24
ADJUSTMENT
1) Required Test Equipment
The following items are required to adjust radio parameters.
1. Regulated Power Supply
Supply
voltage:
6.0VDC
Current:
1A
or
more
2. Digital Multimeter
Voltage
range:
FS
=
Approx.
20V
Current:
10A
or
more
Input
resistance:
High
impedance
3. Oscilloscope
Measurable
frequency:
Audio
Frequency
4. Audio Dummy Load
Impedance:
8
Ω
Dissipation:
1W
or
more
Jack:
2.5
Ф
5. SSG
Output
frequency:
500MHz
or
more
Output level:
-20dBµ / 0.1µV to 120dBµ / 1V
Modulation:
FM
/
AM
6. Spectrum Analyzer
Measuring range:
Up to 2GHz or more
7. Power meter
Measurable
frequency:
Up
to
500MHz
Impedance:
50
Ω
unbalanced
Measuring
range:
0.1W
to
1W
8. Audio Voltmeter
Measurable
frequency:
Up
to
100kHz
Sensitivity:
1mV
to
10V
9. Audio Generator
Output
frequency:
67Hz
to
10kHz
Output
impedance: 600
Ω
unbalanced
10. Distortion Meter / SINAD Meter
Measurable
frequency:
1kHz
Input
level:
Up
to
40dB
Distortion
level:
1%
to
100%
11. Frequency Counter
Measurable
frequency:
Up
to
500MHz
Measurable
stability:
Approx.
±
0.1ppm
12. Linear Detector
Measurable
frequency:
Up
to
500MHz
Characteristics:
Flat
CN:
60dB
or
more
Note
· Standard modulation:
1kHz ± 3.5kHz / DEV
· Reference sensitivity:
12dB SINAD
· Specified audio output level:
200mW at 8
Ω
· Standard audio output level:
50mW at 8
Ω
· Use an RF cable (3D2W: 47cm) for test equipment.
· Attach a fuse to RF indicated by EMF.
· All SSG outputs are indicated by EMF.
· Supply voltage for the transceiver: 6.0VDC
Summary of Contents for DJ - C7 T
Page 17: ...17 EXPLODED VIEW 1 Front View ...
Page 18: ...18 2 Rear View ...
Page 29: ...29 PC Board View MAIN Side A VCO CASE TS0174 ...
Page 30: ...30 MAIN Side B X2 No gap 1mm less than 1mm ...
Page 31: ...31 PC Board View KEY Side A MIC301 No gap ...
Page 32: ...32 KEY Side B ...
Page 33: ...33 BATTERY Side A BATTERY Side B PTT Side A B ROTARY ENCODER Side A B ...
