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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:
E 0% - 100% - 0% 40-second smooth ramp,
(default)
P 0% - 100% - 0% 15-second smooth ramp
N 0% - 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.