Technical data

86 U1401A User’s and Service Guide
5 Application Examples
Source Mode for mA Output
This instrument provides steady, stepped, and ramped
current output for testing 0 mA to 20 mA and 4 mA to
20 mA current loops.
The source mode can be used to supply current to a passive
circuit such as a current loop without loop supply.
1 Turn the rotary switch to the / position.
2 Plug the red and black banana plugs of the alligator leads
into the positive (+) and negative (–) output terminals
respectively.
3 Connect the red and black alligator clips to the current
loop. Make sure that the polarity is correct.
4 Press SHIFT to access the shifted operations of the keypad.
The annunciator will appear on the display.
5 Set the output level at +08.000 mA to get a 25% scale
readout for 4 mA to 20 mA.
6 Press OUTPUT to start the source output. The
annunciator will appear on the display.
You can use autoscan to test the loop with varying levels of
current output. Refer to Chapter 2, “Autoscan output,” on
page 31 for more information on the memory default values.