NXR-810
82
ADJUSTMENT
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
9. Balance
Adjust
[20Hz
Ad-
justment]
FPU Test mode
1) Adjust Item: [Balance]
Connect the Deviation Meter
to the TX ANT end via the ATT.
Deviation Meter setting
LPF: 3kHz
HPF: OFF
De-emphasis: OFF
2) Adjust Item: [A: Low],
[A: Center], [A: High],
[B: Low], [B: Center],
[B: High]
Press [Transmit] button.
20Hz is transmitted.
Deviation
meter
Oscilloscope
Rear
TX ANT
PC
ADJ
The Deviation of
20Hz frequency is
fi xed to 2.05kHz
Deviation.
Change the 2kHz
adjustment value to
become the same
deviation to 20Hz
within the specifi ed
range.
2kHz Tone deviation is within
±1.0% of 20Hz tone devia-
tion.
Press [Apply All] button to
store the adjustment value
after all adjustment point was
adjusted.
[2.0kHz
Adjustment]
FPU Test mode
1) Adjust Item: [Balance]
[2kHz Sine Wave] check box
is checked.
2) Adjust Item: [A: Low],
[A: Center], [A: High],
[B: Low], [B: Center],
[B: High]
Press [Transmit] button.
Check while transmitting
change to 2kHz.
10. Standard
Modulation
Check
[Analog
Wide]
1) Connect the Deviation Meter
to the TX ANT end via the ATT.
Deviation Meter setting
LPF: 15kHz
HPF: OFF
De-emphasis: OFF
Detector: (p-p)/2
2) Connect the AG to the MIC
Terminal of MIC connector.
AG
Frequency
: 1kHz (Sine Wave)
AG Output level: Adjust to
become the 3kHz Deviation.
Deviation
meter
Oscilloscope
AG
DVM
Rear
Front
TX ANT
MIC
Check
5.0mV±1.5mV
[Analog Nar-
row]
1) Connect the Deviation Meter
to the TX ANT end via the ATT.
Deviation Meter setting
LPF: 15kHz
HPF: OFF
De-emphasis: OFF
Detector: (p-p)/2
2) Connect the AG to the MIC
Terminal of MIC connector.
AG
Frequency
: 1kHz (Sine Wave)
AG Output level: Adjust to
become the 1.5kHz Deviation.
