HP E1368A manual Connecting Switches External To the Module

Connecting

Switches External

to the Module

Caution

Connection of up to five coaxial switches (channels 00-04) is described below. Figure 2-4 shows the wiring diagram for each switch connected.

The maximum current that the control circuit can accommodate is 1 amp per switch. Maximum current also depends on the output capacity of the mainframe or power supply used.

After selecting the coaxial switches, connect to the 14-pin connector as follows:

1.Route an 11-wire cable (not-supplied) from the 14-pin connector on the Microwave Switch module to the switch location. Route the wires through the panel holes as not to catch or snag on any objects during module installation in the mainframe or control module.

2.Connect all C+ terminals on all the coaxial switches to pin 6.

3.Connect CH00 through CH04 switch terminals as required.

CH00 1 terminal to pin 13, and the 2 terminal to pin 2.

CH01 1 terminal to pin 11, and the 2 terminal to pin 5.

CH02 1 terminal to pin 3, and the 2 terminal to pin 9.

CH03 1 terminal to pin 4, and the 2 terminal to pin 10.

CH04 1 terminal to pin 7, and the 2 terminal to pin 8.

4.Select correct switch operating voltages (see “ Sele cting Switch Power” later in this chapter).

Figure 2-4. Microwave Switch Connection

Chapter 2 Configuring the HP E1368A/69A/70A Modules 23