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Digital Lightwave ASA 312, Руководство по калибровке

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ASA 312

® 

NETWORK 

INFORMATION COMPUTER

™

CALIBRATION MANUAL 

April 2002

Document No. RF 002331D

Содержание ASA 312

Страница 1: ...r Florida 33760 United States T 727 442 6677 F 727 442 5660 Toll Free 800 548 9283 or 877 275 3445 info lightwave com http www lightwave com ASA 312 NETWORK INFORMATION COMPUTER CALIBRATION MANUAL Apr...

Страница 2: ...tes and or in other countries Digital Lightwave Lightwave Management Network Information Computer Network Access Agent Optical Access Agent Anywhere Anytime AnyBit and Technology to Reach Inside the L...

Страница 3: ...to repack the unit using commercially available materials Use a strong shipping container similar to the original ASA 312 ship ping box Verify that the substitute container is rated at 350 lbs per squ...

Страница 4: ...duct is properly grounded Do Not Operate in Hazardous Conditions To avoid injury or fire hazard do not operate this instrument in wet damp or other hazardous condition Do not operate this instrument i...

Страница 5: ...Draft 1 DLI Proprietary Information 4 15 02 v Serial No Model No Label The following label is located on the rear of the ASA 312...

Страница 6: ...CDRH report accession number for the ASA 312 is 9612361 Laser Wavelength Class Typical Normal Operation Output Power OC 1 12 1310 nm Class 1 30 W OC 1 12 1550 nm Class 1 29 W OC 48 1310 nm Class 1 25...

Страница 7: ...STSX 1 Neg Peak 1 5 Optical Power Range 1 5 Optical Power 1 5 OC48 Optical Power 1 5 Save Calibration 1 5 Change Password 1 5 Before You Calibrate the ASA 312 1 5 2 DS1 and Frequency Adjustment Calib...

Страница 8: ...mV Peak Adjustment 3 5 DS3 High Settings 3 6 Required Equipment 3 6 Hardware Setup 3 6 ASA 312 Settings 3 7 Oscilloscope Settings 3 7 Calibrating DS3 High 3 8 4 STSX 1 Calibration STSX 1 Positive and...

Страница 9: ...15 02 ix Calibrating Optical Power for OC 48 5 8 OC 48 Reference Value 5 8 First OC 48 Optical Power Measurement 5 8 Second OC 48 Optical Power Measurement 5 9 6 Saving Calibration Values and Passwor...

Страница 10: ...Contents Document No RF 002331D x Draft 1 DLI Proprietary Information 4 15 02...

Страница 11: ...ide This guide is organized as follows Chapter Description Chapter 1 ASA 312 Calibration Overview This chapter pro vides a brief description of the calibration process Chapter 2 DS1 and Frequency Cali...

Страница 12: ...For example If you have a single laser ASA 312 this concludes the Optical Calibration for an ASA 312 with OC 1 OC 3 or OC 12 optical interfaces This typeface indicates a command name menu selection b...

Страница 13: ...o calibration commands After calibration is complete a system password is required to save the new calibration parameters This feature prevents unauthorized or unintentional calibration changes to the...

Страница 14: ...312 Saving the new measurement The remainder of this document describes the equipment required to complete a proper calibration of the ASA 312 and the procedures for setting up recording and saving m...

Страница 15: ...ghtwave uses an HP53131A Universal Counter A function generator Digital Lightwave uses a Tektronics CFG253 3 MHz Function Generator or equivalent device A digital oscilloscope Digital Lightwave uses a...

Страница 16: ...the commands associated with the CAL button Frequency Adj 0 255 Set the internal time base of the ASA 312 Frequency Adjustment values range from 0 to 255 and are entered using a Touch Screen keypad Re...

Страница 17: ...eypad to enter this value OC48 Optical Power Sets the optical power measurements for the OC 48 hardware This command is available only if the OC 48 option is installed Refer to Chapter 5 for informati...

Страница 18: ...ASA 312 Calibration Overview Document No RF 002331D 1 6 Draft 1 DLI Proprietary Information 4 15 02...

Страница 19: ...cy 128 is the center frequency and 255 is the highest frequency Review the procedures in this section before attempting to adjust the ASA 312 s frequency Required Equipment The following equipment is...

Страница 20: ...s ready for Frequency Adjustment calibration Continue to the next section for adjustment procedures Adjusting the Frequency The following procedures require user input to both the frequency counter an...

Страница 21: ...y is within the range of 772 KHz 1 ppm 5 After adjusting the frequency you can save the new frequency value using the procedures described in Chapter 6 Saving Calibration Values and Passwords or you c...

Страница 22: ...the BNC T connector 5 Attach the BNC to Bantam cable s Bantam connector to the DS1 RX bantam jack 6 Set the function generator s frequency output to 772 KHz 10 KHz Figure 2 2 DS1 Calibration Setup AS...

Страница 23: ...32 and Range 64 To set DS1 Range 1 1 Set the oscilloscope s Volts Division to 1 V NOTE For subsequent DS1 Range settings use the corresponding value that appears in the Oscilloscope V Div column in Ta...

Страница 24: ...Enter to accept the new value 7 Press the DS1 Neg Peak command and use the Touch Screen keypad to enter the measured DS1 negative peak adjustment value Press Enter to accept the new value This conclu...

Страница 25: ...2 ft 75 ohm coaxial cables with male BNC connectors Hardware Setup The following describes how to attach cables to the measuring devices and how to configure these devices for DS3 Terminated calibrat...

Страница 26: ...ming command and select Unframed 5 Press the Pattern command and select All Ones 6 Press the Trnsmt Function Group button 7 Press the Signal Level command and select DSX 3 Oscilloscope Settings Config...

Страница 27: ...er the measured DS3 negative peak adjustment value Press Enter to accept the new value This concludes DS3 Terminated calibration After performing this calibration you can save the new values using the...

Страница 28: ...mited 0V vertical offset Measuring frequency maximum peak voltage and minimum peak voltage Acquisition set to average 8 samples Calibrating DS3 Monitor The following procedures describe how to Attach...

Страница 29: ...unction Group button Press the CAL button 4 Press the DS3 Pos Peak command and use the Touch Screen keypad to enter the measured DS3 positive peak adjustment value Press Enter to accept the new value...

Страница 30: ...ale BNC connectors Hardware Setup The following describes how to attach cables to the measuring devices and how to configure these devices for DS3 High calibration refer to Figure 3 3 To attach cables...

Страница 31: ...he Framing command and select Unframed 5 Press the Pattern command and select All Ones 6 Press the Trnsmt Function Group button 7 Press the Signal Level command and select DS3 High Oscilloscope Settin...

Страница 32: ...eak command and use the Touch Screen keypad to enter the measured DS3 positive peak adjustment value 4 Press Enter to accept the new value 5 Press the DS3 Neg Peak command and use the Touch Screen key...

Страница 33: ...measuring devices and how to configure these devices for STSX 1 calibration To attach cables between the ASA 312 and the oscilloscope refer to Figure 4 1 1 Make sure that the ASA 312 and oscilloscope...

Страница 34: ...to average 8 samples Calibrating STSX 1 The following procedures describe how to perform STSX 1 calibration using an ASA 312 and oscilloscope 1 Using the oscilloscope measure and record the average p...

Страница 35: ...fiber optics cleaning kit to clean the fiber optic ports on the ASA 312 the optical power meter the optical attenuator and the fiber cables Dirty optical ports will effect optical measurements Optical...

Страница 36: ...cal Transmit output is produced by a Class 1 laser device You should never under any circumstances look into an unterminated fiber Always turn the Laser off when a fiber is unterminated After connecti...

Страница 37: ...fiber optic ports and fiber cables are clean an optical power level less than 8 0 dBm may be caused by dirty ports and cables Reconnect the fiber optic cables and make sure that you have a firm connec...

Страница 38: ...al port and replace the dustcap WARNING The ASA 312 s optical Transmit output is produced by a Class 1 laser device You should never under any circumstances look into an unterminated fiber Always turn...

Страница 39: ...a fiber is unterminated After connecting the fiber turn the Laser on 3 Remove the dustcap from the OC 1 3 12 RX optical port and connect the second fiber optic cable to the ASA 312 s OC 1 3 12 RX opti...

Страница 40: ...inated After connecting the fiber turn the Laser on 3 Remove the dustcap from the OC 1 3 12 RX optical port and connect the second fiber optic cable to the ASA 312 s OC 1 3 12 RX optical port This pro...

Страница 41: ...C 1 3 12 RX port 4 From the ASA 312 Touch Screen press the Optical Power Range command and select 4 5 Press the Optical Power command and use the Touch Screen keypad to enter the value recorded earlie...

Страница 42: ...Screen Press the Settings Function Group button Press CAL 3 Press the OC48 Optical Power command The Touch Screen keypad appears 4 Enter 99 0 and press Enter First OC 48 Optical Power Measurement To e...

Страница 43: ...rcumstances look into an unterminated fiber Always turn the Laser off when a fiber is unterminated After connecting the fiber turn the Laser on 2 Adjust the attenuator so that the meter reads 1 0 dBm...

Страница 44: ...Optical Power Calibration Document No RF002331D 5 10...

Страница 45: ...is CALIBRATE You can change the system password as described in the Changing the Password section The new calibration values are set as the ASA 312 s default values Changing the Password To avoid acc...

Страница 46: ...ent password is correct a prompt for the new system password appears Press OK If the password is incorrect the message Invalid Password appears and the password function is aborted 5 A Touch Screen ke...

Страница 47: ...RX TX FC PC ST PC or SC FC type connectors for SONET OC 48 optical signals 3 10BaseT 8 pin modular jack for Ethernet connection 9 DataCom Drop Insert 37 pin female RS449 connector for D1 through D12 O...

Страница 48: ...taCom Drop Insert 37 pin female RS449 connector for D1 through D12 Overhead bytes 15 OC 1 3 12 RX TX FC PC ST PC or SC FC type connectors for SONET optical signals 4 DS1 RX TX Bantam connectors for DS...

Страница 49: ...Peak 1 5 STSX 1 Pos Peak 1 5 D DS1 calibration 2 3 2 6 DS3 High 3 6 3 8 DS3 monitor calibration 3 3 3 5 DS3 terminated calibration 3 1 3 8 E equipment list 1 2 1 3 2 1 2 3 3 1 3 3 3 6 4 1 5 1 1 1 F f...

Страница 50: ...Index Document No RF OO2331D Index 2 Draft 1 DLI Proprietary Information 4 15 02 saving calibration values 6 1 STSX 1 calibration 4 2...

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