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1257 User Manual
EADS North America Defense
Advanced SCPI Operations 7-15
Test and Services, Inc.
©
2001
1(0),state14,1(224))
Define a path name (“example”) and then define a SCAN list. Each
time a trigger is received, the next channel, path, or state in the
scan list is closed after the previous channel or path is opened.
Using the SCAN command example above, the following
sequence of actions occurs:
A) After a trigger is received, channel 323 is closed
B) After the next trigger, channel 323 is opened, channel 0 is
closed
C) After the next trigger, channel 0 is opened, channel 1 is
closed
D) After the next trigger, channel 1 is opened, channel 2 is
closed
E) After the next trigger, channel 2 is opened, channel 8 is
closed
F)
After the next trigger, channel 8 is opened, channel 7 is
closed
G) After the next trigger, channel 7 is opened, channel 6 is
closed
H) After the next trigger, channel 6 is opened, channel 5 is
closed
I) After the next trigger, channel 5 is opened, and all channels
defined for the path “example” are closed. (channels 0, 5, 10,
and 13)
J) After the next trigger, all the channels defined for the path
“example” are opened, and channel 0 is closed
K) After the next trigger, channel 0 is opened, and the state of all
channels controlled by the 1257 is recalled from nonvolatile
memory. The state of the relays is recalled from state location
14.
L) After the next trigger, channel 224 is closed. Note that the
channels recalled from nonvolatile memory are
NOT
opened.
M) After the next trigger, channel 224 is opened, and channel
323 is closed. The scan list has “wrapped around” to the
beginning of the list.
Each time the SCAN command is executed, the previously defined