Initializing And Erasing Nonvolatile Ram - Tektronix 11801C User Manual

Initialization
Initializing and
Erasing Nonvolatile
RAM
3 112
You can erase all information stored in nonvolatile RAM by holding down
both the WAVEFORM and TRIGGER major menu buttons when you turn on
the 11801C. Release the buttons when the lights next to the major menu
buttons stop flickering. When the power on sequence is complete, the
message Teksecure Erase Memory Status: Erased, Instrument ID, on time,
and number of power ups retained" will appear on the display.
When nonvolatile RAM is erased in this manner, the 11801C writes the
hexadecimal value DEAD over all nonvolatile RAM locations for settings,
traces, and saved trace descriptions.
The following information is not lost when nonvolatile RAM is erased:
H Serial number of the 11801C
H Accumulated time the 11801C has been on
H Number of times the 11801C has been powered on
H Factory calibration constants, which are established at the factory and
cannot be changed by the user or by the 11801C
H Enhanced Accuracy calibration constants, which are periodically calcu
lated and updated
H Time and Date
Reference