Once you have the HI 1756WS or the HI 1756-2WS set up and calibrated you need to do a Write Non-Volatile command for each channel to save these settings. If a power cycle is done before writing to non-volatile memory, the module will return to its old settings. If a power cycle occurs after your Write to Non-Volatile memory your calibration will be retained.
This will also apply to the HI 1756-FC and HI 1756-xDF modules.
If your memory is corrupted you may lose your calibration data. See additional answers for instructions on how to reset your memory back to factory default settings.
