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FUNCTION REFERENCE

Key sequence:

ON

RECALL

Key to switch a channel ON or OFF.

TRACK

Control to select a register or a trace to be recalled from memory.

DISPLAY on off

Toggle softkey to turn the display of the selected trace or register ON or OFF.

trace

register

Toggle softkey to deselect traces or deselect registers.

ST6557

9303

CONFIDENCE CHECK

Description:

After turning the oscilloscope on, a confidence check starts automatically. The following is tested in sequence:

-The instrument’s internal control bus.

-The communication between front panel and internal microprocessor.

-The settings in the memory (with backup batteries installed only).

-Interface to digitizer circuitry.

The selftest takes less than a second. A message appears on the screen when errors are found.

The settings stored in memory become active with backup batteries installed. These are the same settings present when the instrument was last switched off. With no batteries present, the standard default setting ’std’ is activated. Refer to STANDARD SETUPS for details.

Key sequence:

POWER ON OFF

Toggle key to switch the oscilloscope on/off. Starts confidence check

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Image 138
Fluke PM3370B user manual Confidence Check, Power on OFF