Self-Calibration
Over long periods of time or when moving between environments with very different temperature
ranges self-calibration can increase the accuracy of your device. The encoder contains a built-in
voltage reference that possesses good temperature stability and can be used to recalibrate the
unit. Each channel’s gain and offset will be checked and set to be within the specifications listed
at the back of this manual.
To Perform A Self-Calibration:
Ensure that the encoder’s DIP switches are set to ProComp Infiniti Mode.
ProComp Infiniti
Ensure that the encoder’s temperature is stable, and is close to the temperature at which
you plan to use it. Since certain parameters exhibit temperature drift, self-calibrating the
encoder at or near the temperature at which it is used can cancel out any drift that has
occurred from another temperature.
For best results, replace the batteries if the encoder is showing a low battery warning.
Unplug all sensors from the encoder, as well as any Compact Flash module.
Press and hold the power switch for 10 seconds, or until the blue LED blinks quickly in a
sequence of 3 flashes. Release the power switch as soon as you see the three flashes.
Self-calibration will then be initiated. If you continue to hold the button too long, it will
not occur.
The self-calibration will continue for about 20-30 seconds, at which point the blue LED
will stop flashing and light up steadily as before.
If the blue LED flashes quickly for about 1 second before lighting up steadily, this
indicates that the self-calibration failed. If this happens repeatedly when you try to self-
calibrate the encoder, return it to the manufacturer for service.
Notes About Self-Calibration
Self-calibration requires that all sensors are unplugged from the encoder. Near the
start of the self-calibration procedure, the unit will check for plugged-in sensors and
abort the operation if they are detected. However, be sure not to plug any sensor into
the unit after starting self-calibration. Doing so could result in calibration failure or in
poor calibration on the affected channel.
Keep the encoder several feet from active electronic devices such as computers and
monitors, and avoid operating wireless devices near the encoder, while it is performing
a self-calibration.
By depressing and briefly holding the power switch during the calibration, but before it
finishes, you can abort the operation. In this case, the new calibration settings will not
take effect.
A successful Self-Calibration exercises most of the signal path of each channel, and
gives a high probability that the signal paths are working properly and are properly
recalibrated. However it does not exercise the entire signal path under realistic
conditions, and of course it does not calibrate the sensors. If a higher degree of
assurance is required that the unit is operating as per its original specifications, you
may return it and/or the sensors to the manufacturer for a factory recalibration.
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