C3.4
T856/857 Initial Tuning & Adjustment
M850-00
31/09/98 Copyright TEL
3.3 Test Equipment Required
You will need the following test equipment:
• computer with PGM800Win installed
• T800 programming kit
• module programming interface (e.g. T800-01-0004 - optional)
• 13.8V power supply
• digital multimeter
• audio signal generator
• RF power meter
• audio voltmeter x 2
• modulation meter
• oscilloscope (digital preferred)
• 20dB or 40dB pad
• T800-01-0010 calibration test unit (optional)
Figure 3.1 and Figure 3.2 show typical test equipment set-ups.
Figure 3.1 T856/857 Test Equipment Set-up With T800-01-0010
Figure 3.2 T856/857 Test Equipment Set-up Without T800-01-0010
or RF test set (optional)
Frequency
Counter
Audio
Voltmeter
RF Power
Meter
Oscilloscope
AF O/P
Modulation
Meter
20dB pad: exciter
40dB pad: transmitter
RF O/P
PGM800Win
PSU
+13.8V
-Ve
Audio
Generator
Line I/P
CTCSS I/P
Ω600
Audio
Voltmeter
Exciter/
Transmitter
T800
Calibration
Test Unit
PGM800Win
Serial
Com
PSU
+13.8V
-Ve
Frequency
Counter
Audio
Voltmeter
RF Power
Meter
Oscilloscope
AF O/P
Modulation
Meter
20dB pad: exciter
40dB pad: transmitter
Audio
Generator
Line I/P
CTCSS I/P
Ω600
Audio
Voltmeter
Key
RF O/P
Exciter/
Transmitter
via module programming interface
(e.g. T800-01-0004)