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SEFRAM 7940

Optical Power Meter

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Summary of Contents for 7940 Series

Page 1: ...1 SEFRAM 7940 Optical Power Meter ...

Page 2: ...aintenance 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 M 7940 A 00 08 2011 ...

Page 3: ...on and high performance in application makes it an ideal tool for optical fiber network SEFRAM 7940 Specifications Wavelength 850nm 980nm 1300nm 1310 nm 1490nm 1550nm Measurement Range 50 to 26dBm 2 Specifications Model SEFRAM 7940 Wavelength Range nm 1 800 1600 Detector Type InGaAs MeasurementRange dBm 2 50 26 Uncertainty 3 0 15dB Accuracy Linear 0 1 or Nonlinear 0 01dBm Operating Temperature C 1...

Page 4: ...Power Measurement Range The maximum and minimum range in which the Power Meter can work properly 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 1 3 Protective Holster 1 4 1 5V AA Battery 3 5 Cotton Swabs 1 ...

Page 5: ... and so on 2 ON OFF Key Press the key to turn the unit on off 3 dB Key To test the power value under certain wavelength 4 ZERO Key Press the key for auto zero 5 λ Key To switch the current operating wavelength between 850nm 980nm 1300nm 1310nm 1550nm 6 LIGHT Key To turn the background light on off 1 LCD 3 dB 6 Backlight 5 λ 2 ON OFF 1 LCD 4 Zero 7 HOLD ...

Page 6: ...ncluding Linear and nonlinear value 5 3 Relative power measurement 1 Select the wavelength to be measured 2 Under Absolute power measurement mode connect to the light to be tested 3 Press dB key then current power value is stored as a reference value in dB unit At the same time it also display the current absolute power value and current relative value is 0dB 4 Connect to another beam of light to ...

Page 7: ... 0 05 dB Store Zero Switch Wavelength λ Return to the Factory Setting λ Zero Notes If any errors or mistakes caused by the user self calibration operation please press theλ Zero synchronously under the user mode to go back to the factory setting 1 Auto off Press LIGHT dB key to turn on the auto off function The auto off symbol will be displayed on the top right The unit will be turn off automatica...

Page 8: ...FRAM 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 Press the dB key the reading 0 00dB will be displayed on the screen The tested power values will be set to the reference value Step 2 Optical Loss Measurement Keep the emit...

Page 9: ...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 5 Please use clean cotton to clean the sensor surface clean it in clockwise direction carefully 6 If does not need to use for a long time please take out the battery ...

Page 10: ...e unit Battery is weak Others Turn on the unit again Change battery Insensitive display in LCD Light interface is polluted broken Display locked Check connector carefully and clean sensor s interface 8 Change Battery 8 1 If you find battery is weak while operating it please immediately turn the unit off and change a new battery ...

Page 11: ... at its sole discretion replace repair or refund the purchase price of the product This warranty is limited to defects in workmanship and materials and does not cover damage from accident acts of God neglect contamination misuse or abnormal conditions of operation or handling To establish if the product is covered by the warranty please provides date of purchase and delivery note to SEFRAM with th...

Page 12: ...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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