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Фрагмент инструкции
n To access hidden keypad, pull up display cover. Select POWER, Source, then: n To set reference, push Abs/Rel and hold Set Ref for 3 seconds (3 buzzer sounds). n To display reference, hold Abs/Rel, so Ref flashes. n To stop / start display update, push Hold. n If a test tone is detected, meter will display Hz. AUTOTEST OPERATION ¦ No user action is required for meter to enter Autotest mode. n Autotest: Push Autotest on source and wait a few seconds. n Can also push Autotest on meter for faster lock-on. ¦ To display one wavelength only, on the power meter push the left side of -/+ and again for the other wavelength. Push right side of -/+ (twice) to exit. ¦ Autotest remains for >8 seconds after signal loss, to allow quick connection change. n To e x i t autotest, remove test lead or turn off source for >8 seconds. MANUAL OPERATION ¦ To turn on and select wavelength, push: POWER, Power Meter, -/+. n To display linear mode, push dBm/W. ¦ To display max/min values, push MAX/MIN repeatedly. Hold MAX/MIN to reset (3 buzzer sounds). . MEMORY n Enter Power Meter or Autotest modes first n While in Autotest mode, it is only possible to STORE. ¦ To clear all memory, push both RECALL and CANCEL together for 3 seconds. clr will display. n To store in next location, push STORE. n To change next store location, push SELECT -/+, SET. n To recall, push RECALL -/+ to scroll through data. n To exit memory display, push CANCEL. ADDITIONAL AUTOTEST MEMORY OPERATION n To read or cancel memory, first exit Autotest mode, and enter Power Meter mode. n Autotest memory: use -/+ to scroll wavelengths. n INTRODUCTION AND A P P L I C AT I O N S N3970A OPTICAL POWER METER Congratulations on your purchase of this instrument, which has been engineered to provide the best possible reliability, convenience and performance. To get the best use from your equipment and ensure its safe operation, please spend a few minutes to read this manual. n CO N T E N T S Service and Support Introduction & applications Safety Summary Battery and external power Optical connector How to use: Getting started and turning on Autotest operation Power meter operation Storing & recalling readings RS232 interface 3 4-5 6-7 8 9-10 11-12 13-14 15 16-17 18 Care of your instrument Accuracy considerations Calibration, maintenance & instrument re t u rn s Specifications - Definition of terms Specifications and ordering information Performance test Cleaning information Cleaning procedures Disclaimer & warranty Notes 19 20-21 22-24 25 26-28 29-38 39-40 41 42 43-44 BEFORE READING FURTHER, OPEN THE CONTROL PANEL PICTURE AT THE BACK OF THE MANUAL n S E RVICE AND SUPPORT Any adjustment, maintenance, or repair of this product must be p e rf o rmed by qualified personnel. Contact your customer Australia 1 800 629 485 (613) 9272 0749 (Fax) engineer through your local Agilent Technologies Serv i c e New Zealand 0800 738 378 Center. You can find a list of local service representatives on the 64 4 495 8950 (Fax) Web at: Asia-Pacific (852) 3197 7777 If you do not have access to the Internet, one of these centers (852) 2506 9284 (Fax) can direct you to your nearest representative: United States 1 800 452 4844 Canada 1 877 894 4414 (905) 206 4120 (Fax) Europe (31 20) 547 2323 (31 20) 547 2390 (Fax) Japan (81) 426 56 7832 (81) 426 56 7840 (Fax) Latin America (305) 269 7500 (305) 269 7599 (Fax) N3970A UM-1 n IN T R O D U C T I O N A N D AP P L I C AT I O N S The N3970A Optical Power Meter is used for field or laboratory testing of fiber optic systems at typically 850, 1300, 1310 and 1550 nm. It features superb measurement confidence, ease of use and reduced cost of ownership, and is for use by installers, technicians and engineers. Superior measurement confidence is achieved with a unique Total Uncertainty specification over the full temperature , measurement and connector range, and a NATA traceable calibration certificate. The display hold and back light facilities help acquire readings, and the flexible memory helps record your results Autotest mode enables automatic l (wavelength) detection and attenuation measurement (in combination with an Autotest source). A single or dual l source and meter in Autotest mode automatically measure single or dual l attenuation in one direction. High operational reliability & availability is achieved with 250 hour battery life, 3 year recommended re-calibration cycle, negligible warm up and no range-changing delays. Dark current offset is not required. An external power input is also provided. The combination of features enables reduced equipment inventory, simpler training, shorter procedures, lower skill levels and direct labour savings in many situations, combining to give lower cost of ownership. The innovative optical connector port provides drop protection during use, and is dust protected by a snap on cover. The interchangeable optical connector system is very versatile, and easily disassembled for cleaning. ...