Fluke Welder 787 User Manual download pdf (Page 22)

787

Users Manual

Testing Diodes

To test a single diode:

1. Insert the red test lead into the Vjack and

black test lead into the COM jack.

2. Set the rotary switch to O.

3. Press the BLUE pushbutton so that the D

symbol is on the display.

4. Touch the red probe to the anode and the black

probe to the cathode (side with band or bands). The

meter should indicate the appropriate diode voltage

drop.

5. Reverse the probes. The meter should display OL,

indicating a high impedance.

6. The diode is good if it passes the tests in steps 4

and 5.

Displaying Minimum, Maximum, and Average

MIN MAX recording stores the lowest and highest

measurements, and maintains the average of all

measurements.

Press M to turn on MIN MAX recording. Readings

are stored until you turn the meter off, switch to another

measurement or source function, or turn MIN MAX off.

The beeper sounds when a new maximum or minimum is

recorded. Auto power-off is disabled and auto ranging is

turned off during MIN MAX recording.

Press M again to cycle through the MAX, MIN, and

AVG displays. Press and hold M for 1 second to

erase stored measurements and exit .

If MIN MAX recording is on continuously for over 40

hours, minimum and maximum readings are still

recorded, but the displayed average no longer changes.

In MIN MAX recording, press I to suspend

recording; press I again to resume recording.

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Fluke Welder 787 User Manual Page 22