Fluke 787 Auto Ramping the mA Output, MA Step Values Value for each span setting To 20 mA

787

Users Manual

	Table 10. mA Step Values
Step	Value (for each span setting)
	4 to 20 mA	0 to 20 mA
0%	4.000 mA	0.000 mA
25%	8.000 mA	5.000 mA
50%	12.000 mA	10.000 mA
75%	16.000 mA	15.000 mA
100%	20.000 mA	20.000 mA
125%	24.000 mA
120%		24.000 mA

Auto Ramping the mA Output

Auto ramping gives you the ability to continuously apply a varying current stimulus from the meter to a transmitter, while your hands remain free to test the response of the transmitter. Select either sourcing or simulating by choosing the SOURCE or SIMULATE jacks.

When the rotary switch is in the OUTPUT mA Jposition, the meter produces a continuously repeating 0% - 100% - 0% ramp in your choice of three ramp waveforms:

E0% - 100% - 0% 40-second smooth ramp, (default)

P0% - 100% - 0% 15-second smooth ramp

N0% - 100% - 0% Stair-step ramp in 25% steps, pausing 5 seconds at each step. Steps are listed in Table 10.

The ramp times are not adjustable. Press the BLUE pushbutton to cycle through the three waveforms.

Note

At any time during auto ramping, you can freeze the ramp simply by moving the rotary switch to the [mA position. Then you can use the COARSE, FINE, and % STEP adjust pushbuttons to make adjustments.

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