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4.1-1 Manually stepping the current output
To use the 25 % function with mA output, follow these steps:
1. Select the lower display from the Main Menu, and choose mA. 
2. Use the 25% key to cycle between 4 mA and 20 mA in 25 % intervals.
4.2 Using Auto Output Functions
The Auto Output functions, when selected replace the scrolling functions on
the Source Home Menu. There are two Auto Output functions; [STEP] and
[RAMP]. When the [STEP] function is selected the calibrator steps from the
0% set source value to the 100% set source value in 25% increments. The
word [STEP] turns to [STEPPING] when the [STEP] function is active. The
[RAMP] function ramps the calibrator output from the 0% to 100% set
source values. When the [RAMP] function is active the word [RAMP] turns to
[RAMPING]. Both the [STEP] and [RAMP] functions will continue from 0% to
100% and back again until a key is pressed.
Note: Auto Output options are not available for the Pulse Output function.
4.3 Sourcing mA 
To source a current, follow these steps:
1. From the Main Menu select lower display [LOWER]. Choose [mA] from
the primary parameters.
2. Switch to input/output control, and select output [OUT].
3. Connect the leads to the mA terminals, as shown in Figure 10.
4. Enter the desired current using the keypad.
Figure 10. Connections for Sourcing Current
4.4 Simulating a Transmitter
To have the calibrator supply a variable test current to a loop in place of a
transmitter, follow these steps:
1. Select lower display from the Main Menu.