Fluke 8842a Operating Features, Power-Up Features, Front and Rear Panel Features

8842A

Instruction Manual

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Figure 2-4. Installing the Single Rack Mount Kit

2-7. OPERATING FEATURES

2-8. Power-Up Features

When the 8842A is turned on, all display segments light up for about 2 seconds while the instrument performs an internal self-test of its digital circuitry. The 8842A then assumes the following configuration:

∙VDC function

∙Autorange, starting in the 1000V range

∙Slow reading rate

∙Continuous, internal trigger

∙OFFSET off

∙Local (front panel) control

While all display segments are lit during the power-up self-test, you can freeze the display by pressing the SRQ button. All display segments will then remain lit until you press any button.

2-9. Front and Rear Panel Features

Front panel features are explained in Figure 2-5. Rear panel features are explained in Figure 2-6.

The alternate functions embossed below the front panel range buttons and the special feature buttons are enabled by the CAL ENABLE switch. These functions are for use only when calibrating the instrument. See the Maintenance section for further explanation.

CAUTION

To avoid accidentally uncalibrating the 8842A, do not press the CAL ENABLE switch unless calibrating the instrument. Never cycle power on or off while the CAL ENABLE switch is on.

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