Campbell Scientific DSP4 Heads Up Display - Manual (Page 10)

DSP4 HEADS UP DISPLAY
6
3.10 DSP4 RESET AND MEMORY BACKUP
3.10.1 BACKUP FROM OPERATING
DATALOGGER
The DSP4 retains its datalogger program and
associated labels even if the DSP4 power is
removed as long as the DSP4 is connected to
an operating datalogger. The backup power for
the DSP4 memory is supplied by the operating
datalogger through the 5 volt line of the 9 pin
connector. If the DSP4 power is off and the
DSP4 is not connected to an operating
datalogger, the datalogger program and labels
are lost. The DSP4 is totally reset on power-up
only if the datalogger is either not connected or
off.
3.10.2 DATA STATUS DURING PRIMARY
POWER LOSS
If the DSP4 is in the RUN mode at the time of
power loss, it returns to the RUN mode when
the DSP4 power is restored, provided it has not
been disconnected from the operating
datalogger. Printer output is aborted at power
loss.