Turning On The Instrument; Auto Standby; Dc Zero Adjustment - AEMC MR417 User Manual

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2.3 Turning ON the Instrument

Turn on the clamp by pushing the slide switch to the 1mV/A or 10mV/A setting:
MR417

1mV/A corresponds to the 600A range
10mV/A corresponds to the 60A range
MR527

1mV/A corresponds to the 1400A range
10mV/A corresponds to the 150A range)
The green ON indicator should light up:
If indicator blinks, less than 4 hours of battery life remains

If indicator fails to light, replace the battery (see § 4.2)


2.4 Auto Standby

After 10 minutes of operation without user action (such as pressing the DC Zero
button), the clamp automatically enters Standby mode. In this mode, the ON
indicator goes OFF.
To reactivate the clamp, press DC Zero button or change the switch to any setting
other than OFF.
To disable automatic Standby, press and hold down DC Zero when turning the
instrument ON. The ON indicator blinks to indicate that the request has been
applied; and then glows steady yellow when you release the DC Zero button.

2.5 DC Zero Adjustment

DC Zero must be adjusted before each measurement.
1. Remove the clamp from the circuit under measurement.
2. Turn the clamp ON.
3. Connect the clamp to the measuring instrument. The phase is on the red
lead.
Press the DC Zero button.
4.
The OL indicator lights for approximately three seconds to indicate that
5.
the zero adjustment is in progress.
6. If the zero has been correctly adjusted, the OL indicator goes OFF.
If it remains ON, the zero cannot be adjusted.
clamp is not on a conductor and that its jaws are correctly closed. Then
press DC Zero again.
Alternately, turn the clamp OFF and then back ON. The previous zero
adjustment will remain in
Current Probe Models MR417/MR527
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In this case, ensure the
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