Application Examples
5
U1401B User’s and Service Guide
99
5
Probe the base terminal with the red test lead, and the
other two pins (in turn) with the black test lead. Record
the readings.
6
Repeat
step 5
, but reverse the red and black test leads.
Record the readings.
7
The polarities (NPN or PNP) and terminals can be
identified by referring to
Table 5- 3
,
Table 5- 4
and
Table 5- 5
. V
be
is always greater than V
bc
. Most TO- 92
transistors will have pin 1 as the emitter. It is
recommended that you check and verify with the specific
data sheet from the manufacturer.
Table 5-2
Base terminal according to probe test
Pin
Probe
Base
Red/Black
Black/Red
1-2
OL
OL
3
1-3
OL
OL
2
2-3
OL
OL
1
Table 5-3
Polarity and terminals if Pin 3 is the base
Test leads
Pins
Terminals
(V
be
>V
bc
)
Type
3-1
3-2
Red/Black
0.6749 V
0.6723 V
ECB
NPN
0.6723 V
0.6749 V
CEB
NPN
Black/Red
0.6749 V
0.6723 V
ECB
PNP
0.6723 V
0.6749 V
CEB
PNP
Summary of Contents for U1401B
Page 1: ...Agilent Technologies U1401B Handheld Multi Function Calibrator Meter User s and Service Guide ...
Page 16: ...XVI U1401B User s and Service Guide Contents ...
Page 46: ...26 U1401B User s and Service Guide 1 Getting Started ...
Page 64: ...44 U1401B User s and Service Guide 2 Calibrator Output Operations ...
Page 67: ...Making Measurements 3 U1401B User s and Service Guide 47 Figure 3 1 DC voltage measurement ...
Page 104: ...84 U1401B User s and Service Guide 4 Changing the Default Settings ...
Page 115: ...Application Examples 5 U1401B User s and Service Guide 95 Figure 5 5 Zener diode test ...
Page 146: ...126 U1401B User s and Service Guide 6 Maintenance ...
