Chapter 2 75
Block Diagrams
A12 Analog IF Assembly
Triggering
The analog IF board has a second IF strip for generating triggers.
Power Supply Switching Frequency Generator
The power supply switches at a rate of 244 kHz. This frequency rate is
determined by the power supply switching circuitry on the A12 analog
IF assembly.
Interconnections to other assemblies
• A12J13. 21.4 MHz (at -2 dBm) in from the A17 RF board.
• A12J5. Front panel external trigger input.
• A12J18. Rear panel external trigger input.
• A12P2. 7.5 MHz (at +5 dBm) out to A10 digital IF assembly.
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