Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 88
Counter
type readings may be optionally debounced for 3ms using the debounce
setting. The 3ms debouncing eliminates false counts from tipping buckets and
other devices with noisy switches.
Counter
type readings may also be limited by a
rollover
value. With
rollover
set
to 0, the counter will increase until it reaches 4,294,967,296 (2^32). With
rollover
set to a non-zero value, the counter will be reset to 0 when it exceeds
the
rollover
value. For example, if
rollover
is set to 9999, the counter will be set
to 0 on the next count.
Omega will allow the setup of multiple measurements on the same digital input.
For example, it is possible to setup both a tipping bucket rate and a tipping
bucket accumulation on the same input.
That being said, some setups that share digital inputs will yield unpredictable
results.
o
Setting up any number of tipping bucket and counters on DIn2 with
debouncing will work well.
o
Setting up a tipping bucket and counters without debouncing on DIn2 will
not work correctly as far as debouncing is concerned.
o
Setting up a level measurement will work in combination with any other
measurement.
o
Setting up multiple frequency and period measurements on the same
input will work as long as the measurements do not overlap.
o
For frequency and period readings on the same input, one measurement
must finish before a second one starts for the readings to be correct.
o
For frequency and period readings, omega will not hold up one
measurement until another completes.
o
Overlapped frequency and period measurements are not consider a
meaningful setup.
o
Setting up a frequency or period measurement on the same input as a
tipping bucket or counter will not work correctly.
If you want to measure both frequency and count from an input you will
need to either jumper it to both digital inputs and setup one measurement
for the counter (e.g. counter 1) and the other for a frequency (e.g. frequency
2) or set up the measurements as explained in Section
8.10
.8.10
7.1.4.22.
Meta
Meta
measurements use the result of another measurement as their basis.
Usually, a
Meta
measurement is used to average results of another
measurement.
