Adjustment - Kenwood NXR-810 Service Manual

NXR-810
Test Equipment Required for Alignment
Test Equipment
1. Standard Signal Generator
(SSG)
2. Power Meter
3. Deviation Meter
4. Digital Volt Meter (DVM)
5. Oscilloscope
6. High Sensitivity
Frequency Counter
7. Ammeter
8. AF Volt Meter (AF VTVM)
9. Audio Generator (AG)
10. Distortion Meter
11. Voltmeter
12. 4Ω Dummy Load
Test cable for microphone input (E30-3360-28)
GREEN
1
RED
2
BLACK
3
BLUE
4
SHIELD
5
WHITE
6
GRAY
7
YELLOW
8
MIC connector (Front panel view)
8 1
1: NC
2: SB
3: GND
4: PTT/TXD
5: MIC GND
6: MIC
7: HOOK/RXD
8: NC
64

ADJUSTMENT

Frequency Range
Modulation
Output
When performing the Frequency adjustment, the following accuracy is necessary.
• 0.001ppm
Use a standard oscillator for adjustments, if necessary.
Input Impedance
Operation Frequency
Measurement Capability
Frequency Range
Measuring Range
Input Impedance
Frequency Range
Frequency Stability
Frequency Range
Voltage Range
Frequency Range
Output
Capability
Input Level
Measuring Range
Input Impedance
1
2
E
3
PTT
4
MIC-E
5
MIC
6
HK
7
8
(PC serial data from transceiver)
(PC serial data to transceiver)
Major Specifi cations
400 to 470MHz
Frequency modulation and external modulation
–127dBm/0.1µV to greater than –20dBm/22.4mV
50Ω
400 to 470MHz or more
Vicinity of 100W
400 to 470MHz
1V to 20V DC
High input impedance for minimum circuit loading
DC through 30MHz
10Hz to 600MHz
0.2ppm or less
15A or more
50Hz to 10kHz
3mV to 3V
50Hz to 5kHz
0 to 1V
3% or less at 1kHz
50mV to 10Vrms
10V to 1.5V DC or less
50kΩ/V or greater
Approx. 4Ω, 5W
Tuning cable (E30-3383-05)
Adapter cable (E30-3383-05) is required for
injecting an audio if PC tuning is used.
See "PC Mode" section for the connection.
Flat cable (36-pin) about 256mm
To connect the Control unit (CN38) to the TX-RX unit
(CN800) while in servicing, you can use the 36-pin fl at cable,
E37-0979-05, which is available from the KENWOOD parts
center.
Lead wire +
Shield wire –
MIC