TKR-851
37
ADJUSTMENT
Test Equipment Required for Alignment
Test Equipment
Major Specifications
1. Standard Signal Generator
Frequency Range
400 to 512MHz
(SSG)
Modulation
Frequency modulation and external modulation
Output
0.1
µ
V to greater than 1mV
2. Power Meter
Input Impedance
50
Ω
Operation Frequency
400 to 512MHz or more
Measurement Capability
Vicinity of 30W
3. Deviation Meter
Frequency Range
400 to 512MHz
4. Digital Volt Meter
Measuring Range
1 to 20V DC
(DVM)
Accuracy
High input impedance for minimum circuit loading
5. Oscilloscope
DC through 30MHz
6. High Sensitivity
Frequency Range
10Hz to 600MHz
Frequency Counter
Frequency Stability
0.2ppm or less
7. Ammeter
10A or more
8. AF Volt Meter
Frequency Range
50Hz to 10kHz
(AF VTVM)
Voltage Range
3mV to 3V
9. Audio Generator (AG)
Frequency Range
50Hz to 5kHz
Output
0 to 1V
10. Distortion Meter
Capability
3% or less at 1kHz
Input Level
50mV to 10Vrms
11. Voltmeter
Measuring Range
10 to 1.5V DC or less
Input Impedance
50k
Ω
/V or greater
12. 4
Ω
Dummy Load
Approx. 4
Ω
, 5W
The following parts are required for adjustment
• Test cable for local microphone
• The following test cables are recommended.
MIC connector (Front panel view)
1 : NC
2 : +B
3 : GND
4 : PTT/TXD1 (PC serial data from radio)
5 : MIC GND
6 : MIC
7 : HOOK/RXD1 (PC serial data to radio)
8 : NC
Test cable for microphone input
To connect the TX-RX unit A/2 (CN14) to the TX-RX unit B/
2 (CN602) while in servicing, you can use the 36-pin flat
cable, E37-0979-05, which is available from the KENWOOD
parts center.
Flat cable (36-pin) about 256mm
8
1
Cut
HOOK
(GRY)
MIC (WHT)
MICG (SHIELD)
To
AG
AF VTVM
PTT
(BLU)
GND
(BLK)
PTT SW
Plug cord
Part No. E30-3360-18
8 pin
8 pin