Auto Ramping The Ma Output - Fluke ProcessMeter 787 User Manual

787
Users Manual
Table 10. mA Step Values
Step Value (for each span setting)
4 to 20 mA
0% 4.000 mA
25% 8.000 mA
50% 12.000 mA
75% 16.000 mA
100% 20.000 mA
125% 24.000 mA
120%

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.
26
When the rotary switch is in the OUTPUT mA
repeating 0% - 100% - 0% ramp in your choice of three
ramp waveforms:
0 to 20 mA
E
0.000 mA
5.000 mA
P
10.000 mA N
15.000 mA
20.000 mA
The ramp times are not adjustable. Press the BLUE
pushbutton to cycle through the three waveforms.
24.000 mA
position, the meter produces a continuously
0% - 100% - 0% 40-second smooth ramp,
(default)
0% - 100% - 0% 15-second smooth ramp
0% - 100% - 0% Stair-step ramp in 25% steps,
pausing 5 seconds at each step. Steps are
listed in Table 10.
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.