Thermo Scientific personalDATARAM pDR-1000AN Instruction Manual page 56

NOTE: After the preceding resetting sequence, the instrument should be
zeroed; otherwise its optical background will remain unsubtracted.
Resetting/Electronic Checking Mode
EXIT + ENTER
+
ON/OFF
PDR SELF-TEST...
TESTING ALARM
PDR SELF-TEST...
TESTING SERIAL
PDR SELF-TEST...
TESTING CLOCK
PDR SELF-TEST...
TESTING A/D
PDR SELF-TEST...
TESTING D/A
PDR SELF-TEST...
TESTING MEMORY
PDR SELF-TEST...
TESTING COMPLETE
(automatic power off)
45
Automatic
Sequence
(30 – 40 sec.)