1-30 (No.RA077<Rev.001>)
4.1.9 Receiver Section
NX-1200 Series (K) type
Item
Condition
Measurement
Adjustment
Specifications/
Remarks
PC tuning mode
Point
Method
1. AF level
setting
<PC test mode>
1) Test Channel: 1
Test Signaling Mode: Analog Signaling: 1
Wide/Narrow: Narrow
Beat Shift: Uncheck
Compander: Uncheck
2) SSG output: -47dBm (1mV)
MOD:1kHz/±1.5kHz
SSG
-ANT
AF VM
8ohm Dummy
load
-SP output
Volume Turn the Volume knob
to obtain 0.63V AF
output.
0.63V±0.1V
2. Receive
Sensitivity
*4
1) Adj item:
[Receive Sensitivity]
2) Adj point: 5 points
[Low], [Low'], [Center], [High'], [High]
3) SSG output: -118dBm (0.28uV)
MOD:1kHz/±1.5kHz
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
[<],[>]
Increase the adjustment
value to get the highest
SINAD level.
Press [OK] button
to store the
adjustment value.
3. Receive
Sensitivity
(Semiautomatic)
*4
1) Adj item:
[Receive Sensitivity (Semiautomatic)]
2) Adj points: 5 points
[Low], [Low'], [Center], [High'], [High]
3) SSG output: -90dBm (7.08 uV)
MOD:1kHz/±1.5kHz
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
[<],[>]
Input signal from SSG, press [Start] button,
and after that press [OK] button to store the
adjustment value.
*4
: Only one Receive Sensitivity needs to be adjusted (either Receive Sensitivity or Receive Sensitivity (Semiautomatic)).
4. LNA Off AGC
Calibration
1) Adj item:
[LNA Off AGC Calibration]
2) Adj point: 1 point
[Center]
3) SSG output: -26dBm (11mV)
MOD:1kHz/±1.5kHz
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
Input signal from SSG, press [Start] button
to adjust, and after that press [OK] button to
store the adjustment value.
5. Open
Squelch (5)
(Analog)
1) Adj item:
[Open Squelch (5) (Analog Wide)]
2) Adj points: 5 points
[Low], [Low'], [Center], [High'], [High]
3) SG output: -120dBm (0.22uV)
MOD:1kHz/±3kHz
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
Input signal from SSG, press [Start] button
to adjust, and after that press [OK] button to
store the adjustment value.
1) Adj item:
[Open Squelch (5) (Analog Narrow)]
2) Adj item: 5 points
[Low], [Low'], [Center], [High'], [High]
3) SG output: -120dBm (0.22uV)
MOD:1kHz/±1.5kHz
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
Input signal from SSG, press [Start] button
to adjust, and after that press [OK] button to
store the adjustment value.
6. Open
Squelch (5)
(NXDN)
1) Adj item:
[Open Squelch (5) (NXDN Narrow)]
2) Adj point: 5 points
[Low], [Low'], [Center], [High'], [High]
3) SSG output: -123.5dBm (0.15uV) / No
modulation
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
Input signal from SSG, press [Start] button
to adjust, and after that press [OK] button to
store the adjustment value.
1) Adj item:
[Open Squelch (5) (NXDN Very Narrow)]
2) Adj point: 5 points
[Low], [Low'], [Center], [High'], [High]
3) SSG output: -125dBm (0.126uV) / No
modulation
SSG
-ANT
Distortion meter
Oscilloscope
-SP output
FPU
Input signal from SSG, press [Start] button
to adjust, and after that press [OK] button to
store the adjustment value.
