Kenwood NXR-710 Service Manual page 48

NXR-710
Item Condition
9. Balance FPU Test mode
Adjust 1) Adjust Item: [Balance]
[20Hz Ad- Connect the Deviation Meter
justment] 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.
[2.0kHz FPU Test mode
Adjustment] 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 1) Connect the Deviation Meter
Modulation to the TX ANT end via the ATT.
Check Deviation Meter setting
[Analog LPF: 15kHz
Wide ] 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.
[Analog Nar- 1) Connect the Deviation Meter
row ] 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.
48
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Deviation Rear TX ANT
meter
Oscilloscope
Deviation Rear TX ANT
meter
Oscilloscope Front MIC
AG
DVM
Adjustment
Parts Method
PC The Deviation of 2kHz Tone deviation is within
ADJ 20Hz frequency is ±1.0% of 20Hz tone devia-
fi xed to 2.05kHz tion.
Deviation.
Change the 2kHz Press [Apply All] button to
adjustment value to store the adjustment value
become the same after all adjustment point was
deviation to 20Hz adjusted.
within the specifi ed
range.
Check 5.0mV±1.5mV
Specifi cations / Remarks