The Keysight 34945A switch/attenuator driver module for the 34980A Multifunction Switch/Measure Unit allows you to control switches and attenuators external to the 34980A Mainframe. This module provides power and control signals for many of the most popular microwave switches and attenuators.

One 34945A /34945EXT combination can drive up to 64 switch coils—that’s 32 standard SPDT switches. The 34945A /EXT can be extended by adding additional 34945EXT boards. The first 34945EXT is powered by the mainframe. You can add up to seven additional 34945EXT boards with user-supplied power. Multiple switch operations are performed in sequential order, or for faster, simultaneous switching, you can connect an external power supply to the 34945EXT.

The Y1150A-Y1155A distribution boards enable simple connections to the external switches. The distribution boards plug onto the 34945EXT and are used to route the power and control signals from the driver module to the switches using standard cables.

Distribution boards

• Y1150A - for 8 N181x SPDT Switches
• Y1151A - for two 87104x/106x L7x0xx Multiport or 87406B Matrix Switches
• Y1152A - for One 87204x/206x or 87606B Switch and Two N181x Switches
• Y1153A - for Two 84904/5/6/7/8 or 8494/5/6 Step Attenuators
• Y1154A - for Two 87222, L7222C Transfer Switches and Six N181x SPDT Switches
• Y1155A - with Generic Screw Terminals for Driving 16 Switch Coils

Cables

• Y1157A - 9 to 10-pin Cable Kit for Y1150A, Y1152A, Y1154A
• Y1158A - 10 to 10-pin / 10 to 14-pin Cable Kit for Y1153A, Y1154A
• Y1159A - 16-to-16 pin cable kit for Y1150A/51A/52A/53A/54A/55A