NX-320
71
ADJUSTMENT (E TYPE)
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 5k/Wide 4k/
Narrow: Narrow
Beat Shift: Uncheck
Compander: Uncheck
1) Test Channel
Channel: 1
Test
Signaling
Mode: Analog
Signaling: 1
Wide 5k/Wide 4k/
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]: 22 (Fixed)
[Low’]: 70 (Fixed)
[Center]: 113 (Fixed)
[High’]: 149 (Fixed)
[High]: 189 (Fixed)
Note:
The Preset value of
Sensitivity 2 must
be written before
adjusting Sensitivity
1.
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]: 256 (Preset)
[Low’]: 256 (Preset)
[Center]: 256 (Preset)
[High’]: 256 (Preset)
[High]: 256 (Preset)
3) Adj item: [Low],
[Low’], [Center],
[High’], [High]
Press [Apply All]
button to store the
adjustment value.
Start by pressing the “Auto Tuning” [Start]
button, or decrease the adjustment value
from the preset value to get the maxi-
mum RSSI level.
SSG output: –90dBm (7.08µV)
(MOD: 1kHz/±1.5kHz)
Press [Apply All] button to store the ad-
justment value after all adjustment points
have been adjusted.
Next, increase the adjustment value to
get 12dB SINAD.
SSG output: –118dBm (0.28µV)
(MOD: 1kHz/±1.5kHz)
4. RSSI
reference
*5
[Analog
Narrow]
1) Adj item: [RRSS]
Adjust:
[
✳✳✳
.]
2) Adj item: [R.RSS_]
→
[R.R.SS_]
→
[R.R.S.S_]
→
[R.R.S.S._]
→
[R.R.S.S._.]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±1.5kHz)
1) Adj item: [RSSI
Reference (Analog
Narrow)]
2) Adj item: [Low],
[Low’], [Center],
[High’], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±1.5kHz)
SSG
Panel
ANT
SP/MIC
connector
[Panel tuning mode]
After input signal
from SSG, press
[B] key to store the
adjustment value.
[PC test mode]
After input signal
from SSG, press
[Apply] button to
store the adjust-
ment value.
