Fluke 35040 manual 6Timer Setup, The Test Function Screen Showing the Timer Settings

Operation

Operation Instructions 3

3.9.6Timer Setup

The Test Function screen provides for configuring the timer interval, count mode, and decimal places (see Figure 3-17).

With the timer settings displayed, press the TEST FUNCTION button. The "f" cursor will appear to the left of the timer interval setting. Use the UP and DOWN arrow buttons to select a value from the user customizable list. Refer to Section 3-10 for details on programming the timer intervals.

ADC	ALC
Interval:	60 s
Count: UP	0
Decimal Places:

Figure 3-17. The Test Function Screen Showing the Timer Settings

Press the TEST FUNCTION button to advance the "f" cursor to the timer count mode field. Use the UP and DOWN arrow buttons to toggle the setting between up (UP) and down (DOWN). For the up count mode, the timer starts at zero (0) seconds and increments up to the timer interval setting. The down count mode displays time starting from the timer interval setting and decrements to zero (0) seconds.

Press the TEST FUNCTION button to advance the "f" cursor to the timer decimal places setting. Use the UP and DOWN arrow buttons to toggle the setting between zero (0) and one (1). Zero decimal places displays time in whole seconds, while one decimal place displays time to a tenths of a second.

NOTE

Presently, the timer counts only in whole seconds.

3.9.7 Setting Thresholds

The automatic exposure detection start and stop threshold currents can be set from the front panel. When the thresholds screen is displayed (Figure 3-10), press the TEST FUNCTION button. The “f” cursor will appear to the left of the start threshold. Use the UP and DOWN arrow buttons to change the setting. Press the TEST FUNCTION button to move the “f” cursor to the stop threshold setting. Use the UP and DOWN arrow buttons to change the setting. Press the TEST FUNCTION button a third time to return to viewing the rest of the test screens. It is recommended that the start threshold be set to 1.3 pA and the stop threshold be set to 1.2 pA. Depending on the system leakage, other settings may be necessary. See Section 2.3.1 for more details.

NOTE

Changing the thresholds automatically zeroes all measurements.

NOTE

Setting the thresholds to 0.0 pA disables the

automatic exposure detection. This setting prevents the measurement of leakage current. “Leakage NA pA” on the display indicates the leakage measurement is not available.

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