UT3550 Battery Tester Users Manual
18
4.1.3
【
R-Range
】
UT3550 series battery internal resistance tester has 5 ranges, it divided into manual and automatic
mode, as shown in the following Table 4-1-2,
Table 4-1-2 Range Selection Method and Variation Rane
Range Mode
Description
AUTO
The instrument automatically selects the corresponding best test range.
MANUAL
The instrument will always use the user-specified range for testing.
Manual Range
Automatic Range
Range
<4>30
Ω
<4> AUTO
3
Ω～
30
<3>3
Ω
<3> AUTO
300m
～
3
<2>300m
Ω
<2> AUTO
30m
Ω
~ 300m
Ω
<1>30m
<1> AUTO
3.0m
～
30m
<0>3m
Ω
<0> AUTO
0.001m
Ω
~ 3m
Ω
Setting Steps
1.
Press
【
Test
】
key to enter the <test>page or press
【
Utility
】
key to enter the <setup> page
；
2.
Use the cursot key
▼
to move cursor to the
【
R-RANGE
】
field
；
3.
A
ccording to user’s needs, use the function keys at the bottom of the screen to select the
desired range method and range. If user select AUTO, the instrumemt will automatically select
the corresponding best test range and range; if user select MANUAL, the instrument will always
use the user-specified range for testing; INC+ means increase the range, while the range is
changed to lock; DEC- means decrease the range, and the range is changed to lock at the same
time.
When the range is automatic, the instrument will predict the range in each measurement period, so
the test speed will be slightly slower than the locked range. Moreover, in the case of automatic
measurement, frequently changing the range will slow down the response. Usually when the
instrument is used as a sorting measurement, the automatic range mode is not suitable. For sorting
measurement, it is recommended to select manual range mode.
4.1.4
【
V-Range
】
Voltage range setting
：
UT3550 series battery internal resistance tester has 3 ranges and two ranges
selection modes: automatic and maunal
Table 4-1-4 Range Selection Mode and Variation Range
Range Mode
Description
AUTO
The instrument automatically selects the corresponding best test range.
MANUAL
The instrument will always use the user-specified range for testing.
Manual Range
Automatic Range
Range
<1>100V
<1> AUTO
10~100V
<0>10V
<0> AUTO
0.0001~10 V
Setting Steps
1.
Press
【
Test
】
key to enter the <test>page or press
【
Utility
】
key to enter the <setup> page;
2.
Use the cursor key
▼
to move the cursor to the
【
V-RANGE
】
field
；
3.
A
ccorsing to user’s needs, use the function keys at the bottom of the scr
een to select AUTO,
MANUAL, INC+ or DEC-.
When the measured value exceeds the setting range, OL is displayed on the test interface.
When the range is automatic, the instrument will make range prediction at each measurement
