GW Instek GDM-398 - Manual (Page 3)

Table of Contents
1
Table of Contents
O VERVIEW............................................................................................................................. 4
Unpacking Inspection ....................................................................................................................... 5
Safety Information ............................................................................................................................ 6
Rules for Safe Operation ................................................................................................................... 7
International Electrical Symbols ....................................................................................................... 9
The Meter Structure ........................................................................................................................ 10
Rotary Switch ................................................................................................................................... 11
Functional Buttons.......................................................................................................................... 12
Display Symbols .............................................................................................................................. 13
M EASUREMENT OPERATION ........................................................................................... 16
A. DC/AC Voltage Measurement .................................................................................................... 16
B. DC/AC Current Measurement .................................................................................................... 19
C. Resistance Measurement ........................................................................................................... 22
D. Testing for Continuity ................................................................................................................ 25
E. Testing Diodes ............................................................................................................................ 27
F. Capacitance Measurement ......................................................................................................... 30
G. Frequency Measurement ........................................................................................................... 33
H. Temperature Measurement (GDM-397 only) ........................................................................... 35
I. Transistor hFE Measurement (GDM-398 only) .......................................................................... 37
J. EF Function (GDM-398 only) ...................................................................................................... 39
Hold Mode ...................................................................................................................................... 41
RANGE button ................................................................................................................................ 42