Hioki Super megohm SM7110 - Basic Measurement

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If Measured Object Is to Be Charged Before Measurement (Pre-charge)
2.6 If Measured Object Is to Be Charged Before
Measurement (Pre-charge)
When objects such as capacitors with high electrostatic capacity are measured automatically, the
measurement time can be shortened if the measured object is charged prior to measurement (pre-
charge).
Set the pre-charge to [ON] (charges objects). (p. 64)
See “Measurement without use of a measurement xture” (p. 79).
Connect Model L2233 Clip Type Lead (Black), etc. to the CHARGE terminal. (See the gure below.)
CHARGE terminal
INPUT
GUARD
GROUND
CHARGE
OUTPUT
A
SM7110/SM7120
Measured
object
Measured
object to be
charged
Negative side Positive side
Rx
Rc
Shorting plug
Measurement
voltage
source
−
+
Ammeter
Current limiter
Negative
side
Positive
side
Rc is the measured object after measurement of Rx.
Example of connection (grounding an measured object)
When not using the CHARGE terminal, you can charge up the object Rx, which is connected
between the OUTPUT side and the INPUT terminal, by applying a measurement voltage for a
su󰀩cient period of time before starting a measurement.
2
Preparing for Measurement