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Symmetricom 58502A Manual - Artisan Technology Group

1. Output N to BNC BNC 50 Feedthrough 7 Connector Cable HP 10100C 1250 0780 Bnei Input Outputs 58502A AorB 1 12 Distribution Amplifier 0000000000009 Figure 2 6 Input Level Response Test Setup 5 Set the RMS voltmeter to 3V Full Scale Range 6 Starting with Output 1 verify that the RMS voltage on each of the twelve Outputs is from 0 707 to 1 12 Vrms 7 Record the reading of each output channel on the Performance Tests portion of the 58502A Performance Test Record in the Test 1 section located on page 2 14 2 12 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Performance Tests Test 2 15 dBm Input Level 1 Using the same test setup see Figure 2 6 and the RMS voltmeter still set to 3V Full Scale Range adjust the signal generator to LEVEL 15 dBm 2 Verify that the RMS voltage on each of the twelve Outputs is from 0 707 to 1 12 Vrms 3 Record the reading of each output channel on the Performance Tests portion of the 58502A Performance Test Record in the Test 2 section located on page 2 15 This completes the performance tests User s Guid
2. D OO O OW Ua 9 F l Input s 58502A Distribution ps232 Amplifier Port DTE Figure 1 3 Inputs and Outputs Connections For Your System Terminal or PC is Optional 1 10 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Using Commands to Control Key Functions Examples Using Commands to Control Key Functions Examples Overview This section provides you with specific program command examples that perform particular tasks Enter the examples at the scpi gt prompt exactly as they appear to avoid creating an error If you accidentally make a mistake e enter the CLS command to clear the error queue then e re enter the correct command string at the scpi gt prompt There are four types of signal distribution that can be used with the 58502A e Distribution of one input A or B e Distribution of two inputs A and B e Distribution of input A with internal backup oscillator OCXO e Distribution of the internal backup oscillator OCXO only Each of the above require a different set of commands to be used with this instrument See the subsection Setup Commands for the Different Distribution Applications starting on page 1 12 There are tasks that are common to all distribution ap
3. Output 1 1 to 12 2 to 1 Amplifiers Output 2 Switch and Isolators Output 12 5 5 Vdc ower Supply 15 Vdc Module 15 Vdc Figure 5 1 Simplified Block Diagram User s Guide 5 3 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 5 Functional Description Functional Block Description of the 58502A Controller Block This block provides remote instrument management via commands transferred through the RS 232 serial port It also provides hardware output alarm signals via the Alarm Status connector that go active when the controller block lights the front panel system status alarm indicator Alarm inputs are received and processed by the controller block The block consists of a microprocessor and associated support circuitry that together facilitate control of all internal housekeeping command actions diagnostic and system status instrument functions All instrument functions are controlled and or monitored by this block Panel LEDs Block This block consists of hardware that provides visual indicators for the operating status of instrument power system alarm inputs A and B and distribution amplifier channels 1 through 12 During normal operation the power all output status and one or both input system status indicators should illuminate If an effective input signal is lost absent on both inputs A and B then both input A
4. ALARM STATUS J Figure 3 2 Alarm Inputs Alarm Inputs Always connect the input A input device to pin 6 of the ALARM STATUS connector and connect the input B input device to pin 7 Do NOT use or ground pin 8 When an alarm input from the device connected to input A is received by the 58502A the 58502A switches to using the backup signal input B as the source signal and automatically reflects the alarm in its own alarm outputs and routes this information to pin 6 of the ALARM STATUS connector Conversely similar actions occur when an alarm input from the device connected to input B is received by the 58502A except the alarm information is routed to pin 7 of the ALARM STATUS connector The INP ALARM query returns the alarm status of frequency sources connected to pins 6 and 7 See Chapter 4 Command Reference for details on this query The following paragraphs provide an example on how the alarm system works Let s say you connected the HP 5071A Primary Frequency Standard signal to input A and connected the 58503A GPS Receiver signal to input B Then you connected the HP 5071A status output to pin 6 of the ALARM STATUS port and the 58503A alarm output to pin 7 The common or return for these signals should be connected to pin 9 ground You need to make a special cable for these connections If the HP 5071A fails and sends an alarm the 58502A will automatically switch to the backup input signal from th
5. A rtisan Artisan Technology Group is your source for quality TecmoogyGroup new and certified used pre owned equipment FAST SHIPPING AND SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT DELIVERY Experienced engineers and technicians on staff Sell your excess underutilized and idle used equipment TENS OF THOUSANDS OF at our full service in house repair center We also offer credit for buy backs and trade ins IN STOCK ITEMS www artisantg com WeBuyEquipment 7 EQUIPMENT DEMOS HUNDREDS OF InstraV ea REMOTE INSPECTION LOOKING FOR MORE INFORMATION MANUFACTURERS Remotely inspect equipment before purchasing with Visit us on the web at www artisantg com 7 for more our interactive website at www instraview com information on price quotations drivers technical LEASING MONTHLY specifications manuals and documentation RENTALS ITAR CERTIFIED D a gaa tia Contact us 888 88 SOURCE sales artisantg com www artisantg com 097 58502 01 Symmetricom Issue 1 Mar 00 58502A Broadband Distribution Amplifier Users Guide Copyright 2000 Symmetricom Inc All rights reserved Printed in U S A Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com This manual provides information on the 58502A Broadband Distribution Amplifier including performance tests command reference functional description service and specifications For assistance contact Symmetricom
6. 888 88 SOURCE www artisantg com In This Guide RS 232C Port and Indicators Features Querying through the RS232 serial interface port and viewing the front panel LEDs or indicators facilitate monitoring the system Registers within the 58502A allow you to query through the RS232 interface port the individual distribution input and output channels for the presence or absence of a signal Front panel status indicators provide you with a quick visual indication of individual channel health Accessories Supplied and Available Supplied e Power cord 180 cm 6 ft detachable Manuals e 58502A Distribution Amplifier User s Guide this guide part number 097 58502 01 User s Guide ix Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com In This Guide x User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Getting Started Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started 58502A Broadband Distribution Amplifier at a Glance 58502A Broadband Distribution Amplifier at a Glance CE CAUTION METRIC amp INCH HARDWARE CONSULT SERVICE MANUAL p n 5 EE e ofo BB oe 7 A lll i a A 21 O i A
7. Enter INP SEL B and press Return Enables the B input Use the query form INP SEL to see which input channel is currently in use 1 12 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Using Commands to Control Key Functions Examples To Check the Input Channel Automatic Switching Status Enter INP SEL AUTO and press Return If 0 is returned automatic switching is disabled If 1 is returned automatic switching is enabled To Enable the Input Channel Automatic Switching Enter INP SEL AUTO 1 and press Return To Disable the Input Channel Automatic Switching Enter INP SEL AUTO 0 and press Return Distributing Input A and Backup Oscillator Option 010 Signals To Check the Input A Channel Signal Status Enter INP A QUES and press Return If 0 is returned input signal is present If 1 is returned input signal is absent To Verify that the Internal Oscillator Option 010 is Producing 10 MHz Enter ROSC QUES and press Return If 0 is returned oscillator output is normal If 1 is returned oscillator output is questionable To Check the Input Channel Automatic Switching Status Enter INP SEL AUTO and press Return If 0 is returned automatic switching is disabled If 1 is returned automatic switching is enabled To Enable the Input Channel Automatic Switching Enter INP SEL AUTO 1 and press Return To Disable
8. Inc 2300 Orchard Parkway San Jose CA 95131 1017 U S A Call Center 888 367 7966 from inside U S A only toll free 408 428 7907 U K Call Center 44 7000 111666 Technical Assistance 44 7000 111888 Sales 44 1604 586740 Fax 408 428 7998 E mail ctac symmetricom com Internet http www symmetricom com Warning Symbols That May Be Used In This Book Instruction manual symbol the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual Indicates hazardous voltages Indicates earth ground terminal L Indicates terminal is connected to chassis when such connection is not apparent 4 Indicates Alternating current Indicates Direct current Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Contents In This Guide Guide Organization vii Description of the 58502A Broadband Distribution Amplifier viii Overview viii Auto Switching and Alarm Inputs Features viii RS 232C Port and Indicators Features ix Accessories Supplied and Available ix Supplied ix Manuals ix 1 Getting Started 58502A Broadband Distribution Amplifier at a Glance 1 2 Preparing the Distribution Amplifier for Use 1 4 To Mount the 58502A Into an Equipment Rack Using Option AX4 1 4 To Connect AC Power 1 5 Connecting a Terminal or Computer to the 58502A 1 5 To Configure Terminal Communications for NT 4 0 Win
9. serial port settings are as follows e Full Duplex is ON can be turned OFF e Baud rate is 9600 can also be set to 1200 2400 or 19200 e Data bits is 8 set by parity None e Pace is NONE can be changed to XON e Parity is NONE can also be set to ODD or EVEN for 7 data bits If you need to change one of these enter the desired parameters appended to the following commands for the stated purpose To Turn Off Full Duplex Communication Enter SYST COMM SER FDUP 0 and press Return To Turn On Full Duplex Communication Enter SYST COMM SER FDUP 1 and press Return To Check If Full Duplex Communication is On or Off Enter SYST COMM SER FDUP and press Return If 1 is returned duplex is on If 0 is returned duplex is off User s Guide 1 15 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Using Commands to Control Key Functions Examples To Set Baud Rate Pacing Parity and Data Bits To set the baud rate for example to 19200 enter SYST COMM SER BAUD 19200 and press Return To set pacing for example to XON enter SYST COMM SER PACE XON and press Return To see how pacing is currently set enter SYST COMM SER PACE and press Return To set parity for example to ODD enter SYST COMM SER PARITY ODD and press Return To see what data bits are set enter SYST COMM SER BITS and press Return 1 16 User s Guide Artisan Techno
10. 1 12 3 6 Power 1 3 3 6 list of equipment 2 4 manual organization vii mounting into rack 1 4 oO operational verification test 2 2 organization manual vii output channel 4 5 output channels viii output ports viii User s Guide OUTPUT STATUS 1 12 indicators 1 3 3 6 OUTPut QUEStionable PACKed 4 6 command 4 6 OUTPut QUEStionable PACked 4 6 OUTPut QUEStionable UNPacked 4 7 outputs 1 12 1 3 1 12 outputs 3 3 outputs 1 12 3 3 OUTPUTS 1 12 connectors 1 3 P pace 3 7 4 14 pacing 3 7 parameters 3 7 parity 3 7 4 14 performance test record 2 15 performance tests 2 2 port A and B 1 3 ALARM STATUS 1 3 3 4 inputs viii OUTPUTS 1 12 1 3 OUTPUTS 1 12 3 3 RS 232 3 7 ports input A 3 3 input B 3 3 outputs viii 3 3 power 1 5 input 5 5 Power indicator 1 3 3 6 Power jack 1 3 power module 1 5 power up procedure 1 9 primary input signal 3 11 Q quartz viii R receiver GPS 3 6 recommended test equipment 2 4 record calibration 2 20 performance 2 15 registers ix revision code 4 8 ROSCillator QUEStionable 4 9 ROSCillator WARM 4 10 RS 232 configuration 3 9 RS 232 default values 1 7 1 8 2 10 RS 232 port configuring 1 7 1 8 factory default values Index 3 Guaranteed 888 88 SOURCE www artisantg com Index RS 232 port factory default values 3 7 setting 1 7 1 8 RS 232 serial interface port 1 3 RS282C interface 4 13 4
11. H A i l ewe 8 H A 2 Ny E E ila ro 3 A 1 AA J A 6 HRO A z f LO S a feo A ee TIF 8 gD oe 2 geo r9 P 1 O sie 2 LO e 1 O 1 2 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com NOTE Chapter 1 Getting Started 58502A Broadband Distribution Amplifier at a Glance See Chapter 3 Features and Functions for a detailed discussion of the items described below When the Power indicator lights it 6 RS232 serial interface port allows indicates that the proper input you to remotely control and monitor power is supplied to the 58502A the 58502A Its communication language is SCPI The connector is When the Alarm indicator lights it a DTE configuration DE 9P male indicates that operation is no longer normal One or more outputs 7 ALARMI STATUS port is a DE 9P male are at fault or input signals are connector This port allows you to absent at both inputs A and B receive an alarm or input an alarm When the Input Aor B indicator 8 OUTPUTS 1 12 50Q BNC output signal lights it indicates that an input ports signal is present at input A or B 9 INPUTS A and B 50Q BNC ports allow When any of the OUTPUT STATUS two input signal connections to the 1 12 indicators light it indicates the 58502A The internal circuitry associated output is functioning selects one of these signals for distribution AC Input p
12. Instruments SCPI commands used in the 58502A are in conformance with the SCPI Standard Version 1992 0 Command Syntax Conventions An element inside brackets is optional Note the brackets are NOT part of the command and should not be sent to the instrument 112 Means use either 1 or 2 lt numeric_value gt Means enter a number POSition Means you MUST use either all the uppercase letters or the entire word The lowercase letters are optional For example POS and POSITION are both valid However POSI is not valid Note POSition is used here as an example but this convention is true for all command keywords In other words the short form of the keywords is shown in uppercase lt n gt The notation lt n gt ending a command keyword indicates a numeric suffix used to differentiate multiple instances of the same structure The numeric suffix is applied to both the short and long forms The valid range for the value n is specified from an enumerated list for example 1 2 3 or from a range for example 1 3 to in dicate any of the integers from 1 to 3 TSTamp 1 When you see quotation marks in the command s parameter you must send the quotation marks with the command IEEE 488 2 Common Commands The Common Commands are general purpose commands that are common to all instruments as defined in IEEE 488 2 Common Commands are easy to recognize because they all begin with an asterisk or star for exam
13. STATUS output circuitry is functional 4 Mark Pass or Fail in Line 2 on the Operational Verification portion of the 58502A Performance Test Record located on page 2 14 This completes the operational verification 2 8 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com NOTE Chapter 2 Performance Tests 58502A Operational Verification RS 232 Verification Optional You may skip this verification if you do not plan to use the RS232 port 1 Apply the proper power source to the rear panel AC input jack of the Distribution Amplifier 2 Ifyou are using the Distribution Amplifier with a Terminal or personal computer PC connect it to the rear panel RS232 port using an HP 24542U interface cable or equivalent RS 232 null modem cable with DE 9S female connectors at each end as shown in Figure 2 5 Terminal or PC HP 24542U F1047 80002 58502A or equivalent Distribution Interface cable Amplifier O9 OG OO OOO OOO RS232 i Port Figure 2 5 RS 232 Verification Setup 3 Turn on the PC or terminal User s Guide 2 9 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Operational Verification 4 Set the RS 232 port of your PC to match the following default values Pace NONE B
14. both transmit and receive Default values are in italics BAUD lt numeric gt Sets the BAUD rate 1200 2400 9600 19200 BITS 7or8 Returns Data Bits set by PARity 7 for odd even 8 for none PACE XON NONE Sets flow control On or None PARity Node Only TYPE EVEN ODD NONE Sets parity Odd Even or None ERRor returns integer quoted string User s Guide First parameter is error number quoted string is error description Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference System Status Reporting Commands System Status Reporting Commands CLS This command clears the error queue ALARm This query returns alarm status of the 58502A Returns a single character 0 or 1 A value of 0 indicates alarm is off a value of 1 indicates alarm is on If any of the outputs are not functional or there is an input alarm there may be additional internal conditions that generate alarm 1 is returned If all of the outputs are functional and there is no input alarm 0 is returned OUTPut QUEStionable PACKed This query returns the status on each output in a single packed integer Each bit is associated with an output channel The least significant bit output 1 next bit output 2 and so on Returns binary weighted decimal If bit is 0 output signal is p
15. enable auto switching INPut SELect AUTO This query returns the state of the automatic input switching feature Returns single character 0 or 1 A value of 0 indicates disabled A value of 1 indicates enabled INPut SELect DEFault A B This command selects the default input channel or port to be used at powerup This setting has no impact on auto switching and does not affect the current input channel selection This setting is stored in non volatile memory Use A or B to select the appropriate power up default input port INPut SELect DEFault This query returns default input channel or port to be used at powerup Returns single character A or B 4 12 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Serial Interface Communication Commands Serial Interface Communication Commands SYSTem COMMunicate SERial BAUD lt numeric_value gt This command sets the baud rate of the RS 232 port The possible baud rate values that can be entered are 1200 2400 9600 or 19200 The baud rate value is stored in non volatile memory It is unaffected by powerup SYSTem COMMunicate SERial BAUD This query returns the baud rate value of RS 232 port Returns a an integer SYSTem COMMunicate SERial BITS This query returns the data bits value of the RS 232 port Returns 7 for even or odd parity Returns 8 for no parity S
16. the Input Channel Automatic Switching Enter INP SEL AUTO 0 and press Return User s Guide 1 13 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Using Commands to Control Key Functions Examples Distributing of the Backup Oscillator Option 010 Signal Only Just apply ac power to the 58502A After powerup allow the oscillator to warm up for 5 minutes before using the signal You do not have to send a command The oscillator will provide the output signals Commands That Are Common to All Distribution Applications Checking the Output Channels Status To Use Unpacked Integer to Check Output Channels Enter OUTP QUES UNP and press Return A string of 12 digits consisting of Os and 1s is returned The leftmost digit designates channel 1 and the rightmost digit stands for channel 12 A 0 indicates that the associated output is functional while a 1 indicates an output fault For example the following string indicates that channels 2 and 7 are not functioning 0 1 0 0 0 0 1 0 0 0 0 0 To Use Packed Integer to Check Output Channels Enter OUTP QUES PACK and press Return An array of Boolean returns The returned string provides status on each 10 MHz output in a single packed integer Each bit is associated with an output channel The least significant bit chan 1 next bit chan 2 and so on If a bit is 0 the output signal is present Hence a
17. 14 RS 232C parameters 3 7 Rubidium viii S secondary input signal 3 11 self test 1 9 serial interface cables 3 9 serial interface ports 3 7 serial number 4 8 serial port configuring 1 7 1 8 factory default values 3 7 RS 232 1 3 setting 1 7 1 8 serial port settings 3 8 changing 3 8 determining 3 8 settings serial port 3 8 signal distribution 1 11 Signal Generator 2 4 socket AC Input 1 3 Software pacing 3 7 specifications electrical 7 2 supplemental 7 2 stop bits 3 7 syntax 4 3 system health verification ix SYSTem COMMunicate SERial BAUD 4 13 SYSTem COMMunicate SERiaL BAUD 4 13 SYSTem COMMunicate SERial BITS 4 13 SYSTem COMMunicate SERial FDUPlex 4 13 SYSTem COMMunicate SERial FDUPlex 4 14 SYSTem COMMunicate SERial PACE 4 14 SYSTem COMMunicate SERial PACE 4 14 SYSTem COMMunicate SERial PARity 4 14 SYSTem COMMunicate SERial PARity 4 14 SYSTem ERRor 4 7 T terminal connecting 3 9 Index 4 terminal emulation program 1 5 test operational verification 2 2 performance 2 2 test equipment 2 4 test record 2 2 calibration 2 20 performance 2 15 theory of operation 5 3 These 3 6 twelve outputs 3 3 U using the HP 58502A 3 11 V verification operational 2 2 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com A rtisan Artisan Technology Gro
18. 2 Performance Tests 58502A Operational Verification Alarm and Status Output Verification 1 Connect the equipment as shown in Figure 2 2 using output 12 as the test output Note that any one of the outputs can be used for this alarm verification HP 8663A Sythesized Signal Generator or equivalent Output N to BNC BNC Cable Connector 1250 0780 Input 58502A for Distribution mh Amplifier 3 1666660680006 Figure 2 2 Alarm Status Output Verification Setup 2 Verify the ALARM STATUS output function by shorting to ground any of the outputs 1 12 Let s use output 12 as shown in Figure 2 3 l t7 x x Figure 2 3 Output 12 Grounded 3 Observe that the front panel Alarm indicator illuminates and the ALARM STATUS output pins 2 3 and 4 go active TTL low approximately 20 mV Figure 2 4 shows the output pins 2 3 and 4 and ground pins 1 5 and 9 User s Guide 2 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Operational Verification Outputs Figure 2 4 ALARM STATUS Port If the Alarm indicator illuminates and output pins 2 3 and 4 go low then all associated ALARM
19. 663A Signal Generator or equivalent e HP 3400B RMS Voltmeter or equivalent e 50Q BNC Feedthrough HP 10100C or equivalent Use the 50Q feedthrough if you are using the HP 54600B Oscilloscope however if you are not using this scope DO NOT use the 50Q feedthrough Input Level Response Tests A 10 MHz signal is input to the 58502A from a signal generator The level of this signal is adjusted from 7 dBm to 15 dBm while the twelve Outputs are verified for a 0 707 to 1 12 Vrms signal Specifications Tested 58502A Input Ranges Minimum Level 7 dBm Maximum Level 15 dBm 58502A Outputs 50 load Output Level 13 dBm 1 dB 3dB 2 The HP 54600B scope has only 1 MQ input impedance It does not allow you to switch or set the impedance to 50Q User s Guide 2 11 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Performance Tests Test 1 7 dBm Input Level 1 Apply power to the 58502A and observe successful completion of self test 2 Set the signal generator to FREQUENCY 10 MHz LEVEL 7 dBm 3 Connect the signal generator output to the 58502A input A or B rear panel input connector as shown in Figure 2 6 4 Connect the RMS voltmeter via the 50Q load to the 58502A Output 1 as shown in Figure 2 6 HP 8663A i i HP 3400B Synthesized Signal Generator or equivalent RMS Voltmeter or equivalent
20. Calibration Option 010 Only 2 16 Overview 2 16 Equipment 2 17 Procedures 2 17 Determining Frequency Difference 2 17 Software Oscillator Adjustment 2 18 Calibration Record Page 1of1 2 20 3 Features and Functions Chapter Contents 3 2 Inputs 3 3 AC Input 3 3 INPUTS A and B Ports 3 3 Outputs 3 3 OUTPUTS 1 12 Ports 3 3 ALARM STATUS Port 3 4 ALARM STATUS Port Outputs 3 4 ALARM STATUS Port Inputs 3 5 Indicators 3 6 Power Indicator 3 6 iv User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Contents Alarm Indicator 3 6 Input A and B Indicators 3 6 OUTPUT STATUS 1 12 Indicators 3 6 Serial Interface Ports 3 7 RS 232 Port 3 7 RS 232 Port Configuration 3 7 Making Changes to the Serial Port Settings If Needed 3 8 Determining the Serial Port Settings 3 8 Connecting a Terminal or Computer 3 9 To Connect a Terminal or Computer to the 58502A 3 9 Different Ways to Check Alarm Status 3 11 Configuring the Inputs 3 11 To Configure One Input Operation 3 11 To Configure Two Input Operation 3 11 To Configure the Internal Oscillator as a Backup Option 010 3 12 To Configure the Internal Oscillator as the Only Source Input Option 010 3 12 4 Command Reference Chapter Contents 4 2 SCPI Conformance Information 4 3 Command Syntax Conventions 4 3 IEEE 488 2 Common Commands 4 3 58502A Command Summary 4 4 System Status Reporting Commands 4 6 Identification
21. Command 4 8 Internal Oscillator Calibrating and Status Commands Option 010 Only 4 9 Input Port Status and Setup Commands 4 11 Serial Interface Communication Commands 4 13 5 Functional Description Introduction 5 2 Functional Block Description of the 58502A 5 3 Controller Block 5 4 Panel LEDs Block 5 4 2 to 1 Switch Block 5 4 1 to 12 Amplifiers and Isolators Block 5 5 Power Supply Module Block 5 5 User s Guide V Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Contents 6 Service Introduction 6 2 Determining 58502A Fault Status 6 2 7 Specifications Introduction 7 2 Index vi User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com In This Guide This preface contains the following information e Guide Organization page vii e Description of the 58502A Broadband Distribution page viii Amplifier e Accessories Supplied and Available page ix e Manuals page ix Guide Organization Table of Contents Chapter 1 Getting Started provides an overview of the 58502A Broadband Distribution Amplifier s indicators connectors inputs and outputs This chapter also provides installation power up instructions and sample commands to familiarize you with the 58502A Chapter 2 Performance Tests provides procedures that verify the 58502A operates properly and meets its electrical pe
22. If parity is enabled the 58502A sends receives 7 data bits plus 1 parity bit If parity is disabled the 58502A sends receives 8 data bits SYSTem COMMunicate SERial PARity This query returns the parity setting of the RS 232 port Returns EVEN ODD or NONE 4 14 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Functional Description Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 5 Functional Description Introduction Introduction This chapter gives a simplified functional description of the 58502A Broadband Distribution Amplifier The 58502A provides twelve channel isolation and distribution for a input timing signal which frequency can range from 100 kHz to 10 MHz 5 2 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 5 Functional Description Functional Block Description of the 58502A Functional Block Description of the 58502A The 58502A electronic circuits consist of five primary blocks Controller Panel LEDs 2 to 1 Switch 1 to 12 Amplifiers and Isolators Power Supply Module Figure 5 1 is a simplified overall block diagram the 58502A circuitry Alarm input Input A _ gt Input B gt Power gt AC Controller Alarm status output condition
23. Input Option 010 If the 58502 Distribution Amplifier contains the optional quartz oscillator Option 010 you only need to connect the 58502A to ac power The oscillator will provide the output signals After powerup allow the oscillator to warm up for at least 5 minutes before using the signals 3 12 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Command Reference Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Chapter Contents Chapter Contents This chapter provides a description for each command that can be used to operate the 58502A Broadband Distribution Amplifier This chapter is organized as follows 4 2 SCPI Conformance Command Syntax Conventions IEEE 488 2 Common Commands 58502A Command Summary System Status Reporting Commands Identification Command Internal Oscillator Calibration and Status Commands Option 010 Only Input Ports Status and Setup Commands Serial Interface Communication Commands page 4 3 page 4 3 page 4 3 page 4 4 page 4 6 page 4 8 page 4 9 page 4 11 page 4 13 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference SCPI Conformance Information SCPI Conformance Information The Standard Commands for Programmable
24. YSTem COMMunicate SERial FDUPlex ON OFF This command sets the duplex state of the RS 232 port Use this command when you cannot see on the computer screen the characters you are typing for your command ON enables echoing of the characters you type i e when typing a command the ON state allows you to see on the computer screen the characters you type OFF disables the echoing of the characters you type The duplex state is stored in non volatile memory It is unaffected by powerup User s Guide 4 13 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Serial Interface Communication Commands SYSTem COMMunicate SERial FDUPlex This query returns the duplex state of the RS 232 port Returns a single character 0 or 1 A value of 0 indicates echo is OFF a value of 1 indicates echo is ON SYSTem COMMunicate SERial PACE XON NONE This command sets flow control of the RS 232 port The choices are XON or NONE The software pacing or flow control state is stored in non volatile memory It is unaffected by powerup SYSTem COMMunicate SERial PACE This query returns the flow control state of the RS 232 port Returns XON or NONE SYSTem COMMunicate SERial PARity EVEN ODD NONE This command sets parity of the RS 232 port The choices are EVEN ODD or NONE The parity state is stored in non volatile memory It is unaffected by powerup
25. _value gt For example if present EFC value is 1000 and STEP value is 18 DIAG CAL ROSC EFC ABS UP will increase the EFC value to 1013 DIAGnostic CALibration ROSCillator EFC ABSolute STEP This query returns the incremental step value by which the absolute EFC value is adjusted Returns an integer SOURce ROSCillator QUEStionable This query reports if the internal oscillator is producing 10 MHz Returns a single character 0 or 1 A value of 0 indicates oscillator output is normal A value of 1 indicates oscillator output is questionable User s Guide 4 9 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Internal Oscillator Calibrating and Status Commands Option 010 Only SOURce ROSCillator WARM This query reports if the internal oscillator is warmed up Returns a single character 0 or 1 A value of 0 indicates oscillator is not warm A value of 1 indicates oscillator output is warm 4 10 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Input Port Status and Setup Commands Input Port Status and Setup Commands INPut A QUEStionable This query reports if there is a signal present on input A Returns a single character 0 or 1 A value of 0 indicates signal is present not questionable A value of 1 indicates no signal
26. and B and all output status indicators will be extinguished and the alarm indicator will be lit If a hardware fault occurs on one or more output distribution channels then that channel s associated indicator will be extinguished and the alarm indicator will illuminate 2 to 1 Switch Block This block consists of inputs A and B routed to a programmable switch that provides a single output to the input of the 1 to 12 Amplifiers and Isolators block Input selection switching for this block is controlled by the input select line that arrives from the controller block The controller block input select line state at power on from the factory selects input A over B if valid signals are present at both connectors but will switch to input B automatically if the signal at input A fails If input B fails and input A signal reappears the controller block will select input A again as the valid input signal source If both inputs fail no select line state change will occur 5 4 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 5 Functional Description Functional Block Description of the 58502A 1 to 12 Amplifiers and Isolators Block This block consists of twelve separate individual isolation amplifiers that accomplish the distribution of the source frequency ranging from 100 kHz to 10 MHz into twelve available output channels with very low phase noise and signal
27. aud Rate 9600 Parity NONE Data Bits 8 Stops Bits 1 If needed see Connecting a Terminal or Computer to the 58502A starting on page 1 5 in Chapter 1 for information on setting above parameters a Press Return or Enter key on the PC The scpi gt prompt should be displayed b At the prompt type IDN c Press Return This query returns the 58502A identification similar to the following HEWLETT PACKARD 58502A 3426A 001 23 3422 A 5 Mark Pass or Fail in Line 3 on the Operational Verification portion of the 58502A Performance Test Record located on page 2 14 2 10 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Performance Tests 58502A Performance Tests These tests verify the specified electrical performance of the 58502A Distribution Amplifier The tests do not require access to the inside of the instrument and do not test typical specifications or supplementary characteristics If the performance test is to be considered valid the following conditions must be met e Instrument being tested is powered on and warmed up e Tests are conducted as presented in this section e Tests are conducted under normal operating conditions as stated in Chapter 7 Specifications e Test equipment is selected according to the Table 2 1 Recommended Test Equipment on page 2 4 Equipment e HP 8
28. cifications describe the instrument s warranted performance Supplemental characteristics are intended to provide information useful to apply to the instrument by giving typical or nominal but non warranted performance parameters 7 2 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 7 Specifications Introduction Electrical Specifications Input A or B Frequency Range 0 1 MHz to 10 MHz Impedance 50Q nominal SWR lt 1 5 Amplitude 15 dBm maximum 7 dBm minimum Connector BNC female Outputs into 50Q Amplitude 13 dBm 1 dB 3 dB Harmonics lt 32 dBc for Option 010 lt 20 dBc Spurious lt 110 dBc lt 113 typical for Option 010 lt 80 dBc Connector BNC female Mechanical Specifications Weight 2 95 kg Shipping Weight 6 35 kg Dimensions Height 45 mm Width 426 mm Depth 344 mm Supplemental Characteristics Outputs Single Sideband Phase Noise 1 Hz bandwidth Offset Frequency Phase Noise 100 Hz lt 127 dBc Hz 1 kHz lt 142 dBc Hz 10 kHz lt 148 dBc Hz Port to Port Isolation lt 100 dBc typical measured by switching between open and short loads on output port and measuring associated phase noise on adjacent output port User s Guide Environmental Specifications Temperature Operating 0 C to 55 C Non operating 40 C to 70 C EMI CISPR 11 Group 1 Class B Remote System Int
29. distortion at the rear panel output BNC connectors In addition each output is impervious to the effects an adjacent channel short or open connection during normal operation A single input signal feeds all twelve isolation amplifiers that is routed from the output of the 2 to 1 Switch block This block includes BITE hardware Built In Test Equipment that monitors the presence of all twelve outputs and routes this information to the Controller block via the output condition signal line Power Supply Module Block This block provides 5 15 and 15 Vdc to all other blocks in the instrument When ac power is used it provides fuse protection steps down rectifies filters regulates and distributes internal dc power User s Guide 5 5 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 5 Functional Description Functional Block Description of the 58502A 5 6 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Service Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 6 Service Introduction Introduction This chapter provides the information required to determine if the 58502A Broadband Distribution Amplifier is faulty Determining 58502A Fault Status Use the following procedure to determine fault status of the 58502A Distribution Am
30. dows 95 Based PC 1 7 To Configure Terminal Communications for Windows Based PC 1 8 Powering Up the Distribution Amplifier 1 9 Overview of the Power Up Procedure What to Expect 1 9 To Power Up the Distribution Amplifier 1 9 Using Commands to Control Key Functions Examples 1 11 Overview 1 11 Setup Commands for the Different Distribution Applications 1 12 Distributing One Input Signal Aor B 1 12 Distributing Two Input Signals A and B 1 12 Distributing Input A and Backup Oscillator Option 010 Signals 1 13 Distributing of the Backup Oscillator Option 010 Signal Only 1 14 Commands That Are Common to All Distribution Applications 1 14 Checking the Output Channels Status 1 14 Changing the RS 232 Serial Port Characteristics 1 15 User s Guide iii Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Contents 2 Performance Tests Introduction 2 2 Operational Verification 2 2 Performance Tests 2 2 Calibration Option 010 Only 2 2 Test Record 2 2 Test Equipment Required 2 4 58502A Operational Verification 2 5 Equipment 2 5 Outputs 1 12 Verification 2 5 Alarm and Status Output Verification 2 7 RS 232 Verification Optional 2 9 58502A Performance Tests 2 11 Equipment 2 11 Input Level Response Tests 2 11 Test 1 7 dBm Input Level 2 12 Test 2 15 dBm Input Level 2 13 58502A Performance Test Record Page 1of2 2 14 58502A Performance Test Record Page 20f2 2 15 58502A
31. e connector shell To simplify interface cable selections the following subsections tell you which cables to use To Connect a Terminal or Computer to the 58502A Use an HP 24542U interface cable or equivalent RS 232 null modem cable with DE 9S female connectors at each end to connect the 58502A s rear panel RS232 port to a terminal or computer as shown in Figure 3 3 User s Guide 3 9 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Connecting a Terminal or Computer Terminal or PC HP 24542U F1047 80002 or equivalent 58502A inte Distribution cable Amplifier OTE 5505500556 0o aT RS232 Port DTE Figure 3 3 Connecting a PC or Terminal to the 58502A 3 10 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com NOTE Chapter 3 Features and Functions Different Ways to Check Alarm Status Different Ways to Check Alarm Status The 58502A provides three ways to check its alarm status visually viewing the front panel indicators querying for status via the RS232 port and monitoring the ALARM STATUS port Configuring the Inputs The 58502A Broadband Distribution Amplifier can be manually operated or operated with a computer or terminal for enhanced features The 58502A can be manually o
32. e 2 13 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Performance Test Record Page 1 of 2 58502A Performance Test Record Page 1 of 2 Model 58502A Broadband Distribution Amplifier Serial Number Repair Work Order No Test Performed By Temperature Date Notes Relative Humidity Line Number Operational Verification Outputs 1 12 Verification Test Results Pass Fail Alarm Status Verification RS 232 Verification 58502A Performance Tests Input Level Response Tests Test 1 7 dBm Input Level Minimum 0 707 Vrms lt Actual Reading Outputs 1 12 Maximum lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt 9 CS MN SO oo me we dS lt 1 12 Vrms 0 707 Vrms lt gt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt a N 2 14 lt 1 12 Vrms User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Perf
33. e 58503A GPS Time and Frequency Reference Receiver and the HP 5071A Primary Frequency Standard via pins 6 and 7 The pin assignments are described in Table 3 1 Table 3 1 ALARM STATUS Port Pin Assignments Pin Description Number 1 5 9 GROUND Signal return ground potential 2 3 4 ALARMS OUT TTL 6 7 ALARMS IN TTL 8 Do not use or ground See the section Different Ways to Check Alarm Status which discusses three different ways you can check the alarm status of the 58502A ALARM STATUS Port Outputs The output pins 2 3 and 4 of this port shown in Figure 3 1 allow you to monitor the status of the 58502A Output pins 2 3 and 4 area TTL high 3 5 Vdc minimum when operation is normal and TTL low 1 5 Vde maximum if there is an alarm Alarm Outputs ALARM S A US Figure 3 1 Alarm Outputs All of the output pins are at a TTL high when there is no alarm condition When an alarm condition exists all of the output pins drop to a TTL low These outputs echo the state of front panel Alarm indicator 3 4 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Outputs ALARM STATUS Port Inputs The input pins 6 and 7 of this port are shown in Figure 3 2 The input pins are a TTL high 3 5 Vdc minimum when operation is normal and TTL low 1 5 Vde maximum if there is an alarm
34. e 58503A on input B Using INP ALARM query would return 1 0 0 indicating that the alarm occurred in the device connected to pin 6 User s Guide 3 5 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com o SYSTEM STATUS Power Alarm Input Input A B o o o OUTPUT STATUS 123456 ooo0oo0oo00 7894107 oooo0o00 Chapter 3 Features and Functions Indicators Indicators Power Indicator This indicator lights when the input power is supplied to the 58502A The indicator cannot be set or queried via the serial interface Alarm Indicator This indicator lights when an alarm is detected in the distribution system Illumination of this indicator could mean that one or more outputs are at fault or an input signal is absent at both inputs A and B or the 58502A has received alarm signals from the external precision frequency sources Input A and B Indicators These indicators light when a sinusoidal input signal is present at input A or B OUTPUT STATUS 1 12 Indicators These indicators light when the associated outputs are functioning 3 6 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Serial Interface Ports Serial Interface Ports RS 232 Port nase This 9 pin male subminiature D DE 9P rear panel connector is a fo RS 232 DTE configuration serial inte
35. e Tests Calibration Record Page 1 of 1 Calibration Record Page 1 of 1 Model 58502A Option 010 Broadband Distribution Amplifier Serial Number Repair Work Order No Test Performed By Temperature Date Relative Humidity Notes Calibration Dates and Values EFC Value Frequency or Frequency Difference e Dy N S oy A W N H j m 2 20 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Features and Functions Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Chapter Contents Chapter Contents You will find that this chapter makes it easy to look up all the details about a particular feature of the 58502A Broadband Distribution Amplifier This chapter is organized as follows 3 2 Inputs AC Input INPUTS A and B Ports Outputs OUTPUTS 1 12 Ports ALARM STATUS Port Indicators Power Indicator Alarm Indicator Input A and B Indicators OUTPUT STATUS 1 12 Indicators Serial Interface Ports RS 232 Port RS 232 Configuration Connecting a Terminal or Computer To Connect a Terminal or Computer to the 58502A Different Ways to Check Alarm Status Configuring the Inputs To Configure One Input Operation To Con
36. e by this amount STEP returns lt EFC increment value gt Query INPut INPUT Subsystem A QUEStionable returns 0 or 1 Reports if there is a signal present on input A 0 signal present 1 no signal present B QUEStionable returns O or 1 Reports if there is a signal present on input B 0 signal present not questionable 1 no signal present ALARm 0 0 0 or 1 0 0 or 0 1 0 Reports the alarm status of devices connected to the input pins 6 7 of the ALARM STATUS port 0 0 0 no alarm exists 1 0 0 alarm from input A devices connected to pin 6 0 1 0 alarm from input B devices connected to pin 7 SELect Enables either Input A or Input B Use the query form to see which input is currently in use This command also disables auto switching User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Keyword Syntax INPut Continued Chapter 4 Command Reference 58502A Command Summary Table 4 1 58502A Command Summary Continued Parameters Description INPUT Subsystem Continued AUTO AUTO append 0 or OFF or 1 or ON returns O or 1 Enables or disables the automatic input switching feature 0 or OFF disables it while 1 or ON enables it This setting is stored in non volatile memory Query DEFault DEFault AorB returns AorB Selects the default in
37. e commands 1 11 F factory default values RS 232 port 3 7 serial port 3 7 FDUPlex 4 18 4 14 features viii ix features and functions 3 1 flow control state 4 14 frequency standard viii 3 6 G GPS frequency standard viii GPS receiver 3 6 H HP 5071A Primary Frequency Standard 3 6 HP 58503A GPS Receiver 3 6 I indicator Input A 3 6 Input B 3 6 OUTPUT STATUS 1 12 3 6 Power 3 6 indicators 3 6 Alarm 1 3 Input A 1 3 Input B 1 3 OUTPUT STATUS 1 12 1 3 Power 1 3 INPut B QUEStionable 4 11 input channels 3 3 Input A indicator 1 3 User s Guide Guaranteed 888 88 SOURCE www artisantg com Artisan Technology Group Quality Instrumentation Index Input B indicator 1 3 input channel 4 5 input channels viii Input Level Response Test 2 11 input ports vili input A viii input A 3 3 Input A indicator 3 6 input B viii 3 3 Input B indicator 3 6 INPut A QUEStionable 4 11 INPut ALARM 4 11 INPut SELect 4 11 INPut SELect AUTO 4 12 INPut SELect AUTO 4 12 INPut SELect DEFault 4 12 INPut SELect DEFault 4 12 INPut SELect 4 12 inputs A and B 1 3 3 3 ac input 3 3 configuration 3 11 INPUTS A and B connectors 1 3 installing rack mount rack mount installation 1 4 interface cables 3 9 interface port RS 232 3 7 RS 232 1 3 J jack AC Input 1 3 3 3 L LED Alarm 1 3 indicator Alarm 3 6 Input A 1 3 3 6 Input B 1 3 3 6 OUTPUT STATUS
38. elow Software Oscillator Adjustment 1 Use the terminal and serial port to send the following SCPI command to ascertain the EFC value currently applied DIAG CAL ROSC EFC ABS 2 18 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Calibration Option 010 Only 2 Use the terminal and serial port to send one of the following SCPI commands to incrementally adjust the EFC control signal to bring the oscillator frequency closer to 10 MHz DIAG CAL ROSC EFC ABS UP or DIAG CAL ROSC EFC ABS DOWN Where UP increases frequency and DOWN decreases frequency 3 As you approach the proper frequency change the step size to smaller values by sending the following SCPI command DIAG CAL ROSC EFC ABS STEP lt value gt The default step size is 10 000 A recommended first reduction in size should be to 1 000 4 Continue to adjust UP or DOWN with finer increments until the frequency output is 10 MHz lt 1 x 10 9 0 01 Hz 5 Record the date EFC value and frequency value on the Calibration recorded located on page 2 20 6 Return the EFC step size to its original value by sending the following SCPI command DIAG CAL ROSC EFC ABS STEP 10000 This completes the 58502A calibration User s Guide 2 19 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performanc
39. erface and Control Data Communications RS 232C DTE Connector DE 9P male Alarm Status Input and Output Connector DE 9P male Normal State TTL High Alarm State TTL Low Output Configuration Open collector output 10kQ pull up to 5 Vde Power Requirements AC Input 100 132 or 175 240 Vac 47 63 Hz 80 VA Max Available Options Option 010 Internal Backup Oscillator 10 MHz Precision Oven Controlled Quartz Crystal replaces Input B Stability Temperature Stability 6 x 10 0 C to 55 C Aging Day 5 x 100 Aging Year 1x 107 Tuning Range 7 x 107 minimum Option AX4 Rack Mount Kit 7 3 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 7 Specifications Introduction 7 4 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Index SYSTEem COMMunicate SERial1 BAUD 4 13 SYSTem COMMunicate BAUD 4 13 BITS 4 13 FDUPIlex 4 14 PACE 4 14 PARity 4 14 SERial BAUD 4 13 FDUPlex 4 14 PACE 4 14 PACE 4 14 SERial1 BITS 4 13 FDUPlex 4 13 PARity 4 14 PARity 4 14 SYMBOLS PORTY2 4 13 4 14 CLS 4 6 IDN 4 8 commands OUTPut QUEStionable 4 7 OUTPut QUEStionable 4 7 OUTPut QUEStionable 4 7 4 7 NUMERICS 183 4 8 A AC Input jack 1 3 ac power 1 5 5 5 alarm checking 3 11 Alarm indicator 1 3 3 6 alarm signals 3 4 3 6 alarm s
40. figure Two Input Operation To Configure the Internal Oscillator as a Backup Option 010 Input To Configure the Internal Oscillator as the Only Source Input Option 010 page 3 3 page 3 3 page 3 3 page 3 3 page 3 3 page 3 4 page 3 6 page 3 6 page 3 6 page 3 6 page 3 6 page 3 7 page 3 7 page 3 7 page 3 9 page 3 9 page 3 11 page 3 11 page 3 11 page 3 11 page 3 12 page 3 12 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Inputs Inputs AC Input F This rear panel ac power module or jack senses the incoming voltage i and automatically selects the proper setup The nominal ac input range is 100 132 175 240 Vac 47 63 Hz 40 VA i JO VAC 50 60GHz 40 VA Max 10 24 A ok INPUTS A and B Ports These rear panel 509 BNC input connectors or ports allow two input yA SVRMS MAX signal connection to the 58502A These ports will accept sinusoidal signals ranging from 100 kHz to 10 MHz with power level of 7 to 15 dBm These ports form a 2 to 1 auto switch When the 58502A detects that one ofits inputs is removed or the amplitude of the input is greatly reduced it will automatically switch to the other input Thus the auto switch feature ensure your critical frequencies are always present Only one input is used at a time Factory default is set to input A over B if valid sig
41. hange it is recommended that you record the settings and keep the record with the 58502A If you need to change the serial port settings for example to set up for a different computer use the guidelines given in this section Serial port settings are changed by issuing commands It is recommended that you issue a single compound command which simultaneously sets all the serial port parameters Then connect the other computer and begin using the instrument with the new settings If you choose to set parameters one at a time you will make the procedure more difficult That is with each change the instrument will be updated but your computer will retain its original settings At each step you will have stopped serial communications and be forced to modify your PC settings to match the 58502A in order to continue It is recommended that you make all changes in a single compound command verify the changes and record all parameters The command line below would set the RS 232C port pacing to XON baud rate to 2400 and parity to EVEN SYST COMM SER PACE XON BAUD 2400 PARITY EVEN Determining the Serial Port Settings If you connect your PC press Return and do not get a scpi gt prompt back from the 58502A your 58502A s serial communication settings may have been modified You need to systematically step through the data communication settings on your PC until your PC matches the 58502A The 58502A cannot communicate its setti
42. ick on the Terminal icon a picture of a PC witha telephone in front of it in the Accessories window 2 Select Settings then choose Communications A dialog box is displayed that allows you to configure your PC 3 Set the RS 232 port of your PC to match the following default values Pace None Baud Rate 9600 Parity None Data Bits 8 Stop Bits 1 NOTE See the important NOTE on page 1 7 that provides information on what to do if the factory default values of the 58502A s RS 232 port have been changed 4 Inthe Communications dialog box be sure to select the appropriate port or connector COM1 for example 5 Next perform the power up procedure described in the section Powering Up the Distribution Amplifier on page 1 9 1 8 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com NOTE NOTE Chapter 1 Getting Started Powering Up the Distribution Amplifier Powering Up the Distribution Amplifier Overview of the Power Up Procedure What to Expect When you power up the 58502A Distribution Amplifier for the first time you should expect it to run through the following sequence e front panel Alarm indicator momentarily flashes indicating the unit is going through self test and e enters steady state operation acting as a twelve channel distribution amplifier To Power Up the Distribution Amplifier The 58502A may be operated without a term
43. inal or computer The computer is needed for you to remotely monitor the status of the 58502A and to change setup parameters As shown in Figure 1 3 note that the terminal or computer is optional connect the 58502A s outputs as required for your application and provide at least one input at either the input A or B rear panel input connector Without 50Q termination of the outputs the front panel OUTPUT STATUS indicators may not operate properly because the amplitude of the output signals may not be within specifications See the section Features and Functions in Chapter 3 Features and Functions for information on connection and operation for your chosen application If you are using the Distribution Amplifier with a terminal personal computer PC see the section Connecting a Terminal or Computer to the 58502A starting on page 1 5 Apply the proper power source to the rear panel AC input jack of the Distribution Amplifier See the subsection To Connect AC Power on page 1 5 If an input signal is connected to either input A or B the 58502A should now be distributing the input signal to all 12 output ports User s Guide 1 9 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Powering Up the Distribution Amplifier Terminal or PC HP 24542U F1047 80002 or equivalent Interface Outputs to System
44. is present INPut B QUEStionable This query reports if there is a signal present on input B or backup oscillator Option 010 Returns a single character 0 or 1 A value of 0 indicates signal is present not questionable A value of 1 indicates no signal is present INPut ALARM This query returns the alarm status of devices connected to the alarm input pins 6 and 7 of the ALARM STATUS port A value of 0 0 0 indicates no alarm exists A value of 1 0 0 indicates that an alarm exists from the device connected to pin 6 A value of 0 1 0 indicates that an alarm exists from the device connected to pin 7 An example of how to use and interpret the alarm inputs is given on page 3 5 in Chapter 3 of this guide INPut SELect A B This command selects either input A or input B or backup oscillator Option 010 as the input channel This command also disables auto switching Use A or B to select the appropriate input port User s Guide 4 11 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Input Port Status and Setup Commands INPut SELect This query indicates which input is selected as the source input Returns single character A or B INPut SELect AUTO 0 1 This command enables or disables the automatic input switching feature This setting is stored in non volatile memory Use 0 OFF to disable auto switching Use 1 ON to
45. l do then click OK The Connect To dialog box is displayed In the Connect using window select the appropriate port or connector COM1 or COM2 then click OK The COM1 or COM2 Properties dialog box is displayed This dialog box allows you to configure the RS 232 port of your PC Set the RS 232 port of your PC to match the following default values Baud rate Bits per second 9600 Parity None Data bits 8 Stop bits 1 Pace flow control None The RS 232 port configurations of the 58502A and the PC must be the same for communications between the two If the 58502A is being powered up for the first time set your PC to match the factory default values listed above If an error number prompt E xxx gt or no scpi gt prompt is displayed after pressing Return or Enter on your PC the default values of the 58502A have been modified See the subsections Making Changes to the Serial Port Settings If Needed and Determining the Serial Port Settings on page 3 8 in Chapter 3 for more information Click OK Next perform the power up procedure described in the section Powering Up the Distribution Amplifier on page 1 9 User s Guide 1 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Connecting a Terminal or Computer to the 58502A To Configure Terminal Communications for Windows Based PC 1 Select or double cl
46. logy Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Performance Tests Verifying Specifications Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests Introduction Introduction This chapter provides procedures to test the electrical performance of the 58502A Distribution Amplifier specifications listed in Chapter 7 This chapter provides electrical specifications and supplemental characteristics for the 58502A Broadband Distribution Amplifier Electrical specifications describe the instrument s warranted performance Supplemental characteristics are intended to provide information useful to apply to the instrument by giving typical or nominal but non warranted performance parameters of this guide It also provides calibration procedures for the 58502A units that contain the Option 010 Backup Oscillator Three types of testing are provided e Operational Verification starting on page 2 2 e Performance Tests starting on page 2 2 e Calibration Option 010 Only starting on page 2 2 Operational Verification The Operational Verification test is an abbreviated series of checks that may be performed to give a high degree of confidence that the instrument is operating properly without performing the Acceptance Test An operational verification is useful for incoming inspection and after instrument repair Pe
47. n Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Connecting a Terminal or Computer to the 58502A to communicate via the RS 232 serial port Most PCs contain a terminal emulation program especially PCs equipped with Windows If your PC does not contain a telecommunication program purchase one of the following programs PROCOMM PLUS DATASTORM Technologies Inc PROCOMM PLUS for Windows Cross Talk Hayes or any other terminal emulation program 3 Ifyou are using an NT 4 0 based or Windows 95 based PC perform the procedure in the subsection To Configure Terminal Communications for NT 4 0 Windows 95 Based PC on page 1 7 OR If you are using a Windows based PC perform the procedure in the subsection To Configure Terminal Communications for Windows Based PC on page 1 8 1 6 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com NOTE Chapter 1 Getting Started Connecting a Terminal or Computer to the 58502A To Configure Terminal Communications for NT 4 0 Windows 95 Based PC In the NT or Windows 95 main window click the Start button then select Programs Select Accessories Hyperterminal and Hyper Terminal The Connection Description dialog box is displayed In the Name window type 58502A for example select one of the icons the first one wil
48. nals are present at both ports If input A signal goes away while there is a signal at input B the auto switching feature automatically switches to using the input B signal However if the input A signal returns the 58502A will continue to use the input B signal It will not return to using the input A signal until you send the SCPI commands INP SEL A and INP SEL AUTO 1 Outputs ouTPUTS 1 2 OUTPUTS 1 12 Ports These twelve 509 BNC rear panel connectors or ports allow distribution of sinusoidal signals ranging from 100 kHz to 10 MHz with very low phase noise and signal distortion The isolated output signals are derived from a single sine wave input signal from input A or B The outputs have fixed and identical characteristics and retain the integrity that is frequency amplitude phase etc of the input signal The state of each distributed output signal is communicated via the front panel indicators or LEDs and can be monitored at the ALARM STATUS port User s Guide 3 3 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ALARM STATUS fe 8 Chapter 3 Features and Functions Outputs ALARM STATUS Port This DE 9P male subminiature D connector or port allows you to monitor the status of the 58502A via pins 2 3 and 4 see Table 3 1 This port also allows you to receive compatible BITE Built In Test Equipment alarm inputs from th
49. ngs until this process is complete Iterate until you are able to verify that settings on your PC match the 58502A When you are successful you will have restored full RS 232 communications enabling you to query the 58502A s communication settings Once you establish communications with the serial port you can query the 58502A for settings of the port 3 8 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Connecting a Terminal or Computer Issue the following queries to the serial port to verify its configuration SYST COMM SER PACE SYST COMM SER BAUD SYST COMM SER PARITY SYST COMM SER BITS SYST COMM SER SBITS Connecting a Terminal or Computer To connect the 58502A to a terminal or computer you must have the proper interface cable Most computers are DTE Data Terminal Equipment devices Since the 58502A is a DTE device you must use a DTE to DTE interface cable when connecting to a computer These cables are also called null modem cables The rear panel RS232 port is DTE The interface cable must also have the proper connector on each end and the internal wiring must be correct Connectors typically have 9 pins DE 9 connector or 25pins DB 25 connector with a male or female pin configuration A male m connector has pins inside the connector shell and a female f connector has holes inside th
50. nizing the frequency counter with a known standard and observing the 58502A frequency output to a resolution of at least 10 digits Connect 10 MHz reference to HP 53131A Universal Counter s or equivalent rear panel external timebase Reference input as shown in Figure 2 7 Connect any output of the 58502A to the Counter s input as shown in Figure 2 7 Set the Counter s gate time to 1 second to display at least 10 digits 10 000 000 000 User s Guide 2 17 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Calibration Option 010 Only Porti Sot Feedthrough eedthroug 10 MHz External HP 10100C Reference Out BNC Cable HP 5071A HP 53131A Primary Frequency Universal Counter Standard or equivalent l z or equivalent Channel 1 BNC Cable Terminal or PC To any available Output 58502A HP 24542U Distribution Outputs Interface Amplifier 1 12 cable i or equivalen Jio 1955050000008 Ml le beet RS232C Port Figure 2 7 58502A Calibration Setup 4 Observe Counter reading If difference from 10 MHz is lt 5 x 1078 0 5 Hz then perform the Software Oscillator Adjustment procedure b
51. o male Input amplitude at the 58502A input A or B connector must be below 5 Vrms 27 dBm or damage to the Amplifier will occur If any of these verification procedures fail try repeating them If failure still occurs refer to Chapter 6 Service in this guide for fault determination and instructions on returning the defective unit for repair Outputs 1 12 Verification Apply power to the 58502A and verify successful completion of self test before proceeding to step 2 See the subsection To Connect AC Power on page 1 5 in Chapter 1 of this guide if needed Once the 58502A Distribution Amplifier has powered on all that is required for operation is an input signal connected to either the input A or B located on the rear panel Set the HP 8663A Signal Generator to the following conditions Frequency 10 MHz Wave type Sinusoidal Amplitude 10 dBm 1 The HP 54600B scope has only 1 MQ input impedance It does not allow you to switch or set the impedance to 50Q User s Guide 2 5 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Operational Verification 3 Connect the equipment as shown in Figure 2 1 Connect the Signal Generator output to the 58502A s input A or B rear panel input and connect oscilloscope Channel 1 to output 1 port of the 58502A HP 54600B HP 8663A Oscilloscope Synthesized Signal Generator or e
52. one precision signal source by operating only from its optional internal oscillator The 58502A Broadband Distribution Amplifier has low signal distortion and very high isolation between output channels OUTPUTS 1 12 Low output phase noise also helps maintain the spectral purity of the source input signal entering the 58502A through the INPUTS A or B channel Auto Switching and Alarm Inputs Features The 58502A has two features that ensure your critical frequencies are always present First there is the auto switching feature When the 58502A detects one of its inputs is removed or the amplitude of the input is greatly reduced it will automatically switch to the other input Second there is the alarm inputs feature The 58502A is compatible with the alarm signals from the 58503A GPS Time and Frequency Reference Receiver and the 5071A Primary Frequency Standard If the alarm of one of these sources is active the 58502A switches to the other input source and it can reflect the alarm in its own alarm outputs and route this information to the ALARM STATUS port Auto switching between two inputs ensures continuous availability of critical frequencies and a fault alarm is activated when the system is not functioning correctly The auto switching and alarm inputs features can also be monitored and controlled through the RS 232 serial interface port viii User s Guide Artisan Technology Group Quality Instrumentation Guaranteed
53. ormance Test Record Page 2 of 2 58502A Performance Test Record Page 2 of 2 58502A Performance Tests Continued Input Level Response Tests Continued Test 2 15 dBm Input Level Minimum 0 707 Vrms lt Actual Reading Outputs 1 12 Maximum lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt lt 1 12 Vrms 0 707 Vrms lt SO SO NM SD or me wo H lt 1 12 Vrms 0 707 Vrms lt a S lt 1 12 Vrms 0 707 Vrms lt p lt 1 12 Vrms 0 707 Vrms lt Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com N User s Guide lt 1 12 Vrms 2 15 NOTE NOTE Chapter 2 Performance Tests 58502A Calibration Option 010 Only 58502A Calibration Option 010 Only This section provides procedures to perform routine periodic calibration of the Option 010 Broadband Distribution Amplifier Overview The following procedure uses software commands to calibrate the oscillator The optional oscillator of the 58502A has a specified aging rate of 5 x 107 per day 1 x 10 year Refer to the specifications in Chapter 7 to ensure that the 58502A o
54. ower jack User s Guide 1 3 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Preparing the Distribution Amplifier for Use Preparing the Distribution Amplifier for Use To Mount the 58502A Into an Equipment Rack Using Option AX4 1 Position the 58502A on your work surface with the front panel facing you 2 Asshown in Figure 1 1 place the long side of an angle bracket 1 part number 58502 00004 with its four mounting holes aligned with the four holes present on the 58502A front side Note that you may select the four bracket holes appropriate for either a flush or protruding installation The angle brackets are provide in the Option AX4 Rack Mount Kit Plo A RN es SO 2 Figure 1 1 Attaching Mounting Brackets for Equipment Rack 3 Attach the bracket to the instrument using four T 15 TORX screws 2 part number 0515 0380 These screws are provided in the Option AX4 Rack Mount Kit 4 Repeat steps 1 through 3 to attach a bracket to the other side of the instrument 5 Place the instrument in the position it will occupy in the equipment rack providing support as required while attaching the mounting hardware Secure the instrument to the rack with the appropriate hardware 1 4 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com NOTE Chapte
55. perated in all four modes of operation as described in the following paragraphs To Configure One Input Operation Connect the input signal to either input A or B The input signal will appear on all twelve outputs To Configure Two Input Operation Connect the primary or preferred input signal to input A and connect the secondary input to input B The input signal will appear on all twelve outputs If the primary input fails the 58502A will automatically switch to input B and the secondary input signal will appear on all twelve outputs If input A signal goes away while there is a signal at input B the auto switching feature automatically switches to using the input B signal However if the input A signal returns the 58502A will continue to use the input B signal It will not return to using the input A signal until you send the SCPI commands INP SEL A and INP SEL AUTO 1 User s Guide 3 11 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 3 Features and Functions Configuring the Inputs To Configure the Internal Oscillator as a Backup Option 010 Connect the input signal to input A Then connect the 58502A to ac power The internal oscillator will provide the source signal for the 58502A only if input A signal fails After powerup allow the oscillator to warm up for 5 minutes before using the signals To Configure the Internal Oscillator as the Only Source
56. ple CLS IDN These commands are generally not related to measurement configuration They are used for functions like clearing alarms or errors identification or setting alarm enables User s Guide 4 3 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Keyword Syntax Chapter 4 Command Reference 58502A Command Summary 58502A Command Summary Table 4 1 lists and briefly defines all of the commands that can be used to operate the 58502A Table 4 1 58502A Command Summary Parameters Description Clears error queue returns unquoted string Returns identification string ALARm returns 0 or 1 0 alarm is off 1 alarm is on Alarm is on when any of the outputs are not functional There may be additional internal conditions that generate alarm DIAGnostic Diagnostic Subsystem USED WITH OPTION 010 ONLY CALibration Node Only ROSCillator Node Only EFC Node Only ABSolute ABSolute Send lt EFC value gt or UP or DOWN returns lt EFC value gt Sets the absolute EFC electronic frequency control of the oscillator Use UP or DOWN to adjust the EFC by the increment specified in the STEP command see next command For example if present EFC value is 1000 and STEP value is 13 EFC ABS UP will increase EFC value to 1013 Query STEP lt EFC increment value gt Increments the EFC valu
57. plications These are e Checking the Output Channels Status e Changing the RS 232 Serial Port Characteristics The example commands to perform these tasks are described in the subsection Commands That Are Common to All Distribution Applications starting on page 1 14 User s Guide 1 11 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Using Commands to Control Key Functions Examples Setup Commands for the Different Distribution Applications Distributing One Input Signal A or B To determine which input channel is active enter INP A QUES and press Return or enter INP B QUES and press Return If 0 is returned input signal is present If 1 is returned input signal is absent The 58502A will distribute the one signal present regardless of which input channel is used Distributing Two Input Signals A and B To Check the Input A Channel Signal Status Enter INP A QUES and press Return If 0 is returned input signal is present If 1 is returned input signal is absent To Check the Input B Channel Signal Status Enter INP B QUES and press Return If 0 is returned input signal is present If 1 is returned input signal is absent To Select the Input A Channel Enter INP SEL A and press Return Enables the A input Use the query form INP SEL to see which input channel is currently in use To Select the Input B Channel
58. plifier 1 6 2 Perform the Power on Self test as described in Chapter 1 Getting Started of this guide If self test passes go to step 2 If the test fails go to step 5 Verify RS 232 serial port setup and operation as described in Chapter 1 Getting Started of this guide If the test passes go to step 3 If the test fails go to step 5 Verify the Alarm Status output operation as described in the ALARM STATUS Verification subsection in Chapter 2 Performance Test If pass go to step 4 If the test fails twice go to step 5 If steps 1 through 3 pass successfully performance the procedures in the section titled 58502A Performance Tests in Chapter 2 Performance Test of this guide If the performance tests pass Re check all system input signals and output loads connected to the 58502A and troubleshoot them as required If performance tests fail go to step 5 If any combination of steps 1 through 4 fail return the instrument for service User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Specifications Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 7 Specifications Introduction Introduction This chapter provides electrical specifications and supplemental characteristics for the 58502A Broadband Distribution Amplifier Electrical spe
59. put channel or port to be used at powerup This setting has no impact on auto switching and does not affect the current input channel selection This setting is stored in non volatile memory Query OUTPut QUEStionable OUTPut QUEStionable Subsystem PACKed returns binary weighted decimal Provides status on each output in a single packed integer Each bit is associated with an output channel The least significant bit output 1 next bit output 2 and so on If bit is 0 output signal is present Hence value of 0 indicates that all outputs are outputting the source signal If there was no output from outputs 2 and 3 the response would be 6 170 2 1 4 1 870 6 UNPacked SOURce ROSCillator returns array of Boolean Provides status on each output lowest numbered output to highest 0 signal at output 1 no signal at output Same result as PACKed see prior command but information on each output is provided with separate value If outputs 3 and 5 were not outputting the source signal the response would be 0 0 1 0 1 0 0 0 0 0 0 0 ROSCillator Subsystem USED WITH OPTION 010 ONLY WARM SYSTem Reports if internal oscillator is warmed up 0 not warm 1 warm SYSTem Subsystem COMMunicate SERial Node Only FDUPlex Sets duplex 0 echo Off 1 echo On RECeive TRANsmit Node Only There is a single setting of commands under this node for
60. quivalent or equivalent aa i CILI m gO Output N to BNC i BNC 50Q Feedthrough 7 Connector HP 10100C 1250 0780 0 BNC Cable Input Outputs 58502A Aor B ie Distribution h i l Amplifier 9 9160006000600 ok Figure 2 1 Operational Verification Setup 4 Verify that the front panel Input A or B and all twelve OUTPUT STATUS 1 12 output LEDs are illuminated 5 Set the oscilloscope to the following Channel 1 0 5 V div Timebase 50 ns div 6 Connect the oscilloscope to each of the rear panel output ports in turn to verify that the output signal is a nominal 1 V rms 2 8 Vp p sine wave at 10 MHz 7 Disconnect the signal from the 58502A rear panel input connector 8 Verify that all input and output LEDs are off This indicates loss of input and output 9 Mark Pass or Fail in Line 1 on the Operational Verification portion of the 58502A Performance Test Record located on page 2 14 2 6 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter
61. r Frequency Range 100 kHz to 100 MHz gt 10 digits resolution 10 MHz HP 53131A or equivalent C for Option 010 only 10 MHz Reference Source 10 MHz Reference Signal Accuracy 2 X 101 HP 5071A or equivalent C Terminal or computer Communication software RS 232 connection Any Model RMS Voltmeter Accuracy 2 at 3V Full Scale 1 MHz HP 3400B or equivalent 50Q BNC Feedthrough HP 10100C or equivalent RS 232 Interface Cable DTE to DTE 9 pin f to 9 pin f HP 24542U or equivalent Type N to BNC Connector H P 1250 0780 or equivalent 509 BNC Coaxial Cable 2 RG 58 12 meter male to male C Calibration Option 010 only OV Operational Verification P Performance Tests HP 10503A or equivalent User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com CAUTION NOTE NOTE Chapter 2 Performance Tests 58502A Operational Verification 58502A Operational Verification These following procedures check the standalone functionality of the 58502A Broadband Distribution Amplifier Equipment e Signal Generator HP 8663A e Oscilloscope HP 54600B e 50Q BNC Feedthrough HP 10100C Use the 50Q feedthrough if you are using the HP 54600B Oscilloscope however if you are not using this scope DO NOT use the 50Q feedthrough e BNC Cables 1 meter male t
62. r 1 Getting Started Connecting a Terminal or Computer to the 58502A To Connect AC Power The nominal ac input range is 100 132 175 240 Vac 47 63 Hz 40 VA The power module or jack senses the incoming voltage and automatically selects the proper setup Just connect the proper ac power using the supplied power cord Connecting a Terminal or Computer to the 58502A You may skip this section if you do not plan to use a terminal or computer proceed to the power up procedure starting on page 1 9 The 58502A may be operated without a terminal or computer The computer is needed for you to remotely monitor the status of the 58502A and to change setup parameters If you are going to communicate with the 58502A using a terminal or PC personal computer connect the computer to the rear panel RS232 port using an HP 24542U interface cable or equivalent RS 232 null modem cable with DE 9S female connectors at each end as shown in Figure 1 2 Terminal or PC HP 24542U or F1047 80002 or equivalent 58502A Interface istri i cable Distribution DTE Amplifier J 00000000000000 5s RS232 Figure 1 2 Connecting a PC or Terminal to the 58502A Turn the terminal or computer on If you are using a personal computer PC you will need to run a terminal emulation or telecommunication program on your PC in order User s Guide 1 5 Artisa
63. rdware revision letter In the product serial number XXXXY ZZZZZ XXXX is a four digit prefix that identifies a series of instruments Y identifies the country in which the instrument was manufactured e g the A in 3752A000123 stands for America ZZZZZ is a five digit suffix that identifies a particular instrument within a series For example HEWLETT PACKARD 58502A 3752A 00123 3422 A 4 8 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Internal Oscillator Calibrating and Status Commands Option 010 Only Internal Oscillator Calibrating and Status Commands Option 010 Only DIAGnostic CALibration ROSCillator EFC ABSolute UP DOWN This command sets the absolute EFC electronic frequency control of the oscillator Use UP or DOWN to adjust the EFC by the increment specified in the STEP command described below For example if present EFC value is 1000 and STEP value is 18 DIAG CAL ROSC EFC ABS UP will increase the EFC value to 1013 DIAGnostic CALibration ROSCillator EFC ABSolute This query returns the absolute EFC value of the oscillator Returns an integer DIAGnostic CALibration ROSCillator EFC ABSolute STEP lt numeric_value gt This command sets amount by which the absolute EFC value is incremented when being adjustment Use an integer for the STEP incremental value lt numeric
64. resent Hence value of 0 indicates that all outputs are outputting the source signal If there was no output from outputs 2 amp 3 the response would be 6 1 0 2 1 4 1 8 0 6 4 6 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference System Status Reporting Commands OUTPut QUEStionable UNPacked This query returns the status on each output lowest numbered output to highest Returns array of Boolean 0 signal at output 1 no signal at output Same result as PACKed see prior command but information on each output is provided with separate value If outputs 3 and 5 were not outputting the source signal the response would be 0 0 1 0 1 0 0 0 0 0 0 0 SYSTem ERRor This query returns the oldest error in the Error Queue and removes that error from the queue first in first out Returns an error number User s Guide 4 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 4 Command Reference Identification Command Identification Command IDN This query returns the 58502A identification A sequence of ASCII encoded bytes HEWLETT PACKARD 58502A XXXXY ZZZZZ WWWW V where 58502A is the product model number XXXXYZZZZZ is the product serial number and WWWW is the product s firmware revision date code and V is the ha
65. rface port It allows serial interface connection to an external computer for remote operations This serial interface port allows you to remotely control and monitor the 58502A See the section Connecting a Terminal or Computer starting on page 3 9 for information on interface cable use RS 232 Port Configuration Software pacing baud rate parity data bits and stop bits parameters for this interface are user selectable Table 3 2 shows the factory default settings and the commands to send to change them Table 3 2 RS 232 Port Interface Factory Default Values and Commands Parameter Default Command Possible Choices Software Pacing SYST COMM SER PACE XON or NONE Baud Rate SYST COMM SER BAUD 1200 2400 9600 or 19200 Parity SYST COMM SER PAR EVEN ODD or NONE Data Bits SYST COMM SER BITS 7or8 Stops Bits No command exists Fixed no choices available Full Duplex SYST COMM SER FDUP ON or OFF Procedures for configuring the RS 232 ports are provided in the following subsections User s Guide 3 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com CAUTION NOTE Chapter 3 Features and Functions Serial Interface Ports Making Changes to the Serial Port Settings If Needed If you change the serial port settings your changes will be stored in the 58502A Cycling power will not reset to factory defaults Therefore if you make a c
66. rformance specifications Electrical performance is tested against the specifications listed in Chapter 7 Specifications of this guide Chapter 3 Guide Organization provides information on 58502A features and functions and how to connect it to computers Chapter 4 Command Reference lists and describes the Standard Commands for Programmable Instruments SCPI commands used to monitor set or change parameters of the 58502A Chapter 5 Functional Description provides a brief simplified block diagram description of how the instrument works Chapter 6 Service provides information for calibration and troubleshooting to determine if the product should be returned for repair Chapter 7 Specifications lists all of the 58502A s specifications and characteristics Index User s Guide vii Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com In This Guide Description of the 58502A Broadband Distribution Amplifier Overview The 58502A is a 1 to 12 Broadband Distribution Amplifier that is used to distribute precision sine wave signals from Cesium Rubidium quartz or GPS frequency standards It provides 12 outputs of the source frequency which can range from 100 kHz to 10 MHz and is designed for site frequency distribution for manufacturing R amp D and standards lab environments In addition the 58502A may be used as a standal
67. rformance Tests The Performance Tests verify the specifications listed in Chapter 7 Specifications All tests can be performed without access to the inside of the instrument Calibration Option 010 Only The recommended 58502A calibration period is 12 months You may perform calibration more often to obtain greater accuracy This is dependent on the aging rate of the 58502A s internal reference oscillator and the amount of deviation from the frequency stability needed for your application Test Record The results of the Operational Verification and Acceptance Test should be recorded on a copy of the Acceptance Test Record located at the end of this chapter 2 2 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests Introduction User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 2 3 Instrument Signal Generator Chapter 2 Performance Tests Test Equipment Required Test Equipment Required Table 2 1 Recommended Test Equipment Required Characteristics Frequency Range 100 kHz to 10 MHz Output Level 6 to 16 dBm Harmonic Distortion lt 30 dBc Spurious Distortion lt 80 dBc Recommended Model HP 8663A or equivalent Digitizing Oscilloscope Frequency range 100 kHz to 100 MHz HP 54600B or equivalent OV Universal Counte
68. scillator has warmed up for a sufficient period of time to make this adjustment When attempting to calibrate the 58502A with the SCPI software commands you will need to establish serial communication via a terminal or PC Frequency adjustments can be made after determining the internal oscillator frequency error of the 58502A The basic 10 MHz oscillator frequency can be adjusted as required to obtain the desired frequency using the software SCPI based EFC adjust that has a control range of 2 x 10 maximum with a minimum resolution of 4 x 10712 The software EFC control range is mapped onto a numerical range of values as follows Minimum 0 Maximum 1 048 575 220 1 Mid Range 524 288 Default Step Size 10 000 Minimum Step Size 1 Maximum Step Size LIMIT ON 35 000 2 16 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 2 Performance Tests 58502A Calibration Option 010 Only Equipment e 10 MHz Primary Frequency or House Standard HP 5071A or equivalent e Terminal or computer PC Any Model with communication software and RS 232 connection e HP 53131A Universal Counter or equivalent e HP 24542U or F1047 80002 or equivalent Serial Interface Cable e HP 10100C 50Q BNC Feedthrough or equivalent e Two BNC Cables 1 meter male to male Procedures Determining Frequency Difference The frequency difference is measured by synchro
69. tatus 3 4 3 11 alarm system how it works 3 5 ALARM STATUS port 1 3 3 4 ALARm 4 6 alarm inputs feature viii User s Guide auto switch feature viii auto switching feature viii B baud 4 13 baud rate 3 7 C calibration record 2 20 Cesium viii channel inputs viii channels input A 3 3 input B 3 3 outputs viii twelve outputs 3 3 circuit description block level 5 3 command common 4 2 command summary table 4 4 command syntax conventions 4 3 commands CLS 4 6 IDN 4 8 ALARm 4 6 DIAGnostic CALibration ROSCillator EFC ABSolute 4 9 DIAGnostic CALibration ROSCillator EFC ABSolute STEP 4 9 DIAGnostic CALibration ROSCillator EFC ABSolute STEP 4 9 DIAGnostic CALibration ROSCillator EFC ABSolute 4 9 examples 1 11 INPut B QUEStionable 4 11 INPut A QUEStionable 4 11 INPut ALARM 4 11 INPut SELect 4 11 INPut SELect AUTO 4 12 INPut SELect AUTO 4 12 INPut SELect DEFault 4 12 INPut SELect DEFault 4 12 INPut SELect 4 12 OUTPut QUEStionable PACKed 4 6 OUTPut QUEStionable UNPacked 4 7 reference 4 2 ROSCillator QUEStionable 4 9 ROSCillator WARM 4 10 SCPI 4 2 Index 1 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Artisan Technology Group Quality Instrumentation Index SYSTem COMMunicate SERial BAUD 4 13 SYSTem COMMunicate SERial BAUD 4 13 SYSTem COMMunicate SERial BITS 4 13 SYSTem COMM
70. unicate SERial FDUP lex 4 13 SYSTem COMMunicate SERial FDUP lex 4 14 SYSTem COMMunicate SERial PACE 4 14 SYSTem COMMunicate SERial PACE 4 14 SYSTem COMMunicate SERial PARit y 4 14 SYSTem COMMunicate SERial PARit y 4 14 SYSTem ERRor 4 7 communication serial interface port 4 13 4 14 communications SCPI 1 5 TIME OF DAY 1 5 computer connecting 3 9 PC 1 5 terminal 1 5 configuration RS 232 port 3 9 configuration of RS 232 port 3 7 configure terminal communications 1 6 configuring serial port 1 7 configuring the inputs 3 11 connecting computer 3 9 terminal 3 9 connecting to a computer 1 9 connecting to computer 1 5 connecting to terminal 1 5 connector A and B 1 3 AC Input 1 3 ALARM STATUS 1 3 3 4 OUTPUTS 1 12 1 3 RS 232 1 3 3 7 conventions command syntax 4 3 D data bits 3 7 4 13 Data Terminal Equipment 3 9 default values 1 7 1 8 2 10 description commands 4 2 description of HP 58502A viii Index 2 DIAGnostic CALibration ROSCillato EF C ABSolute 4 9 DIAGnostic CALibration ROSCillator EF C ABSolute 4 9 DIAGnostic CALibration ROSCillator EF C ABSolute STEP 4 9 DIAGnostic CALibration ROSCillator EF C ABSolute STEP 4 9 DTE device 3 9 DTE to DTE interface cable 3 9 DTE to DTE interface cable 3 9 duplex state 4 13 4 14 E echoing of the characters you type 4 13 4 14 electrical specifications 7 2 equipment required 2 4 test 2 4 exampl
71. up is your source for quality TecmoogyGroup new and certified used pre owned equipment FAST SHIPPING AND SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT DELIVERY Experienced engineers and technicians on staff Sell your excess underutilized and idle used equipment TENS OF THOUSANDS OF at our full service in house repair center We also offer credit for buy backs and trade ins IN STOCK ITEMS www artisantg com WeBuyEquipment 7 EQUIPMENT DEMOS HUNDREDS OF InstraV ea REMOTE INSPECTION LOOKING FOR MORE INFORMATION MANUFACTURERS Remotely inspect equipment before purchasing with Visit us on the web at www artisantg com 7 for more our interactive website at www instraview com information on price quotations drivers technical LEASING MONTHLY specifications manuals and documentation RENTALS ITAR CERTIFIED D a gaa tia Contact us 888 88 SOURCE sales artisantg com www artisantg com
72. value of 0 shows indicates that all outputs are functioning If there was no output from channels 2 and 3 the response would be 6 1 0 2 1 4 1 8 0 4 6 To Check the Alarm Status Enter ALAR and press Return If 0 is returned alarm is off If 1 is returned alarm is on To Check for Serial Port Errors Enter SYST ERR and press Return An integer and quoted string are returned The first parameter is the error number and the quoted string is the error description 1 14 User s Guide Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Chapter 1 Getting Started Using Commands to Control Key Functions Examples To Check Instrument Identification Enter IDN and press Return A quoted identification string is returned similar to the following HEWLETT PACKARD 58502A 3426A 001 23 3422 A To Clear the Error Queue Enter CLS and press Return The error message disappears and the scpi gt prompt returns Changing the RS 232 Serial Port Characteristics Refer to the subsections Making Changes to the Serial Port Settings If Needed and Determining the Serial Port Settings on page 3 8 in Chapter 3 for complete details and cautions concerning the use of these commands Always remember to make corresponding changes to your PC serial port parameters after changing the instrument s serial port characteristics At first power on from the factory

Symmetricom 58502A Manual - Artisan Technology Group

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