Agilent Technologies 85330A service manual Installing the Switch Control Units and Switches

Installation

Installing the Switch Control Units and Switches

Installing the Switch Control Units and Switches

Mounting the SCU and RF Switch

NOTE

Switch Control Unit

Configuration

Switches

If desired, you can mount the SCU using the supplied mounting screws. You must provide a mounting plate or drill holes in an existing structure before mounting an SCU or a switch. Refer to the mounting diagram in Figure 1-5 on page 1-11.

Make sure the 85383A local control cable can reach from the multiple channel controller to the SCU. Make sure the 85384A switch drive cable is long enough to reach from the SCU to the switch.

Changing any of the DIP switches inside the SCU is not recommended. All switch settings are made at the factory.

In a standard system (defined below), the following settings are used:

•SCU address is set to 0.

•Channel numbers 1 through 4 are used to select switch positions.

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 number assignments (1 through 4) for both switch modules. Since each SCU is on a different port, and each port is addressed independently, there is not a channel number conflict.

1-10 85330A Multiple Channel Controller