Ametek Jofra ASC-400, Reference Manual, Page: 29 / 69

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6.0 Using Source modes (Lower Display)
The ASC-400 calibrator can generate calibrated signals for testing and calibrating process
instruments. The calibrator can source voltages, currents, resistances, frequencies,
pulses, and the electrical output of RTD and thermocouple temperature sensors.
6.1 Sourcing mA (internal loop power supply)
To source a current, follow the principle of navigating through the functions described in
the guidelines in section 4.2 and proceed as follows
:
1. Select “Current” from the Lower Mode list.
2. Select “Int. Pwr.” from the Power Source list.
3. Select “Out” from the Test Mode list.
4. Connect leads to the mA terminals, as shown in Figure 7.
5. Enter the desired current using either the ARROW keys or the numeric keys.
UUT 900 ohms max. (650 ohms with HART resistor turned on)
Figure 7
Connections for Sourcing
Current
-
+
UUT