1260-X133 User Manual
Module Operation 3-4
Racal Instruments
©
2005
In this mode, relay operations are processed in less than 9
microseconds, not counting relay settling time or software
overhead inherent in I/O libraries such as VISA. To determine the
relay settling time, refer to Relay Settling Time in the Specifications
section.
Consult the 1260-01T User’s Manual for a comparison of the
message-based and register-based modes of operation.
Operating In
Message-Based
Mode
Channel
Descriptors For
The 1260-X133
The standard 1260-01T commands are used to operate the 1260-
X133 module. These commands are described in the 1260-01T
User’s Manual.
Each 1260-01T relay command uses a
channel descriptor
to select
the channel(s) of interest. The syntax for a channel descriptor is
the same for all 1260 series modules. In general, the following
syntax is used to select a single channel:
(@ <module address> ( <channel> ) )
Where:
•
<module address> is the address of the 1260-X133 module.
This is a number is in the range from 1 through 12, inclusive.
•
<channel> is the 1260-X133 channel to operate. They are
numbers from 0-3, 10-13, 20-23 etc. See Figure 2-1 and
Table 2-1.
Multiple individual channels may be specified using the following
channel descriptor syntax:
@ <module address> ( <chan1> , <chan2>
, . . ., <chanN> ))
A range of channels may be specified using the following channel
descriptor syntax:
@ <module address> ( <first channel> :
<last channel> ))
The following examples illustrate the use of the channel
descriptors for the 1260-X133:
OPEN (@8(0))
Open channel 0 on the 1260-X133
