Chapter 5 Functional Description

Functional Block Description of the 58502A

1-to-12 Amplifiers and Isolators Block

This block consists of twelve separate individual isolation amplifiers that accomplish the distribution of the source frequency (ranging from 100 kHz to 10 MHz) into twelve available output channels with very low phase noise and signal distortion at the rear-panel output BNC connectors. In addition, each output is impervious to the effects an adjacent channel short or open connection during normal operation.

A single input signal feeds all twelve isolation amplifiers that is routed from the output of the 2-to-1 Switch block. This block includes BITE hardware (Built In Test Equipment) that monitors the presence of all twelve outputs and routes this information to the Controller block via the output condition signal line.

Power Supply Module Block

This block provides +5, +15, and -15 Vdc to all other blocks in the instrument. When ac power is used, it provides fuse protection, steps down, rectifies, filters, regulates, and distributes internal dc power.

User’s Guide

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