Analog Signal Input
Verbatim Owner's Manual B-3
2 for a Raco Temperature Sensor input (sensor model TS705A),
used to measure temperatures from -20 to +120 degrees F.
3 for additional types of special custom-specified signals.
Summary of Codes for Input Signal Type
0 (default) 4-20 ma current loop
1 0-1 volt DC
2 Raco temperature sensor
3 Other special inputs
B.1.4 Programming the Scaling and Offset Factors
This set of steps is not necessary for inputs using a Raco Temperature Sensor,
since these values will be automatically inserted if the parameter 2 is selected in
the above step.
In the above step, accepting the default parameter of 0 for 4-20 milliamp inputs
automatically provides for a spoken reading of 0.0 percent for the minimum (4
ma) signal input value, and 100.0 percent for the maximum (20 ma) signal, until
you enter different factors.
In most cases, you will want to program the unit to give spoken reports in terms
of the actual physical variables being monitored, such as water level in feet, etc.
In general, you will need to determine the desired spoken numerical values
corresponding to two widely separated (low end and high end) signal input
values. Often this will be available from the overall system specifications. In
other cases, this will be determined (or revised) based on actual on-the-spot
observations. The Verbatim Autodialer offers the unique option of entering this
scaling information based either on your particular system specifications (the
System Specification method) or else on your real world observations (the Real
World Method). Also, scaling information which you may have originally
entered based on your system specifications may later be easily “fine tuned”
based on real world observation.
In addition, you may wish to record your own identifying message to replace
the default message, as described in the message recording section of the
manual.
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