21
！
CAT
Ⅰ
(
1000V
)
CAT
Ⅱ(
300V
)
Ω
COM
20A
T1AL 250V
ALL INPUT
1KV MAX
500mA
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
POWER
ON
OFF
DC
SOURCE
-
+
CURRENT
MED
AUTO
TH1942
50000 Count Multimeter
DC Current measurement at Range: 5A, 20A
POWER
ON
OFF
AC
SOURCE
CURRENT
！
CAT
Ⅰ
(
1000V
)
CAT
Ⅱ(
300V
)
Ω
COM
20A
T1AL 250V
ALL INPUT
1KV MAX
500mA
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
MED
AUTO
TH1942
50000 Count Multimeter
AC Current measurement at Range: 5A, 20A
CAUTION: Maximum Input = 20A DC or RMS Maximum test times : < 20s
Figure 3-2 DC and AC Current Measurements
3.3.2 Front Panel Fuse Replacement
WARNING: Make sure the instrument is disconnected from the power line and other equipment
before replacing the AMPS fuse.
1. Turn off the power and disconnect the power line and test leads.
2. From the front panel, use a screwdriver to rotate the fuse carrier several turns counter-clockwise.
Take the fuse carrier out of the socket.
3. Remove the fuse and replace it with the same type (T1AL, 250V, 5×20mm
）
.
CAUTION: Do not use a fuse with a higher current rating than specified or instrument damage
may occur. If the instrument repeatedly blows fuses, try to find out the reason
before replacing the fuse.
4. Install the new fuse by reversing the procedure above.
