Test Equipment Required For Alignment; Antenna Connector Adapter; Nut Wrench; Battery Jig (W05-1370-00) - Kenwood NX-300 Service Manual

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. 8Ω Dummy Load
12. Regulated Power Supply

■ Antenna connector adapter

The antenna connector of this transceiver uses an SMA
terminal.
Use an antenna connector adapter [SMA(f) – BNC(f) or
SMA(f) – N(f)] for adjustment. (The adapter is not provided
as an option, so buy a commercially-available one.)

■ Nut wrench

In order to turn the volume nut and the channel selector
nut, use a recommendation tool.
KENWOOD part No.: W05-1123-00

■ Battery jig (W05-1370-00)

Connect the power cable properly between the battery
jig installed in the transceiver and the power supply, and
be sure output voltage and the power supply polarity prior
to switching the power supply ON, otherwise over voltage
and reverse connection may damage the transceiver, or the
power supply or both.
+ Terminal (Red)
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
- Terminal (Black)
Major Specifi cations
400 to 520MHz
Frequency modulation and external modulation
–127dBm/0.1µV to greater than –20dBm/22.4mV
50Ω
400 to 520MHz
Vicinity of 10W
400 to 520MHz
10mV to 10V DC
High input impedance for minimum circuit loading
DC through 30MHz
10Hz to 1000MHz
0.2ppm or less
5A
50Hz to 10kHz
1mV to 10V
50Hz to 5kHz or more
0 to 1V
3% or less at 1kHz
50mV to 10Vrms
Approx. 8Ω, 3W
5V to 10V, approx. 3A
Useful if ammeter equipped
Notes:
• When using the battery jig, you must measure the volt-
age at the terminals of the battery jig. Otherwise, a slight
voltage drop may occur within the power cable, between
the power supply and the battery jig, especially while the
transceiver transmits.
• The battery jig is detected as "Li-ion High Capacity Bat-
tery".
Li-ion High Capacity Battery: R1=1.8MΩ or Open
Li-ion Normal Capacity Battery: R1=560kΩ
Schematic diagram
S
–
+
NX-300
–Terminal
(Black)
Power Power
cable supply
+
+Terminal
(Red)
43