Omega Speaker Systems Rercorder RD8300 - Manual (Page 55)

Section 5 – Recorder Setup
Page 46
09/11/2008 REV 0.99
Figure 5-12 Frequency Setup
Reset Intrvl: This is the Reset Interval. This is the time in days, hours, minutes and seconds between
total resets when Auto Reset is checked. The example above will reset the Total every 5 minutes.
Reset Sync: If the Sync Enabled checkbox is checked the
Total will reset the first time it reaches the set time. This
allows the user to synchronize the reset to a known time. This also allows several channels to be
synchronized together if the Reset Sync time is set to the same for all. This time is ignored if the enable
box is not checked.
Reset Print: When this box is checked each time the total is reset, the information will be
appended to the alarm/event log (time and total).
Flow Rate /: The Flow Rate will be displayed per second, minute, hour or day
depending what is selected in this drop down menu.
Cut Off Level: This is the low flow cut off. If the input value of the base point is
less than or equal to this value, it will not be totaled. Thus here if the input falls
below 15 liters/minute the flow total will not update.
Base Point: This is the actual source for the totalization. The channel selected
from the drop down menu should be set up for the correct input and in the correct
units.
Total Reset on Alarm – If checked the Total will be reset by the Alarm
condition selected. In this case when Channel 1 Alarm 1 is active, the
Total will be reset.
5.1.3.9 Frequency/Pulse Count
Channels 1, 6, 7 and 12 can be used to measure
frequency. Frequency is applied to a separate
isolated input. Inputs are TTL compatible and can
take signals up to 12 volts. There are two options for
frequency that can be selected: Frequency
– which
measure actual frequency in Hz and may be scaled
accordingly. Pulse Count
– which counts pulse
transitions on the inputs and may be scaled
accordingly. In addition alarm and reset features can
be applied.
5.1.3.9.1 Frequency
Select Frequency from the setup menu. The Input
High and Low and Output High and Low can be
used to scale the frequency. For example: to have
the readings be in revolutions per minute (RPM) set
the input to 0 and 1000 for low and high respectively
and the output to 0 and 60000.
Neg. Edge Trigger: Checking this box will cause
frequency to be measured on the Negative Edge of
the input waveform as opposed to the default
positive edge.
Filter: The filter is applied to the inputs when the
Enable check box is checked. The filter performs a
running average of n samples, where n is the
numeric value set in the AVG box from 1 to 100.
Figure 5-11 Frequency Select