Fluke 43B Application Guide

Fluke 43B
Applications Manual
14
Testing a Diode
Check a diode in both forward direction and reverse direction. Useful for
checking whether the diodes in a rectifier are still intact.
1
Open the main menu.
2
3 Select (diode)
4
Make connections as shown below:
 Observe the voltage in forward direction (A). It should read about 0.5V.
Now turn the diode in reverse direction (B) and look at the display again.
• The Fluke 43B should display OL (Over Load), indicating a very high
resistance. If not, the diode is faulty and should be replaced.
 OHMS
/
CONTINUITY
/
CAPACITANCE
A
B


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)