±1.5kHz)