Jamar RAC Geo II, User Manual

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RAC Geo II User’s Manual
A-4
Glossary
Refer to the page number listed after each entry for more information.
Add
— black button used to count up or add value to the screen on the
RAC. Page 3-6.
Dim
— blue button on the RAC, it is used to change the brightness of the
display. Page 3-6.
calibration course — known distance used when calibrating the RAC.
One thousand feet is ideal, but it should not be less than 500 feet. Page 4-6.
calibration number
— a number, unique to each vehicle, that represents
the pulses from the transmission received over a set distance. This number
should be as near to 0.500 - 1.200 as possible, and is necessary for the RAC
to count when using an external sensor. Page 4-6.
CLR (Clear)
— red button on the RAC that resets the distance or time to
zero. Page 3-6.
CH (Count Hold) — red button on the RAC which stops the computation
of distance pulses. Page 3-4.
DH (Display Hold)
— red button on the RAC which stops the display, but
allows the RAC to continue accumulating distance internally. Page 3-4.
DMI
— generic industry term meaning Distance Measuring Instrument.
The RAC Geo II is a DMI.
DPO (Distance Pulse Output) — menu function on the RAC, when acti-
vated it will provide a +5VDC (TTL level) output pulse at a pre-selected
distance interval and signal duration. Page 3-9.
ENT (Enter)
— green button on the RAC, it accepts any number keyed
into the display. Page 3-6.
Erase — menu function of the RAC, it is used to clear all memory locations
in the RAC. Page 3-16.
LED
— stands for light emitting diode, the display used with the JAMAR
RAC Geo. Page A-3.