Fluke 753 Fluke 750 Series User Manual - Page 74

Ramp the Output, Start Step, Short

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753/754 Users Manual 7. The display tells you to select values for these parameters: • Start point (in units or % of scale) • End point • Number of steps • Time per step • Repeat mode, single shot or continuous repetition • Step style, Sawtooth or Triangle pattern • Start delay Push the Start Step softkey to automatically start the step function. The softkey label changes to Stop Step. 8. To Push the Stop Step softkey to stop the automatic step function. 9. Push the Done softkey to continue normal operation. Ramp the Output When ramped, the source sweeps up or down in value. Use the ramp feature to check a switch or alarm, or when a smooth increase or decrease of the output function is necessary. The Product can be set to ramp up or down in engineering units (mV, V, mA, °C, etc.) or % of scale. While the signal ramps, the output is adjusted 4 times per second. The size of the steps is bound by the selection of endpoints and ramp time. For example, if you set the Product to ramp from 1 mV to 1 V over 10 seconds, the output is adjusted in approximately 25 mV steps. The Ramp function continues until you get the selected limit, or until an optional trip condition is met. The optional trip detect works as follows: during ramping, the Product checks for either a 1 V change in dc voltage or a change in continuity status (Open or Short) from one ¼ second interval to the subsequent interval. 62

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753/754
Users Manual
62
7.
The display tells you to select values for these
parameters:
•
Start point (in units or % of scale)
•
End point
•
Number of steps
•
Time per step
•
Repeat mode, single shot or continuous
repetition
•
Step style, Sawtooth or Triangle pattern
•
Start delay
Push the
Start Step
softkey to automatically start the
step function. The softkey label changes to
Stop
Step
.
8.
To Push the
Stop Step
softkey to stop the automatic
step function.
9.
Push the
Done
softkey to continue normal operation.
Ramp the Output
When ramped, the source sweeps up or down in value.
Use the ramp feature to check a switch or alarm, or when
a smooth increase or decrease of the output function is
necessary. The Product can be set to ramp up or down in
engineering units (mV, V, mA, °C, etc.) or % of scale.
While the signal ramps, the output is adjusted 4 times per
second. The size of the steps is bound by the selection of
endpoints and ramp time. For example, if you set the
Product to ramp from 1 mV to 1 V over 10 seconds, the
output is adjusted in approximately 25 mV steps.
The Ramp function continues until you get the selected
limit, or until an optional trip condition is met. The optional
trip detect works as follows: during ramping, the Product
checks for either a 1 V change in dc voltage or a change
in continuity status (
Open
or
Short
) from one ¼ second
interval to the subsequent interval.