5-81
5.13.4
:FCHannels <list>
[:ROUTe]:FCHannels <list>
Define “forbidden” channel list
<list> = (@ forblist)
where; forblist is the specified list of “forbidden” channels that cannot be closed.
:fch (@
forblist)
Power-up
Last defined “forbidden” channel list
*RST
No effect
:SYSTem:PRESet
No effect
:FCHannels?
Query “forbidden” channel list
Short-form formats:
:fch?
Response message:
List of “forbidden” channels
The :FCHannels <list> command is used to define a list of channels that cannot be closed. The
following examples demonstrate various forms for expressing a forblist:
Forblist
1!1
Single channel (Slot 1, Channel 1).
1!6, 1!18, 2!3!6
Channels separated by commas.
1!2:1!10
Range of channels (2 through 10).
1!2:1!10, 1!20
Range entry and single entry separated by commas.
M36
Channel pattern stored at memory location M36.
A “forbidden” channel list can be cancelled by sending an empty forblist as follows:
:fch (@)
If you specify a channel to be restricted and it is already included in the Scan List and/or a Chan-
nel Pattern, then the entire Scan List and/or Channel Pattern is cleared (lost).
10
OUTPUT 707; “:fch (@ 1!1, 1!4); fch?”
20
ENTER 707; A$
30
PRINT A$
40
END
Line 10
Define the “forbidden” channel list and query the the list.
Line 20
Address the Model 7001 to talk.
Line 30
Display the list.
Parameter
Short-form
formats
Defaults
Query
command
Description
Programming
example
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