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Honeywell CNI2 - Technical Information; Sample Rate Explained; Example of Timed Sampling

Honeywell CNI2
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CNI2
O
perating and Installation
Guide
108
“SAMPLE RATE” EXPLAI
NED
The
CNI2
does not inspect t
he state of the inputs 100% of the time; otherwise it wouldn’t have
time to perform any other functions. Rather the
CNI2
briefly inspects (“
samples
”) the condition
of the lines one or more times each second. You can configure the
CNI2
to take as few as o
ne
sample per second or as many as 50 samples per second. The
12
lines
are divided into two
groups, each with its own sampling rate.
Lines
-
1, 2, 9, 10, 11 and 12 are one group. Lines
-
3
thru 8 are in the other group.
NOTE
Lines #3 thru #8 are only ava
ilable using an optional expansion board which is not available
at this time.
The sample rate is based on how quickly you expect the inputs to change. Faster sampling
rates are used for quickly
-
changing inputs but results in higher power consumption.
Too slow
of a sampling rate can lead to errors.
Example of Timed Sampling
TECHNICAL INFORMATIO
N

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