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Getting Started with the HP E1346A
Using This Chapter
Instrument Definition
Multiplexer Module Description
General Description
Chapter 1
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This chapter describes the HP E1346A 48-Channel Single Ended Relay
Multiplexer Module, and shows how to program the module using SCPI
(Standard Commands for Programmable Instruments) commands. This
chapter contains the following sections:
•
Multiplexer Module Description . . . . . . . . . . . . . . . . . . . . . . Page 11
•
Programming the Multiplexer Module . . . . . . . . . . . . . . . . . Page 13
•
Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
HP plug-in modules installed in an HP mainframe are treated as
independent instruments each having a unique secondary HP-IB address.
Each instrument is also assigned a dedicated error queue, input and output
buffers, status registers and, if applicable, dedicated mainframe memory
space for readings or data. An instrument may be composed of a single
plug-in module (such as a counter) or multiple plug-in modules (for a
Switchbox or Scanning Voltmeter Instrument).
Refer to Figure 1-1 for the following explanations of the 48-Channel Single
Ended Relay Multiplexer Module.
The multiplexer module provides switching (multiplexing) of up to 48
channels (i.e., channels 00 to 47). Each channel switches only a High (H)
connection. The Low (L) and Guard (G) connections are common for each
channel. The multiplexer module can only close one channel at a time.
The multiplexer module consists of a component assembly and a terminal
block. The channel relay switches are on the component assembly. The
field wiring from user sources connect to the terminal block. The terminal
block also provides connections for multimeters, voltmeters, counters, and
other measuring devices.
Getting Started with the HP E1346A
Chapter 1
11
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