UNI DM-1170A Operation Manual

80000 counts, bench digital meter

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80000 Counts

Bench Digital Meter DM-1170A

Operation Manual V1.1

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Page 1 80000 Counts Bench Digital Meter DM-1170A Operation Manual V1.1...
Page 2: Table Of Contents
CONTENTS 1. GENERAL INTRODUCTION ......................- 1 - 2. PANEL INSTRUCTIONS ......................... - 2 - 3. SPECIAL FUNCTIONS ........................- 6 - 4. MEASUREMENT RANGE ....................... - 8 - 5. OPERATION INSTRUCTIONS ......................- 9 - 6. PROGRAMMABLE CONTROL ..................... - 15 - 7.
Page 3: General Introduction
1. GENERAL INTRODUCTION DM-1170A is an intelligent and multi-functional device for various measurements. It features high quality, high accuracy, high reliability, high frequency measurement and low cost. The meter is in compliance with IEC 6010 CAT II 1000V and CAT III 600V high voltage standards. Other features of this instrument are listed below.
Page 4: Panel Instructions
2. PANEL INSTRUCTIONS Fig.2-1 Front panel 1. Power switch 2. Auxiliary keys 3. Terminals 4. Function keys 5. LCD display Fig. 2-2 Rear Panel 6. AC110V/220V selector switch 7. Fuse locator 8. Power socket 9. RS232 interface (USB adaptor provided) - 2 -...
Page 5 2.1 Power Switch It turns on or off the meter. 2.2. Auxiliary Keys Description SELECT  Selects measurement mode.  When using the meter to output square waveform, press SELECT key to change duty cycle by 1%. RANGE  Selects measurement range. The meter is default at auto range mode. ...
Page 6 2nd VIEW  Selects the secondary display function. In various measuring mode, press 2nd VIEW key to cycle the displayed data on secondary display.  In square waveform output mode, press 2nd VIEW key to select output frequency  In square waveform output mode, press 2nd VIEW key for at least 2 seconds to return to 606.10Hz, 50% duty output state.
Page 7 2.5. LCD Display Symbol Description Analog bar graph 2, 3, 17 Negative sign Square waveform output High frequency measurement High resistance measurement Temperature measurement by thermocouple Low battery indication Diode / Audible continuity measurement REL▲% Relative measurement 9, 19 DC, AC, AC+DC DC, AC, AC+DC voltage or current PH+ PH- Positive Peak Hold, Negative Peak Hold...
Page 8: Special Functions
3. SPECIAL FUNCTIONS 3.1 Auto Power Off When the meter exits RS232 remote control operation mode, the auto power off function is automatically activated. “APO” appears on the LCD. If there is no operation on any of the keys within 30 minutes, the meter will be automatically powered off.
Page 9 3.3 Setting Measurement Time Measurement time can be set in all measurement functions except of Diode, Frequency, Temperature and Square waveform output. Measurement time is displayed on secondary display in the format of “0.00.00”. The maximum measurement time is 9h.59m.59s. Follow below steps to set up measurement time: 1) Select a suitable measurement range.
Page 10: Measurement Range
4. MEASUREMENT RANGE A measurement range determines the measuring limits. The meter has several measurement ranges. 1) Select a proper measurement range: If the selected measurement range is too small (the measurement signal exceeds the measurement range), the meter will display “OL” on the LCD. If the selected measurement range is t0o large, the measurement results may have a relatively low resolution.
Page 11: Operation Instructions
5. OPERATION INSTRUCTIONS 5.1 AC/DC Voltage Measurement 5.1.1 DC Voltage Measurement (DCV) WARNING: The measurement DC voltage must not exceed DC1000V! The measurement of DC voltage has three modes: DCV, (AC+DC)V+Hz and dBm+Hz. Press function key V Press SELECT key to select measurement mode. According to practical demands, press REL, MAX/MIN and 2nd VIEW keys to have relative measuring or record.
Page 12 The meter is default in auto range mode and will automatically select a most suitable range. To select a range manually for the measurement, press RANGE key to select a proper range. There are two ranges to choose from: 80.000mV/800.00mV Connect the black test lead to “COM”...
Page 13 terminal. Analog bar, MAX/MIN/AVG, Press SELECT Primary display Secondary display REL, HOLD functions DCmA DCmA Available ACmA ACmA Available (AC+DC)mA (AC+DC)mA ACmA Disable ACmA+Hz ACmA Disable 5.2.2 AC/DC Current Measurement (ACA, DCA) The measurement of AC/DC current has four modes: DCA, ACA, (AC+DC)A and ACA +Hz. Press function key 20A Press SELECT key to select measurement mode.
Page 14 Continuity mode ( ) Press function key OHM. Press SELECT key to select “ ” mode. Touch the probes to the test points and read the display. If the measurement points resistance falls below 50Ω. The beeper will sound. Analog bar, REL, MAX/MIN/AVG, A-H functions are disable in continuity mode. High resistance mode (Hi Ω) This function is used to measure the resistance above 80MΩ.
Page 15  All frequency measurement is in auto range, no manual range available.  Measurement in Hi Hz and RPM modes requires special accessories, which are not provided as standard accessories to this meter.  Analog bar, REL, MAX/MIN/AVG, HOLD functions are disabled in frequency measurement. Normal mode Press function key Hz/DUTY.
Page 16 MAX/MIN/AVG, REL, Measurement Primary display Secondary display HOLD functions Open: >2.0V. Diode is in open circuit or connected in wrong polarities. Diode ------: 0.1V-2.0V. Diode is Disable normal. Short: <0.1V. Diode is in short circuit. The beeper sounds. 5.8 Square Waveform Output The meter can be used as a square waveform generator, output the waveform with frequency range of 0.5Hz~5kHz.
Page 17: Programmable Control
6. PROGRAMMABLE CONTROL The unit is equipped with RS232 interface and relevant software, which allows easy connections to PC for remote control. Software operating environment: Windos9x/NT/2000/XP/Win7/WIN10 6.1 RS232 Port Set RS232 port is used for the data transfer between the meter and PC. There are two ports to be chosen from: COM1 and COM2.
Page 18 6.9 Digital Display Window The digital display window displays exactly the same contents as the meter LCD display does. However, the digital display window on the PC gives you an easier view. 6.10 Push Key Panel Basically, the keys on this panel have the same function as the keys on the meter. Double click on the key functions the same as pressing the meter’s key for 2 seconds.
Page 19 6.12 Real-time Graph Window Before applying this function, user must choose a desired measuring range. The X axis indicates system time, while the Y axis indicates the range of measurement data. 6.13 Recorder Control Panel In this panel function, user can set up max.and min. values of the recording time. The Start, Stop and Reset keys are used to control the data recorder.
Page 20: Specifications
7. SPECIFICATIONS 7.1 Electrical Specifications The accuracy is specified for one year after calibration at operating temperature of 18℃ to 28℃, with humidity at 0%~75%. Range Resolution Accuracy Remarks 80mV 1μV ±(3% rdg+10) 800mV 10μV Input impedance: 0.1mV ±(0.05% rdg+5) 80mV~800mV: >1000MΩ...
Page 21 Resistance (Ω) Range Resolution Accuracy Remarks 800Ω 0.01Ω ±(0.3% rdg+10) 8kΩ 0.1Ω ±(0.3% rdg+5) 80kΩ 1Ω ±(0.3% rdg+5) 800kΩ 10Ω ±(0.3% rdg+5) Overload protection: 250V RMS 8MΩ 100Ω ±(0.3% rdg+5) 0Ω~40MΩ: ±(2.5% rdg+10) 80MΩ 1kΩ >40MΩ: ±(3.5% rdg+10) Frequency (Hz) Range Resolution Accuracy...
Page 22 7.2 General Specifications Max.voltage between terminal and ground: 1000V RMS Continuity beeper: Approx.2.6kHz Display: Dual display 80000, update 4 time/Sec. Bar graph: 21 segments, update 40 time/Sec. Electromagnetic compatibility: For all ranges and functions (except capacitance), in a RF field of 1V/m, total accuracy=specified accuracy+5% of range.
Page 23: Maintenance
8. MAINTENANCE The meter is a precise and intelligent instrument. It has been accurately calibrated in the factory before shipment. Readjustment is recommended only if repairs have been made in a circuit affecting adjustment accuracy or if you have a reason to believe the unit is out of adjustment. The following instructions are for use by qualified personnel only.