Chapter Seven: IEEE-488 Communications Option
MKS Device Dependent Messages
115
Channel-Specific Messages
The Channel-Specific messages define the operation of a single channel on the 670 instrument.
Channel 1 is always accessible. When the 670 instrument is connected to a 274 multiplexer,
Channels 2 and 3 are accessible and should be configured. The queries cause the 670 instrument
to report on the status of a particular entry.
In all the Channel-Specific messages, the channel number is shown as chan # . Enter the channel
number as:
1 for Channel 1
2 for Channel 2
3 for Channel 3
Channel-Specific Messages
Function
Message
Display and Remote
Reading Resolution
Command
Shortcut command
Query
Shortcut query
:sense:scan(@chan #):digit display resolution
:sens:scan(@chan #):digi display resolution
:sense:scan(@chan #):digit?
:sens:scan(@chan #):digi?
where chan # equals 1, 2, or 3
where display resolution equals:
3.5 for 3.5 digit display and reading response
4.5 for 4.5 digit display and reading response
5.5 for 5.5 digit display and reading response
Response Time
Command
Shortcut command
Query
Shortcut query
:sense:scan(@chan #):filter response time
:sens:scan(@chan #):filt response time
:sense:scan(@chan #):filter?
:sens:scan(@chan #):filt?
where chan # equals 1, 2, or 3
where response time equals:
1MS for 1 millisecond
40MS for 40 millisecond
400MS for 400 millisecond
Table 33: IEEE-488 Channel-Specific Messages
(Continued on next page)
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