HP 11890A User's Manual
Contents
1. 1 INPUT OUTPUT 2 OUTPUT INPUT 3 COUPLED Raflection Measurements For reflection measurements the coupler is used as a signal separation device An incident signal is injected into port 1 INPUT OUTPUT and one half or 50 388 of it passes through the coupler exiting at port 2 QUTPUT INPUT the other half is absorbed by the internal termination This signal that passes through is then routed to a device under test DUT where reflected waves may go back into the coupler port 2 OUTPUT INPUT One half or 50 3dB of the reflected signal is coupled to port 3 COUPLED and the other half is output at port 1 INPUT OUTPUT HP 11890 and 11891A Lightwave Couplers 2 COUPLER REFLECTED 4 343 NOMINAL INCIDENT LIGHT INPUT OUTPUT OUTPUT INPUT PORT 2 Figure 1 Coupler Used to Separate Signals Transmission Measurements For transmission measurements the coupler is used as a splitter when an incident signal is injected into port 2 OUTPUT INPUT and is split 3 dB into two separate paths One half the signal is then output at port 1 INPUT OUTPUT and the other half is output at port 3 COUPLED COUPLER Figure 2 Coupler Used as Splitter Typical Application of the Coupler Figure 3 below shows how these couplers are used typical Lightwave Component Analyzer system 11890A and 11891A Lightwave Couplers LIQHTRAVE COMPONENT AMALYZER LIQGHTHAYE RECEIV2. and Service Manual 11890 and 11891A Lightwave Couplers OPERATING AND SERVICE MANUAL HP 11890A and 11891A LIGHTWAVE COUPLERS V ios Printed July 1988 TABLE OF CONTENTS HP 11890A and 11891A Lightwave Couplers General Information Gu k eae 1 Connector Adapter Options va 1 Les da Wie Ce o RS t ad a 1 Reflection Measurements USC 1 Transmission Measurements 2 Typical Application of the Coupler 2 bbe 3 Cleaning Connectors ES 3 Typical Specifications 4 11890A and 11891A Lightwave Cauplers Tast Conditions Using an 8702 System 5 Typical Specification Values 5 Operational cea wen wae eee 6 Recommended Equipment 6 SE VIDE bu bebe e RR 12 PEDE e sex ose R ve os uc 12 Maintenance TEN Vege ui seas 12 Replaceable Parts 12 Table of Contents i GENERAL INFORMATION The 11890A and 11891A Lightwave Couplers provide 3 dB coupling or separation of forward and reverse traveling waves These couplers are designed to be used primarily with an HP Lightwave Component Analyzer although they can be used with other appr
3. Support office Maintenance The only maintenance recommended for the couplers is as follow Inspect and clean the connector adapters inspect and clean the fiber ends l Keep the end cap covers on the coupler when not in use Keep the coupler protected from any extreme changes in environmental conditions including shock and vibration e 6 Replaceable Parts Only the connector adapters ordered by model number be replaced HMS 10 HP HP Model Number 81000 FC PC Mode Number 8100071 DIN 47256 HP Number 8100051 ST HP Mode Number 8100071 HP 11890 and 11891A Lightwave Couplers HP 7928 LIGHTHAYE COMPONENT ANALYZER LIGHTRAYE RECEIVER TERMINATED PORTS ALL LIGHT ABSORBED LIGHTWAYE SOURCE OPTCA CABLE WITH HMS 10 HP CONNECTORS FRESNEL REFLECTION Figure 7 Optical Port Match Test Setup b Begin with the HP 8702A in the PRESET condition Set the HP 8702A to 20 dBm 101 points and 300 Hz IF Bandwidth Press the following keys on the HP 8702A to select the parameters prior to performing the FRESNEL calibration PRESET GUIDED SETUP REFLECTION CONTINUE CONTINUE CONTINUE CONTINUE SOURCE POWER 20 x1 BW 300 x1 STIMULUS MENU NUMBER OF POINTS 101 x1 C Perform a FRESNEL response calibration The test equipmant coupler should have a short cable attached to port 1 the OUTPUT INPUT port The other end of the ca
4. be a clean Fresnel reflection 3 5 reflected power used as the calibration device Press the following keys to perform the calibration so that a measurement reference plane will be established CAL CALIBRATE MENU RESPONSE FRESNEL and after the beep DONE RESPONSE The result of the FRESNEL response calibration should be a flat line at about 14 8 dB Across the band d Measure the optica port match Connect the cable end the measurement reference plane about 14 6 dB to any one of the coupler ports Terminate the ports NOT being measured so that no light will be reflected from them Use the appropriate index matching compound device Use the marker to read the trace value at any desired modulation frequency The signal reflected from the test port should be approximately equal to the typical specification value To test the other two ports be sura to thoroughly and carefully remove the index matching compound from the port to be tested HP 11890A and 11891A Lightwave Couplers 11 12 NOTE if the measured optical match is greatly above the typical specification value check the optical termination and or the connecting cable for end face damage If large interference patterns ripple appear on the trace check the optical termination and or all other optical connections in the test system SERVICE Repair These couplers cannot be repaired in the field They must be returned to Hewiett Packard for any typ
5. for use in tha calculation in step f NOTE Recordand keep these values because they will be used to determine Excess Loss In the next test HP 11890A and 11891A Lightwave Coupters 8 Reconnect the coupler to make transmission measurement of the power out of port 3 COUPLED labeled 4 in the figure Read the measured trace value in dB and label it f Calculate the coupling ratio First convert the dB values into linear values for IN PUT OUTPUT and O4 COUPLED as follows measured 19 Then use the following equation to calculate the coupling ratio using linear values as a percentage value 9 Coupling Ratio rt Oy 100 Compare percentage value to the specification They should be approximately the same TYPICAL EXAMPLE Assume the following measured valuas for ports 2 and 3 0 2 98 dB 0 5058 linear 0 3 25 dB 0 4732 linear 0 5058 EDEB T D 4732 0 5168 or 51 6 EXCESS LOSS TEST Excess loss is determined by injecting an input signal into the Ende port 1 and comparing the measured power out of ports 2 and 3 Port 3 Port 2 Port 1 NOTE Refer to and use the same test parameters and test setup of figure 5 above Coupling Ratio tast Ussthe same values tor Ports 2 and 3 and obtained by performing the Coupling Ratio test above b Using the linear values add the values measured at port 2 INPUT OUTPUT and port 3 COUPLE
6. 023 RD 6 0 1 EA 63 00 EA 63 00 5592 1 2 OPEN SEAL 5M 7 0 1 EA NSO5 76 05 EA 76 SO5 5 8 OPEN SEAL 5M 8 0 1 EA 1 84 00 EA 84 00 5071 1 2 OPEN SEAL 5M 9 1 EA GU94411959 24 00 EA 24 00 STRETCH FILM 12 X 1500 REG 10 0 1 EA NA171500 31 50 EA 31 50 STRETCH FILM 17 X1500 16MICRON 11 0 36 EA SH00099 98 EA 35 28 BOX SEALING TAPE HP100 2 12 0 1 GU9540005 4 45 EA 4 45 TAPE REINFORCED GUM 70 450 13 0 1 2 61 50 61 50 ACKING LIST T 3 5 1 2 X 7 14 0 12 CAO E e 1 99 23 88 20 20 GLASS CLEANER 15 0 ATTN RICHARD CARIOR CLOSING STAPLES ARE 10 TO A CASE 16 0 40 CASES TO A PALLET I AM WORKING ON PALLET PRICE FOR YOU 17 0 OR A FREE TOOL WITH A PURCHASE OF PALLET QUANITIES SUB TOTAL 716 86 SALES TAX 58 07 TOTAL QUOTATION 774 93 E S ORDER ACKNOWLEDGEMENT Sealed Air Corporation Sealed Air Corporatior M 52255 ffice City of Industry EPD Park 80 Bast 1 Z Tel 800 356 7338 Saddle Brock 07663 gt Y New Jersey Tel 201 791 7600 HG ZSEEECTRONICS Sold to 112974 ship to 112974 Order Date 12 23 2003 Special Instructions 100039697 INSTAPAK 15518 CUBE 12 24 2003 434 00000 USD 434 00 USD 2 80 100039700 66971 INSTAPAK 40WB 1501 CUBE BA 12 24 2003 364 00000 USD 9 USD 2 80 1095 02 SOLVENOOL INSTAPAE SOLVENT 1 GAL EA 12 24 2003 USD 18 0000 USD Total Value TOTAL Please check the above detail ca
7. 95 23748 KEG WASH PHOTO RESIST SPINNER CONTROLLER HOY 1 EC104 R485 23421 KEG WASH PHOTO RESIST SPINNER CONTROLLER EDY 1 8C101 R485 23119 KEG WASH PHOTO RESIST SPINNER NO CONTROLLER HDY i ECI01 R B85 23330 KHG WASH PHOTO RESIST SEES AND Quo aj GONTROLLER HDY 1 101 485 36110 KHG WASH PHOTO RESIST SPINNER AND CONTROLLER HDY 1 ECiO1D R790 60461 KEG WASH PHOTO RESIST SPINNER CONTROLLER EDY 1 PM101D R790 70580 KHG WASH PHOTO RESIST SPINNER CONTROLLER Anes og 42344 OO Ave ten 1250 00 Boy Manes 9 00 Qu eM ton ye 5 0 boy Page 1 All Fasteners Direct LLC KR KR RR RK RR EE PAGE 1 12 23 03 3843 North 36th Avenue QUOTATION ONLY QUOTE 1 000519 Phoenix AZ 85019 3701 RRR KR k Ck ck kck ck ch Kk k ck k ck k TERMS COD PHONE 602 272 6894 FAX 602 272 3327 SOLD TO SHIP TO 4HZ ELECTRONICS MHZ ELECTRONICS 2801 E WASHINGTON 2801 E WASHINGTON PHOENIX AZ 85034 PHOENIX AZ 85034 CUSTOMER SLM P O NUMBER SHIP VIA EXPIRES F O B 4HZEO01 003 SALES REP 05 31 04 DESTINATION LINE QUANTITY U M ITEM DESCRIPTION UNIT PRICE U M EXTENSION ds 10 EA JK400145 6 04 EA 60 40 JK561 15K C5 8 2 5M 2 0 10 EA JK40 3 6 68 66 80 j JK561 18K C3 4 2 5M 3 0 100 EA GU261223A 62 EA 62 00 STEEL STRAP 1 2 X 023 RD 4 0 100 EA GU273423A 62 62 00 STEEL STRAP 3 4 X 023 RD 5 0 100 EA GU265823A 62 EA 62 00 STEEL STRAP 5 8 X
8. D Tha value for Port 1 does not have to be measured because itis normalized out by performing the response THRU measurement calibration Therefore its linear value is equal to 1 Thus the Excess Loss equation becomes C2 linear linear EL linear 1 HP 11890A and 11891A Lightwave Couplers Convert the linear Excess Loss value into dB and compare the results to the typical specification Excess Loss dB 10 log linear Excess Loss TYPICAL EXAMPLE Assuming the example values from the previous test 0 2 96 dB 0 5058 linear 0 3 25 dB 0 4732 linear EL linear 0 5058 0 4732 0 9790 EL 88 10 LOG 0 9790 0 092208 3 ISOLATION TEST isolation is determined using the coupler as a signal separation device An incident signal 50 MHz modulated light 15 injected into the INPUT OUTPUT port and the power coming out of the cou PLED signal port is measured and compared to the incident signal a Connect the system as shown in the figure below using only HMS 10 HP connectors The optical cables are connected using barrel or adapter for performing a THRU response calibration NP 8 LI BAT HAVE COMPONENT AWALTZER eee LISHTHRYE RECEIVER 50 Uz ew RF 1 1 car o HMS 10 HP CONNECTOR COUPLED t Vua a SHORT OPTICAL CABLE TERMINATED ue m qe p De am m mo LL UGHT PORT 2 PORT 1 ABSORBED QNPUT OUTPUT OUTPU
9. ER SOURCE LIGHTHAYE RECEIVER Ex FE LIGHTHRVE Figure 3 Typical Lightwave Coupler Test Setup NOTE The 8702A User s Guide HP Part No 08702 90008 has examples of reflection ments using these couplers Connectors Always make connections in a consistent and repeatable manner and keep the connectors clean and free from contamination The HMS 10 HP Option 011 connector adapters provide the optimum performance for making reflection measurements Cleaning Connectors The coupier connector ports consist of both a metal connector adapter that separates from the coupler and a fiber end face portion fiber ferrule and threaded fitting that is stationary The connec tor adapter is used to mate two connectors The fiber end face consists of a metal portion that receives the connector adapter and 2 portion that holds the fiber in place The connector adapters should be cleaned separately from the fiber end faces The figure below shows the stationary portion of a coupler port HP 11890 and 11891 Lightwave Couplers 3 FIBER METAL THREADED FERRULE METAL PORTION Figure 4 Coupler Port Connector Without Connector Adapter Connector adapters can be cleaned with non corrosive alcohol or a liquid freon product Use a lint freo swab or lint free cloth to clean the connector and blow dry it with clean compressed air to re
10. IPPED SHIPPED VIA unb E SALESEERSON d go 2 22 25 STA SHIP SOLD TO 57 EVP NET DM EI 2 NW Lt ye Lo a 4 9762165 M 22677 M 6 122907 T dL KS Mec BAT AULT LM WAL bp Jx GAS 7222 gt ValueTronics International ONO EN ASE 1675 Cambridge Dr DEE i Elgin 3 847 468 8258 847 717 6121 The following number must appear on all related correspondence shipping papers and invoices P O NUMBER 17388 Seller Ship To Mhz Electronics ValueTronics International 2801 Washington 1675 Cambridge Dr Phoenix AZ 85034 Elgin 60123 ATTN Richard Finkelstein SUBSTITUTI ONS BACK ORDERS ALLOWED TAX EXEMPT SHIP VIA ON ACCOUNT DATE TERMS eme omo ASSET DESCRIPTION IUNIT PRICE TOTAL 1 60263 500 11 977 00 511 977 00 0 00 50 00 0 00 SUBTOTAL 11 977 00 SALES TAX DO NOT INSURE FOR ANY AMOUNT S UNDER 5 000 00 s OTHER TOTAL 11 977 00 1 Please notify us immediately If you are unable to ship as Special instructions 8 2 UPS ACCOUNT 50 112 Complete with all standard accessories amp operating manual 3 FED 1605 17654 Sai ne a et ie lla E Test Equipment List MHZ Electronics Not Sold Items Only 12 23 03 Mnf Part Serial _ WH item partner Description Specification Loc Loc HDY 1 101 4
11. T INPUT Figure 6 Isolation Test Setup HP 11890 and 11891A Lightwave Couplers b Begin with the 8702 in its PRESET condition Then set the HP 8702A output power to 20 dBm at 50 MHz Also set the number of points to 3 points and set the IF Bandwidth to 10 Hz Press the following keys on the HP 8702A to select the parameters and perform the calibration PRESET GUIDED SETUP CONTINUE CONTINUE CONTINUE START 50 M u STOP 50 M u CONTINUE SOURCE POWER 20 x1 CONTINUE STIMULUS MENU NUMBER OF POINTS 3 x1 RESPONSE AVG iF BW 10 x1 CAL CALIBRATE MENU RESPONSE and with a THRU connection press THRU and after the beep RESPONSE Here the result of a successful calibration should be flat line across the CRT at 0 dB Connect a short cable HP 11888A or 11887 Interconnect Cable HMS 10 HP connectors about one to three meters long to port 1 OUTPUT INPUT of the coupler Terminates the cable end so that all light will be absorbed at that port You can use the proper index matching compound or device NOTE terminating cable must have a known good connector surface at the coupier end A defective connector or termination will degrade the measurement d Measure the power out of port 3 COUPLED Read the trace value on the HP 8702A by pressing MKR Compare the results to the specification It should be approximately equal to the typical specif
12. ble should be a clean Fresnel reflection 3 5 reflected power used as the calibration device Press the following keys to perform the calibration so that a measurement reference plane will be established CAL CALIBRATE MENU RESPONSE FRESNEL and after the beep DONE RESPONSE The result of the FRESNEL response calibration should be a flat line at about 14 8 dB across the band d Measure the optical port match Connect the cable end the measurement reference plane cf about 14 6 dB to any one of the coupler ports Terminate the ports NOT being measured so that no light will be reflected from them Use the appropriate index matching compound or devica Use the marker to read the trace value at any desired modulation frequency The signal reflected from the test port should be approximately equal to the typical specification value To test the other two ports be sure to thoroughly and carefully remove the index matching compound from the port to be tested HP 11890A and 11891A Lightwave Couplers 11 Dah es 92 C171 D 05416 E leoni 0092 1 10010 SVB 0010 lO EE 4 oo 8 gt c 27 5 gt 072 db Bu I Packing List 72801 Washington Street gt PHOENIX ARIZONA 85034 1513 NE CE 602 681 9100 MN No 21451 SEE ORDER INSTRUCTIONS FOR RETURN INFORMATION uj STONER ORDER DATE SH
13. e of repair In addition their specifications and the warranty become invalid if thay are opened or if any repair is attempted by unauthorized personnel For any repair contact your nearest HP Sales and Support office Maintenance The only maintenance recommended for the couplers is as follow inspect and clean the connector adapters Inspect and clean the fiber ends Keep the end cap covers on the coupler when not in use Keep the coupler protected from any extrame changes in environmental conditions including shock and vibration 69 Replaceable Parts i Only the connector adapters ordered by model number can be replaced HMS 10 HP HP Model Number 81000A1 FC PC HP Mods Number 8100051 DIN 47256 HP Mods Number 8100051 ST HP Model Number 1 HP 118904 and 11891A Lightwave Couplers 2 NOTE If the measured optical match is greatly above the typical specification value check the optical termination and or the connecting cable for end face damage If large interference patterns ripple appear on the trace check the optical termination and or all other optical connections in the test system SERVICE Repair These couplers cannot be repaired in the field They must be returned to Hewlett Packard for any type of repair In addition their specifications and the warranty become invalid if they are opened or if any repair is attempted by unauthorized personnel For any repair contact your nearast HP Sales and
14. g HP 8702 System Modulation frequency on the lightwave carrier temperature is 25 5 degrees C only HMS 1 0 optical connectors all ports reflection measurement referenced to a Fresnel reflection 3 5 reflected optical power at connector end face and the carrier wavelength is 1308 or 1550 7 20 nano meaters Typical Specification Values 4 COUPLING RATIO 11890A 50 typical 10 11891A 50 typical 20 Coupling ratio is a percentage measurement describes the percentage of signal power which passes through the coupler and appears at the coupled port when the coupier is used as a power splitter For example 50 coupling r tio means that the signal power at the COUPLED port is 50 or one half of the total output power assuming the signal is injected in the OUTPUT INPUT port As an equation coupling ratio CR is defined as the signal power appearing at the respactive ports Port 3 3 Port 2 or using the coupler labels COUPLED 7 6 0 iNPUT O 2 EXCESS LOSS HP 11890A 0 5 dB typical 11891 0 5 dB typical Excess loss describes how much power is lost when a signal passes through or is separated by the coupler ideally no power should be lost and all power should appear at one port or another However some small amount of power will be lostin the coupler as light leaving the fiber cora and entering the cladding For example 0 5 dB excess
15. ication value i 4 OPTICAL PORT MATCH Optical port match is determined by measuring the power reflected from a coupler optical port When making this measurement the other two ports must be proparly terminated with an index matching compound or device The test is made over the entire modulation frequency span of the HP 8702 300 kHz to 3 GHz or 3 MHz to 6 GHz for option 005 a Connect the system as shown in the figure below using only HMS 10 HP connectors The tes equipment coupler like all of the connecting cables should have known good connector interfaces Do not connect the DUT coupler yet 10 HP 11890 and 118914 Lightwave Couplers HF 7028 1 53 COHPONEMT ANALYZER LIGHTHRYE RECEIVER TERMINATED PORTS ALL UGHT ABSORBED LIGHTURYE SOURCE CAL HMS 10 HP CONNECTORS Figure 7 Optical Port Match Test Setup b Begin with the HP 8702A in the PRESET condition Set the HP 8702A to 20 dBm 101 points and 300 Hz IF Bandwidth Prass the following keys on the HP 8702A to selectthe parameters prior to performing the FRESNEL calibration PRESET GUIDED SETUP REFLECTION CONTINUE CONTINUE CONTINUE CONTINUE SOURCE POWEA 20 x1 AVG BW 300 x1 STIMULUS MENU NUMBER OF POINTS 101 1 FRESNEL response calibration The test equipment coupler should have a short cabia attached to port 1 the OUTPUT INPUT port The other end of the cable should
16. loss means that 0 5 dB of an incident signal will not appear at any port therefore if an incident signal of 10 dBm were input and the coupler were used as a splitter only 9 5 dBm total output power could be measured at the outputs As an equation excess loss EL is defined at the signal power appearing as the respective ports is Por 3 Port 2 EL Fort 1 or using the coupler labsis COUPLED INPUT OUTPUT EL OUTPUT NPUT HP 11890A and 118914 Lightwave Couplers 3 ISOLATION HF 11890A 45 dB typical HP 11891 40 dB typical Isolation is a relative measure of the directional properties of the coupler This relative valua dB describes how much of the incident or transmitted signa leaks over to tha reflected signal path COUPLED For example 50 dB of isolation means that tha measured coupled signal value inciudes 50 dB of transmitted signal NOTE Isolation is sometimes called Crosstalk although there are some subtle differences In the definitions addition the term Directivity is sometimes used to describe how well an optical coupler directs the signal although this term does not include the loss through the coupler OPTICAL PORT MATCH HP 118904 34 dB typical HP 11891 34 dB typical Optical port match is a relative measure of the amount of signal that is reflected from the optical input port of the coupler For example a 36 dB match means that the coupler will reflect lt 36 dB of the va
17. lue of the corresponding input signal OPERATIONAL TESTS Thess operational tests can be used to determine if the coupler single mode or multimode is operat ing at its specified typical values Perform these tests at regular intervals as desired or one year and Keep a Copy of the results for futura reference in case service is required Recommended Equipment 46 9999 5 509589 HP Lightwave Component Analyzer HP 8702A HP Lightwave Source HP 83400A or HP 834014 HP Lightwave Receiver HP 83410A Cabies 2 HP 11885A 11887A Interconnect Cable Kits HP Optical Coupler for Optica Port Match only 81000A Diamond Connector Adapter for all ports option 011 HP 11889 RF interface Kit 2 HMS 10 HP Diamond barrel or adapter for THRU connections Optical termination or absorber index matching compound NOTE Any type of light absorbing device with gt 37 dB of return loss can be used as an optical termination instead of index matching compounds 1 COUPLING RATIO TEST in this test the coupler is used as a splitter where each signal should measure about 3 dB from the calibrated reference of 0 dB Coupling ratio is calculated using the measured power con verted to linear at each port Port 3 Port 3 2 Perform the steps below to obtain the measured signal values at each port HP 11890A and 11891A Lightwave Couplers Connect the system as shown below using only HMS 10 HP connect
18. move any loose particles afterwards Any debris left inside the adapter barrel can cause inaccurate meas urements and possibly damage tha fiber end Keep the protective cover on the connector when not in use The threaded metal portion that holds the fiber end face should be carefully cleaned in the same manner as the connector adapter For fibers HP recommends a fiber optic cleaning kit HP Mode Number 154754 that usas an adhesive tape to remove loose particles after cleaning the fiber ends This kit comes with cleaning instructions Fiber ends are sometimes cleaned using a non corrosive or non abrasive cleaner alcohol or liquid freon is used to clean fiber ends a clean non abrasive swab or cloth shouid be used Afterward clean compressed air should be used to blow dry the enc NOTE If an index matching compound gel oil etc is used with non contacting connector adapt ers consult the manufacturer for information about cleaning agents TYPICAL SPECIFICATIONS There are four typical specifications tor these coupiers Coupling Ratio Excess Loss Isolation Optical Port Match Typical Specifications describe the typical level of performance that can be expected from a product These values are derived from testing various units at the factory and determining typical values The operational tests described after this section can be used to check the typical values HP 118904 and 11891A Lightwave Couplers Test Conditions Usin
19. opriate equipment addition they ruggediy packaged to provide maximum protection This document applies to two different couplers The only difference between them is that one is single mode fiber and the other is a multimode fiber The optical connector interfaces ordered as options are the same on both couplers Below is a description of each coupler 11890 Single Mode Fiber 9 um core 125 um cladding HP 11891A Multimode Fiber 50 um core 125 um cladding Connector Adapter Options Thess couplers must be ordered with or more of the following connector adapter types Option 011 HP 81000 HMS 10 HP Option 012 HP 81000FI FC PC Option 013 HP 8100051 DIN 47258 Option 014 HP 81000VI ST These options are connector adapters usad at the optical input or output ports One end of the connector adapter is HMS 10 HP and it is connected to one of the three coupler ports each port is designed to recaive this type of connector The other end of the connector adapter is the specific connector type option it attaches to your cable or device In addition many other connector types can be used with the appropriate adapters and patch cords cables APPLICATION For reflection measurements these optical couplers are typically used to separate a transmitted signal from a reflected signal For transmission measurements they can be used as signal splitters The ports are designed and labeled as follows
20. ors The optical cables connected using a barrel or adapter for perfarming a THRU response calibration HP 8 LIGHTHAVE COMPOMENT RHALYZER MAL a LIGKTHRYE RECEIVER LIGHTHAYE SOURCE CAL THRU OPTICAL CABLE WITH PORT 3e0x MMS 10 HP CONNECTOR COUPLED i PORT PORT 250 OUTPUT NPUT NPUT OUTPUT Figure 5 Coupling Ratio and Excess Loss Test Setup b Begin with the HP 87024 in its PRESET condition Then set the HP 8702A RF output power to 5 dBm at 50 MHz CW Prass the following keys on the HP 8702 to select the parameters and perform a THRU responsa calibration PRESET GUIDED SETUP CONTINUE CONTINUE CONTINUE START 50 M u STOP 50 M u CONTINUE SOURCE POWER 5 x1 CONTINUE CAL TYPE RESPONSE CONTINUE THRU and after the beep DONE RESPONSE the result of a successful calibration should be a flat lins across the CRT at 0 dB Insert the coupler between tne two optical cables such that port 1 OUTPUT INPUT receives the source optical input signal and port 2 INPUT OUTPUT transmits the signal to the receiver d With the coupler inserted as the DUT the trace value on the CRT is the measured value Press MKR to read the value This is a transmission measurement of the power out of the port 2 INPUT OUTPUT labeled in the figure Record the HP 87024 trace value in dB and label it as
21. retully and notify us if any changes are required This transaction is governed by the CONDITIONS OF SALE No other terms and conditions shall apply except as specficr herein Thank you for your order Page 1 of 1
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