Quick Start Guide

15
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Measurement Method
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Measurement of instantaneous power interruption in a
commercial power line
DANGER
To prevent electric shock and equipment damage, make sure
each unit's maximum input voltage and maximum rated
ground voltage (described in Chapter 2 "Installation and
Preparation" in the Instruction Manual provided with the
product) are not exceeded.
Use the 8950 ANALOG UNIT to measure instantaneous power interruption in a commercial 100-
V power supply (50 Hz). The 8951 VOLTAGE/CURRENT UNIT and 3273 CLAMP ON PROBE
are also used at the same time to measure the amount of current flowing to equipment.
CH1: Connection of the 9198 to the 8950 ANALOG UNIT
Connect the cord and measure the commercial power supply.
CH2: Connection of the 9198 to the 8950 ANALOG UNIT
Connect the cord and measure the internal voltage of equipment likely to be affected by
instantaneous power interruption.
CH3: Connect the 3273 CLAMP ON PROBE to the 8951 VOLTAGE/CURRENT UNIT, and measure the
current flowing in the equipment during instantaneous power interruption.
2. Connection
1. Method
Equipment
5V
12 V
GND
100 V
50 Hz
3273
9198
CH1
CH2
CH3
8855
9198