Fluke 787 - Manual (Page 27)

ProcessMeter™
Measuring Electrical Parameters
19
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 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.