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CEM DT-9995 Instruction Manual

Automotive multimeter with pc interface
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AUTOMOTIVE MULTIMETER
WITH PC INTERFACE
INSTRUCTION MANUAL
Contents
-1
..................................................................................1
Introduction
..........................................................................................2
...........................................................................6
Meter Basics....................................................................................7
Digital and Analog display..................................................................8
Function and Range Select..................................................................9
............................................................10
Mode Button... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 0
Range Select Button..................................................................10
Range Exit ..............................................................................10
+ TRIG Button........................................................................10
Data Hold /Backlight Button......................................................12
MAX/MIN/RS232 Button............................................................12
Relative Button........................................................................12
Voltage (V)..............................................................................14
Resistance (Ω ) ........................................................................15
).....................................................................16
)............................................................17
AC or DC Current (A) ...............................................................18
0
F) ...............................................................19
Frequency (Hz) .....................................................................20
)...........................................................................21
Duty Cycle (%)........................................................................22
Ms - PULSE& ms- PERIOD (ms) ................................................23
) ..............................................................................25
Maintenance.................................................................................26
Replacing The Battery.....................................................................26
Battery Installation...........................................................................26
Replacing The Fuses........................................................................27
Trouble Shooting...........................................................................28
General Specifications..................................................................29
Electrical Specifications..................................................................30
his chapter covers brief, introductory information, You will find:
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  • Page 1: Table Of Contents

    ……………………………………………………………………….1 Introduction Safety ………………………………………………………………………………2 …………………………………………………………………6 Getting Started Meter Basics…………………………………………………………………………7 Digital and Analog display…………………………………………………………8 AUTOMOTIVE MULTIMETER Function and Range Select…………………………………………………………9 ……………………………………………………10 Push-button Functions WITH PC INTERFACE Mode Button… … … … … … … … … … … … … … … … … … … … … … 1 0 Range Select Button…………………………………………………………10 Range Exit ……………………………………………………………………10 + TRIG Button………………………………………………………………10...

  • Page 2: Safety

     Safety precautions DANGER  Engines produce carbon monoxide which is odorless, causes slower reaction time, and can lead to serious injury. When the engine is operating, keep service areas WELL VENTILATED or attach the vehicle exhaust system to the shop exhaust removal system.
  • Page 3 Safety Cont’d … Safety Cont’d … Danger IMPORTANT  Avoid electrical shock: do not touch the test  To maintain accuracy of the meter,replace the discharged battery leads, tips or the circuit being tested. immediately when the battery symbol appears on the ...

  • Page 4: Getting Started

    Getting Started Notes: his chapter will help you get started. It describes the basic functions of the Meter.

  • Page 5: Meter Basics

    Meter Basics Cont’d… Meter Basics Digital and Analog display 1. Digital and Analog display Display features: a. Four character digital display b. Symbols to identify function c. Analog bar graph The digital display is best for stable input. The bar graph is best for rapidly changing input.

  • Page 6: Function And Range Select

    Meter Basics Cont’d … Push–button Functions Mode Button Function and Range Select Press the Mode button to toggle Turn the rotary switch in either between DC and AC in the voltage & current measurements. direction to select a function. Range / # CYL Select Most functions also have ranges.

  • Page 7: Data Hold /Backlight Button

    Data Hold/ Backlight The change in the trigger slope is indicated by a + or – shown at the lower left corner of the display. The Data Hold Feature stores the last reading in memory.  Press the Data Hold button The Meter defaults to a –...

  • Page 8: Meter Functions Voltage (V)

    The displayed value is the difference between the reference value Meter Functions - Voltage (V) and the measured value. The meter will automatically 1. Perform the measurement as described in the operating select he best voltage (V) range. instructions. Select DCV or ACV with the 2.

  • Page 9: Resistance (Ω )

    Meter Functions – Resistance (Ω) Meter Functions –Diode Check ( IMPORTANT: Turn the power OFF to IMPORTANT: If you are testing the test circuit an application that has capacitors in the circuit, be sure to turn the Select the Diode Check ( function with the rotary switch.

  • Page 10: Audible Continuity ( )

    Meter Functions –Audible Continuity ( Meter Functions –AC or DC Current (A) IMPORTANT: All current measured IMPORTANT: Turn the power flows through the meter. OFF on the test circuit It is important that you do not:  Measure current greater than Select the Audible Continuity 600 Volts AC or DC, with ) function with the rotary...

  • Page 11: Temperature (℃/ F)

    Meter Functions –Temperature (℃/ IMPORTANT: To avoid heat Meter Functions –Frequency(Hz) damage to the meter, keep it away from sources of very high temperature. The Select Frequency life of the Temperature Freq ) setting with the rotary Probe also reduced switch.

  • Page 12: Dwell ( )

    Meter Functions-Dwell ( Meter Functions-Duty Cycle (%) Select the proper Dwell Select the % Duty Cycle range with the rotary switch. range with the rotary switch. Insert: Insert:  Black lead in terminal.  Black lead in V- Ω -RPM terminal.
  • Page 13 Meter Functions- ms-PULSE (Pulse Width) & To measure pulse width (mS): Select the mS-Pulse function ms- PERIOD (Period) with the rotary switch . Press the ±TRIG button for Pulse Width is the length of time an actuator is energized. For 2 seconds until the negative example, fuel injectors are activated by an electronic pulse from (-) trigger slope is displayed...

  • Page 14: Rpm

    Meter Functions-RPM/×10RPM Select the range with the Maintenance rotary switch. Replacing The Battery Select the × 10RPM range WARNING: To avoid electric shock, disconnect the test leads with the rotary switch (1,000 to from any source of voltage before removing the battery door. 12,000 RPM).

  • Page 15: Replacing The Fuses

    Trouble Shooting Replacing The Fuses WARNING: To avoid electric shock, disconnect the test leads 1. Meter will not turn ON. from any source of voltage before removing the fuse door.  Check the battery contacts for a tight fit. 1. Disconnect the test leads from the meter and any item under ...

  • Page 16: General Specifications

    General Specifications Electrical Specifications Electrical Specifications General Specifications · Safety: Designed to Protection Class III requirement of *Accuracy is given as±([% of reading]+[number of least significant   digits]) at 18℃ to 28℃(65 F to 83 F), with relative humidity up to EN61010-1 over-voltage Category III (CATIII).
  • Page 17 Overload protection: 250V dc or ac rms. +2.5% of rdg + 5 dgts 10mA Overload Protection: 0.5A / 250V and 20A / 500V Fuse. DC Voltage (Auto-ranging for uA and mA) Maximum Input: 400mA dc or 400mA ac rms on uA / mA ranges, 20A dc or ac rms on 20A range.
  • Page 18 +3.0% of rdg + 5 dgts 4.000uF 40.00uF 10nF 100.0uF 0.1uF +5.0% of rdg + 5 dgts Input Protection: 250V dc or 250V ac rms. Temperature Range Resolution Accuracy Frequency (Auto-ranging) -20 o C~+760 o C 1 o C +3% of rdg +5dgts(Meter only, Range Resolution Accuracy...

  • Page 19: Ready - To - Use Windows® Application Program

    ·Please press off line ·Move the cursor to the number of data that you want to print out. (e.g.: If you want to print the graph area from number 0 to 100, move the cursor to number 0 and click. If you want to print the graph area from number 50 to 100, move the cursor to number 50 and click).
  • Page 20 Note: Please click “Help” on the PC interface for detailed instruction.

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