CETC41 AV2498C User Manual

Optical multimeter

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AV2498C

Optical Multimeter

User Guide

The 41

Institute of China Electronics Technology Group

Corporation

Table of Contents

Summary of Contents for CETC41 AV2498C

Page 1 AV2498C Optical Multimeter User Guide The 41 Institute of China Electronics Technology Group Corporation...
Page 2 Preface Thank you very much for choosing the AV2498C Optical Multimeter which is produced by the 41 Institute of China Electronics Technology Group Corporation (abbreviated as CETC41)! This product has higher price-performance ratio than other products alike due to the robust structure and simple operation.
Page 3 inquiry ： Toll-free phone: 800－8687041 Website: http://www.ei41.com HQ(Bengbu) Service & consultation: 0552－4072248 Technical Support: 0552-4071248 Quality Supervision: 0552-4078248 FAX:0552-4082977 Email:eibb@ei41.com ADD: No.726 Huaguang Avenue, Bengbu, Anhui Post Code:233006 Branch Institute (Qingdao) Service & consultation:0532－86889847 Technical Support: 0532－86889847 Quality Supervision: 0532－86886614 FAX: 0532－86889056...
Page 4 Email:eiqd@ei41.com ADD: No.98, Xiangjiang Rd, Qingdao Economic&Technological Development Zone,Shandong Post Code:266555...
Page 5 Statement This is the first edition of User Guide of AV2498C Optical Multimeter. version number AV2.714.1291SS1. The contents in this Guide are subject to change without notice. The right to interpret the contents and terms of this Guide belongs to CETC41.
Page 6 In no event shall CETC41 be liable for special, incidental, or consequential damages. The copyright of this Guide belongs to CETC41. No unit and individual shall revise or distort this manual without authorization. The Guide shall not be reproduced and transmitted in any form (including electronic storage, a retrieval system or translation to other languages) for the purpose of profit.
Page 7 Guide is not allowed. If so, degradation of ounc electromagnetic shielding effectiveness and damages of internal components will impact reliability of AV2498C Optical Multimeter. CETC41 offers no free repair even nt： though the warranty period is still valid.
Page 8: Table Of Contents
Table of Contents Chapter OneOverview ………………………………………1 Chapter TwoAppearance and operation instructions....7 Section OneAppearance and keypad ..……………….8 Section TwoOperation Instructions ..………………..17 Chapter ThreeOperating principles and technical specifications ................. 27 Section OneOperating principles ........27 Section Two Technical specifications......29 Chapter FourMaintenance and repair ........
Page 9: Chapter Oneoverview
Chapter One Overview Chapter One Overview 1.1 Multimeter overview AV2498C is a handheld meter, enjoys innovative structure and small size. The optical detector is built inside your convenient usage. The multimeter has a rechargeable battery inside, and dry cell batteries can also be used for field work.
Page 10 Chapter One Overview microcontrollers for control, which is powerful in functions, reliable in performance, competitive in price-performance, small in size and neat in appearance. It is suitable for construction maintenance optical fiber communication projects, and an ideal optical power and optical loss measurement instrument in scientific research, production and mathematics fields.
Page 11 Chapter One Overview AV2498Cmultimeter. The power meter has two types based on different power detecting ranges, as shown in Table 1-1. Table 1-1 Module types of the power meter of AV2498C Optical Multimeter Module Power -70dBm～ -50dBm～ -50dBm～ range +3dBm...
Page 12 Chapter One Overview Multimeter Central 1310nm±20nm 1550nm±20nm wavelengths Output ≥-3dBm ≥-3dBm optical power This Guide contains four chapters. Chapter introduces applications characteristics of AV2498Cmultimeter. Chapter Two introduces appearance and operation instructions of AV2498Cmultimeter.
Page 13 Chapter One Overview Chapter Three introduces fundamental operating principles technical specifications ofAV2498Cmultimeter. Chapter Four introduces maintenance and simple troubleshooting of AV2498Cmultimeter.
Page 14 Chapter One Overview We sincerely hope our products can bring you convenience and efficiency. Please contact us if you encounter any problems during operation.
Page 15: Chapter Twoappearance And Operation Instructions
Chapter Four Maintenance and Repair Chapter Two Structure and Operation Instructions The keypad is used for control and setting and an LCD is for display. Three power sources are available for AV2498Cmultimeter, including a rechargeable battery, a power adapter or any other systems connecting to USB interface for power supply.
Page 16: Section Oneappearance And Keypad
Chapter Four Maintenance and Repair Section One Appearance 1 Front and rear panels and keys illustrations The front and rear panels are shown in Fig. 2-1.
Page 17 Chapter Four Maintenance and Repair Fig. 2-1 Front and rear panels a）【Power】：power switch. The charge indicator is...
Page 18 Chapter Four Maintenance and Repair under the【Power】switch. The battery is charging when the indicator is lit, and finishes charge when the light is out. b）【Zero】：press this key for zero. This function is enabled only when the port protector is closed or light is absent.
Page 19 Chapter Four Maintenance and Repair e）【Display】：to display optical power measurement results and all indications. f ）【 Store 】： press this key to save logarithm measurement results. Press it to exit the review mode. g）【dBm/dB/W】：to switch between measurement modes.
Page 20 S/N/No. Press 【λ】 and 【Data】 to view data by Page Up and Page Down. Press 【Save】 to return AV2498C multimeter back to automatic measurement. Press this key to check the next record during data...
Page 21 Chapter Four Maintenance and Repair i）【Backlight】：press this key to switch on the LCD backlight. Hold it down to enter light source mode and display wavelength of the current light source at the screen bottom. After the light source mode is activated, press this key to adjust wavelengths of light sources following 1550nm and 1310nm,.
Page 22 Chapter Four Maintenance and Repair and the battery compartment. Open the stand to 90 degrees to set the multimeter on a flat surface. The battery compartment shall contain 3 AA dry cell batteries. You can use them for power supply if necessary.
Page 23 Chapter Four Maintenance and Repair 1.2 Side panel Fig. 2-2 Side panel Side panel is shown in Fig. 2-2. The multimeter deploys universal Micro-USB interfaces for power supply and...
Page 24 Chapter Four Maintenance and Repair charge. The input voltage is 5V. You can find one hook on each side of the multimeter to fix the shoulder strap for your convenience.1.3 Top end illustration The top end has an anti-dust cover to protect the fiber connector and the output surface from being contaminated by dust.
Page 25: Section Twooperation Instructions
Chapter Four Maintenance and Repair Section Two Operation Instructions 2.1 Default setting The multimeter contains a built-in rechargeable battery when it comes out of the factory. Please ensure the battery is adequate in case it serves as the only power source. A stabilized DC power adapter is recommended for the battery charge.
Page 26 Chapter Four Maintenance and Repair 2.2.1Turning on and off Hold down the power switch 1 sec to activate self-test mode of AV2498Cmultimeter. It will stay in the following modes after the self-test is accomplished: 1）Range is auto; 2）Measurement mode is in dBm; 3）Wavelength is 1550nm.
Page 27 Chapter Four Maintenance and Repair 2.2.2 Zero function Zero the multimeter prior to measurement of ultralow optical power(For P1:abosulte optical power at the wavelength of 850nmis lower than -54dBm ， absolute optical power at other wavelengths is lower than -60dBm； for P2: absolute optical power at the wavelength of 850nmis lower than -34dBm, absolute optical power at other wavelengths is lower than -40dBm;...
Page 28 LC, SC and ST connectors, change the interface of AV2498C multimeter for convenient operation. Pay special attention to strength and wavelength of the input light to prevent the...
Page 29 Chapter Four Maintenance and Repair 2.2.4Selection of measurement mode Press【λ】 to choose a wavelength and make it identical or close to that of the measured light. As response of photodiode to optical spectrum is not flat, errors may occur when the wavelength of the measured light is different (even greatly) from the chosen wavelength.
Page 30 Chapter Four Maintenance and Repair the unit displayed is dBm. Logarithm value（dBm）＝10 log（measured linearity value/1mW） 2） Relative measurement: press 【dBm/dB/W】 to activate relative measurement (with dB on the screen). Existing power value is stored in the multimeter as a reference value. If the input optical power is changed, displayed value is the discrepancy between the existing value and the logarithm value reading of the reference value.
Page 31 Chapter Four Maintenance and Repair reading contents showed on the LCD in dim light, press to activate the backlight function for your convenience. 2.2.6Light source function: initial status of the light source is off. Hold down to enter the mode of light source setting.
Page 32 Chapter Four Maintenance and Repair multimeter is turned off. 2.2.7Loss measurement 1) Connect the output port of the light source and the input port of the optical power with the fiber jumper. Turn on the light source and preheat it for approx. 30 min. 2）...
Page 33 Chapter Four Maintenance and Repair 2.3 Battery management 2.3.1 Capacity indication The multimeter comes with a built-in rechargeable lithium battery. Dry cell batteries serve as a spare power source. When the multimeter is operating, the internal monitoring circuit supervises the battery capacity, and the LCD shows battery level in real-time.
Page 34 Chapter Four Maintenance and Repair power adapter/portable power—>built-in rechargeable battery—>dry cell batteries. When the rechargeable battery is in use, the dry cell batteries won’t work; when the rechargeable battery capacity is low, the latter will be activated. The rechargeable battery supply will be deactivated and the battery level will disappear from the LCD.
Page 35: Chapter Threeoperating Principles And Technical Specifications
Chapter Four Maintenance and Repair Chapter Three Operating Principles and Technical Specifications Sections One Operating Principles Diagram of operating principles of AV2498Cmultimeter is shown in Fig. 3-1.
Page 36 Chapter Four Maintenance and Repair Fig. 3-1 Diagram of operating principles of AV2498Cmultimeter...
Page 37: Section Two Technical Specifications
Chapter Four Maintenance and Repair Section Two Technical Specifications 1. Operating specifications Operating wavelength: 850nm， 1300nm， 1310nm， 1550nm Power range of module P1: -70dBm～+3dBm Power range of module P2: -50dBm～+26dBm Power range of module P3: -50dBm～+3dBm Power accuracy of module P1:±0.25dB （ -55dBm ～ +3dBm）...
Page 38 Chapter Four Maintenance and Repair +26dBm）， ±0.25dB±10nW(-50dB m～-35dBm) Power accuracy of module P3: ±0.25dB Resolution:0.01/0.001dB Central wavelength light source: 1310±20nm.1550nm±20nm Optical output power:≥-3dBm Short-term stability:±0.05dB/15min 2. Environment adaptability Operating temperature: -10℃～+55℃...
Page 39 Chapter Four Maintenance and Repair Storage temperature: -40℃～+70℃ Operating humidity: 5%～95%RH Operating power: adapter （ input: 100~240V AC, 50～60Hz; output: DC5V, ≥1A）, Rechargeable battery (nominal voltage: 3.7V，≥1000mAh） 3 AA alkaline dry cell batteries （not included in the accessories） 3. Mechanical characteristics: Max.
Page 40 Chapter Four Maintenance and Repair ≤0.5kg Weight: *Note: technical specifications test conditions （temperature:23℃±2℃, humidity: 20%～80% RH ）...
Page 41: Chapter Fourmaintenance And Repair
Chapter Four Maintenance and Repair Chapter Four Maintenance and Repair 1 Matters need attention Proper usage and maintenance of the multimeter can preserve the performance and specifications and prolong its service life. 1.1 Power supply precautions The power supply sources are built-in rechargeable batteries, dry cell batteries or an external power adapter.
Page 42 Chapter Four Maintenance and Repair long time. The power adapter is recommended if the multimeter is going to be used for a long time. The batteries are consumable, not covered by the warranty. a）Application of rechargeable batteries 1） Do not leave the batteries or the multimeter with the batteries inside in super hot environments, such as vehicles.
Page 43 Chapter Four Maintenance and Repair batteries will become exhausted even though the multimeter hasn’t been used for a period of time. b）Low voltage warning When voltage of the rechargeable batteries is low, the sign of batteries level in the top right corner of the LCD will indicate empty power and the multimeter can only work another 10 min.
Page 44 Chapter Four Maintenance and Repair extremely low, the internal voltage is unstable and the power test is inaccurate. The multimeter can only work another 20 min (the light source is not activated) before auto-off. Operation of this multimeter at this time is not recommended.
Page 45 Chapter Four Maintenance and Repair application. 2）Connect the input of the adapter to AC power. 3）Connect the output of the adapter to the power input, which will charge the batteries automatically. 1.2 Test precautions Make sure the connector type of the fiber-optic jumper and that of the input port of optical power test are identical, and are connected firmly.
Page 46 Chapter Four Maintenance and Repair other mechanical damages to the multimeter. b）Protect the optical transmitting and receiving ends from being touched by firm and dirty stuff. Use the anti-dust cover to make them free of dust or erosion by noxious gas when not in use.
Page 47 Chapter Four Maintenance and Repair AV2498C Optical Multimeter precise photoelectric integrated instrument, repair and calibration of which are complicated. a） Return it back to the factory for repair when it encounters breakdowns; b）In case test value deviates a lot or output power value of the light source is comparatively low, please check if the input and output ports are contaminated.
Page 48 Chapter Four Maintenance and Repair Table 4-1 Common breakdowns and troubleshooting No. Breakdowns Reasons Troubleshooting USB drives are Find no USB Reinstall USB drives not correctly devices. correctly. installed. USB devices USB drives are Reinstall USB drives cannot be not correctly correctly.
Page 49 3 Warranty The AV2498C multimeter enjoys 18 months warranty. We offer free repair or replacement for any multimeters defective in quality with the premise that transportation, storage and operation instructions are complied with.
Page 50 Chapter Four Maintenance and Repair For storage of the multimeter, pack it up properly and store it in a dry room with good ventilation at an ambient temperature of -40℃~+70℃. Place it in a dedicated shipping container to avoid severe shocks during transportation.