VXI VT1422A - Manual (Page 233)

VT1422A Command Reference 231 Chapter 7
Boolean Represents a single binary condition that is either
true or false:
ON, OFF, 1, 0.
Discrete Selects from a finite number of values. These parameters
use mnemonics to represent each valid setting.
An example is the TRIGger:SOURce <source> command
where <source> can be;
BUS, EXT, HOLD, IMM, SCP,TIMer, or TTLTrg<n>.
Channel List
(Standard Form) The general form of a single channel specification is:
cnn
where c represents the card number and nn represents the
channel number.
On-board Channels: Since the VT1422A has an on-board 64
channel multiplexer, the card number will always be 1 and the
channel number can range from 00 to 63. Some example
channel specifications:
channel 0 = 100, channel 5 = 105, channel 54 = 154
Remote Channels: The VT1422A uses the VT1539A SCP to
support RSCUs like the VT1529A/B. Through these SCPs, the
VT1422A can address up to 512 remote channels. The
VT1539A SCP has two measurement channels, that can each be
externally multiplexed to 32 channels. The remote channel
syntax is similar to the on-board syntax but with the addition of
two more channel reference digits:
cnnee
where c is the card number and again is always 1, nn references
only the first or second channel at any SCP position in the
VT1422A. So, nn can be any of 00, 01, 08, 09, 16, 17, 24, 25,
32, 33, 40, 41, 48, 49, 56, 57. The additional digits ee reference
one of 32 channels (00 through 31) on the Remote Signal
Conditioning unit connected to the on-board channel nn.
An example of an RSC Unit is the VT1529A/B Remote Strain
Bridge Conditioning Unit.
Some example remote channel specifications:
10000 = RSC channel 00 connected to VT1422A channel 00
10100 = RSC channel 00 connected to VT1422A channel 01
10122 = RSC channel 22 connected to VT1422A channel 01
12522 = RSC channel 22 connected to VT1422A channel 25
Specifying a range of Channels: The General form of a
channel range specification is:
1nn[ee]:1nn[ee] (colon separator)
[ee] means optional remote channels. The second channel must
be greater than the first.