Models 707B and 708B Switching Matrix Reference Manual
Section 5: Remote commands
707B-901-01 Rev. A / August 2010
5-25
Example: Channel open with matrix-ready functionality
function chanOpen(chan)
Function accepts valid channels as arguments
digio.writebit(10,0)
Clear the 10th digital I/O bit before the open
operation
channel.open(chan)
Open the channels in the argument
digio.writebit(10,1)
Set the 10th digital I/O bit after the open
operation
end
End the function
Set VFD display
The following commands display a value on the VFD front panel. To return the display to power-on
default, send the command:
display.screen = display.main
The display can also be cleared with the
display.clear()
command. For more information, see
display functions and attributes.
VFD display
DDC
TSP equivalent command
Description
Dccccccc
display.screen = display.USER
Set VFD display text
display.settext()
Set relay setup data format
The
Gn
DDC command controls the data format of relay setups that are returned when queried with
the
U2,s
command. The Model 707B or 708B uses a string format for returning scan list, so data
formatting is not used.
Relay setup data format
DDC
TSP equivalent command
Description
Gn
No corresponding command
Data format
GPIB EOI hold off control
The
Kn
DDC command controls how the GPIB EOI line behaves. The Model 707B or 708B
commands are processed from an internal buffer as they are received, so no control is required for
the GPIB EOI line.
GPIB EOI hold off
DDC
TSP equivalent command
Description
Kn
No corresponding command
GPIB EOI/hold off control
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
C-1).