MKS 670B - Troubleshooting Common Problems; Troubleshooting: Noisy Pressure Reading; Troubleshooting: Erratic Trip Point Relays

Cha
p
ter Seven: IEEE-488 Communications O
p
tion MKS Device De
p
endent Messa
g
es
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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