Section 5: Introduction to TSP operation
Models 707B and 708B Switching Matrix Reference Manual
5-24
707B-901-01 Rev. B / January 2015
Service request configuration
These commands control the behavior of the SRQ line. The Model 707B or 708B instrument can
configure some of the events that cause the SRQ to assert, but none of those events address Matrix
Ready or when the instrument is ready for trigger. For more information, see
(on page 5-13).
Service request configuration
DDC
TSP equivalent command
Description
M0
status.request_enable = 0
Disable SRQ
M8
No corresponding command
SRQ on Matrix Ready
M16
No corresponding command
SRQ on Matrix Ready
M32
status.request_enable =
status.ERROR_AVAILABLE
SRQ on error
Digital I/O control
The Model 707B or 708B instrument provides increased flexibility, with fourteen digital I/O lines
(compared to the Model 707A, which has eight input lines and eight output lines, and the Model 708A,
which has sixteen input lines and sixteen output lines). It is also possible to write to the digital I/O port
simultaneously or on a per-bit basis. For more information, see the
(on page 5-8) section.
Digital I/O control
DDC
TSP equivalent command
Description
Onnn
Db,s
digio.writeport(data)
or
digio.writebit(bit,data)
Sets states of digital I/O
Additional channel settling time
The Model 707A or 708A had the ability to add relay settling time to the system after a channel closes
or opens. The Model 707B or 708B improves on the settling time and allows you to apply additional
settling delay on a per-channel basis. For more information, see
channel functions and attributes
page 5-4).
Additional channel settling time
DDC
TSP equivalent command
Description
Sn
channel.setdelay(channelList,value)
Additional settling time