Fluke 787 user manual Producing a Steady mA Output, MA Output Adjust Pushbuttons, Adjustment

787

Users Manual

Producing a Steady mA Output

Table 8. mA Output Adjust Pushbuttons

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.

Pushbutton

Z

K

COARSE

X

I

FINE

Adjustment

Adjusts up 0.1 mA

Adjusts up 0.001 mA

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%.

FINE

F

W

COARSE

C

Y

Adjusts down 0.001 mA

Adjusts down 0.1 mA

24