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UT70C
UNI-T UT70C User Manual
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Manual
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Receiving Data
T
ransmitting Data
Data T
erminal Ready
Grounding
Data Set Ready
Request to Send
Clear to Send
RX
TX
DTR
GND
DSR
RTS
CTS
3
2
20
7
6
4
5
2
3
4
5
6
7
8
2
3
4
5
6
7
8
RS232C Serial Port (1)
A.
RS232C Port Cable
The
Meter
Computer
D-sub
9 Pin Male
D-sub
9 Pin
Female
D-sub
25 Pin
Female
Pin
Name
Remark
B
.
Setting of RS232C Serial Ports
Default of RS232C serial port for communication is set
as:
Baud Rate
9600
Start bit
1 (always 0)
Stop bit
1 (always 1)
Data bits
8
Parity Odd
None
Model UT70C:
OPERA
TING MANUAL
45
44
46
Table of Contents
Table of Contents
1
Overview
3
Unpacking Inspection
4
Safety Information
5
Rules for Safe Operation
6
International Electrical Symbols
8
The Meter Structure
8
Rotary Switch
9
Functional Buttons
10
Display Symbols
12
Measurement Ranges
14
Selecting a Measurement Range
14
Manual Ranging and Autoranging
14
Measurement Operation
16
AC Voltage Measurement
16
DC Voltage Measurement
17
DC Milivolt Measurement
18
Measuring Continuity, Resistance, Conductance & Capacitance
19
Testing Diodes
23
DC or AC Current Measurement
24
Frequency & Duty Cycle Measurement
26
MAX MIN Recording Mode
28
PEAK MAX MIN Mode
30
Operation of Hold Mode
31
Operation of Auto Hold Mode
32
The Use of Relative Value and Relative Percentage Value Mode
33
Turning on the Display Backlight
34
Analogue Bar Graph Display
34
Sleep Mode
35
Full Icons Display
35
General Specifications
36
Accuracy Specifications
37
AC Voltage
37
DC Voltage
37
Continuity, Resistance & Conductance Test
38
Capacitance
38
Diodes Test
38
DC Current
39
AC Current
39
Frequency & Duty Cycle
40
Maintenance
41
General Service
41
Testing the Fuses
42
Replacing the Battery
43
Replacing the Fuses
44
RS232C Serial Port
45
RS232C Port Cable
45
Setting of RS232C Serial Ports
45
System Requirements for Installing the UT70C Interface Program
46
4
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UNI-T UT70C Specifications
General
Brand
UNI-T
Model
UT70C
Category
Multimeter
Language
English
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