Table 5-7. Test Point Identification
Module
A7
Processor I/O
A9
Processor
A12
Front Panel
Interface
Test Point No.
4
5
6
7
8
9
1
2
3
4
5
1
2
3
4
5
6
7
8
1
Signal Description
Synth. D/A Output
Ground
Composite Modulation Audio
Composite External Mod. Audio
Synthesizer Clock 104, 857.6 Hz
1 kHz Modulation Source
A/D Input
Unfiltered 10.245 MHz T.V.
DVM/Freq. Counter Select
Frequency Counter Input
Not Used
Ground
Character Clock
Character Row Clock
Character Dot Clock
Enable
Character Line Clock
R/W Select
Char. Gen/Processor Select
Attenuator Buffer Output
5-43
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