(4) Read the diode’s forward bias voltage drop on the
display. A silicon diode typically has a forward bias
voltage of 0.7V. A germanium diode typically has a
forward bias voltage of 0.3V. A
0V
reading in both
directions indicates a shorted diode. A readout of
1.
means either of two things: the leads are reversed, or
the diode is defective. Reverse the leads. If this still
produces a readout of
1.
, the diode is defective and
should be replaced.
MEASURING TRANSISTOR hFE
••
Warning
••
To avoid possible electrical shock or damage to the
meter, do not apply a voltage greater than 250V between
the meter’s
(DMM52FSG) or
(DMM53FG) jack and
ground.
(1) Turn the rotary switch to the
hFE
position.
(2) Insert the
COM
plug of the included multi-function
plug adaptor into the meter’s front-panel
COM
jack
and the + plug of the adaptor into the
(DMM52FSG) or
(DMM53FG)
jack.
(3) Observing the type of transistor and the labeling of its
leads, carefully insert the transistor’s collector, base
and emitter into the
c
,
b
and
e
holes of the adaptor.
(4) Read the transistor’s forward current gain on the LCD.
SPECIFICATIONS
Parameter or
Attribute
Specification
Feature/
Function
AC voltage
Measurement
0 to 200mV/2V/20V/200V/600V
ranges
(DMM52FSG);
0 to 2V/20V/200V/600V
(DMM53FSG)
Measurement
±(0.8% of r 3 digits) in
accuracy
2V, 20V and 200V ranges;
±(1.2% of r 3 digits) in
200mV and 600V ranges
Maximum
100
애
V (DMM52FSG); 1mV
resolution
(DMM53FSG)
13
DMM52&53FSG Manual_R1-FINAL-102114_Layout 1 11/21/14 12:03 PM Page 13
