Victor 8155 User Manual
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Victor 8155 User Manual

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VICTOR 8155
Digital Multimeter
User's Manual

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Summary of Contents for Victor 8155

  • Page 1 VICTOR 8155 Digital Multimeter User's Manual...

  • Page 2: Table Of Contents

    Contents 1. Safety Notices ........................2 2. Introduction ........................6 3. General indicators ......................7 4 Quick reference......................... 7 4.1 Check the accessories of the product ..............7 4.2 the front pane at a glance ..................9 4.3 Introduction to keys ....................9 4.4 Introduction to the display ..................

  • Page 3: Safety Notices

    1. Safety Notices To avoid personal injury and prevent damage to the product, be sure to use this product in accordance with the manual. Before fully understanding and meeting the following warning, do not proceed to the next step.  Safety ground. The safety ground must be firmly connected to the ground pin at the power outlet and insert the instrument plug into a grounded outlet.
  • Page 4 Table 1 Different functions of input terminals Measurement function Input terminals Overload protection DC voltage 1000V DC or 750V AC AC voltage 1000V DC or 750V AC Frequency 250V DC and AC peak 2W resistance 1000V DC or 750V AC INPUT Capacitance 250V DC and AC peak...
  • Page 5 current measurement circuit. 2) If the effective value of the measured current AC + DC is within the range from 200 mA to 10 A, only 10A and LO terminals are allowed to be used in the measurement. 3) When the measurement of current is conducted, before the multimeter is powered on, be sure to select the proper current input terminals based on the estimation.
  • Page 6 Product category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a "Monitoring and Control instrumentation" product. This product may contain substances that might be harmful to the environment or human health; in order to avoid the release of hazardous substances into the environment or harm to human health, we recommend the use of appropriate methods to recycle this product in order to ensure that most of the materials are reused or recycled.

  • Page 7: Introduction

    Its comprehensive features, full-range overload protection and unique design make it the first choice for electricians and university laboratories. In addition, VICTOR 8155 are equipped with the calibration function which allows the user to calibrate according to actual needs and is simple and convenient.
  • Page 8  Simple external calibration function  Variety of mathematical functions: statistics (maximum, minimum), relative measurement, dB, dBm.  On-off, diodes, reading hold, data hold / reading, key tone, trigger measurement and so on.

  • Page 9: General Indicators

    3. General indicators 1-1 Mode of display: 3.5-inch LCD display; 1-2 Maximum display: 220 000 (5 1/2) automatic polarity display and unit digit display; 1-3 Range selection: automatic / manual; 1-4 Note to over-range: the screen displays "-OL-"; 1-5 Measuring rate: fast (6 times / sec), medium (4 times / sec), slow (1 times / sec);...

  • Page 10: The Front Pane At A Glance

    5½ digits standard accessories:  a pair of probes  a double end three-wire power line  a CD-ROM  two backup power fuses Optional accessories:  RS232 serial line  USB cable 4.2 The front panel at a glance The front panel of the table-type multimeter is shown in Figure 1.1.1.
  • Page 11 Freq HOLD Ω SHIFT DC V AC V AD+DC AUTO Period DUTY 2W 4W Enter TRIG EXIT DC I AC I -|(- SAVE Cont Figure 1.2.1 Keys Switch of multimeter Press the key to turn on or off the meter. The basic measurement function keys DC V Press the key to enter the DC voltage measurement interface;...
  • Page 12 2. Adjust the frequency of the square wave output; 3. Browse the stored data; 4. Adjust the upper and lower limits; 、 Function: 1. Change the measurement speed; 2. Select the position where the square wave needs adjustment; 3. Select the position where the upper and lower limits need adjustment; Enter Function: 1.
  • Page 13 trigger; AC+DC Square wave output key, press the key to output a square wave signal with fixed amplitude and tunable frequency. Press the Enter key to enter the frequency adjustment, control the arrow keys to adjust, and then press the Enter key after the adjustment is done.
  • Page 14 browse the previous data and it will display 600. That is to say, saving and reading are conducted in circular manner. EXIT System information checking setting key, press the key to view the current model, serial number, software version, and language, buzzer, screen brightness and so on can be set.
  • Page 15 keys to change the comparison value, and then press Enter to complete the setting. When the displayed value is larger than the comparison value, the buzzer will ring out; otherwise, it will not. SHIFT Lower limit comparison function, which is only valid in case of AC and DC voltage.

  • Page 16: Introduction To The Display

    according to the measured values, and the minimum value is displayed on the secondary display 4.4 Introduction to the display AUTO TRI 1.99999 AUTO 2V AUTO Slow Local Figure 1.3.1 Interface of the display Table 1.3.1 Interface Module Description Note displays the function currently under operation displays the mode of trigger: automatic trigger, single trigger, external trigger...

  • Page 17: Introduction To The Back Panel

    running the functions such as save (SAVE), (read) MEM, compare (COMP), external trigger (EXT), and DC + AC, the corresponding function information is shown on the third and fourth panes. The fifth pane displays whether the mode is local or remote. 4.5 Introduction to the back panel Figure 1.5.1(1) Sketch map of five and a half digits back panel Table 1.5.1 Description of back panel...

  • Page 18: Turn On The Multimeter

    Adjust Handle Carrying Working position position 4.7 Turn on the multimeter 1. Connect the AC power supply 1) The power supply of 110V or 220V for the multimeter can be selected, adjust the voltage selector on the back panel of the multimeter according to the power supply. 2) Use the power line provided to connect the multimeter to AC power.

  • Page 19: Instruction On Measurement

    4) If after the above checks, the instrument still does not start, please contact the relevant department. 5 Instruction on measurement Notes: 1. After the voltage up to 1000 VDC is measured, it is better to wait for about 2 minutes, and then conduct the low voltage measurement with the resolution rate 1 to 10 μV.
  • Page 20 AUTO TRI 1.99999 AUTO 2V AUTO Slow Local Figure 2.1.1 DC Voltage Measurement Notes: the measured voltage value is shown on the main display, and the value on the secondary screen represents the ratio of the current measured value and the full scale.

  • Page 21: Current Measurement

    measurement interface is shown in Figure 2.1.3: AUTO TRI 1.99966 999.996H AUTO 2V AUTO Slow Local Figure 2.1.3 AC Voltage Measurement Note: the measured voltage value is shown on the main display, and the value on the secondary screen represents the measured frequency of the current input signal. 2.
  • Page 22 Measurement method: DC I 1. Press to select DC current measurement function. The DC current measurement interface is shown in Figure 2.2.1: AUTO TRI 2.00000 AUTO 2A AUTO Slow Local Figure 2.2.1 DC Current Measurement Notes: the measured voltage value is shown on the main display, and the value on the secondary screen represents the ratio of the measured value and the full range 2.
  • Page 23 Figure 2.2.3 Method of connecting test terminals for high current 5.2.2 AC current measurement Current measurement is designed for low and high current respectively with different methods of connection. Range for low current: 200uA, 2mA, 20mA, 200mA Range for high current: 2A, 10A. Measurement method: AC I 1.

  • Page 24: Resistance Measurement

    3. Probe the test points and read the display. Figure 2.2.5 Method of connecting test terminals for low current Figure 2.2.6 Method of connecting test terminals for high current 5.3 Resistance measurement Note: Before measuring the resistance, disconnect the circuit power and discharge all high-voltage capacitors to avoid damages to the multimeter or the multimeter tested.
  • Page 25 AUTO TRI Ω 099.997 Ω 100% AUTO 200Ω AUTO Slow Local 图 2.3.1 二线电阻测量界面 Figure 2.3.1 2-wire resistance measurement interface Notes: the measured voltage value is shown on the main display, and the value on the secondary screen represents the ratio of the current measured value and the full range.

  • Page 26: Capacitance Measurement

    AUTO TRI 4W Ω 099.996 Ω 100% AUTO 200Ω AUTO Slow Local Figure 2.3.3 4-wire resistance measurement interface Note: the measured voltage value is shown on the main display, and the value on the secondary screen represents the ratio of the current measured value and the full range.

  • Page 27: Frequency Measurement

    AUTO TRI 0.991 44.51% AUTO 200uF AUTO Slow Local Figure 2.4.1 Capacitance measurement interface Note: the measured capacitance value is shown on the main display, and the value on the secondary screen represents the ratio of the current measured value and the full range.

  • Page 28: Diode And On-Off Test

    AUTO TRI Freq AUTO TRI Period 999.996 20.0000 AUTO Local AUTO Local Figure 2.5.1（1）frequency measurement interface Figure 2.5.1（2）cycle measurement interface Notes: when measuring frequency or cycle, the value on the secondary screen represents the RMS of AC voltage of the input signal. 2.
  • Page 29 is higher than the measurement threshold, it displays OPEN, otherwise it displays the measured voltage value. The measurement threshold for diode is 3V. The diode measurement interface is shown in figure 2.6.1: AUTO TRI DIODE 0.70009 Local Figure 2.6.1 Diode measurement interface 2.

  • Page 30: Duty Cycle Measurement

    AUTO TRI 9.9999Ω OPEN Local Local Figure 2.6.3 On-off measurement interface 2. According to Figure 2.6.4, connect the red and black test leads respectively to the proper input terminals. 3. Probe the test points and when the measured resistance is lower than the threshold of the buzzer, the buzzer rings out.

  • Page 31: Square Wave Output

    Figure 2.7.2 Five and a half digits duty cycle measurement terminal connection 5.8 Square wave output AC+DC Press to turn on the square wave output function and the mark of square wave (SWave) will appear in the measurement configuration bar. When it is turned on, the square wave is output directly.
  • Page 32 OUTPUT 0,001,000 AUTO Square Clear Figure 2.8.2 Entering the frequency adjustment interface Press to select where the square wave output frequency needs to be adjusted and the selected location has a crossbar below, shown in figure 2.8.3; OUTPUT 0,001,000 Clear AUTO Square Local...
  • Page 33 terminal on the back panel. EXIT SHIFT Press to exit the square wave output interface to the interface of last measurement. For example, after the DC voltage is measured shown in figure 2.8.5. Press the square wave enter key to enter into the interface in figure 2.8.1 to change the output frequency of the square wave again or turn off the square wave output.

  • Page 34: Technical Indicators

    6 Technical indicators Limits of error: ± (a% reading + digits), guarantee period of one year Ambient temperature: 18 ~ 28° C Humidity: no more than 75% RH Temperature coefficient: 0.1x precision / 1° C Preheating time: 1 hour 1. DC voltage measurement Range Range of Resolution...
  • Page 35 4. AC current measurement Range Range of Resolutio Limits of error measurement n ratio ± （0.3%+400） 200uA 0.001uA~220.000uA 0.001uA ± （0.3%+400） 0.01uA~2.20000mA 0.01uA ± （0.3%+400） 20mA 0.1uA~22.0000mA 0.1uA ± （0.3%+400） 200mA 1uA~220.000mA ± （0.3%+400） 0.01mA~2.20000A 10uA ± （1%+20） 0.1mA~10A 100uA 5.

  • Page 36: Calibration

    ± （0.1%+3） 20kHz 0.1Hz~22.0000kHz 0.1Hz ± （0.1%+3） 200kHz 1Hz~220.000kHz ± （0.1%+3） 2MHz 10Hz~2.20000MHz 10Hz ± （0.1%+3） 20MHz 100Hz~22.0000MHz 100Hz Duty cycle 5.0%~95.0%（the error is within 10 digits） 8. Diode measurement Range Range of Input protection Note measurement 200Ω level 0~2V 250Vp Input current is around 0.75mA...
  • Page 37 自动触发 DCV校准 000.000 000.000 200mV 慢速 输入 本地 Definition The position represents the current calibration function The position represents the current range of calibration The position represents the current value entered The position is used to input the RMS The position represents the current measurement value 4.
  • Page 38 completed, and the program will automatically switch to the 20V level, and change the prompt. 20V: short circuit for the input terminals, after the measured value is stable press Enter to confirm. Then according to the prompt, enter 20V, then set the true value, after the measured value is stable press Enter to confirm.
  • Page 39 completed, and the program will automatically switch to the 200V level, and change the prompt. 200V: According to the prompt, enter the right value, then set the true value, after the measured value is stable press Enter to confirm. Then the calibration for 200V range is completed, and the program will automatically switch to the 750V level, and change the prompt.
  • Page 40 after the measured value is stable press Enter to confirm. Then the calibration for 200mA range is completed, and the program will automatically switch to the 2A level, and change the prompt. 2A: open circuit for the input terminals, after the measured value is stable press Enter to confirm.
  • Page 41 the prompt. 200mA: Input 20mA, after the measured value is stable press Enter to confirm. Then according to the prompt, enter 200mA, then set the true value, after the measured value is stable press Enter to confirm. Then the calibration for 200mA range is completed, and the program will automatically switch to the 2A level, and change the prompt.
  • Page 42 Enter to confirm. Then according to the prompt, enter 20kΩ, then set the true value, after the measured value is stable press Enter to confirm. Then the calibration for 20kΩrange is completed, and the program will automatically switch to the 200kΩ level, and change the prompt.
  • Page 43 20nF range is completed, and the program will automatically switch to the 200nF level, and change the prompt. 200nF: open circuit for the input terminals, after the measured value is stable press Enter to confirm. Then according to the prompt, enter 200nF, then set the true value, after the measured value is stable press Enter to confirm.

  • Page 44: Communication Interface

    8 Communication interface VICTOR 8155 is equipped with communication interfaces: RS232 and USB. 1. Connection and setting of RS232 interface: The meter is connected to the computer via a parallel one-male-and-one-female serial port line. RS232 interface: Baud rate is 115200bits / s, a frame of the information is 9 digits, 8-digit data, 1 stop bit, no parity check.
  • Page 45 2. Replace the fuse Refer to "4.5 Introduction to the back panel" to find where the fuse is, one is the power fuse, and the other current fuse. Specifications of fuse: 0.5A L 250V fast-blow fuse Φ5x20mm Steps: 1) Turn off the power and unplug the power plug. 2) Find the location of the fuse;...

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