1257 User Manual
Advanced SCPI Operations 7-6
EADS North America Defense
Test and Services, Inc.
©
2001
The first command establishes an exclude list of channels 0
through 7 and another for channels 8 through 15.
The second command closes channel 0.
The third command closes channel 8. This command will cause
channel 0 to open, since both channels are on the exclude group
together.
The fourth command closes channel 17. Channel 15 is never
closed, since it is excluded by channel 17. Channel 8 is opened
prior to closing channel 17, since channels 8 and 17 are on the
exclude group together.
The INCLUDE and EXCLUDE relationships of channels can cause
multiple closures and openings when commanding a single
channel to close. For example, assume the following commands
have been executed:
INCLUDE (@1(0:5,10,12))
INCLUDE
(@1(13:19))
EXCLUDE
(@1(0,13)
EXCLUDE
(@1(1,14))
EXCLUDE
(@1(2,15))
CLOSE
(@1(0))
After these commands have been executed, channel 0 is closed.
Also, channels 1 through 4, 10 and 12 are closed, since these are
on the same include list as channel 0.
Now, if the command:
CLOSE (@1(13))
is executed, the following actions occur:
A)
Channel 0 is opened since it is on an exclude list with
channel 13
B)
Channels 1, 2, 3, 4, 10, and 12 are opened since they are
on an include list with channel 0
C)
Channel 13 is then closed.
After power-up, and after a “*RST” command has been executed,
all EXCLUDE lists are deleted if they are not first saved into non-
volatile memory.
