Fluke 787 FE 787 Users Manual - Page 28

Producing a Steady mA Output, Table 8. mA Output Adjust Pushbuttons, Pushbutton, Adjustment

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787 Users Manual Producing a Steady 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 adjust the current as shown in Table 8. 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 STEP pushbuttons described on the next page are available when the meter is producing a steady mA output. The STEP pushbuttons go to the next multiple of 25%. Table 8. mA Output Adjust Pushbuttons Pushbutton Z K COARSE X I FINE FINE F W COARSE C Y Adjustment Adjusts up 0.1 mA Adjusts up 0.001 mA Adjusts down 0.001 mA Adjusts down 0.1 mA 24

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787
Users Manual
24
Producing a Steady 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 adjust the current as shown in Table 8.
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 STEP pushbuttons described on the next
page are available when the meter is producing a
steady mA output. The STEP pushbuttons go to
the next multiple of 25%.
Table 8. mA Output Adjust Pushbuttons
Pushbutton
Adjustment
Z
K
COARSE
Adjusts up 0.1 mA
X
I
FINE
Adjusts up 0.001 mA
FINE
F
W
Adjusts down 0.001 mA
COARSE
C
Y
Adjusts down 0.1 mA