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6.2
mA Sink (external loop power supply)
The ASC-400 calibrator can supply a variable test current into a mA loop to calibrate or
debug installed mA loops
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 “Ext. Pwr.” from the Power Source list.
3. Connect the loop, as shown in Figure 8.
Figure 8
Connections for mA loop
calibration/debug
LOOP
POWER
SUPPLY
-
+
UUT
30 VDC
MAX