Getting Started With The Hp E1366A/E1367A Rf Multiplexers; Using This Chapter; Multiplexer Module Description; Basic Operation - HP E1366A User Manual

Hewlett-packard rf multiplexers user's manual

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Table of Contents

HP E1366A/E1367A RF Multiplexers

Using This Chapter

Multiplexer Module Description

Basic Operation

Chapter 1

Getting Started with the

This chapter includes an RF multiplexer's description, addressing

guidelines, and an example to check initial operation. Chapter contents are:

Multiplexer Module Description . . . . . . . . . . . . . . . . . . . . . Page 11

Programming the Multiplexer Module . . . . . . . . . . . . . . . . . Page 13

Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15

The HP E1366A 50 RF Multiplexer (2 x 4:1) and the HP E1367A 75 RF

Multiplexer (2 x 4:1) are VXIbus and VMEbus B-size register-based

products which provide bidirectional switching and scanning for user inputs

and outputs. The multiplexers can operate in a B-size VXIbus or VMEbus

mainframe or (with an adapter) in a C-size VXIbus mainframe.

For the RF multiplexers, switching consists of connecting a channel to its

common terminal. Scanning consists of connecting a series of channels

(one at a time) to the appropriate common terminal.

The multiplexers consist of two banks of channels (bank 0 and bank 1) to

form two 4:1 multiplexers. Bank 0 includes channels 00 through 03 and

com 00. Bank 1 includes channels 10 through 13 and com 10. See Figure

1-1 for a simplified switching diagram.

Each channel is switched (connected to its common) by closing the

appropriate (nonlatching) relays. Channels 00 through 03 can be switched

to com 00, and channels 10 through 13 can be switched to com 10. Only

one channel in each bank can be connected to its common at a time.

User inputs and outputs to each channel are made through BNC connectors.

When open (disconnected from common), each channel is terminated in its

characteristic impedance (50 for the E1366A, 75 for the E1367A).

A termination resistor (50 for the HP E1366A or 75 for the HP E1367A)

is mounted on each channel, but can be removed as desired. At power-on or

reset, all channels are open and terminated in their characteristic impedance,

and both commons are open.