User manual

to yield a single filtered reading. If the moving filter is active, or filter is disabled, then only
one reading conversion is performed.
If the hold feature is enabled (see :HOLD commands in Section 5), then the first pro-
cessed reading becomes the "seed" reading and operation loops back to the beginning of
the device action. After the next reading is processed, it is compared to the programmed
hold window (0.01% to 20%). If the reading is within the window, then operation again loops
back to the beginning of the device action. This looping action continues until the specified
number (2 to 100) of valid hold readings (readings within the window) have occurred. If one
of the hold readings is not within the window, then the instrument acquires a new "seed"
reading and repeats the hold process. After the hold is released, an audible beep is sounded
to signal a valid measurement. The use of Hold is explained in Section 3.
If the instrument is performing a step or scan, then the next task for device action is to
open the previous channel (if closed) and close the next channel.
If the filter, hold feature and scanning are disabled, the device action would simply be a
single reading conversion.
From Delay block of
Trigger Model (See Figure 4-11)
Device Action
To Output Trigger block of
Trigger Model (See Figure 4-11).
Conv Hold Chan
Filtering Process
(Filter enabled)
Conv = Reading conversion
Hold = Hold Feature process (if enabled)
Chan = Close channel (if scanning)
Conv Conv
Figure 4-12
Device action
(trigger model)
Figure 4-12
Device action
(trigger model)
2000-900 (J - Aug 2010) BOOK.fm Page 31 Wednesday, October 12, 2011 12:29 PM