Symmetricom 5087B Wideband Distribution Amplifier
Contents
1. output 3 failed 1 1 output 2 failed 0 1 output 1 failed Understanding Alarm Output The Symmetricom 5087B automatically publishes alarms to the CNR port as they occur The alarms appear in the format ALARMabcde where abcde is the summary status of the input and output signals The format of the alarm status is identical to the S command response defined in Table 2 on page 23 Example ALARM00003 This example shows that outputs 1 and 2 have active faults 24 Symmetricom 5087B Operations and Maintenance Manual Rev E Monitoring the Symmetricom 5087B 3 Checking Model Number and Software Version Both commands are case sensitive You do not need to type a carriage return or line feed To check the model number e Type I The system returns I5087B 00 r n To check the software version e Type V The system returns Vxx r n where xx is the software version Example V00 Symmetricom 5087B Operations and Maintenance Manual Rev E 25 3 Monitoring the Symmetricom 5087B 26 Symmetricom 5087B Operations and Maintenance Manual Rev E Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual 4 Troubleshooting the Symmetricom 5087B Replacing Fuses 28 Verifying Operational Problems 29 Perform all of the following procedures before returning the unit for service For the Customer Assistance Center contact e Worldwide Main Number 1 408 428 7907 e USA Canada Latin America incl2. 30 Symmetricom 5087B Operations and Maintenance Manual Rev E Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual A Specifications Directives 33 Electrical Specifications 34 Environmental Specifications 36 Physical Specifications 37 oe 31 Symmetricom A Specifications 32 EC Declaration of Conformity In accordance with EN 45014 1998 We Timing Solutions Corporation Of 4775 Walnut Drive Suite 1B Boulder CO 80301 USA declare that Equipment Wideband Distribution Amplifier Model Number Symmetricom 5087B Product Options None in accordance with the following Directives 73 23 EEC The Low Voltage Directive and its amending directives 89 336 EEC The Electromagnetic Compatibility Directive and its amending directives has been designed and manufactured to the following specifications Safety EN61010 1 2001 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements EMC EN61326 1 2001 Electrical Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements EN 55011 Class A Radiated Emissions I hereby declare that the equipment named above has been designed to comply with the relevant sections of the above referenced specifications The unit complies with all essential requirements of the Directives For technical assistance contact the factory Signed by N
3. Assigning a Static IP Address 18 Cleaning 20 a 13 Symmetricom 2 Installing and Setting Up the Symmetricom 5087B Installing the Symmetricom 5087B The Symmetricom 5087B ships ready for installation into a standard 19 48 3 cm rack Accessories included CD ROM documentation P N 05087 13402 Power cord Rear brackets with attaching hardware Replacement kit P N 05087 67002 Required for installation North American or European IEC power cord One or the other will be supplied with the unit 1 Phillips screwdriver Customer supplied RG223 cables with BNC connectors from source and to next devices in system Customer supplied LAN cable for network connection RJ 45 Rack mounting screws Screwdriver for the rack mount screws as needed Since the unit does not have a AC mains power switch both the appliance inlet connector and the plug on the detachable power supply cord are considered to be suitable disconnect means for disconnecting the unit from the AC mains supply If the rear of the unit is not accessible after installation in the instrument rack you must provide a suitable external AC disconnect means for the unit To set up the Symmetricom 5087B 1 Unpack carefully and inspect the Symmetricom 5087B 2 Check for physical damage 14 If you observe physical damage immediately contact Symmetricom Inc and the carrier We recommend saving the shipping container for submitting any necessary
4. 70 VA 0 98 PF 10 VAR IEC 60320 sheet C14 18 AWG 0 75 mm minimum 250V 2A T 5x20 mm part number 2110 0973 e Number One e Impedance 50 Q e Amplitude 0 3 to 3 Vrms 2 6 to 22 6 dBm e Frequency Range 1 0 10 0 MHz e Signal Type Sine wave e Voltage Standing Wave Ration VSWR lt 1 5 e Damage Level 24 dBm e Input Status Front Panel Indicator Level detect minimum 0 3 Vrms e Input 1 BNC e Output 12 BNC e Alarm 1 BNC e Network RJ 45 e 1 Hz 110 dBc Hz e 10 Hz 123 dBc Hz e 100 Hz 128 dBc Hz e 1 kHz 144 dBc Hz e 10 kHz 150 dBc Hz e Number 12 e Amplitude Adjustable 0 75 to 3 Vrms 10 5 to 22 6 dBm into 50 Q e Frequency Range 1 0 10 0 MHz e Signal Type Sine wave e SWR lt 1 5 e 1 BNC connector e Open collector TTL output with 10 kohm pull up to 5 VDC e Active low e Ethernet 10Base T e RJ 45 connector Symmetricom 5087B Operations and Maintenance Manual Rev E Specifications A Table 3 Electrical specifications Continued Item Specification Harmonic Distortion input and lt 40 dBc output gt 1 Vrms Spurious input and output lt 80 dBc 10 Hz to 50 kHz gt 1 Vrms Isolation Output to output lt 104 dBc typical Output isolation is measured by injecting 900 Hz signal 0 5Vpp and 20us wide into an output port and measuring the associated phase noise spur at 900 Hz offset on adjacent output ports and input port Output to input lt 100d
5. Do not spray or use too much liquid when cleaning the unit Liquid can enter the unit and damage sensitive electronic components 20 Symmetricom 5087B Operations and Maintenance Manual Rev E Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual 3 Monitoring the Symmetricom 5087B Accessing the System 22 Checking System Status 23 Understanding Alarm Output 24 21 Symmetricom 3 Monitoring the Symmetricom 5087B Accessing the System You access the Symmetricom 5087B system remotely by connecting to its Command And Response CNR Port through the Ethernet connection The CNR port Port 10001 which uses TCP IP lets users input commands displays results of the commands and publishes alarms as they occur When you Telnet to the CNR port the system does not display a prompt 22 Symmetricom 5087B Operations and Maintenance Manual Rev E Monitoring the Symmetricom 5087B 3 Checking System Status You can check the system status and the model and software version remotely If you have connected a monitor to the open collector ALARM output connector that device will also receive alarm information Checking Alarms and Input Frequency The system can report current alarms and latched alarms To check system status e Type S You do not need to type a carriage return or line feed The system returns Sabcde fghij r n where e abcde is current status e fghij is latched alarms and
6. If not avoided the hazard can cause death serious injury or substantial damage to equipment Caution indicates a potential hazard If not avoided the hazard can cause moderate injury or moderate damage to equipment Hot surface CE marking This symbol attests compliance to applicable European Directives Fuse Signal input Signal output Alarm signal out LAN port Chassis ground Earth terminal symbol used to indicate an earth ground connection to chassis Symmetricom 5087B Operations and Maintenance Manual Rev E 1 Introduction About This Manual This manual tells you how to install set up monitor and troubleshoot the Symmetricom 5087B Chapter 1 Introduction explains symbols that appear in the manual and on the unit as well as documentation conventions The chapter also briefly describes the Symmetricom 5087B Chapter 2 Installing and Setting Up the Symmetricom 5087B contains important safety information and describes how to install the Symmetricom 5087B set the gain and assign a fixed IP address Chapter 3 Monitoring the Symmetricom 5087B describes how to monitor alarms Chapter 4 Troubleshooting the Symmetricom 5087B describes how to replace fuses and verify operational problems Appendix A Specifications contains the detailed specifications for the Symmetricom 5087B Symmetricom 5087B Operations and Maintenance Manual Rev E Conventions Table 1 Con
7. claims to the carrier Symmetricom 5087B Operations and Maintenance Manual Rev E Installing and Setting Up the Symmetricom 5087B 2 3 Optional Install the unit in a 19 inch rack Two rack mount brackets are included with the unit to provide rear chassis support when installed in a rack Use the three 10 32 x 0 5 screws on each side of the unit to attach the brackets On short depth racks shorten these rails as necessary to ensure that they do not cover the holes forward of the brackets rail mounting slots You can break off the rails after the first set of slots by bending at the point where there is a perpendicular slot and notches in the side of the bracket 4 Plug the female end of the power cord into the male IEC 320 plug on the rear of each power supply 5 Plug the male end of each power cord into a 100 240 VAC 50 60 Hz power source Ensure that this power supply cord is connected to a properly grounded mains receptacle 6 Connect the input signal cables from a 1 to 10 MHz source to the INPUT A BNC connector on the rear panel 7 Connect up to 12 cables to the OUTPUT BNC connectors on the rear panel to supply users with a copy of the input signal 8 Optional Connect a TTL input device to the ALARM BNC connector on the rear panel of the Symmetricom 5087B 9 Optional Connect a LAN cable to the Ethernet port on the rear panel of the Symmetricom 5087B Symmetricom 5087B Operations and Maintenance Manual Rev E
8. port on the rear panel enables you to remotely monitor the status of the input and output signals When the unit detects a failure it immediately sends an alarm to the Ethernet port The LEDs on the front panel show the status of the input signal each of the 12 output signals and the inputs Figure shows the instrument s front panel and Figure 2 shows the rear panel Power Green when power is on Alarm Red when alarm condition 10 A B and Input Select Lit Use the LED shows active input tenti t t Red when not receiving an OUTPUT LEDs green De ee input signal B input is during normal operation of to each LED to set always off output signals All red when unit has no input signal on the active channel Figure 1 Front panel Symmetricom 5087B Operations and Maintenance Manual Rev E Introduction 1 S a aAlBBRBEEREI 11 H 100 240V 50 60 Hz 1 3A _ 2AT 250V me AC POWER ETHERNET PORT 1 INPUT A Connect 1 ALARM Open collector OUTPUTS 12 BNC connector RJ 45 connector to 10 MHz source output device connectors Figure 2 Rear panel Symmetricom 5087B Operations and Maintenance Manual Rev E 11 1 Introduction 12 Symmetricom 5087B Operations and Maintenance Manual Rev E Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual 2 Installing and Setting Up the Symmetricom 5087B Installing the Symmetricom 5087B 14 Adjusting the Output Level 17
9. 15 2 Installing and Setting Up the Symmetricom 5087B For information about configuring the network connection see Assigning a Static IP Address on page 18 16 Symmetricom 5087B Operations and Maintenance Manual Rev E Installing and Setting Up the Symmetricom 5087B Adjusting the Output Level You can adjust the output level to a value between 0 75 Vrms and 3 Vrms Required equipment e Oscilloscope e Small flat head screwdriver To adjust the output level 1 Connect an oscilloscope to the output you want to change 2 Using a small flat head screwdriver turn the potentiometer next to the LED for the output until the oscilloscope shows the output level you want Symmetricom 5087B Operations and Maintenance Manual Rev E 17 2 Installing and Setting Up the Symmetricom 5087B Assigning a Static IP Address 18 The Symmetricom 5087B contains a Lantronix Xport Ethernet to RS 232 converter which provides the instrument s Ethernet connection The Symmetricom 5087B ships from the factory with a default IP address of 0 0 0 0 which enables DHCP If the network has a DHCP server it will assign each unit an IP address gateway address and subnet mask when the unit starts up To monitor multiple Symmetricom 5087Bs remotely through their Ethernet connections you must assign each unit a fixed IP address You identify which unit is the source of an alarm by its IP address Follow the instructions in this se
10. Be Symmetricom 5087B Operations and Maintenance Manual Rev E 35 A Specifications Environmental Specifications CAUTION This unit is for INDOOR USE ONLY It is not sealed to prevent moisture from entering the enclosure e Pollution Degree 2 per EN61010 1 e Installation Over Voltage Category II for transient over voltages per EN 61010 1 e Equipment suitable for continuous operation Table 4 lists the environmental specifications for the Symmetricom 5087B Table 4 Environmental specifications Item Temperature Relative Humidity Altitude In Use 0 C to 50 C 10 to 85 non condensing 4 000 meters 15 000 ft Storage 62 C to 75 C 5 to 95 non condensing Transportation 62 C to 75 C 5 to 95 non condensing 36 Symmetricom 5087B Operations and Maintenance Manual Rev E Specifications A Physical Specifications Table 5 lists the physical specifications for the Symmetricom 5087B Table 5 Physical specifications Item Specification Width 450 mm Standard 19 inch rack mount Height 90 mm Standard 2U rack Depth 370 mm excluding connectors Weight Weight 6 2 kg 6 5 kg with optional 020 or 021 Symmetricom 5087B Operations and Maintenance Manual Rev E 37 A Specifications 38 Symmetricom 5087B Operations and Maintenance Manual Rev E n r CNR DHCP ESD LED LSB MSB PDF PWA RF TTL Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual B Gloss
11. Rev E Installing and Setting Up the Symmetricom 5087B 2 The hardware device number and IP address appear in the Assign IP Address dialog box 6 Type the new IP address and click OK The new IP address appears in the Lantronix DevicelInstaller window 7 Test the IP address by pinging the instrument s Xport on the Lantronix Xport Installer window Click the Ping icon or select Ping Device on the Tools menu The Ping Device window should show the IP address of the instrument s Xport device and it should show successful replies if the IP address has been configured correctly 8 Exit the browser To assign the static IP address using Telnet 1 Telnet to the assigned address port 9999 2 Press Enter within five seconds to enter the setup mode 3 Select Option 0 4 Set the IP address and follow the on screen instructions to save the setting 5 Telnet to the new IP address port 10001 6 Typel You do not need to type a carriage return or line feed The system returns 15087B 00 r n where the 00 is the hardware version and turns on the front panel input LEDs for two seconds before returning to normal operation If you see these responses you know you are communicating with the unit Symmetricom 5087B Operations and Maintenance Manual Rev E 19 2 Installing and Setting Up the Symmetricom 5087B Cleaning Clean the main chassis with a soft cloth dampened with a mild soap and water solution CAUTION
12. Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual Part Number 05087 13402 Revision E November 2010 a Symmetricom Notices Symmetricom Inc 2004 2010 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or transla tion into a foreign language without prior agreement and written consent from Sym metricom Inc as governed by United States and international copyright laws Manual Part Number 05087 13402 Edition Rev E November 2010 www symmetricom com support symmetricom com Phone Worldwide Main Number 1 408 428 7907 USA toll free 1 888 367 7966 1 888 FOR SYMM Warranty The material contained in this doc ument is provided as is and is subject to being changed without notice in future editions Further to the maximum extent permitted by applicable law Symmetricom disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a particular purpose Symmetricom shall not be liable for errors or for incidental or consequential dam ages in connection with the furnish ing use or performance of this document or of any information contained herein Should Symmet ricom and the user have a separate written agreement with warranty terms covering the mat
13. ame S R Stein Position President Done at Boulder Colorado U S A on 27 January 2005 Symmetricom 5087B Operations and Maintenance Manual Rev E Specifications A Directives The Symmetricom 5087B unit is designed to comply with the following directives and standards Electromagnetic Compatibility 89 336 EEC Council Directive on the approximation of the laws of the Member States relating to electromagnetic compatibility EMC Directive with amendments Safety 73 23 EEC Council Directive on the harmonization of the laws of the Member States relating to electronic devices for use within certain voltage limits LVD Low Voltage Directive with amendments Standards e EN 61010 1 e EN 61326 1 Class A For more information refer to the letter of conformance US or the declaration of conformity EU accompanying the product Symmetricom 5087B Operations and Maintenance Manual Rev E 33 A Specifications Electrical Specifications Table 3 Electrical specifications 34 Item Table 3 lists the electrical specifications for the Symmetricom 5087B Specification Protection Class Power Input Power Consumption Power Inlet Type Power Supply Cord Set Power Mains Fuse 2 Signal Input Connectors SSB Phase Noise 5 10 MHz Signal Output Alarm Port Remote Interface Class I Grounded Type 100 to 240 V 50 60 Hz Fluctuations not to exceed 10 of nominal supply voltage STD 70 W
14. ary Line feed Carriage return Command and Response Dynamic Host Configuration Protocol electrostatic discharge light emitting diode least significant bit most significant bit portable document format printed wiring assembly radio frequency transistor transistor logic ith 3 39 Symmetricom B Glossary 40 Symmetricom 5087B Operations and Maintenance Manual Rev E Index A accessing Symmetricom 5087B system 22 alarms checking 23 understanding 24 assigning gateway address 18 IP address 18 subnet mask 18 C cables connecting 14 required 14 CE marking symbol 7 checking alarms 23 input frequency 23 model number 25 software version 25 system status 23 cleaning a Symmetricom 5087B 20 Command And Response Port explained 22 commands system 23 connections Ethernet 10 14 input power 10 14 input signal 10 input signals 14 output signal 10 output signals 14 conventions typographic 9 D Devicelnstaller software 18 directives electromagnetic compatibility 33 safety 33 E electromagnetic compatibility directive 33 Ethernet connecting 14 22 port 10 18 22 F fuse replacing 28 symbol 7 G gateway address assigning 18 I input connector 10 LEDs 10 input frequency checking 23 input plug symbol 7 input signals connecting 14 installing the Symmetricom 5087B 14 IP address assigning 18 L LAN connecting 14 LAN port s
15. changed status since the last status request Both abcde and fghij are hexadecimal numbers with each bit position representing one output LSB farthest right is output 1 MSB is the input Bits 0 15 are latched alarms Bits 16 19 are change in status bits Latched alarms remain active in the current status field and latched status field until the problem is corrected Changed status bits are cleared upon next status request Example S00001 00001 This example shows an output 1 failure that is active and occurred since the last status request Table 2 defines each status or alarm bit position Table 2 Status or alarm binary codes Status or alarm Bit position Bit value and description character position aorf 19 and 18 Remote control bits 1 1 Not available 17 and 16 Front panel switch control bits 1 1 Not available Symmetricom 5087B Operations and Maintenance Manual Rev E 23 3 Monitoring the Symmetricom 5087B Table 2 Status or alarm binary codes Status or alarm Bit position Bit value and description character position borg 15 0 Channel A active input 1 Channel B active input 14 1 Cannot lock to input B 13 1 Cannot lock to input A 12 1 Autoswitch occurred corh 11 1 output 12 failed 10 1 output 11 failed 9 1 output 10 failed 8 1 output 9 failed dori 7 1 output 8 failed 6 1 output 7 failed 5 1 output 6 failed 4 1 output 5 failed eorj 3 1 output 4 failed 2 1
16. ction to assign a unit s IP address using either the Lantronix DeviceInstaller software or Telnet port 9999 The Devicelnstaller software is available only by downloading from the Lantronix Web site Go to http www lantronix com For more detailed information about the Devicelnstaller software see the Xport User Manual Section 3 3 discusses several different ways that you can assign IP addresses Chapter 4 explains how to permanently configure the IP address You can download the Xport User Manual from the Lantronix Web site as an Adobe Acrobat PDF file Go to http www lantronix com If you move the Symmetricom 5087B to a different network hub after setting up the static IP address the host computer may not be able to make a connection You may need to release the IP address lease on your operating system To assign the static IP address using the Lantronix DeviceInstaller software 1 Obtain the following network information from your system administrator for each Symmetricom 5087B you want to install IP Address Subnet Mask Gateway 2 Connect a Windows PC to the same local subnet as the Symmetricom 5087B 3 Install and start the Lantronix Devicelnstaller software 4 Click the Search Network icon and search for XPORT devices connected to the network then click Save and Exit 5 Click the IP icon or select Assign IP Address on the Tools menu Symmetricom 5087B Operations and Maintenance Manual
17. erial in this document that conflict with these terms the warranty terms in the separate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or subcontract Software is delivered and licensed as Commercial computer soft ware as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Symmetricom s standard com mercial license terms and non DOD Departments and Agencies of the U S Government will receive no greater than Restricted Rights as defined in FAR 52 227 19 c 1 2 June 1987 U S Gov ernment users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data Safety Notices 07 4 OM U KODNI A CAUTION notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly per formed or adhered to could result in damage to the product or loss of important data Do not pr
18. oceed beyond a CAUTION notice until the indicated conditions are fully understood and met WARNING A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indi cated conditions are fully understood and met Contents 1 Introduction Safety Requirements 6 Symbols 7 About This Manual 8 Conventions 9 Symmetricom 5087B Overview 10 2 Installing and Setting Up the Symmetricom 5087B Installing the Symmetricom 5087B 14 To set up the Symmetricom 5087B 14 Adjusting the Output Level 17 To adjust the output level 17 Assigning a Static IP Address 18 To assign the static IP address using the Lantronix DeviceInstaller software 18 To assign the static IP address using Telnet 19 Cleaning 20 3 Monitoring the Symmetricom 5087B Accessing the System 22 Checking System Status 23 Checking Alarms and Input Frequency 23 Understanding Alarm Output 24 Checking Model Number and Software Version 25 4 Troubleshooting the Symmetricom 5087B Replacing Fuses 28 To replace a fuse 28 Verifying Operational Problems 29 Symmetricom 5087B Operations and Maintenance Manual Rev E ii A Specifications B Glossary Directives 33 Electromagnetic Compatibility 89 336 EEC 33 Safety 73 23 EEC 33 Standards 33 Electrical Specifications 34 Envir
19. onmental Specifications 36 Physical Specifications 37 Symmetricom 5087B Operations and Maintenance Manual Rev E Symmetricom 5087B Wideband Distribution Amplifier Operations and Maintenance Manual 1 Introduction Symbols 7 About This Manual 8 Conventions 9 Symmetricom 5087B Overview 10 Front panel 10 Rear panel 11 PERE Symmetricom 1 Introduction Safety Requirements e Do not attempt to install or operate this equipment if you have not first acquired proper training e Ensure that all cables are properly connected The power cord must be easy to remove from the back e Verify that input line voltage and current capacity are within specifications before turning on the unit e Do not place power supply cords or other cables on top of unit or against heatsinks e Operating and maintenance personnel must receive proper training before installing or maintaining electrical equipment 6 Symmetricom 5087B Operations and Maintenance Manual Rev E Symbols Symbol Introduction These symbols icons appear throughout the manual as well as on the unit itself Definition 1 gt gt Vo a 4 On the unit this symbol means Caution Refer to User Manual This symbol identifies a hazard The label next to the symbol indicates how serious the hazard is Danger indicates an imminent hazard If not avoided the hazard will cause death or serious injury Warning indicates a potential hazard
20. uding Caribbean Pacific Rim including Asia Australia and New Zealand 1 408 428 7907 e USA toll free 1 888 367 7966 1 888 FOR SYMM e Europe Middle East amp Africa 49 700 32886435 e www symmetricom com The Symmetricom 5087B does not have any user serviceable parts eee 27 Symmetricom 4 Troubleshooting the Symmetricom 5087B Replacing Fuses If you know that a local event caused blown fuses throughout a rack you can replace the fuses in each Symmetricom 5087B power entry module Required for this procedure e Small flat head screwdriver e Replacement fuse for a standard IEC 320 power entry module with fuse 5 x 20 mm l amp 250 volt fuse P N 2110 0973 To replace a fuse 1 Disconnect the power cable from the back of the Symmetricom 5087B 2 Using a small screwdriver open the fuse cover on the back of the Symmetricom 5087B 3 Replace the old fuses as necessary 4 Close the fuse cover 5 Reconnect the power cable to the back of the Symmetricom 5087B 28 Symmetricom 5087B Operations and Maintenance Manual Rev E Troubleshooting the Symmetricom 5087B 4 Verifying Operational Problems If the unit does not operate properly after you have verified that e the correct power is applied to the rear of the Symmetricom 5087B and e the fuses are good return the unit to Symmetricom Inc for repair Symmetricom 5087B Operations and Maintenance Manual Rev E 29 4 Troubleshooting the Symmetricom 5087B
21. ventions Convention Introduction 1 This manual uses several typographical conventions to help explain how to use the Symmetricom 5087B Definition Bold Italics Note Words in bold show e Buttons and icons to click e Menu options to select e Commands to type e Non variable information displayed in response to commands Words in italics show e Names of windows and dialog boxes e Variable information displayed in response to commands This symbol means the following information is a note that gives you important information that may affect how you use the Symmetricom 5087B Symmetricom 5087B Operations and Maintenance Manual Rev E 9 1 Introduction Symmetricom 5087B Overview The Symmetricom 5087B Wideband Distribution Amplifier distributes multiple copies of a precise frequency throughout a research and development laboratory manufacturing facility calibration lab or anywhere a precise frequency standard is required Its input accepts 1 to 10 MHz sine waves at amplitudes of 0 3 to 3 0 Vrms and uses automatic gain control to maintain the set output level when the input signal level varies The Symmetricom 5087B produces low noise copies of the input signal on each of its 12 outputs Output amplitude can be adjusted from 0 75 to 3 Vrms via a potentiometer screw accessible from the front panel to compensate for cable loss The Symmetricom 5087B uses a 2U high 19 inch rack mount chassis An Ethernet
22. ymbol 7 Lantronix Devicelnstaller software 18 Lantronix Xport See Xport LEDs input 10 output 10 power 10 M model number checking 25 monitoring a Symmetricom 5087B 22 Symmetricom 5087B Operations and Maintenance Manual Rev E N network connecting 14 O operational problems verifying 29 output connectors 10 LEDs 10 output signals connecting 14 P panels front 10 rear 10 ports Command And Response 22 Ethernet 22 power connecting 14 connector 10 LED 10 procedures troubleshooting 27 publishing alarms 24 R replacing afuse 28 S safety directive 33 software version checking 25 specifications electrical 34 environment 36 physical 37 standards applicable to Symmetricom 5087B 33 subnet mask assigning 18 symbols 7 41 Index CE marking 7 fuse 7 input plug 7 LAN port 7 Symmetricom 5087B accessing 22 alarms 24 cleaning 20 command interface 23 directives 33 front panel 10 installing 14 monitoring 22 overview 10 rear panel 10 required cables 14 specifications 34 standards 33 unpacking 14 system commands 23 system status checking 23 T troubleshooting procedures 27 typographic conventions 9 U unpacking the Symmetricom 5087B 14 W warning 7 symbol 7 X Xport Ethernet to RS 232 converter 18 user manual 18 42 Symmetricom 5087B Operations and Maintenance Manual Rev E
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