Agilent Technologies E8462A, User Manual

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Configuring the Agilent E8462A Multiplexer 29
Programming the Multiplexer
To program the Agilent E8462A Multiplexer using SCPI, you must know
the interface and module address and SCPI commands to be used.
Guidelines to select SCPI commands for the Multiplexer follow. See the
Agilent 75000 Series C Installation and Getting Started Guide for interface
addressing.
Note
This discussion applies only to SCPI (Standard Commands for
Programmable Instruments) programming. See Appendix B for
information on the Multiplexer's registers.
Specifying SCPI
Commands
To address specific channels within a Multiplexer, you must specify the
SCPI command and channel address. Use
CLOSe < channel_list> to close
the channels specified, OPEN < channel_list> to open the channels
specified, and SCAN < channel_list> to close and open the set of channels
specified, one channel at a time.
Channel Address
The Multiplexer's channel address ( channel_list ) has the form (@ccbnnn)
where cc = module (card) number (01-99), b = bank or MUX number (0 to
one less than banks or muxes) and nnn = channel numbers. The channel
number consists of three parts listed in the below table:
The tree relays and analog bus relays have the same channel number no
matter what operating mode the Multiplexer is. But the channel relays
(CH000-255) may have different channel numbers under different operating
mode. See the following table:
Channel List Card Number
(cc)
Bank or Mux
(b)
Channel Number
(nnn)
Channel Description
ssbccc 01-99
0-7 000-255 256 channel relays
9 000-021 22 tree relays
9 100-108 9 Form C tree relays
9 200-204 5 analog bus relays
Operating Mode Valid Channel
Number
Corresponds to 1-Wire Mode Channel
1-wire 000-255 000-255
2-wire 000-127 000-031, 064-095, 128-159, 192-223
(Channel 000 is paired with channel 032, 001
is paired with 033, etc. Channel 064 is paired
with 096, 065 with 097, etc. Channel 128 is
paired with 160, channel 129 with 161, etc.
Channel 192 is paired with 224, channel 193
with 225, etc.)
3-wire 000-063 000-031, 128-159
4-wire 000-063 000-031, 128-159