Fluke 43B Application Guide

Scope Mode
Dual Channel Measurement
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Dual Channel Measurement
Dual channels allow for simultaneous display of cause and effect. For example,
turning on a motor will momentarily draw a high current and cause a voltage
sag. The current will be high immediately after turn-on and should stabilize to
some nominal value. Especially if the supply is weak, a voltage sag will be
observed. The dual channel mode can be used to observe current and voltage
simultaneously. The scope mode gives many possibilities to zoom in on signal
details so that every phase of the start up of the motor can be monitored.
1
Make connections as shown below
2
Reset Fluke 43B
3
Press MENU twice to open the main menu.
4
Fluke 43B is in single channel mode now. Voltage is displayed on channel [1].
In the next steps dual channel mode is selected so that current is displayed
simultaneously on channel [2]. Proceed as follows.
 SCOPE

Fluke 43B Specifications

General

Category	Power Quality Analyzer
Interface	RS-232
Volts AC/DC	Yes
Ohms	Yes
Continuity	Yes
Diode Test	Yes
Capacitance	Yes
Harmonics Measurement	Up to 51st harmonic
Display	LCD
Battery Life	Approximately 6 hours
Weight	1.1 kg (2.4 lb)
Data Storage	Yes
Amps AC/DC	0.1 to 1000 A (with clamp)
Power Measurement	W, VA, VAR, PF
Dimensions	50 mm
Current Measurement Range	Via current clamp accessories (not built-in)