Model 2700 Multimeter/Switch System User’s Manual Triggering 8-5
If MANual is chosen, also enter the duration of the delay in the hour/minute/second
format using the ,
, Δ, and ∇ keys. The maximum is 99H:99M:99.999S:. Note that
pressing the AUTO key sets the delay to 0.001 sec. Press ENTER to accept the delay or
EXIT for no change.
Device action
The primary device action is a measurement. However, the device action block could
include the following additional actions (
Figure 8-2):
Figure 8-2
Device action
• Filtering — If the repeating filter is enabled, the instrument samples the specified
number of reading conversions to yield single, filtered reading. Only one reading
conversion is performed if the filter is disabled, or after the specified number of
reading conversions for a moving average filter is reached. After a reading (Rdg) is
procured, operation proceeds to Hold.
• Hold — The Hold feature is used to screen out reading anomalies. When enabled,
the user selects a window and count for Hold. In general, when a reading is outside
the window it is rejected, operation loops back to the beginning of the Device
Action as shown in
Figure 8-2. The hold count specifies how many readings have
to be within the window before it is accepted. See “Reading hold (autosettle),”
page 8-6, for operation details. After a Hold Reading is acquired, operation
proceeds to Channel Closure.
• Channel Closure — When scanning, the last device action is channel control.
Using the hold feature provides an auto settling time for switching relays. Each
open/close transition will restart the hold process and a reading for each channel
will not occur until the relay settles.
Rdg Hold Chan
Filter
DEVICE ACTION
To Output Trigger
Block of Figure 8-1
From Delay Block
of Figure 8-1
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