Fluke FLK-8845A/SU [51/93] Testing using limits

Front-Panel Operation

Using the Analyze Functions 3

3-11

2. Press ENTER to set the number of samples.

Note

Setting the number of samples to zero will cause the Meter to collect

samples continuously.

Testing Using Limits

The limits function provides Pass/Fail testing to user specified upper and lower limits.

The upper and lower limits are stored in volatile memory and will be set to zero when the

Meter is first turned on or the meter receives a reset through the remote interface.

Changing the function will also set the limits to zero.

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V+

HIGH LOW

F1 F2 F3 F4 F5

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When testing from the front panel, the Meter displays OK in the secondary display when

the measurement is between the high and low limit. It displays HIGH or LOW, as show

above, for each measurement that exceeds the upper or lower limit. The beeper will beep

once for the first measurement outside the limits after an OK measurement.

For remote operation, the Meter can be set to generate a service request (SRQ) on the

first occurrence of a measurement outside the limits. See the Programmers Manual for

information on enabling SRQ for this test.

To set the high and low limits through the front panel:

1. Press J.

2. Press the MATH soft key

3. Press the LIMITS soft key.

4. Press the HIGH or LOW soft key as shown above to set the high or low limit

respectively.

To select the digit to adjust, press either <-- or -->.

With the desired digit selected, press the soft key labeled -- to decrement the digit

or ++ to increment the character. The right most character is the multiplier. This

character can be set to p, n, µ, m, k, M, or G.

5. Press ENTER to set the selected limit.

6. Press ENABLE to start the limits testing.

Note

Since the high and low limits are independent of each other, both hign and

low limit conditions could be satisfied by a measurement. In this case, the

Meter gives priority to the low limit conidition by displaying LOW and

setting the low bit of the questionable data event register.

Refer to the Programmers Manual for instructions on setting the limits remotely.