User's Manual Part 6
673) +
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• AF signal generator
• distortion analyser
• frequency counter
• Modulation analyser
• High impedance voltmeter (e.g. VTVM)
• Oscilloscope
• Power meter
• Power supply (+13.8V)
• RF signal generator
• 40dB RF attenuator
• 600Ω step attenuator
The following diagram shows the test set-up.
' 12 $3
RF RF
4Ω
Speaker
Line In/Out
600Ω
Pwr/Spkr
Option Board
Control Board
RF
OPT
S21-12
Busy/Rx Gate Out
1K
5V Logic
S20-10 Gnd
DC Control
S21-1 Opto In
Opto In
S21-4 +13.8V Out
S21-3 +8V Out
Opto Key
S21-2 Opto Out
Frequency
Counter
AF
Signal
Generator
Ext. AF
RF Signal
Generator
RF Modulation
Analyser
AF
+13.8V
Power
Supply
40dB
Pad
Power
Meter
Dummy
Mic. &
PTT
Audio
Voltmeter
Audio
Voltmeter
Distortion
Meter
AF
Signal
Generator
Oscilloscope
Frequency
Counter
T2000
Main
Board
Test Signal
600Ω
Step Attenuator
Mic. Socket
Test Signal
(Speech)
Test
Mic. &
PTT
S20-11 PTT In