IEEE-488 Reference
5-86
:POLE? Query pole mode for specified slot
Short-form formats: :conf:slot:pole?
:conf:slot2:pole?
Response message: 1 (1-pole mode)
2 (2-pole mode)
4 (4-pole mode)
Some cards have the capability to operate as more than one switch type. For example, the Model
7011 multiplexer card can be used for 40-channel, 2-pole switching, or for 20-channel, 4-pole
switching.
The switch cards that have an additional pole mode capability are summarized as follows:
Pole Mode:
Card 1-Pole 2-pole 4-pole
7011 N/A 40 channels 20 channels
7056 20 channels 10 channels N/A
7156 20 channels 10 channels N/A
Keep in mind that the card must be wired appropriately for the selected pole mode. For more
information on Pole-Mode, see Section 4 of this manual.
The factory default is the 2-pole mode for all cards. The :POLE command is used to select an
alternate pole mode for the card in the specified slot. An invalid pole mode cannot be selected
and will result in an error message.
Changing the pole mode for a slot could cause a channel to become unavailable. As can be seen
from the above table for the Model 7011 mux card, 20 channels become unavailable when
changing from 2-pole to 4-pole operation. If one or more of these unavailable channels were in-
cluded in the Scan List and/or in a Channel Pattern, then the entire Scan List and/or affected
Channel Pattern will be lost (cleared).
10 OUTPUT 707; “:conf:slot:pole 4; pole?”
20 ENTER 707; A$
30 PRINT A$
40 END
Line 10 Selects the 4-pole mode for Slot 1 and then queries the pole mode.
Line 20 Addresses the 7001 to talk.
Line 30 Displays the pole mode for Slot 1 (4).
Query
command
Description
Programming
example
[:ROUTe] subsystem
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