7-18 Scanning Model 2750 Multimeter/Switch System User’s Manual
NOTE Pressing the AUTO key sets the manual delay to 0.001 sec.
4. With the desired manual delay displayed, press ENTER.
For remote programming, the TRIGer:DELay <NRf> and TRIGger:DELay:AUTO <b>
commands are used to set the delay. See Table 7-1 for details.
NOTE The delay for ratio and channel average can only be set using remote program-
ming (Table 5-3).
Monitor channel
While in the normal measurement state, a scan list channel can be used to monitor read-
ings. When a channel is selected to be the monitor, it will assume the setup of the scan list
channel.
NOTE If you change the setup while a monitor channel is closed, that setup will be cop-
ied to that channel in the scan list.
When a scan is started, the first channel in the scan list will be briefly displayed. While the
scan is in progress, the display will only show the reading(s) for the monitor channel.
After the last channel is scanned, the scan will disable with the monitor channel closed.
Monitor can be used with limit testing to trigger the start of a scan. When the monitor
detects that a set reading limit has been reached, the scan is triggered to start. The detailed
procedure to perform a monitor scan is provided in “(see Scan operation) — Monitor
scan,” page 7-35.
NOTE An overflow reading (“OVRFLW” message displayed) is interpreted by the
Model 2750 as a positive reading, even if the input signal is negative. This could
inadvertently trigger a monitor scan (see “(see Scan operation) — Monitor
scan,” page 7-35.
The monitor channel must be a channel that is in the scan list. If the monitor
channel is removed from the scan list, the lowest channel in the scan list will
become the monitor channel.
To set monitor, the instrument can be in the normal measurement state or enabled while in
the advanced scan menu. There are two methods to select a monitor channel: method 1
selects it while a channel is closed, and method 2 selects it with no channels closed.
NOTE The monitor channel must be a channel that is in the scan list.
2750-900-01.book Page 18 Wednesday, August 3, 2011 7:56 AM
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