i410/i1010
AC/DC Current Clamp
6
Calibration and Adjustment
Always complete the Performance Test prior to Calibration. If Performance Test results are satisfactory,
calibration is not necessary. Otherwise, to ensure that the Current Clamp performs to specification, cali-
brate the Battery Indicator, DC Zero, and DC Amps and check the AC Amps function on a yearly basis.
When it is needed, be sure to complete the full calibration procedure (Battery Indicator, DC Zero, DC
Amps Calibration and AC Amps Check.) Partial completion of this procedure will not ensure that the
Current Clamp performs to specification.
Adjustment points are shown in Figure 2.
600V
i1010
AC/DC CURRENT CLAMP
OUTPUT 1mV/A
CAT III
CAT
III
A
ZERO
600V
600A
1000A
~
Power On Indicator
Power On/Off Button
ZERO Knob
VR4
VR5
VR1
VR6
VR3
Decal
el004f.eps
Figure 2. Calibration Adjustment Points
Calibrating the Battery Indicator
Use the following procedure to calibrate the low battery indicator:
1.
Set the DC voltage generator to 9.0V dc.
2.
On the Current Clamp, disconnect the battery from the battery clip.
3.
Connect the DC voltage generator to the battery snap.
4.
Connect the Current Clamp output cable to a DMM. Check that the DMM reads 9.0V dc.
5.
On the Current Clamp, press the green power button on and check that the LED is on.
6.
Set the DC voltage generator to 7.0V dc. (The LED may be on or off at this point.)
7.
Adjust VR4 on the Current Clamp to the point where the LED cycles from on to off.
