25
POWER
ON
OFF
RESISTANCE
！
CAT
Ⅰ
(
1000V
)
CAT
Ⅱ(
300V
)
Ω
COM
20A
T1AL 250V
ALL INPUT
1KV MAX
500mA
MAX
V
1000V
MAX
DC I
AC I
Period
dB
dBm
%
Comp
Hold
Menu
Local
2nd
DC V
AC V
Ω
Freq
AC+DC
Rel
Rate
Esc
Shift
Trig
Auto
mA
TH1942
FAST
50000 Count Multimeter
Note:
Source current flows from the
to COM terminals.
Figure 3-5
Continuity Measurement
3.7 Testing Diode
Model TH1942 can also be used to measure the forward voltage drop of general-purpose diodes and the
zener voltage of zener diodes. A current of 0.5mA will be selected for diode measurement.
Note:
Diode test has a non-selectable reading rate of Medium
3.7.1 Connections
Assuming Model TH1942 is under factory default conditions, the basic procedure is as follows:
1. Connect test leads to
and COM terminals.
2. Press
for diode measurement function.
3. Connect test leads to the diode under test as shown in Figure 3-6.
4. Take a reading from the display.
POWER
ON
OFF
DIODE
MED
！
CAT
Ⅰ
(
1000V
)
CAT
Ⅱ(
300V
)
Ω
COM
20A
T1AL 250V
ALL INPUT
1KV MAX
500mA
MAX
V
1000V
MAX
DC I
AC I
Period
dB
dBm
%
Comp
Hold
Menu
Local
2nd
DC V
AC V
Ω
Freq
AC+DC
Rel
Rate
Esc
Shift
Trig
Auto
mA
TH1942
50000 Count Multimeter
Note: Source current flows from the
to COM terminals
Figure 3-6
Diode Measurement
