Fluke 787 - Manual (Page 34)

787
Users Manual
26
Manually Stepping the mA Output
When the rotary switch is in the OUTPUT [ mA position,
and the OUTPUT jacks are connected to an appropriate
load, the Meter produces a steady mA dc output. The
Meter begins sourcing or simulating 0 %. Use the
pushbuttons to step the current up and down in 25 %
steps as shown in Table 9. See Table 10 for mA values at
each 25 % step.
Select either sourcing or simulating by choosing the
SOURCE or SIMULATE output jacks.
If the Meter cannot deliver the programmed current
because the load resistance is too high or the loop supply
voltage is too low, dashes (-----) appear on the numeric
display. When the impedance between the SOURCE jacks
is low enough, the Meter will resume sourcing.
Note
The COARSE and FINE adjustment pushbuttons
described on the previous page are available
when you are manually stepping the mA output.
Table 9. mA Stepping Pushbuttons
Pushbutton Adjustment
X
M
% STEP
Adjusts up to the next higher
25 % step
% STEP
T
W
Adjusts down to the next lower
25 % step