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Agilent E1366A/E1367A RF Multiplexers
Using This Chapter
Multiplexer Module Description
Basic Operation
Chapter 1
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 Agilent E1366A 50Ω RF Multiplexer (2 x 4:1) and the Agilent E1367A
75Ω 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 (50Ω for the E1366A, 75Ω for the E1367A).
A termination resistor (50Ω for the Agilent E1366A or 75Ω for the Agilent
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.
Getting Started with the Agilent E1366A/E1367A RF Multiplexers
Getting Started with the
Chapter 1
11
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