8
12.
BACKLIGHT KEY
Press the *
key to turn the backlight on and press again to turn it off. This will reset after you power the clamp meter off.
13. HOLD
The HOLD function key can be used to freeze any reading being measured on any setting. After pressing the HOLD key, the
displayed value is locked and held until the HOLD key is pressed again or until the clamp meter is powered off.
14. INRUSH
While measuring AC, press the INRUSH key to measure the starting current of a circuit.
Prior to starting the test, the main and slave display will constantly display “----”. When the starting current is detected, the INRUSH
current will be measured and the slave display will constantly display the inrush measurement value during a 100ms integration
period. After that, the clamp meter will perform normal AC current measurements. The main display will show a current value and the
slave display will continue to show the inrush value. After the initial inrush detection it is able to enter the INRUSH mode again by
pressing INRUSH. To exit this feature, press of the INRUSH key again.
15. REL/ZERO
The relative value/zero clearing key has two functions for AC and DC measurements. For AC measurements excluding frequency and
DC measurements, the relative value measurement mode can be activated by pressing the REL/ZERO key. When the REL mode is
active, the main display will show Dn-Df, Df is displayed on slave display screen. Df (relative value) is the last measured value prior to
pressing the REL key, while Dn is the current measured value. After pressing the REL/ZERO key, this function is disabled.
16. AUTO SHUTDOWN
The AUTO shut down function will turn the power off, disabling the clamp meter after 15 minutes.
When powering the clamp meter on, hold the HOLD key for 10 seconds and release. Press the HOLD key once again and the AUTO
function will be disabled until the power is reset.
17. BUZZER
The BUZZER will sound when you press any of the function keys and it will also sound when the dial is turned. The BUZZER will also
sound when taking measurements for DIODE and Continuity. The BUZZER will beep three times in continuation 1min prior to auto
shutdown; prior to shutdown the BUZZER will alarm with a long beep.
VII. MAINTENANCE
1. GENERAL MAINTENANCE
It is required to disconnect the test leads before opening the clamp meter to replace the battery.
Clean the outside of the case with a non abrasive cloth or solvent.
2. INSTALLATION OR REPLACEMENT OF BATTERY (See Figure 12)
A standard 9V battery is required for replacement.
Please install or replace the battery as follows:
a. Shut down the clamp meter and remove the test leads.
b. With the clamp meter facing down, remove the screw from the battery compartment only. Take off
the battery cover.
c. Remove the old battery and replace it with a new standard 9V battery.
d. Replace the battery cover and tighten the screw.
WARNING
Figure 12
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