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8
ADC/lnterface Section
The ADC/Interface section includes the
AlAl
keyboard,
AlA
RPG (rotary pulse generator),
A3 interface, and Al6 fast ADC (Option 007)
assemblies. Table 8-l lists signal versus pin
numbers for control cable W2.
Troubleshooting Using the TAM
Automatic Fault Isolation
Keyboard/RPG Problems
Keyboard Interface
RPG Interface
Triggering or Video Gating Problems
Preselector Peaking Control (Real Time DAC)
Flatness Control (RF Gain DACs)
A3 Assembly Video Circuits
Log Offset/Log Expand
Video MUX
Video Filter
Video Filter Buffer Amplifier
Positive/Negative Peak Detectors
Peak Detector Reset
Rosenfell Detector
ADC MUX
Variable Gain Amplifier (VGA)
Track and Hold
A3 Assembly ADC Circuits
ADC Control Signals
ADC Start/Stop Control
ADC ASM
ADC
Ramp Counter
A3 Assembly Control Circuits
Analog Bus Drivers
Analog Bus Timing
Interface Strobe Select
Al6 Assembly Fast ADC Circuits (Option 007)
Video Input Scaling Amplifiers and Limiter
8-Bit Flash ADC
Peak/Pit Detection
32 K-Byte Static RAM
Al6 Assembly Fast ADC Control Circuits (Option 007)
CPU Interface and Control Registers
Reference Clock
Clock and Sample Rate Generator
ADC/lnterface
Section
6-1