TM-V708A
33
ADJUSTMENT
VOL control
Fully counterclockwise
SQL control
Fully counterclockwise
POWER switch
OFF
(For fixed stations)
OFF
DC power supply POWER switch
Measuring Equipment for Adjustment
1. Digital voltmeter (D.V.M)
Input impedance: High
2. RF valve voltmeter (RF V.M)
Input impedance: 1M
Ω
or more, 2 pF or less Voltage
range: Full scale = 10mV to 300V Measurable frequency
range: up to 450MHz
3 .Frequency counter (f.counter)
Input sensitivity: About 50mV
Measurable frequency: 450MHz or more
4. DC power supply
Voltage: Variable in the range 10 to 17V
Current: 13A or more
5. Power meter
Measurement power: 60W, 30W, 10W
Impedance: 50
Ω
Measurable frequency: 450MHz
6. AF valve voltmeter (AF V.M)
Input impedance: 1M
Ω
or more
Voltage range: Full scale = 1mV to 30V
Measurable frequency range: 50Hz to 10kHz
7. AF generator (AG)
Output frequency: 100Hz to 10kHz
Output voltage: 0.5mV to 1V
8. Line detector
Measurable frequency: 450MHz
9. Spectrum analyzer
Measurable frequency: 450MHz
10.Directional coupler
11.Oscilloscope
High sensitivity with horizontal input terminal
12. Standard signal generator (SSG)
The standard signal generator must be able to generate
the 1GHz band frequencies and vary the amplitude and
frequency
Output: -133dBm to greater than -13dBm
13. Dummy load (for AF)
8
Ω
, about 5W
14. Noise generator
The noise generator must be able to generate noise
similar to ignition noise containing high-frequency
components of 450MHz or more.
15. Sweep generator
The sweep generator must be able to sweep the 144 and
430MHz bands.
16. Tracking generator
17. Adjustment jig
Preparation
• Set the controls and switches to the positions listed below
unless otherwise specified.
Microphone socket
(as viewed from the front of the set)
• Use an insulated rod, such as a plastic rod, for adjustment
(especially for trimmers, coils, etc.).
• To protect the signal generator, never connect the
microphone to the microphone socket when the receiver
section is adjusted.
• Before the power cord is connected, make sure the power
switch is off.
• Without specification of SSG, standard modulation is
applied (MOD : 1kHz, DEV :
±
3kHz, AF output: 0.63V/8
Ω
)
• See the instruction manual for transmit and receive
operations.
UP
C8
(DC8V:100mA max.)
NC
MIC
ME
E
PTT
DWN
