Agilent Technologies 85330A Standard System, Switch Control Unit, Switch Module, Typical

Glossary

Standard System

A “standard system” uses one 85330A with one or two switch control units, each with a two-throw or four-throw switch module. Remember that 85330A PORT 1 and PORT 2 are addressed independently. So:

•If you have two SCUs, both can use the default SCU address (0).

•You can use the default channel numbers (1 through 4) for both switch modules. Since each SCU is on a different port, and each port is addressed independently, there is no channel number conflict.

Switch Control Unit

Each switch control unit (SCU) provides bias and switch control of one switch module. Each SCU contains a decoder board, which allows you to set the SCU to a unique SCU address from 0 to 3 using DIP switches. The factory default setting is 0.

Switch Address

This is the complete software address for a specific switch. It is simply a concatenation of the SCU address (0, 1, 2, or 3) with the channel number (usually 1, 2, 3, or 4, but possibly a number up to 64).

Examples:

@2 = SCU address is 0 (and need not be specified), and channel 2 is selected.

@103 = SCU address 1 and channel 3 selected (usually a custom system).

@232 = SCU address is 2 and channel 32 is selected (custom systems only).

Switch Module

The single-pole two-throw (SP2T) or single-pole four-through (SP4T) RF switch. The switch module is controlled by a Switch Control Unit.

Typical

When a specification is noted as being typical it means that most units exhibit the stated performance, but not all. For this reason, the specification in not guaranteed by Agilent Technologies. Generally, typical specifications are provided for non-critical performance categories.

85330A Multiple Channel Controller A-5