HP 34970A HP 34905A/6A Dual 4-ChannelRF Multiplexers, HP 34905A/6A Dual 4-ChannelRF Multiplexers, These modules consist of two independent 4-to-1multiplexers

Chapter 4 Features and Functions

HP 34905A/6A Dual 4-Channel RF MultiplexersHP 34905A/6A Dual 4-Channel RF MultiplexersThese modules consist of two independent 4-to-1 multiplexers.

The channels in each bank are organized in a “tree” structure to provide high isolation and low VSWR. Both banks have a common earth ground. This module does not connect to the internal DMM. You can connect your signals directly to the on-board SMB connectors or to the SMB-to-BNC cables provided with the module.

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Bank Switch Com1

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Bank Switch Com2

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NOTES:

∙The HP 34905A is used for 50Ω applications. The HP 34906A is used for 75Ω applications.

∙You can close only one channel per bank at a time on these modules; closing one channel in a bank will open the previously closed channel. One channel in each bank is always connected to COM.

∙This module responds only to the CLOSE command (OPEN does not apply). To OPEN a channel, send the CLOSE command to another channel in the same bank.

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