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Summary of Contents for SEFRAM 7940 Series
- Page 1 SEFRAM 7940 Optical Power Meter...
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Page 2: Table Of Contents
Content 1. Overview………………………………….……….…………03 2. Specifications………………………...…………………….03 3. Standard Packages…………………….…………………..04 4. Components Guide………………...……………………...05 5. Operation and Notes………………...…………………….06 6. Maintenance…………...……………..…………………….09 7. Troubleshooting……………………………………….…..10 8. Changing battery…………………………………….…….10 9. Warranty and Servicing…………………………….…….11 ………………………………………………………………………………………… The information contained in this document is assumed to be correct and current. The manufacturer is not responsible for errors of omissions and reserves the right to change specifications at any time without notice. -
Page 3: Overview
1. Overview SEFRAM has designed the SEFRAM 7940 series optical power meter to meet the high demand. It can be used for the absolute power measurement and relative measurement of the link loss in dB. Its compact size, friendly operation interface, broad power measurement range, high precision and brand-new user automatic calibration function and high performance in application makes it an ideal tool for optical fiber network. -
Page 4: Standard Packages
3. Uncertainty: Difference between two measurement results that were tested by Power Meter and another Standard Power Meter respectively. 3. Standard packages 1. SEFRAM 7940 Handheld Power Meter……………….. 1 2. Manual………………………………………………….… 3. Protective Holster………………………………………… 1 4. 1.5V AA Battery…………………………………………..3... -
Page 5: Components Guide
4. Components Guide (1) LCD (1) LCD (2) ON/OFF (6) Backlight (4) Zero λ (3) dB (7) HOLD LCD: The LCD screen display the measurement tested in dB, dBm, mW, uW, nW unit; the selected wavelength; the current operating situation and so on. -
Page 6: Operation And Notes
(4) Connect to another beam of light to be tested, display the current relative power value and absolute power value under tested. 5.4 Special function SEFRAM 7940 has 3 kinds of working mode: (1) Factory Mode (2) User Mode (3) Working Mode... - Page 7 5.4.1 Factory Mode: The factory is responsible for the test and calibration 5.4.2 User Mode: Press the λ + Light key synchronously, and then enter the User mode. A sign "T" will be displayed at the left side of the display. Press theλ...
- Page 8 SEFRAM 7940 get the power measurement value. This value should be close to the one that light source (emitting source) set. If it has wide disparity, please make sure the fiber connection is clean properly else replace another jumpers.
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Page 9: Maintenance
2. Keep using one type of adapter to avoid excess loss from different connectors. 3. Please use dust proof cap for protection to avoid begin scratched or contaminated when SEFRAM 7940 not in operation. 4. Light interface is sensitive, please carefully plug in and pull out the connectors. -
Page 10: Troubleshooting
7. Trouble shooting Description Problem Method Faint LCD display Battery is weak Change battery No display after Battery is Turn on the unit turning on the unit weak/Others again/Change battery Light interface is Check connector Insensitive display in polluted/ carefully and clean broken/Display sensor’s interface locked... -
Page 11: Warranty And Servicing
9．Warranty and Servicing In case of failure or problem, please contact SEFRAM after sales department to send back your instrument. 9.1 2 years Warranty for SEFRAM 7940 Handheld Power Meter SEFRAM warrants that every Handheld Power Meter 7940 will be free from defects in material and workmanship for a period of 24 months. - Page 12 SEFRAM 32, rue Edouard MARTEL BP 55 F42009 SAINT-ETIENNE Cedex 2 Tel : +33 4 77 59 01 01 Fax : +33 4 77 57 23 23 Mail : sales@sefram.fr Web : www.sefram.fr...
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