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racal instruments 1257 switching system

1. NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up Setting RS 232 Parameters For detailed instructions on setting RS 232 parameters such as baud rate and parity refer to Chapter 4 COMPUTER INTERFACES Setting GPIB Address and SRQ Settings For detailed instructions on setting the GPIB address and SRQ settings refer to Chapter 4 COMPUTER INTERFACES Setting Ethernet IP Netmask and Gateway Settings For detailed instructions on setting Ethernet options refer to Chapter 4 COMPUTER INTERFACES Using the Front Panel Controls 3 16 EADS North America Defense Test and Services Inc 2001 1257 User Manual Setting the Display Format The display may be set to display digital port data in hexadecimal decimal or binary format To set the display format proceed as follows 1 Press the top key Rotate the knob until the top line reads SETTINGS lt 2 Select line 2 next to top line by pressing the second key Rotate the knob until line 2 of the display reads Type Display ERES SETTINGS gt Type Display lt Option Intensity St
2. This process is illustrated with several examples lf the following command was sent VERIFY MASK 1 0 10 1 the 1257 would set the verification masks for channels 0 through 10 to inverted feedback The following command would do the same thing except set the same channels to normal non inverted feedback VERIFY MASK 1 0 10 0 If a channel needs to be set to dont care this is easily accomplished by sending a value of X for the mask VERIFY MASK 81 5 1 10 15 X Assuming in the first example that the drawer had channels 0 1 2 3 4 5 6 7 8 9 10 11 and 12 issuing the following query VERIFY MASK 81 0 12 would return Lobo X doi Tor d x X which would indicate the masks for the first 11 channels were inverting and the last two were don t cares If this hypothetical card had a bad relay on channel 11 issuing the command VERIFY 1 0 12 would simply return OK If on the other hand channels 3 5 and 11 were bad sending the same verification command would return 1S Wl x5 As was the case earlier channel 11 is excluded by the mask and will not show up in the error report In addition the 1257 will show only the first ten failures it finds when a large number of channels are specified in a query These commands are NOT defined in the SCPI standard These commands follow the syntax rules of SCPI to implement this functiona
3. 1 16 19 1 14 23 and the reply INCL returns the reply 1 3 5 1 7 10 1 16 19 1 14 23 Wei Wei The INCLUDE query with no parameters passed returns all presently defined include groups Each group is separated from each other by a comma Note that if there are many include lists defined the query may result in a reply which is longer than the length of the output reply buffer 1024 characters In this case the Query Interrupted error will be placed on the error queue and the output reply buffer will be cleared To avoid this always specify a channel list with this query The reply to the INCLUDE query does NOT contain module names nor does it contain path names In addition when 3 or more consecutive channels are defined in the include list the reply will represent the channels as a range of channels with a colon between the first and last channels in the range For example if the following commands are executed MODULE DEFINE matrix 1 INCLUDE matrix 14 103 104 105 106 then the query INCLUDE matrix 105 returns the reply 1 14 103 106 Advanced SCPI Operations 7 4 EADS North America Defense Test and Services Inc 2001 1257 User Manual After power up and after a RST command has been executed all INCLUDE lists are deleted The 1257 provides the capability to define sets of relays which are Us
4. Drawer 1260 CDS Channel 100 Status Open In this example the drawer is a 1260 CDS Lines 3 and 4 indicate the status of the drawer discussed later If an installed drawer does not appear on the display using the technique described refer to Appendix C TROUBLESHOOTING to correct the problem To use the IEEE 488 or RS 232 interfaces to verify the drawer see Chapter 5 SCP COMMAND BASICS Look under the heading Checking for an Installed Drawer The front panel controls may be used to close relays or optical switches on the drawer For example suppose a 1260 CDS drawer is installed To close relay channel 4 on this drawer proceed as follows 1 Press the first key next to the display Rotate the knob until the top line reads OPERATIONS 2 Press the third key to select line 3 of the display OPERATIONS Drawer 1260 CDS gt Channel 100 lt Status Open EADS North America Defense Getting Started 2 5 Test and Services Inc 2001 Opening a Relay In Case of Trouble Getting Started 2 6 1257 User Manual 3 Rotate the knob until line 3 shows the desired channel number which is 104 in this example OPERATIONS Drawer 1260 CDS gt Channel 104 lt Status Open 4 Press the fourth key to select line 4 bottom line Rotate the knob until the display reads OPERATIONS Drawer 1260 CDS Channel 104 Set to
5. If the instrument fails to operate satisfactorily shows visible damage has been stored under unfavorable conditions has sustained stress Do not operate until performance is checked by qualified personnel Racal Instruments EC Declaration of Conformity Racai Instruments Inc 4 Goodyear Street Irvine CA 92718 declare under sole responsibility that the 1257 Switching Platform P N 407796 001 002 003 conforms to the following Product Specifications Safety EN61010 1 1993 A2 1995 EMC EN61326 1997 A1 1998 CLASS A Supplementary Information The above specifications are met when the product is installed in a Racal Instruments certified mainframe with faceplates installed over all unused slots as applicable The product herewith complies with the requirements of the EMC Directive 89 336 EEC modified by eve FEC EMC Directive and 73 23 EEC Low Voltage Directiy Irvine CA March 4 2002 eguns 2 olo Karen Evensen Director of Engineering This page was left intentionally blank 1257 User Manual Table of Contents REENEN eebe eet eeneg 1 1 INTRODUCTION cninn epa eda ey eee E ses a aa E ese 1 1 KEEN eege degkeet EE 1 1 elle 1 2 Ease EE ee 1 2 Front and Rear Panels EE 1 3 Powerful Software Tem 1 6 tems Shipped with EE 1 8 E et 2 1 GETING EE Eeer Ee 2 1 erte iie te Bel lee 2 1 Main AG aro e ENEE ES aaa EES 2 1 lee the EI 2 3 Connecting Dee 2 3 Activating Man AC EE 2 4 Self Test P See 2 4
6. ROUTE CLOSE 81 0 LOSE 1 0 ROUTE OPEN 1 0 ROUTE OPEN 1 0 Note that the optional ROUTE keyword is omitted in many of the examples SCPI Command Basics 5 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual Command Keyword Long Form and Short Form Case Sensitivity Each keyword defined by SCPI has both a long form and a short form The long form is formed by using all letters shown in the keyword The short form is formed by using only those letters shown in upper case in the command tree The short form is normally three or four letters in length ending with a consonant where possible For example the ROUTE keyword may be specified by either of the following ROUT ROUTE since the final e is shown in lower case in the command tree Only the long form or short form may be used For example the keyword DEFINE is shown as DEFine Therefore the following two command keywords are valid DEFINE DEF But the keywords DE DEFI DEF IN are NOT valid Command keywords are NOT Case sensitive Command parameters are not case sensitive unless the parameter is string data enclosed in quotes For example the following commands are equivalent CLOSE Close EADS North America Defense SCPI Command Basics 5 3 Test and Services Inc 2001
7. Select Paths s 3 Move the flashing cursor to the desired character position in the filter mask by pressing the line 2 key as many times as required to advance the cursor to the desired mask position 4 Once in the desired position rotate the knob left or right to select the appropriate filter character or wildcard character PATH CONTROL DPREKKSKKKKKKKKKKKK KS Select Paths s lt Reset Mask 5 When the mask is fully defined pressing the line 3 key Select Path s option will apply the mask condition to defined paths If the system has paths meeting the mask criteria they can be displayed selected and controlled in the manner described earlier in this section PATH CONTROL Select Filter Mask gt PATH3 lt Status Open If no paths exist that meet the filter criteria the 1257 will display gt PATH CONTROL Select Filter Mask no paths found While selecting a mask pressing the line 1 key or line 4 key will institute other changes If a mask is selected that is not all wildcards the display will give the option to reset the mask PATH CONTROL gt PREKKOKKKKKKKKKKKK KS Select Paths s Reset Mask By pressing the line 4 key all mask characters are reset to wildcards and the cursor position is returned to the first Using the Front Panel Controls 3 12 EADS North America Defense Test and Services Inc 2001 1257 User Manual character Pre
8. Defense Test and Services Inc its officers employees subsidiaries affiliates and distributors harmless against all claims arising out of a claim for personal injury or death associated with such unintended use FOR YOUR SAFETY Before undertaking any troubleshooting maintenance or exploratory procedure read carefully the WARNINGS and CAUTION notices CAUTION This equipment contains voltage hazardous to human RISK OF ELECTRICAL SHOCK life and safety and is capable of inflicting personal DO NOT OPEN injury If this instrument is to be powered from the AC line mains through an autotransformer ensure the common connector is connected to the neutral earth pole of the power supply Before operating the unit ensure the conductor green wire is connected to the ground earth conductor of the power outlet Do not use a two conductor extension cord or a three prong two prong adapter This will defeat the protective feature of the third conductor in the power cord Maintenance and calibration procedures sometimes call for operation of the unit with power applied and protective covers removed Read the procedures and heed oc ATION warnings to avoid live circuit points Before operating this instrument 1 Ensure the proper fuse is in place for the power source to operate 2 Ensure all other devices connected to or in proximity to this instrument are properly grounded or connected to the protective third wire earth ground
9. Optional Keywords Querying Parameter Setting SCPI Command Terminator SCPI Command Basics 5 4 1257 User Manual Command keywords enclosed in square brackets are optional For example the following commands are valid and equivalent ROUTE CLOSE 1 0 CLOSE 81 0 Most SCPI commands have corresponding query forms The query is used to read the present state of the item that is set with the command The query is formed by appending a question mark 7 to the end of the command keyword For example the command ROUTE CLOSE Q1 0 Has an equivalent query ROUTE CLOSE G1 0 The command instructs the 1257 to close channel 0 in the drawer The query inquires about the present open or close state of channel 0 in the drawer SCPI command termination depends on whether the GPIB or RS 232 serial interface is used For commands sent through the GPIB interface a command string sent to the 1257 must be terminated with one of the following 1 An ASCII linefeed character decimal 10 hex 0A or a character n 2 The last character with the EOI signal asserted 3 An ASCII linefeed character with the EOI signal asserted For commands sent through the RS 232 interface several different rules apply Generally speaking the RS 232 interface can be accessed a number of different ways that directly impact the termination method 1 An ASCII linefeed character decimal 10 hex 0
10. Verifying the Installed Drawer km E eot eaters ee ee 2 5 CIOSING NEE EE 2 5 Opening a EE 2 6 In Case Meier EE 2 6 Switching and Heat Dissipation EE 2 7 1257 User Manual USING THE FRONT PANEL CONTHBODLS 2 pb teer et por a tette reb ritenere Egg 3 1 ut e Teen m U 3 1 Front Pan C PE RN 3 2 Understanding the Hierarchical Menu eeeeeeeeeeieeeeeeeeeennnnnnnnennn nnne 3 2 The Five WIS sted e Ote p pu ket uci cU gu SM IER deo Su tesa n lupa su Dt AM oA EE 3 6 Operations pd 3 7 Path Control MOri pem C EREA ARE eh 3 9 E e EC EE 3 10 Settings Menu emer LS 3 13 store Recall Nt m 3 20 Systemi Men PR PE er ny ee rn nro yee 3 23 Complete Menu BEISIg soo ara ose at ou nn Dt its ear pattie Se Me 3 24 Chanera M MM 4 1 GOMPUTER INTERFAGES 2 aesti ite eH e ette rt t Ie t eed Ohad eee thane t amet ee euius 4 1 dure un MR L 4 1 onto rm 4 1 Using the Ethernet Ir e GB ona ed ad els t redit baa eee isole ei xA decere babens 4 2 Basic Ethernet Information er ete EEN dee EEN 4 2 Legal 4 2 Connecting the Ethernet Cables ote te ER CERN de 4 3 Selecting the Enn Ee 4 3 Entering the Ethernet Communication Settings esseeene 4 4 Using th
11. Work With Scan Lists D Work With Include Lists e Work With Exclude Lists e Generate Trigger Out Pulse e Set Up Response To Trigger In Pulse e Save Recall Switch States flash memory e e Save Recall Menu Preferences flash memory e EADS North America Defense Uing the Front Panel Controls 3 1 Test and Services Inc 2001 1257 User Manual Front Panel Keypad The front panel controls consist of four keypad switches pushbuttons a four line alphanumeric display and a rotary knob see Figure 3 1 Front Panel Controls The display contains four alphanumeric lines of text To the left of the display are the four keys each corresponding to one line of the display The keys select the display line to work with After selecting a display line the user may rotate the knob to change the parameter indicated on the selected line Display db 0000 Speaker _ TT I Es Understanding the Hierarchical Menu Figure 3 1 Front Panel Controls The 1257 uses a multiple level hierarchical menu tree To help the user visualize the menu tree the menu is limited to four levels Each hierarchical level is shown on its own line on the front panel display The top line shows the top level The user begins by selecting a general function category on line 1 top line Then on line 2 the 1257 displays choices that are specific to the function selected on line 1 After the user selects from the choices o
12. and trigger output delay The Scan List operation is initiated by sending an INIT IMMEDIATE command or INIT CONTINUOUS command EXT This selects the 1257 external trigger input line Each time a low going pulse is received on the line the scan list advances to the next element After power up and after a RST command the trigger source is set to IMMEDIATE The present trigger source may be queried using the TRIGGER SOURCE query The reply to this query will be one of the following EADS North America Defense Advanced SCPI Operations 7 7 Test and Services Inc 2001 1257 User Manual BUS HOLD IMM EXT Selecting the The trigger count determines how many elements will be scanned in the scan list That is if the trigger count is 10 then the scan list Trigger Count will advance 10 times before halting Any triggers received from the selected trigger source will be ignored after the trigger count has been satisfied The syntax for the TRIGGER COUNT command is TRIGger SEQuence COUNt trigger count The trigger count is a numeric value between 1 and 21747483647 27 1 The present trigger count may be queried by using the TRIGGER COUNT query Selecting a Trigger The 1257 may be programmed to delay before acting on a trigger Delay This provides the ability to slow down the scan list operation if so desired The TRIGGER DELAY command is used to program the trigger delay The syntax for thi
13. enable mask ENABle QUEStionable When the register or status EVENt Query Only event are read they will CONDition Query Only return a value of zero 0 ENABle enable mask These commands are not ENABle used with the 1257 TRIGGER and Related Commands Subsystem TRIGger 7 7 7 8 SEQuence 7 7 7 8 7 10 COUNt trigger count gt 2314 7 8 2 billion DELay lt trigger delay gt 10 0 resolution 0 000001 1 microsecond SOURce BUS HOLD IMMediate EXT IMMediat e IMMediate 7 7 7 10 SCPI Command Reference 6 4 EADS North America Defense Test and Services Inc 2001 1257 User Manual Table 6 1 Continued Command Map Min Defaut Seepage Notes OUTPut 7 11 DELay output trigger delay time 10 0 0 0 0 0 resolution 0 000001 1 microsecond TRIGger 7 11 STATe ON OFF 1 0 7 11 INITiate 7 9 IMMediate ON OFF 1 0 Command Only 7 9 CONTinuous ON OFF 1 0 Command Only 7 9 ABORt IEEE 488 2 Common Commands IDN Query Only 5 6 5 16 RST Command Only 5 6 5 17 TST Query Only 5 6 5 18 CLS Command Only 5 6 5 13 ESE register value 255 0 0 5 6 5 14 ESE 5 6 5 14 ESR Query Only 5 6 5 15 SPE 5 6 5 19 SRE register value 255 0 0 5 6 5 15 SRE 5 6 5 15 STB Query Only 5 6 5 15 OPC 5 6 5 16 OPC 5 6 5 16 TRG Command Only 5 7 5 20 SAV lt state gt Command Only 0 100 100 5 7 5 18 RCL l
14. local echo with line feed appended to incoming messages see your data terminal manual for information on how to do this NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up The 1257 allows the user to set the following additional RS 232 parameters e Data bits Data bits per frame The RS 232 interface allows either 7 or 8 bits per data frame For most applications set this to 8 e Stop bits Stop bits at end of each frame The RS 232 interface can insert either one or two stop bits at the end of each data frame Slow data terminals may require the extra delay resulting from two stop bits However for most applications one stop bit is sufficient e Parity Type of parity checking Parity checking provides a level of confidence that data has been received properly When parity checking is used an extra bit the parity bit is inserted at the end of each data frame The RS 232 interface provides three parity options none no checking performed even sum of all bits including parity bit is an even number or zero and odd sum of all bits including parity is an odd
15. module names separated by a comma Module names are stored internally in upper case characters by the 1257 These upper case names are returned in the reply For example suppose the following commands have been executed MODULE DEFINE matrix 1 MODULE DEFINE rf mus 1 Then the query MOD CAT returns the reply MATRIX RE_MUX The module address associated with a module name may be read using the MODULE DEFINE query The syntax for this command is ROUTe MODule DEFine module name Using the example in the previous section of this manual the query MODULE DEFINE matrix returns the reply 1 EADS North America Defense Test and Services Inc 2001 1257 User Manual Storing the Drawer All module names presently ee SE B ETE for storage in non volatile memory using the MODULE SAVE command The Names in Non actual process of updating non volatile memory requires a Volatile Memory separate SYSTEM NVUPD command This allows multiple relay states exclude lists include lists and module names to be updated in rapid succession followed by a single slower update of the actual non volatile memory All module names stored in non volatile memory may be recalled from non volatile memory using the MODULE RECALL command The syntax for these commands is shown below ROUTe MODule SAVe RECall These commands are NOT defined in the SC
16. query while the Standard Event Status Register may be read using the ESR query When a reply is in the output queue the message available or MAV bit of the status byte is set The status byte of the 1257 may be read using the GPIB serial poll feature SCPI Command Basics 5 26 EADS North America Defense Test and Services Inc 2001 1257 User Manual Specifying Channels in Commands To select a single channel in a command both the fixed address of the drawer always 1 in a 1257 which contains the channel and the channel number must be specified The syntax to describe a single channel is lt address gt channel where address This is a number that will always have a value of 1 in a 1257 channel This is a number which identifies a channel to operate The range of valid values for channel depends on the particular drawer being controlled So to close channel 17 in the drawer use the command CLOSE 81 17 Multiple channels for a drawer may be specified using the syntax lt address gt lt channel gt lt channel gt So the command CLOSE 1 1 5 9 11 may be used to close channels 1 5 9 and 11 in the drawer A range of channels for a drawer may be specified by using the syntax lt address gt channell channel2 This format indicates that all channels between lt channeli gt and lt channel2 gt are to be operated The command CLO
17. thus forming command subsystems Throughout this chapter the following conventions are used for SCPI command syntax Square Brackets Enclose optional keywords or parameters Braces II Enclose possible parameters within a command Triangle Brackets lt gt Substitute a value for the enclosed parameter Vertical Bar Separate multiple parameter choices Bold Typeface Letters Designate factory default values Command Only This indicates the command cannot be used in query form Query Only This indicates the command can only be used as a query The command form without the question mark is not allowed EADS North America Defense SCPI Command Basics 5 1 Test and Services Inc 2001 1257 User Manual To illustrate the SCPI notation a part of the ROUTE command subsystem is shown below ROUTe CLOSe lt channel list gt OPEN lt channel list gt ALL ROUTE is the root keyword of the command This keyword is optional since it is shown enclosed in square brackets CLOSE and OPEN are the next level keywords The ALL keyword is below the OPEN keyword in this command tree The colon is used to separate keywords from different levels on the command tree Each keyword is separated from the next by a single colon The SCPI commands which may be formed by this tree are shown below a lt channel list gt of 1 0 is used in these examples ROUTE CLOSE 1 0 CLOSE 81 0
18. 1 0 Enable Register SRE lt value gt SRE Figure 5 1 IEEE 488 2 Status Reporting Model SCPI Command Basics 5 8 EADS North America Defense Test and Services Inc 2001 1257 User Manual Standard EVENT STATUS Register Figure 5 1 shows four related registers The Standard Event Status Register the Standard Event Status Enable Register the Status Byte Register and the Service Request Enable Register The Standard Event Status Register reflects the present status of the instrument This register consists of eight 1 bit flags Each flag represents a true or false indication of the corresponding condition The bits of this register are EADS North America Defense Test and Services Inc 2001 PON URQ CME EXE DDE Power On Bit 7 MSB Bit weight 128 decimal 80 hexadecimal This flag is set when the instrument is powered on User Request Bit 6 Bit weight 64 decimal 40 hexadecimal This bit is never set by the 1257 and will always read 0 Command Error Bit 5 Bit weight 32 decimal 20 hexadecimal This bit is set when a command error is detected by the 1257 Errors of this type will also result with an error added to the error queue The error may be read using the SYST ERR query to determine the cause of the error Execution Error Bit 4 Bit weight 16 decimal 10 hexadecimal This bit is set when a valid command is received but cannot be executed for some reason For example an
19. 1257 chassis in this configuration The 1257 is also available in a configuration where the system is reverse rack mounted shown in Figure 1 6 and a separate 2U high remote unit shown in Figure 1 5 These options are also available in a standard 5U Figure 1 7 and 6U Figure 1 8 EIA height Fuse Cover ON OFF oO AC Input RS 232 Connection IEEE 488 Connection RJ45 Ethernet ao Trigger IN ee Trigger OUT o H j Figure 1 3 1257 Features Rear Panel EADS North America Defense Introduction 1 3 Test and Services Inc 2001 Introduction 1 4 a H 25 1257 User Manual Figure 1 4 Dimensions 2 Rt o o o p TS a e DO DD He PRS EI e ei e 1 Ei c E Ve S Se Hel D e ei eg 1 wy 22 s f RE
20. 5 31 Nartiing a EE 5 31 Defining Fath INUIT S ake es Nae cca eos casas aati retos eee daa meee ere Oe 5 32 Removing Path Namie o quei eei ster uite perse Due Roni Loci i Casse Ee reg 5 33 Reading the Presently Defined Path Names seeeeeeeeeeeeeee 5 33 Reading the Channel List for a Path Name enn 5 34 Storing Path Names in Non Volatile Memory eseeeeeeeennmmee 5 34 Closing Ne 5 35 Opening n 5 36 Checking tor Installed Drawers oe ote er EE e E ENEE Eed Red 5 37 System COrimarids oigo ee toa IER DAN x eausa t E cnn Te IM E ui e 5 37 Reading A Stee EE 5 37 SCPI Version Raten le EE 5 38 User Intertace Lockout cae eee teer a Here bre HRK ENEE 5 39 el E e Ee E 5 40 1257 User Manual eal beet 6 1 SCPI COMMAND REFERENCE EN 6 1 ENT EE 6 1 aaa DE 74 ADVANGED SOPLOPEPUATIONS seit nua siasasnddanedakiod PM io NEE 7 1 daten c C 7 1 Using ROUTE CONFIGURE to Control Switching Sequence sese 7 1 ao LSS sec EE 7 2 B raogzbieibo ANI A ce cece utc ciate edt suche seat teens ie caida aa seus gle hs daa aiaa 7 5 Using External Triggering EE 7 7 Selecting EN Keele Te tee 7 7 Selecting the Trigger Count EE 7 8 Selecting a Trigger RE 7 8 Arming and Disarming the EE 7 9 Generating a Single Trigger ENEE 7 10 Output Trigger Signals from the EE 7 11 Selecting an Output Trigger Destpnaton AAA 7 11 Using Scan Lists and External Trigger
21. 81 8 CLOSE 81 15 17 EADS North America Defense Advanced SCPI Operations 7 5 Test and Services Inc 2001 1257 User Manual The first command establishes an exclude list of channels 0 through 7 and another for channels 8 through 15 The second command closes channel 0 The third command closes channel 8 This command will cause channel 0 to open since both channels are on the exclude group together The fourth command closes channel 17 Channel 15 is never closed since it is excluded by channel 17 Channel 8 is opened prior to closing channel 17 since channels 8 and 17 are on the exclude group together The INCLUDE and EXCLUDE relationships of channels can cause multiple closures and openings when commanding a single channel to close For example assume the following commands have been executed INCLUDE 1 0 5 10 12 INCLUDE 1 13 19 EXCLUDE 1 0 13 EXCLUDE 1 1 14 EXCLUDE 1 2 15 CLOSE 1 0 After these commands have been executed channel 0 is closed Also channels 1 through 4 10 and 12 are closed since these are on the same include list as channel 0 Now if the command CLOSE 1 13 is executed the following actions occur A Channel 0 is opened since it is on an exclude list with channel 13 B Channels 1 2 3 4 10 and 12 are opened since they are on an include list with channel O C Channel 13 is t
22. Closed 5 Press the fourth key to confirm the closure of the channel The relay then closes and the display shows OPERATIONS Drawer 1260 CDS Channel 104 Status Closed Pressing any other key cancels the change To open a relay follow the steps given in the above section Closing a Relay except in step 4 rotate the knob until the display reads OPERATIONS Drawer 1260 CDS Channel 104 Set to Open Then press the fourth key to confirm the opening of the relay Pressing any other key cancels the change If you have difficulties using the 1257 Switching System refer to Appendix C TROUBLESHOOTING to resolve the problem If the problem persists refer to Chapter 9 PRODUCT SUPPORT for instructions on contacting EADS North America Defense Test and Services for assistance EADS North America Defense Test and Services Inc 2001 1257 User Manual The 1257 accommodates a large volume of optical microwave Switching and and general purpose switches which gives it exceptionally high Heat Dissipation density switching capability When switching a large quantity of signals near the maximum rated loading current a drawer generates heat due to the resistance of its conducting paths relay contacts and actuators typically motors or solenoids To prevent excessive heat certain guidelines apply regarding the maximum number of channels that may carry full rat
23. Defense Test and Services Inc 2001 1257 User Manual number Line 4 of the display shows the state of the channel 100 relay OPERATIONS Drawer 1260 CDS gt Channel 100 lt Status Open 3 Rotate the knob one click to the right to view the state of the next relay channel channel 101 OPERATIONS Drawer 1260 CDS gt Channel 101 lt Status Closed 4 Rotate the knob right or left to scan through the channels as desired Path Control Menu Description The Path Control Menu automatically retrieves pathnames stored in non volatile memory at startup and provides the user with direct control of pathnames from the 1257 front panel display It allows the following operations e View the states of pathnames closed or open in the system e Set pathname filter masks to wildcards or to specific characters to limit the display of pathnames to those meeting particular user criteria Defining a Path The 1257 front panel enables the user to manually close or open pathnames after they have been defined remotely using the SCPI path definition command through one of the remote interfaces Refer to Naming a Path section in Chapter 5 for more details on defining path names Once a path is defined through a remote interface it is immediately available for display and use on the front panel and will remain visible until either 1 the power is removed from the system or 2
24. E ed 9 3 ER e ei q S gt acre SES Ss Fs Sz SSj SS gs E E e e Je d Ra CO e i 5 e uu j8 L D asi d gien 3 es 0 o E Li i i 5 H EN ge E e Er pos a g T x e pen iaa HE i Te 1 bebe 9 o o e TA 9 P S Nf My al e E S n 3 E cl il e e a 0 0 e 000 D me e m 0 Oo 0 EADS North America Defense Test and Services Inc 2001 1257 User Manual Figure 1 5 2U High Remote Unit AC Input and I O Connector on Rear e Figure 1 6 Reverse Rack Mounted EADS North America Defense Introduction 1 5 Test and Services Inc 2001 1257 User Manual H Oo il Oo 8 720 C E 7s a mm Cc O O 4 Figure 1 7 5U Front Panel Display O O O O 10 469 ER em CO SES SS B SE cS O Y Powerful Software Introduction 1 6 Figure 1 8 6U Front Panel Display The 1257 provides extensive software capabilities including Exclude Lists Allows you to prevent simultaneous closure of switches in a specified exclude group The switches are then mutually exclusive Include Lists Reduces programming effort When two or more modules are on an include list they respond simultaneously to a command sent to any of them EADS North America Defense Test and Serv
25. Note that this is the opposite state from the CLOSE query EADS North America Defense Test and Services Inc 2001 1257 User Manual The MOD LIST command may be used to query the 1257 for the drawer type present in the system Checking for Installed Drawers ROUTe MODule LIST module address As an example if a 1257 contains a 1260 6014 drawer and if the following command was executed MOD LIST the reply would be 1 1260 601A SPECIAL MATRIX The command can also be queried with the drawer number MOD LIST 81 Where the reply would be the same 1 1260 601A SPECIAL MATRIX This command is NOT defined in the SCPI standard This command follows the syntax rules of SCPI to implement this functionality Svstem The 1257 instrument supports several system commands These y commands generally access errors SCPI standard information as Commands well as user interface issues Additionally the 1257 uses a special command to update non volatile memory Reading Error Whenever an error is encountered by the 1257 it will perform two Messages actions 1 One of the bits of the Standard Event Status Register will be set This register may be read using the ESR query 2 An error message will be added to the error message queue The error message queue may be read using the SYSTEM ERROR query or SYST ERR Consult Appendix B for a list of error messages and mo
26. SRAM Using the Front Panel 2 Save the image to non Controls under the heading Store Recall Menu volatile memory The reason for this implementation is that non volatile memory is inherently much slower than SRAM By saving the image to non volatile memory just one time instead of performing a separate block write for each piece of data the slow non volatile write cycle is encountered just once Troubleshooting C 6 EADS North America Defense Test and Services Inc 2001 1257 User Manual INDEX AC power 2 1 2 2 automatic lockout 5 44 baud rate 4 19 4 21 4 28 bus trigger 5 22 CLOSE 5 2 5 3 5 4 5 19 5 23 5 28 5 30 5 32 5 35 5 36 5 38 5 39 5 40 CME 5 10 Command Error 5 10 Command Input Buffer 5 27 command set 5 15 5 17 confidence mode 4 14 controls 2 5 4 11 4 12 4 18 4 25 CTS 4 16 4 19 4 20 5 27 data bits 4 28 DCE 4 14 4 15 DDE 5 11 DEFINE 5 3 5 31 5 33 5 35 5 37 5 38 delay 4 24 Device Dependent Error 5 11 DHCP Addressing 4 5 discrete parameters 5 26 DTE 4 14 4 15 echo 4 32 EOL 4 22 4 23 4 25 5 5 error code 5 22 5 42 error message 5 11 5 19 5 28 5 42 Ethernet 3 13 4 1 4 2 4 3 4 4 Exclude Lists 5 19 EADS North America Defense Test and Services Inc 2001 EXE 5 10 Execution Error 5 10 firmware revision 4 31 5 18 flow control 4 19 4 20 4 28 5 27 5 28 front
27. Scan Lists channels This feature is known as a Scan List When a Scan List is used the user defines a list of channels to operate Each time a trigger is received by the 1257 the presently closed channel is opened and the next channel on the list is closed This capability may be used in conjunction with a Digital Multimeter DMM or other measurement device to allow a group of measurements to be made without having to program the 1257 for each relay operation For example without the Scan List feature for each DMM reading Advanced SCPI Operations 7 12 EADS North America Defense Test and Services Inc 2001 1257 User Manual you must A Program the 1257 to close a channel B Wait Query the 1257 to ensure the channel is closed C Program the DMM to take a reading D Program the 1257 to open a channel With the Scan List feature the DMM and 1257 are programmed to trigger each other for each DMM reading After this sending a trigger to the 1257 intiates the cycle of Close Relay Take DMM Reading Open Relay automatically When all of the desired readings have been made the DMM may be read to obtain the group of measurements This method usually results in increased measurement rate by minimizing the command processing time of the instruments involved To set up the Scan List the programmer must A Program the 1257 to define the list of channels to scan through using the SCAN command B Program the 1257
28. Services Inc express written consent or misuse of any product or part The warranty also does not apply to fuses software non rechargeable batteries damage from battery leakage or problems arising from normal wear such as mechanical relay life or failure to follow instructions This warranty is in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular use The remedies provided herein are buyer s sole and exclusive remedies For the specific terms of your standard warranty or optional extended warranty or service agreement contact your EADS North America Defense Test and Services Inc customer service advisor Please have the following information available to facilitate service 1 Product serial number 2 Product model number 3 Your company and contact information You may contact your customer service advisor by E Mail Helpdesk eads nadefense com Telephone 1 800 722 3262 USA Fax 1 949 859 7309 USA RETURN of PRODUCT Authorization is required from EADS North America Defense Test and Services Inc before you send us your product for service or calibration Call or contact the Customer Support Department at 1 800 722 3262 or 1 949 859 8999 or via fax at 1 949 859 7139 We can be reached at helodesk eads nadefense com PROPRIETARY NOTICE This document and the technical data herein disclosed are proprietary to EADS North America Defense T
29. a letter MOD DEF 4ASDF 1 Incorrect for SCPI compatibility only the drawer name is 13 characters long and it must be lt 12 MOD DEF A123456789012 1 The following examples show how to use drawer names in place of the drawer address EADS North America Defense Test and Services Inc 2001 1257 User Manual Removing Drawer Names Assigns the name matrix to the drawer MOD DEF matrix 1 Closes channel 23 of matrix CLOSE matrix 23 Close Matrix channels 7 through 12 CLOSE matrix 7 12 The MODULE DELETE command may be used to delete a drawer name The MODULE DELETE ALL command may be also used to remove all drawer names The syntax for these commands is ROUTe MODule DELete module name ALL The following examples illustrate the use of this command Removes the name scanner ROUTE MODULE DELETE scanner Removes the name matrix MOD DEL matrix Remove all names MOD DEL ALL EADS North America Defense SCPI Command Basics 5 29 Test and Services Inc 2001 Reading the Presently Defined Drawer Names Reading the Module Address for a Drawer Name SCPI Command Basics 5 30 1257 User Manual The MODULE CATALOG command may be used to read back the presently defined module names The format for this command is ROUTe MODule CATalog The reply to this command consists of the presently defined
30. an output trigger pulse each time a relay operation has been completed The output trigger pulse may be placed on the external trigger output found on the rear panel of the 1257 Refer to Figure 7 1 Using External Trigger In and External Trigger Out for connector location and signal information This trigger pulse may be used to inform other instruments that the relay s have settled and a new measurement may take place The OUTPUT TRIGGER command is used to enable or disable the external trigger line The syntax for this command is OUTput TRIGger STATe ON 1 OFF O Once the trigger output is enabled it may be disabled by A Deselecting the line using the OFF parameter B Sending the RST command For example the following commands may be sent To enable the external trigger output OUTPUT TRIGGER ON To disable the external trigger output OUTP TRIG 0 The present destination for the trigger output pulse may be read by sending each of the following queries OUTPUT TRIG If the trigger output is disabled the reply to this query will be a 0 If an output trigger is enabled the reply will be 1 A delay may also be used to prevent the trigger form getting to the UUT until a certain time has passed OUTP DELay output trigger delay time EADS North America Defense Advanced SCPI Operations 7 11 Test and Services Inc 2001 1257 User Manual This produces a del
31. bit 5 OR Status Byte bit 7 AND SRE bit 7 where the SRE is the Service Request Enable Register ESB Event Summary Bit Bit 5 bit weight 32 decimal 20 hexadecimal This bit is set when one of the enabled Standard Event Status Enable Register bits is set The previous paragraphs describe the formation of the ESB bit MAV Message Available Bit 4 bit weight 16 decimal 10 hexadecimal This bit is set when there is a message in the output buffer of the 1257 All other bits 8 2 1 and 0 of the Status Byte are not assigned and will always return 0 When the MSS transitions from a 0 to a 1 the GPIB SRQ interrupt is generated The MSS will remain 1 until all enabled bits of the Status Byte have returned to 0 SCPI Command Basics 5 12 EADS North America Defense Test and Services Inc 2001 1257 User Manual SERVICE Register The Service Request Enable Register is used to individually enable bits in the Status Byte to set the MSS bit of the Status Byte ENABLE Register thereby generating an interrupt When the bit of the Service Request Enable bit is set and the corresponding bit of the Status Byte Register is set then the MSS bit will be a 1 The following IEEE 488 2 Common Commands relate to the Status Reporting Model CLS Clear status ESE Set the Standard Event Status Enable register ESE Read the Standard Event Status Enable register ESR Read the Standard Event Status register SRE Set the Servi
32. click on Connect To test the communications between the computer and the 1257 type the following command IDN Then press Enter The 1257 should respond with Racal Instruments 1257 Switch System 03 10 The number at the end of the response is the firmware revision number which may differ from what is shown above EADS North America Defense Computer Interfaces 4 29 Test and Services Inc 2001 Computer Interfaces 4 30 1257 User Manual NOTE The version of HyperTerminal that is shipped with Microsoft Windows may not echo characters to the screen properly An updated version is available from Hilgraeve Inc at http www hilgraeve com The new version is called HyperTerminal Private Edition EADS North America Defense Test and Services Inc 2001 1257 User Manual Chapter 5 SCPI COMMAND BASICS SCPI Command Overview Input Format The 1257 accepts commands via either the GPIB or serial interface 1257 commands follow the rules defined by the SCPI standard SCPI is an acronym for Standard Commands For Programmable Instruments and defines standard command names and syntax rules for commands to the instrument and replies from the instrument SCPI is an ASCII based instrument command language designed for test and measurement instruments SCPI commands are based on a hierarchical structure known as a tree system In this system associated commands are grouped together under a common root
33. e f the main network used to connect the 1257 or other Ethernet enabled test equipment is highly congested consider isolating the test system computers and Ethernet enabled test equipment into sub networks This can be accomplished by using a network switch as opposed to an ordinary hub The switch will keep unrelated traffic off the sub network and therefore reduce congestion Connecting the Use a Cat 5 Ethernet cable to connect the rear panel RJ 45 TCP IP Ethernet connector on the 1257 to the RJ 45 TCP IP port Ethernet Cables of the host computer Refer to Figure 4 1 Connecting the Ethernet Interface Figure 4 1 Connecting the Ethernet Interface To Ethernet Connector TCP IP Ethernet Connector CAT 5 Ethernet Cable Selecting the Before using the Ethernet interface to control the 1257 you must Ethernet Interface select the Ethernet interface via the front panel controls 1 Press the top key Rotate the knob until the top line reads SETTINGS lt 2 Select line 2 next to top line by pressing the second key This EADS North America Defense Computer Interfaces 4 3 Test and Services Inc 2001 Entering the Ethernet Communication Settings Computer Interfaces 4 4 1257 User Manual selects line 2 so that you may select the type of setting to work with ecce SETTING gt Type Display lt Option Format Status Decimal 3 Select the remote interface setting
34. member must be assigned a unique address This address can be set only by means of the front panel controls Set the address to a number from 0 to 31 as follows 1 Press the top k ey Rotate the knob until the top line reads SETTINGS lt 2 Select line 2 next to top line by pressing the second key This selects line 2 Seu SETTINGS gt Type Display lt Option Format Status Decimal 3 Select the GPIB settings mode by rotating the knob until line 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual Service Request SRQ reads as shown below lines 3 and 4 may differ Se ate SETTINGS gt Type GPIB lt Option Lockout Status Disabled 4 Press the third key to select line 3 of the display Rotate the knob until line 3 reads as shown below Ge SETTINGS Type GPIB gt Option Address lt Status 14 5 If line 4 of the display already indicates the desired address number then no further action is necessary Otherwise press the fourth key Rotate the knob until line 4 indicates the desired address In this example 15 is the desired address nues SETTINGS Type GPIB Option Address lt Update 15 Then press the fourth key to confirm the update Pressing any other button cancels the change NOTE Menu preferences are not normally retained after the power is re
35. one click to the right to view the next choice for the channel status e OPERATIONS T Drawer 1260 CDS din j Channel 102 e Set to Closed On the fourth line the 1257 asks whether to close the channel 9 Press the fourth keypad switch for the second time to confirm that the relay channel should be closed press any other key to cancel The display then shows the updated relay status CORSA OPERATIONS UTE Drawer 1260 CDS d gt d Channel 102 e Status Closed EADS North America Defense Using the Front Panel Controls 3 5 Test and Services Inc 2001 1257 User Manual In the above example the user starts at the top of the menu hierarchy and proceeds downward through the following levels Level i Menu type OPERATIONS PATH CONTROL SETTINGS STORE RECALL SYSTEM This example used OPERATIONS Level 2 Drawer type Informational only as it cannot be selected or changed other than by installing a different type of drawer Level 3 Channel number Selects the relay channel to control Level 4 Status Shows whether the relay is open or closed and lets the user change the status The above example illustrates that the user interface has a hierarchical menu structure The top line shows the top level of the menu The second third and fourth lines show successively lower levels of the hierarchy Some menu
36. panel 5 43 fuse 2 1 Gateway 4 8 GPIB 3 13 4 1 4 10 4 11 4 12 4 12 4 13 4 18 5 1 5 4 5 7 5 8 5 14 5 17 5 22 5 27 5 28 5 29 GPIB interface 4 11 4 12 5 4 5 27 half duplex 4 23 5 5 IEEE 488 2 5 4 10 4 14 5 7 5 8 5 9 5 14 5 14 5 16 5 17 5 19 5 20 5 22 5 24 5 29 IMM 5 26 linefeed 5 4 5 5 5 28 local echo 4 23 lockout 5 44 manual lockout 5 44 Master Summary Status 5 13 MAV 5 13 5 29 Message Available 5 13 modem 4 15 4 16 module name 5 20 5 31 5 32 5 32 5 33 5 34 5 35 5 37 5 38 7 18 7 19 7 19 7 20 MSS 5 13 5 14 5 17 non volatile memory 5 5 5 8 5 19 5 20 5 21 5 28 5 34 5 38 5 42 5 44 7 18 7 19 7 19 7 20 Index 1 non volatile update 5 45 null modem 4 15 numeric parameters 5 25 OPC 5 7 5 8 5 11 5 18 5 28 OPEN 5 2 5 19 5 23 5 28 5 35 5 39 5 40 Operation Complete 5 11 5 18 Operation Status Enable Register 5 15 5 23 Operation Status Event 5 12 5 13 5 15 5 23 Operation Status Event Register 5 13 5 15 5 23 OSE 5 12 parity 4 24 4 28 path name 5 20 5 35 5 36 5 36 5 37 5 37 5 38 5 45 PON 5 10 5 12 Power On 5 10 5 19 Query Error 5 11 Questionable Status Enable Register 5 15 Questionable Status Event Register 5 15 5 24 QYE 5 11 5 12 5 29 recall 5 20 remote interface 4 12 Reply Output Buffer 5 29 Request Control 5 11 ROUTE 5 2 5 3 5 4 5 19 5 26 5 3
37. revision numbers of the boot ROM and flash program This information may be valuable when contacting customer service to resolve a problem Viewing Firmware Revision Numbers To view the revision letters of the firmware follow these steps Using the Front Panel Controls 3 23 Complete Menu Listing Using the Front Panel Controls 3 24 1257 User Manual 1 Press the top key Rotate the knob until the top line reads 2 The display will appear similar to the following Firmware Revisions Boot 1 Flash The third and fourth lines indicate the revision numbers of the boot ROM and the operating program that is currently stored in flash memory The numbers shown on the actual instrument may not correspond to those shown in this example For quick reference this section lists the complete menu hierarchy for the 1257 Switching System Menu items are indented according to their levels of hierarchy For example LEVEL 1 top line of display LEVEL 2 second line of display LEVEL 3 third line of display LEVEL 4 fourth line of display The complete menu listing is as follows OPERATIONS Plug In slot number and model number to control State of channel relay or digital I O Close or Open relay PATH CONTROL Filter Mask Pathname Close or Open relay SETTINGS Remote Source GPIB RS 232 TCP IP Lockout Disabled Enabled RS 232 Baud Rate 1 200 2 400 EADS North America Defense Test and Serv
38. see terminal Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the Data Bits Stop Bits and Parity Number of data bits setting Set number of data bits of 1257 of 1257 not matched to to match that of the data number of bits for terminal terminal see Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the Data Bits Stop Bits and Parity e Slow data terminal e Set number of stop bits of 1257 response usually when to 2 see Chapter 4 GPIB and using an older terminal RS 232 Interfaces under the heading Setting the Data Bits Stop Bits and Parity EADS North America Defense Troubleshooting C 3 Test and Services Inc 200 PROBLEM POSSIBLE CAUSES e Baud rate too high for cable and terminal being used 1257 User Manual WHAT TO DO e Change to a lower baud rate Make sure that the new 1257 baud rate matches the new terminal baud rate to set the 1257 baud rate see Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the Baud Rate Text from 1257 to remote terminal overwrites itself staying on one line Text from 1257 to remote terminal is double spaced lines of text are separated by blank lines Remote terminal does not display characters that are typed Troubleshooting C 4 Cable is excessively long or not of high quality Termination characters of 1257 not compatible with terminal setup Term
39. sent to the GPIB address currently assigned to the 1257 to set the 1257 GPIB address see Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the GPIB Address e The 1257 is set to the same Make sure that the 1257 is set GPIB address as another to a unique GPIB address to device in the system set the 1257 GPIB address see Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the GPIB Address Drawers PROBLEM POSSIBLE CAUSES WHAT TO DO Drawer indicates an empty e Drawer not properly seated Loosen the retaining screws of slot on the front panel in slot the drawer Pull the drawer display part way out then gently push it back in until it stops Then press it firmly to seat its connector with the backplane connector When properly installed the panel of the drawer is flush with the rear panel of the 1257 EADS North America Defense Troubleshooting C 5 Test and Services Inc 200 1257 User Manual Non Volatile Memory PROBLEM POSSIBLE CAUSES WHAT TO DO Switch states or menu e Switch states and menu e After saving switch states or settings that have been settings must be saved ina menu preferences to the saved to non volatile memory two step process image save the image to non are lost the next time power 1 Save to the non volatile volatile memory before turning is turned on memory image located power off see Chapter 3 in
40. the knob until the top line reads ETTI Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads Type Display ETTI Type Display Option Format Status Hex Press the third key to select line 3 of the display option Then rotate the knob until line 3 of the display reads as follows ETTI Type gt Option Status Display Intensity lt 75 If line 4 already shows the desired intensity then no further action is necessary Otherwise select line 4 Then rotate the knob until line 4 shows the desired intensity This example uses 50 Puce SETTINGS Type Display Option Intensity Update 50 Then press the fourth key bottom to update the status Pressing any other key cancels the change Enabling or Disabling the Screen Saver The purpose of the screen saver is to maximize the life of the fluorescent display The screen saver automatically turns the display off after no controls have been operated for a certain time interval To set this time interval refer to Setting the Screen Saver Timeout later in this section To enable or disable the screen saver proceed as follows 1 Press the top key next to the display Rotate the knob until the top line reads ETTI Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads
41. the remote interface settings mode by rotating the knob EADS North America Defense Computer Interfaces 4 11 Test and Services Inc 2001 Setting the GPIB Address Computer Interfaces 4 12 until line 2 read 1257 User Manual s as shown below lines 3 and 4 may differ speres SETTINGS gt Type Remote lt Option Lockout Status Disabled 4 Press the third key to select line 3 of the display Rotate the knob until line 3 indicates the Source option as shown below oes ear SETTINGS Type Remote Option Source lt Status GPIB 5 If line 4 of the then the GPIB display already indicates the status as GPIB interface is already active no further action is necessary Otherwise press the fourth key Rotate the knob until line 4 indicates GPIB E SETTINGS Type Remote Option Source Update GPIB Then press the fourth key to confirm the update Pressing any other button ca ncels the change NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up The 1257 as a GPIB bus
42. unit without Slides 1 Determine the mounting placement of the 1257 in the rack 2 Install either user provided right angle runners or a baseplate to support the weight of the 1257 chassis 3 Insert the 1257 chassis onto the runners or the baseplate Right angle runners already installed PM E e Lb el a Ge Figure B 2 Rack Mounting EADS North America Defense Rack Mounting B 3 Test and Services Inc 2001 1257 User Manual This page was left intentionally blank Rack Mounting B 4 EADS North America Defense Test and Services Inc 2001 1257 User Manual Appendix C Troubleshooting How to Use this If you have difficulty using the 1257 Switching System refer to e the following troubleshooting tables If you are still unable to ection resolve the problem contact the EADS North America Defense Test and Services Customer Support Department refer to Chapter 8 PRODUCT SUPPORT Power Up PROBLEM POSSIBLE CAUSES Unit does not turn on fan not Not connected to proper running blank display and power source no indicator lights e Fuse missing blown or incorrectly installed EADS North America Defense Test and Services Inc 200 WHAT TO DO e Make sure that the 1257 is connected to a live power source using a functional power cord For input power requirements see Chapter 2 Getting Started under the heading Main AC Power Check fuse ver
43. volatile memory and allow them to be restored during instrument power up Store Recall Menu Description After the user has set up the 1257 Switching System the setup may be stored in non volatile flash RAM Later the user may recall this setup to instantly restore the 1257 to the same state it was in earlier The STORE RECALL menu contains the functions used for doing this The non volatile RAM can store two types of setup information switching states and menu preferences Storing the Switching State The switching state includes the positions closed or open of all relays The 1257 stores the state of the drawer as a single state When a Using the Front Panel Controls 3 20 EADS North America Defense Test and Services Inc 2001 1257 User Manual switching state is recalled it automatically restores the states of all relays and digital outputs on the drawer The 1257 can store up to 100 switching states or presets plus an additional state that is restored automatically when the power is turned on NOTE After storing the switch state the non volatile image must be written to non volatile RAM Refer to the section Updating Non Volatile RAM for instructions Storing the Menu Preferences Menu preferences include all preferences set by the user such as remote interface settings GPIB address display intensity and display format The 1257 stores all menu preferences together as a single state The 1257 c
44. 1257 for verification and confidence mode checks Verification is somewhat different than confidence mode which is enabled with the MONITOR STATE command With confidence mode enabled the 1257 verifies the state of all relays in a system against expectations after performing any relay state changes i e open or close commands The result of this test is a high level pass or fail indication for the entire system Confidence mode therefore has the ability to quickly test a system but it is unable to resolve or identify the exact cause of the failure if one is detected Unlike confidence mode relay verification can be initiated by the user on a channel by channel basis and can be performed at anytime not just at relay state changes To be able to perform relay verification properly several steps need to be performed 1 Set the proper verification mask indicating whether the readback channel is normal inverted or don t care A channel s mask defaults to don t care For drawers utilizing open drain drivers virtually all 1260 series drawers the readback signal will be pulled low by the driver when the driver is enabled high or on state For these types of drawers the verification mask should be manually set to the inverted mode of operation 2 Issue a verification command for the relays or range of EADS North America Defense Advanced SCPI Operations 7 17 Test and Services Inc 2001 1257 User Manual relays of interest
45. 2 5 36 RQC 5 11 RS 232 2 5 3 13 4 1 4 14 4 15 4 16 4 18 4 19 4 20 4 21 4 22 4 23 4 23 4 24 4 25 5 4 5 5 5 7 5 8 5 27 5 28 RS 232 interface 2 5 4 14 4 18 4 23 4 24 4 25 5 4 Index 2 1257 User Manual RS 232 parameters 4 23 4 25 RTS 4 16 4 19 4 20 5 27 safety 5 27 SCPI 2 5 4 14 5 1 5 2 5 3 5 4 5 13 5 14 5 19 5 22 5 24 5 25 5 31 5 32 5 34 5 40 5 42 5 43 5 45 7 18 7 19 7 19 self test 2 4 5 7 5 20 service 4 13 4 14 8 1 service request 4 13 4 14 Service Request Enable Register 5 10 5 13 5 14 5 15 5 17 5 18 SRQ 4 14 4 13 5 8 5 14 5 18 5 22 Standard Event Status Enable Register 5 10 5 12 5 13 5 15 5 15 5 16 5 18 Standard Event Status Register 5 10 5 12 5 14 5 15 5 16 5 18 5 29 5 42 Static Addressing 4 6 status byte 5 7 5 12 5 14 5 21 5 22 5 29 stop bits 4 23 Sub Net Mask 4 8 system commands 5 42 TCP IP 3 13 4 1 TCP IP Address 4 7 Trigger Input Delay 5 19 Trigger Input Source 5 19 Trigger Output Delay 5 19 trigger source 5 22 5 23 URQ 5 10 User Request 5 10 Waiting For Arm 5 22 warranty 8 1 XON XOFF 4 19 4 20 5 27 EADS North America Defense Test and Services Inc 2001
46. 2 is active Local Mode Lockout then the 1257 is in Manual Lockout mode To restore controls send a SYST KLOCK OFF command to the 1257 via remote interface EADS North America Defense Test and Services Inc 2001 1257 User Manual PROBLEM POSSIBLE CAUSES WHAT TO DO Display is too dim or too e Display intensity needs to e Set display intensity see bright be set to personal Chapter 3 Using the Front preference Panel Controls under the heading Enabling or Setting the Display Intensity RS 232 Remote Interface PROBLEM POSSIBLE CAUSES WHAT TO DO Remote terminal receives e Upon turn on the 1257 e Ignore unintelligible text that is unintelligible text from 1257 sends data at 115 200 received immediately after but only immediately after baud to the RS 232 to power turn on power turn on Text is synchronize a flash properly received later on programmer if present Unintelligible characters on a normal terminal at power up are expected if terminal baud rate is not set to 115 200 Remote terminal receives e Baud rate of 1257 not e Set baud rate of 1257 to match unintelligible text from 1257 matched to baud rate of that of the data terminal see No intelligible text is received terminal Chapter 4 GPIB and RS 232 at all Interfaces under the heading Setting the Baud Rate Parity setting of 1257 not Set parity of 1257 to match that matched to parity of of the data terminal
47. 257 automatically performs a self test immediately after power is applied The self test completes within ten seconds after power application If a failure is detected a message appears on the front panel display If this occurs refer to Appendix C TROUBLESHOOTING to solve the problem If the self test does not detect a problem the front panel display will show the main menu The top line line 1 of the display appears as follows OPERATIONS The contents of lines 2 through 4 depend upon what type of drawer is plugged into the 1257 Getting Started 2 4 EADS North America Defense Test and Services Inc 2001 1257 User Manual Verifying the Installed Drawer Closing a Relay The front panel controls provide a way to verify whether a drawer is plugged in and detected by the 1257 For example suppose the following drawer is installed 1260 CDS You may verify the installation of these drawer as follows 1 Press the top key on the keypad next to the display see Figure 1 2 Rotate the knob until the top line reads OPERATIONS amp o The markers gt and lt indicate that this line has been selected by pressing the corresponding button When a line is selected rotating the knob changes the contents of that line 2 View line 2 next to top line by pressing the key just below top key The display describes the drawer that is in slot 1 OPERATIONS
48. 257 is ready to use as soon as the custom drawer has been inserted Flexible Controller Interface The controller host computer may communicate with the 1257 using either IEEE 488 GPIB or RS 232 interfaces This allows an external computer to automate the operation of the 1257 Front Panel Controls The front panel controls provide an intuitive user interface for manually controlling the drawer and setting user preferences The front panel controls provide access to all interface parameters such as GPIB address and RS 232 baud rates These controls are often helpful during system setup Command Set Commonality The 1257 supports the Standard Commands for Programmable Instruments SCPI Language This command set is used in other switching platforms such as the 1257 GPIB and 1260 Series VXI For an introduction to the SCPI command set and its usage see Chapter 5 SCP COMMAND BASICS For a complete description of all SCPI commands for the 1257 see Chapter 6 SCPI COMMAND REFERENCE EADS North America Defense Test and Services Inc 2001 1257 User Manual Keypad and LEDs Knob Display Racal Instru Speaker Front and Rear Panels For The Custom Drawer Figure 1 2 1257 Features Front Panel Figures 1 2 and 1 3 show the features of the front and rear panels respectively for a standard forward mounted unit with the drawer located on the rear of the box Figure 1 4 gives the physical dimensions of the
49. A or a character n 2 An ASCII carriage return decimal 13 hex OD or a character r EADS North America Defense Test and Services Inc 2001 1257 User Manual 3 An ASCII carriage return character followed by a linefeed character Because of the variation in termination schemes for serial mode the 1257 must be configured through the front panel user interface to indicate whether it should expect carriage returns only linefeeds only or carriage returns followed immediately by linefeeds To configure termination select GETT INGS on the top most line select Type RS 232 on the second line and Option EOL Mode from the third line and then choose the appropriate setting on the fourth line The default power up state of the instrument is linefeed only To elect a different power up state this setting like all other menu options can be saved to non volatile memory For further details on front panel usage refer to Chapter 3 USING THE FRONT PANEL CONTROLS The 1257 has the ability to interface with terminals and terminal emulation software Unfortunately a wide variation of capabilities exists in terminals terminal emulators Most terminals terminal emulators generally treat the ENTER key as a carriage return operate in half duplex mode and have the ability to add linefeeds to incoming carriage returns To minimize frustration set the terminal terminal emulator to operate in half duplex mo
50. ATH CONTROL 2 Select line 3 by pressing the third key PATH CONTROL Select Filter Mask gt PATH1 lt Status Open 3 Rotate the knob until line 3 indicates the desired pathname PATH2 for this example PATH CONTROL Select Filter Mask gt PATH2 lt Status Open 4 Rotate the knob right or left to scan through the pathnames as desired Each pathname when displayed will indicate whether it is open or closed on the fourth line of the display Setting Filter Masks Since a large number of path permutations may exist for a given drawer it may take time to scroll through all the possibilities if a large number are defined in the 1257 system To minimize scrolling time on the display filter masks can be easily set from the front panel to limit the pathnames displayed to only those that meet user specified criteria Setting filter selection masks is performed easily as follows EADS North America Defense Using the Front Panel Controls 3 11 Test and Services Inc 2001 1257 User Manual 1 Press the top key next to the display Rotate the knob until the top line reads gt PATH CONTROL 2 Select line 2 next to the top line by pressing second key The display shows line 2 as being selected and will show a flashing cursor on the first position of the mask wildcards are the default and appear as an asterisk PATH CONTROL DORCKCKkCk Ck kk k ck KKK KKK kk kc
51. AVe Command Only 5 34 RECall Command Only MODule 5 29 5 30 5 31 5 37 CATalog Query Only 5 30 LIST module list Query Only 5 37 DEFine module name gt module number 7 4 DEFine lt module name gt 5 30 no module number for query DELete 5 29 NAME module name gt Command Only SAVe Command Only 5 31 RECall Command Only 5 31 CONFigure module list BBM MBB IMMediate BBM 7 1 no relay mode for query CONFigure module list 7 1 EXCLude channel list 7 5 no exclude list EXCLude 7 5 DELete channel list 7 5 ALL 7 5 INCLude channel list 7 2 INCLude 7 2 DELete channel list 7 2 7 3 ALL 7 2 7 3 INCLude EADS North America Defense Test and Services Inc 2001 SCPI Command Reference 6 3 1257 User Manual Table 6 1 Continued Command Max Mim Doran Seepage Notes STATe ON OFF 1 0 VERify 7 17 7 19 MASK channel list 0 1 X 7 17 7 18 MASK channel list SAVE 7 19 RECALL 7 19 STATE ON OFF 1 0 7 19 VERify channel list or path name gt VERify ALL Query Only 7 17 SYSTEM Subsystem SYSTem 5 38 5 39 5 40 5 41 ERRor Query Only 5 38 VERSion Query Only 5 39 1994 0 NVUPD NVUPD 5 40 5 41 KLOCK ON OFF 5 39 KLOCK 5 39 STATUS Subsystem STATus PRESet Command Only OPERation EVENt Query Only CONDition Query Only ENABle
52. EADS North America Defense Test and Services Inc 2001 Using the Front Panel Controls 3 18 1257 User Manual Type Display E SETTINGS gt Type Display lt Option Format Status Hex Press the third key to select line 3 of the display option Rotate the knob until line 3 of the display reads as follows e SETTINGS Type Display Option Saver Status Enabled If line 4 already shows the desired status then no further action is necessary Otherwise select line 4 Then rotate the knob until line 4 shows the desired status enabled or disabled This example uses Disabled meh SETTINGS Type Display Option Saver lt Update Disabled Then press the fourth key bottom to update Pressing any other key cancels the change NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up EADS North America Defense Test and Services Inc 2001 Setting the Screen Saver Timeout When the screen saver is enabled it blanks the screen after no controls have been operated for a certain period of time The purpos
53. IP GPIB or RS 232 is active For example after receiving a command via the RS 232 interface the display reads REMOTE OPERATION Using the Front Panel Controls 3 14 EADS North America Defense Test and Services Inc 2001 1257 User Manual RS 232 is active lt Local Mode At this time the knob and all keys are disabled and the 1257 receives commands from the remote interface only The user may restore local control only by issuing a KLOCK OFF command The display then returns to the state that it was in when the 1257 entered lockout mode Manual control is also restored if the user cycles the power to the 1257 Manual lockout When the 1257 receives the command SYST KLOCK ON local lockout via the Ethernet RS 232 or GPIB interface it displays the following message assuming that the RS 232 port is selected REMOTE OPERATION RS 232 is active Local Mode Lockout In this case all front panel controls are disabled The only way to restore local front panel control is to send the command SYST KLOCK OFF via the remote Ethernet RS 232 or GPIB interface For details on sending the commands SYST KLOCK ON and SYST KLOCK OFF refer to Chapter 4 COMPUTER INTERFACES The automatic lockout may be enabled or disabled via the front panel controls if local mode is currently active When lockout is enabled the automatic lockout mode is activated when the 1257 receives any
54. Input 7 12 LA E 7 12 Defining a Scan EIS EES 7 14 Advance Verification Features ore e RP Ire Pn RR RR dace enigeerreiacnede 7 16 CONTIGS e eer 7 16 Using Belay Verificallohs sse odes ive e edet udu EE 7 17 Saving Recalling the Verification Masks AEN 7 18 Automatically Recalling Verification Masks at Startup ssseeese 7 19 vi 1257 User Manual 7 0 cri ee asia ett E A 8 1 PRODUCT SUPPBOE E tie Ro dct pacato de on eh a beet ire E e 8 1 Product Ten EE 8 1 Warranty E 8 1 VAN 1 91 10 EE A 1 SPECIFICATIONS Ems A 1 RSI T A 1 SI E T A 1 Remote ne EE A 1 Lk lee an EE A 2 le A 3 E A 3 MGC ARICA WE A 3 ADPENOIX E B 1 rm disi McMIMMAMR Pc mu B 1 tems IMCIUGSG pem C ea B 1 Installing the 1257 Using Slides and Mounting Brackets sseeeeeee B 1 Installing the 1257 into a Rack without Slides ken B 3 PUD DS CI PM RT CA ursBzHcllsedubcee M T x x ERR C 1 How to Use this Section eere tbe latte eR bl n ER ER R X E Lo Lob e bu Rep RR dun C 1 us b C 1 Ste Ee ene C 2 vii 1257 User Manual RS 232 Remote NMG eege ENEE er C 3 IEEE 488 GPIB Remote Interface ierit tush EENS de EEN ERU ERE Fd ERR NER Eel C 5 BICI C 5 Non Volatile Memory EE C 6 PUN E 1 viii 1257 User Manual List of F
55. N 3 TXD DIN 3 TXD PIN 7 RTS DIN 7 RTS PIN 8 CTS HIN BUT PIN 5 SIGNAL GND PIN 5 SIGNAL GND Figure 4 4a Using the 1257 with a Computer 9 PIN D SUB 9 PIN D SUB CONNECTOR CONNECTOR MALE MALE d SPECIAL NINE PIN RS 232 CABLE CONNECT TO 1256 CONNECT TO MODEM CABLE CONNECTIONS PIN 3 TXD PIN 3 TXD PIN 8 CTS PIN 8 CTS PIN 5 SIGNAL GND HIN 5 SIGNAL GND Figure 4 4b Using the 1257 with a Modem Computer Interfaces 4 16 EADS North America Defense Test and Services Inc 2001 1257 User Manual Selecting the RS 232 Interface EADS North America Defense To use the RS 232 interface with the 1257 the RS 232 interface must be selected via the front panel controls as follows 1 Press the top key Rotate the knob until the top line reads SETTINGS 2 Select line 2 next to top line by pressing the second key This selects line 2 so that you may choose the type of setting to work with SERIE SETTINGS gt Type Display lt Option Format Status Decimal 3 Rotate the knob until line 2 reads as shown below lines 3 and 4 may differ spe SETTINGS gt Type Remote lt Option Lockout Status Dis
56. Option Baud Rate Update 9600 Then press the fourth key to confirm the update Pressing any other button cancels the change Set the RS 232 port of your data terminal or computer to operate at the same baud rate as the 1257 Refer to the user s manual for your terminal for instructions on making these settings If you are using a computer with terminal emulation refer to the user s manual for the terminal emulation software EADS North America Defense Test and Services Inc 2001 1257 User Manual Setting the Message Termination Characters NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up Each message to or from the 1257 must end with an end of line EOL character known as a terminator You may select the EOL terminator to be any one of the following eCarriage return CR only eLine feed LF only for non terminal based applications such as controlling via LabVIEW programs eCarriage return and line feed CR LF The factory default is line feed only To select the EOL terminator proceed as follows 1 Press the top key Rotate the knob until the top line rea
57. PI standard These commands follow the syntax rules of SCPI to implement this functionality Naming a Path A group of channels may also be assigned a name When a group of channels is named it is called a path A path may consist not only of elements that must be closed the closed channel list but also of elements that must be opened the open channel list to complete the path This may at first seem contradictory to close a path with switching elements that must be opened but it nevertheless occurs A good example which illustrates the concept of an open channel list is a typical 1P2T failsafe microwave switch Because this type of switch is failsafe it only requires a single control line By default with no power applied the first throw is always connected to the common Energizing the control line opens the first throw and closes the connection between the second throw and the common Both are obviously mutually exclusive Defining a path through the second throw of the example switch can be done strictly with a close channel list The problem occurs when a path must go through the failsafe throw first throw To make this path the switch must be in an open or off state The open channel list readily accomplishes this task EADS North America Defense SCPI Command Basics 5 31 Test and Services Inc 2001 Defining Path Names SCPI Command Basics 5 32 1257 User Manual The PATH DEFINE command may be used to associate
58. RACAL INSTRUMENTS 1257 SWITCHING SYSTEM PUBLICATION NO 980862 EADS North America Defense Test and Services Inc 4 Goodyear Irvine CA 92618 Tel 800 722 2528 949 859 8999 Fax 949 859 7139 info eads nadefense com sales eads nadefense com helopdesk eads nadefense com http www eads nadefense com EADS NORTH AMERICA DEFENSE PUBLICATION DATE August 10 2004 Copyright 2001 by EADS North America Defense Test and Services Inc Printed in the United States of America All rights reserved This book or parts thereof may not be reproduced in any form without written permission of the publisher THANK YOU FOR PURCHASING THIS EADS NORTH AMERICA DEFENSE TEST AND SERVICES PRODUCT For this product or any other EADS North America Defense Test and Services Inc product that incorporates software drivers you may access our web site to verify and or download the latest driver versions The web address for driver downloads is http www eads nadefense com downloads If you have any questions about software driver downloads or our privacy policy please contact us at info eads nadefense com WARRANTY STATEMENT All EADS North America Defense Test and Services Inc products are designed and manufactured to exacting standards and in full conformance to EADS ISO 9001 2000 processes This warranty does not apply to defects resulting from any modification s of any product or part without EADS North America Defense Test and
59. RS 232 serial port such as the COM port of a personal computer In addition a shielded cable is required for compliance with the radiated emissions standards specified for the 1257 A shielded RS 232 cable suitable for connecting the 1257 to a computer is available from EADS North America Defense Test and Services RS 232 Cable 10 feet 8 meters P N 602248 DTE Versus DCE All equipment with an RS 232 interface must be designed as either Data Communications Equipment DCE or Data Terminal Equipment DTE depending upon the end of the communications link from which it will operate Computers are usually DTE and modems are DCE This allows a straight through connection where connector pins 1 2 3 at one end connect to pins 1 2 3 respectively at the other end The 1257 is designed as DCE to facilitate direct connection to a computer or data terminal DTE Connecting to a modem requires a null modem described in the section Connecting to a Modem Electrical Connection Using a shielded RS 232 cable connect the nine pin female RS 232 connector on the 1257 rear panel to the RS 232 serial port on the computer or data terminal Refer to Figure 4 3 Using the RS 232 Interface A suitable cable is available from EADS North America Defense Test and Services EADS North America Defense Test and Services Inc 2001 1257 User Manual eRS 232 cable 10 ft 3 05 meter P N 602248 This cable has a DB 9 connec
60. SE 81 1 10 closes channels 1 through 10 inclusive in the drawer A range of channels and a list of single channels may be mixed in a command For example the command CLOSE 81 1 10 12 15 17 19 Closes channels 1 through 10 12 15 17 18 and 19 on the drawer EADS North America Defense SCPI Command Basics 5 27 Test and Services Inc 2001 Naming The Drawer Defining Drawer Names SCPI Command Basics 5 28 1257 User Manual A drawer controlled by a 1257 may be given a name This name may be used in place of the address 1 in any command used to control a relay The MODULE DEFINE command MOD DEF may be used to define a name of a drawer The syntax for this command is MOD DEF lt drawer name gt lt drawer address gt The lt drawer name gt is a string of up to 44 characters It must begin with a letter between A and Z After the first letter all other letters may be A Z 0 through 9 and the underscore amp o NOTE The drawer name may be 44 characters However to maintain true SCPI compatibility it must not exceed 12 characters Examples of valid commands are as follows Assigns name A to the drawer MOD DEF A 1 Assigns name to A12345678901 to the drawer MOD DEF A12345678901 1 Examples of invalid commands are as follows Incorrect the drawer name must appear first MOD DEF 1 ABCD Incorrect the drawer name must begin with
61. Serial Poll Enable SPE command Bit 5 is cleared by sending instructions to the 1257 and is set when the 1257 finishes executing a command These transitions coincide with the rising and falling edges respectively of the External Trigger Out signal All status bits are active high The TRG command is required by the IEEE 488 2 specification If the 1257 is armed see the INIT MMEDIATE and INIT CONTINUOUS commands and the trigger source is BUS see the TRIGGER SOURCE command then this will cause the next scan list action to occur This is equivalent to sending a GPIB bus trigger The WAI command is required by the IEEE 488 2 specification This command is accepted but has no effect on the 1257 SCPI defines two additional registers beyond those shown in Figure 5 1 These are the Operation Status Hegister and the Questionable Status Register The Operation Status Register consists of three logical registers a condition register an enable register and an event register The Operation Status Condition Register holds the present condition of various instrument attributes This register is a set of 1 bit flags The conditions assigned to the bits of the register are shown below Waiting For Arm Bit 6 Bit weight 64 decimal 40 hexadecimal This bit is set when a Scan List has been defined but the 1257 is not armed Use the INIT IMMEDIATE or INIT CONTINUOUS command to arm the 1257 EADS North America Defense Test an
62. a name with one or more relays The format for this command is ROUTe PATH Jg DEFine path name gt close channel list open channel list gt The path name gt follows the same name requirements as a module name as described in the previous paragraphs The close channel list and the optional open channel list follows the syntax rules described in the Specifying Relays in Commands section of this chapter The following examples illustrate the use of a path name This associates the name pathi with the close channel list encompassing relays 6 through 9 and relay 77 on plug in drawer PATH DEF pathl 1 6 9 1 77 This associates the name dmm to P177 with the close channel list channels 205 and 305 on the module whose name is defined as matrix PATH DEF dmm_to_P177 matrix 305 205 This associates the name oscope1 with a close channel list for channels 0 and 3 and an open channel list for channel 15 PATH DEF oscope 1 0 3 81 15 Once a path name is defined it may be used in a CLOSE or OPEN command OPEN Gpathl CLOSE 8dmm to P177 CLOSE G8pathl dmm to P177 1 100 110 A CLOSE command for a given pathname will effectively close all channels listed on the close channel list and open those listed on the open channel list An OPEN command for a given pathname will open all channels listed on the close channel list Channels on th
63. abled 4 Press the third key to select line 3 of the display Rotate the knob until line 3 indicates the Source option as shown below pass SETTINGS Type Remote Option Source lt Status GPIB 5 If line 4 of the display already indicates the status as RS 232 then the RS 232 interface is already active no further action is necessary Otherwise press the fourth key Rotate the knob until line 4 indicates the RS 232 interface ee SETTINGS Type Remote Option Source lt Update RS 232 Then press the fourth key to confirm the update Pressing any other button cancels the change NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up Computer Interfaces 4 17 Test and Services Inc 2001 Setting the Flow Control Option Computer Interfaces 4 18 1257 User Manual Description Flow control is a means by which the data terminal or host computer acting as a terminal may pace the flow of data coming from the 1257 so that the terminal has time to properly receive the data It also allows the 1257 to pace commands comi
64. an store one menu preference state which is automatically restored when the power is turned on Storing the Power Up Switching State To store the current switching state as the power up state proceed as follows 1 Press the top key next to the display Rotate the knob until the top line reads 2 STORE RECALL 2 Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads as follows STORE RECALL gt Type State lt Config Defaults Action lt select gt 3 Press the third key to select line 3 of the display option Rotate the knob until line 3 reads STORE RECALL Type State gt Config Powerup lt Action select 4 Press the fourth key to select line 4 of the display Rotate the knob until line 4 reads STORE RECALL EADS North America Defense Using the Front Panel Controls 3 21 Test and Services Inc 2001 1257 User Manual Type State gt Config Powerup lt lt Do Store Press the fourth key bottom to store the power up state Pressing any other key cancels the change NOTE After storing the power up state the non volatile image must be written to non volatile RAM Refer to the section Updating Non Volatile RAM for instructions Updating Non Volatile RAM Writes to non volatile flash RAM are inherently slow If presets
65. and There is no need to open the unit Mounting Brackets 1 Place system on a secure work surface 2 Extend each slide to its full length and by pressing the release levers on the slide remove the instrument mounting extension bar from the rest of the slide 3 Using the hardware found in the slide mount kit P N 921657 026 attach the instrument mounting extension bars to the 1257 Each extension bar requires four fasteners to properly secure the 1257 chassis EADS North America Defense Rack Mounting B 1 Test and Services Inc 2001 1257 User Manual 4 Determine the mounting placement of the 1257 chassis in the rack Once placement has been determined install the short mounting brackets P N 921656 on the front of the rack and the long mounting brackets P N 921656 001 in the rear of the rack with user provided hardware suitable for the rack used Insure that the brackets are installed on the inside surfaces of the mounting rails Using the hardware found in the slide mount kit P N 921657 026 secure the slides to the front and rear brackets installed in the prior step Each bracket will require two fasteners Insert the 1257 enclosure mounting rails into the slide This completes the installation of the slide kit Rack Mounting B 2 Figure B 1 Installing the Slide Kit EADS North America Defense Test and Services Inc 2001 1257 User Manual Installing the 1257 NOTE into a Rack There is no need to open the
66. anual lockout mode the SYSTEM KLOCK ON command must be explicitly issued to prevent local operations In automatic lockout mode any remote command detected by the 1257 puts the instrument in remote mode with lockout mode automatically enabled To allow local access the 1257 must receive a SYSTEM KLOCK OFF command or experience a power cycle event To make a lockout election from the user interface select nt SETTINGS on the top most line select Type Display on the second line and Option Lockout from the third line and then choose the appropriate setting The default power up state of the instrument is automatic mode disabled To elect a different power up state this setting like all other menu options can be saved to non volatile memory For further details on front panel usage refer to Chapter 3 USING THE FRONT PANEL CONTROLS The syntax for this command is shown below SYSTem NVUPD NVUPD The SYSTEM NVUPD and SYSTEM NVUPD query are used to both initiate and determine whether a non volatile update cycle is in progress To improve system reliability and eliminate the need for batteries the 1257 stores configuration information into flash memory The downside of flash memory is that it updates more slowly than battery backed memories To minimize the effects of the flash memory update cycle the 1257 allows individual selections i e include list exclude lists path names menu selections etc to be i
67. atus 75 3 3 Press the third key to select line 3 of the display option Rotate the knob until line 3 of the display reads as follows See SETTINGS Type Display Option Format Status Hex 4 If line 4 already shows the desired format then no further action is necessary Otherwise select line 4 Then rotate the knob until line 4 shows the desired format This example uses Binary SETTI Type Option Update Display Format Binary Then press the fourth key bottom to update the status Pressing any Menu preferences removed from the permanent make other key cancels the change NOTE are not normally retained after the power is instrument To make a menu preference s the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up Setting the Display Intensity The display intensity brightness is adjustable to accommodate different ambient EADS North America Defense Test and Services Inc 2001 ighting conditions It may be set to 25 50 Using the Front Panel Controls 3 17 1257 User Manual 75 or 100 of its maximum brightness To set the display intensity proceed as follows 1 Press the top key next to the display Rotate
68. atus Register bits are latched That is once a bit in the Standard Event Status Register is set it remains set until a CLS command is executed or an ESR Query is executed However the bits of the Status Byte Register change states as the corresponding condition becomes true or false These bits are NOT latched Also the Status Byte is not cleared by reading the register Each bit of the Status Byte remains set until the condition indicated by the bit is no longer present The following bits are assigned in the Status Byte Register All other bits are not used and will return O when read with the STB query OSE Operation Status Event Bit 7 bit weight 128 decimal 80 hexadecimal This bit is set when any of the bits of the Operation Status Event Register are set This bit is NOT shown on the diagram For a description of the Operation Status Event Register consult the SCPI Status Registers section of this chapter MSS Master Summary Status Bit 6 bit weight 64 decimal 40 hexadecimal This bit is set when one or more of the enabled bits of the Status Byte are set In other words EADS North America Defense SCPI Command Basics 5 11 Test and Services Inc 2001 1257 User Manual Status Byte bit 0 AND SRE bit 0 OR Status Byte bit 1 AND SRE bit 1 OR Status Byte bit 2 AND SRE bit 2 OR Status Byte bit 3 AND SRE bit 3 OR Status Byte bit 4 AND SRE bit 4 OR Status Byte bit 5 AND SRE
69. ay from the time the relay closes till the trigger is felt The trigger is programmed in seconds with a resolution of 1 microsecond This is the resolution and not the accuracy That means that you will receive 0 00000 5 decimal places when you read it Any delay over 10 milliseconds rounds the delay to the nearest 10 milliseconds T Oo H EE i 3 Q D d H amp i Trigger IN H d St ie Trigger OUT o T G CHL ji Figure 7 2 Using External Trigger In and External Trigger Out A scan list allows you to specify a list of switching commands to be Using Scan Lists performed Once you have defined this list the 1257 will and External automatically sequence through the scan list executing one command each time it detects a trigger pulse at the external trigger Trigger Input input of the SYNC TRIG connector Three types of commands may be entered into a scan list e Close a specific relay e Recall a state stored in a non volatile memory location e Break stop scan list processing The 1257 may be programmed to sequence through a list of
70. ays replies with a 1 if the state is on or O if the state is off The keywords ON and OFF are NOT returned in the reply to ROUTE MONITOR STATE or any other query The 1257 uses a command buffer to store commands sent either through the RS 232 or GPIB interfaces The input buffer is 1024 characters in length If the input buffer fills to capacity and the GPIB interface is the active interface the NRFD signal is asserted on the GPIB bus This indicates to the system controller that the 1257 is not able to accept more data until it parses existing commands and clears space in the input buffer EADS North America Defense Test and Services Inc 2001 1257 User Manual If the input buffer fills to capacity and RS 232 is the active interface several possibilities exist depending on flow control arrangements The 1257 instrument supports either no flow control software flow control XON XOFF or hardware flow control CTS RTS Each scenario is described in more detail below If no flow control is selected the input buffer is full and additional commands are sent the buffer will accept characters as it makes space It is entirely possible therefore to have only parts of a message queuing to the input buffer This leaves unknown commands on the buffer that when parsed will generate errors For this reason if RS 232 communications are used without any flow control the user has the responsibility to insure that buffer over
71. below RST STB IDN The IEEE 488 2 common commands implemented by the 1257 are described later in this chapter The 1257 complies with this standard for both GPIB and RS 232 operational modes The 1257 supports all required IEEE 488 2 commands In addition the optional OPT SAV and RCL commands are supported The following paragraphs describe the IEEE 488 2 commands supported by the 1257 In addition the status reporting model implemented by the 1257 is described The 1257 complies with this standard for both GPIB and RS 232 operational modes The following commands are implemented DN Identification query RST Instrument reset TST Commanded self test CLS Clear status ESE Set the Standard Event Status Enable register ESE Read the Standard Event Status Enable register ESR Read the Standard Event Status register SRE Set the Service Request Enable register SRE Read the Service Request Enable register STB Read the status byte OPC Set the OPC bit of the Standard Event Status register OPC Reply with 1 when executed used for synchronizing EADS North America Defense Test and Services Inc 2001 1257 User Manual TRG Send a trigger to the instrument over the bus SAV Store relay states in non volatile memory RCL Recall relay states from non volatile memory OPT Read if any options are installed These commands are described in greater detail in this section of
72. by the ESR query represents a sum of the bit weight values for all conditions that are true For example if the PON bit is set and the QYE bit is set and the rest of the bits are cleared then the value returned for the ESR query is PON QYE 128 4 132 The Standard Event Status Enable Register provides a mask register The value of this register is logically ANDed with the Standard Event Status Registe If the value of this ANDing is nonzero then bit 5 of the Status Byte Hegister is set This bit is known as the Event Summary Bit or ESB EADS North America Defense Test and Services Inc 2001 1257 User Manual STATUS BYTE Register For example if the PON and QYE bits of the Standard Event Status Register are set but the Standard Event Status Enable Register value is 0 then the ESB of the Status Byte Register will not be set If either or both bits 7 and bit 2 of the Standard Event Status Enable Register are set then the ESB bit of the Status Byte Register will be set Another way of viewing the Standard Event Status Enable Register is that it selects which conditions reflected in the Standard Event Status Register are enabled to set the ESB bit of the status byte The Status Byte Register is similar to the Standard Event Status Register Each bit of this register reflects the true or false condition of the corresponding bit These bits reflect the PRESENT value of the condition whereas the Standard Event St
73. c 2001 1257 User Manual 3 and 4 may differ pee SETTINGS Remote TCP IP Option IP Oct 1 Status 0 Press the third key selecting line 3 Rotate the knob until line 3 reads as follows line 4 may differ GE SETTINGS Remote TCP IP gt Option Addr_Mode lt Status Auto_DHCP If line 4 already indicates the Manual Set mode no further action is necessary Otherwise select line 4 Rotate the knob until the display reads SETTINGS Type TCP IP Option Addr Mode Update Man Set Then press key 4 again to select the Manual Set mode This temporarily disables the TCP IP interface allowing you to change the TCP IP settings Setting the TCP IP Address 1 EADS North America Defense Test and Services Inc 2001 Once you have selected the Manual Set Mode you may set the TCP IP address Press key 3 to select line 3 Rotate the knob until line 3 appears as follows line 4 may differ TEE SETTINGS Type TCP IP Option IP Oct 1 Status 0 This prepares the 1257 to set the first octet eight bits of the IP address Select line 4 Rotate the knob until line 4 the Status line displays the first octet of your desired IP address For example if you wish to set the IP address to 197 23 0 123 rotate the knob until line 4 shows the first octet i e 197 if line 4 already shows the desired octet
74. ce Request Enable register SRE Read the Service Request Enable register STB Read the status byte SPE Serial Poll Enable These common commands are described below CLS Command The CLS command clears the SCPI and IEEE 488 2 defined status event registers These include EADS North America Defense Test and Services Inc 2001 The Standard Event Status Register is cleared to 0 This register is read using the ESR query The Standard Event Status Enable Register is cleared to 0 This register is set using the ESE command and read using the ESE query The Service Request Enable Register is cleared to 0 This register is set using the SRE command and read using the SRE query The Operation Status Enable Register is cleared to 0 This register is set using the STATUS OPERATION ENABLE command This register can also be read using the STATUS OPERATION ENABLE query SCPI Command Basics 5 13 1257 User Manual e The Operation Status Event Register is cleared to 0 This register is read using the STATUS OPERATION EVENT query e The Questionable Status Enable Register is cleared to 0 To set this register the STATUS QUESTIONABLE ENABLE command is issued To read this register the query STATUS QUESTIONABLE ENABLE indicates whether this feature is enabled e The Questionable Status Event Register is cleared to 0 It is read using the STATUS QUESTIONABLE EVENT Query ESE Command The ESE command sets th
75. command The reply to this command is a numeric value in the range 0 to 255 This query reads the value of the Status Byte Register Each bit of this register indicates a true false status condition When the bit is set the corresponding condition is TRUE when the bit is cleared the condition is FALSE The bit assignments are defined by the IEEE 488 2 specification The bit assignments are described in the Status Byte Register section of this chapter The value returned by the STB Query may also be read using the GPIB serial poll command Note that bit 6 MSS of the Status Byte Register remains set until all enabled conditions are cleared This is in contrast to the GPIB serial poll operation where the SRQ bit is set until it is read once and cleared after The OPC command will cause the Operation Complete bit of the Standard Event Status Register to be set when the command is executed This is bit O of the register This command could be used to cause an interrupt if bit O of the Standard Event Status Enable Hegister is set and bit 5 of the Service Request Enable Register is set This provides a means of synchronizing the application program with the 1257 and ensuring that all commands have been parsed and executed before continuing execution of the application program The OPC command has no parameters The only valid syntax for this command is OPC The OPC query causes the 1257 to reply with the value of 1 when t
76. command via a remote interface When lockout is disabled the front panel controls remain active even after the 1257 receives a command other than SYST KLOCK ON via the remote interface However the secure lockout mode becomes active if the 1257 receives a SYST KLOCK ON command regardless of whether the automatic lockout is enabled or disabled EADS North America Defense Test and Services Inc 2001 To enable or disable the automatic local lockout proceed as follows 1 Press the top key next to the display Rotate the knob until the top line reads SETTINGS Select line 2 next to the top line by pressing the second key Rotate the knob until the display reads SETTINGS Type Remote Option Source Using the Front Panel Controls 3 15 1257 User Manual Status GPIB 3 Select line 3 by pressing the third key Rotate the knob until line 3 reads as shown below E SETTINGS Type Remote gt Option Lockout lt Status Disabled 4 If line 4 already shows the desired status then no further action is necessary Otherwise select line 4 Then rotate the knob until the desired state Enabled or Disabled shows on line 4 This example uses Enabled Ze RT SETTINGS Type Remote Option Lockout lt Update Enabled Then press the fourth key bottom to update the status Pressing any other key cancels the change
77. ct the flow control option or to disable flow control proceed as follows 1 Press the top key Rotate the knob until the top line reads SETTINGS x 2 Select line 2 next to top line by pressing the second key This selects line 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual pee SETTINGS gt Type Display lt Option Format Status Decimal 3 Rotate the knob until line 2 reads as shown below lines 3 and 4 may differ See SETTINGS gt Type RS 232 lt Option Baud Rate Status 9600 4 Press the third key to select line 3 of the display Rotate the knob until line 3 indicates the Flow Control option as shown below ped SETTINGS Type Remote Option FlowCtrl Status Disabled 5 The three available flow control options on line 4 are e Disabled e XON XOFF e RTS CTS If line 4 of the display already indicates the desired choice then no action is necessary Otherwise press the fourth key Rotate the knob until the desired selection shows on line 4 In this example XON XOFF is desired zm SETTINGS Type RS 232 Option FlowCtrl Update XON XOFF Then press the fourth key to confirm the update Pressing any other button cancels the change NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s
78. d Services Inc 2001 1257 User Manual Waiting for Trigger Bit 5 Bit weight 32 decimal 20 hexadecimal This bit is set when a Scan List has been defined and the 1257 has been armed but is waiting for a trigger The TRIGGER SOURCE command may be used to select a trigger source If the trigger source is BUS then the TRG command will satisfy a trigger Settling Bit 1 Bit weight 2 decimal 2 hexadecimal This bit is set when the relays are settling due to a CLOSE OPEN or SCAN operation This bit is cleared after the settling time has elapsed All of the other bits of this register are not used by the 1257 These bits will return a value of 0 when read The Operation Status Enable Register enables individual bits to pass through to the Operation Status Event Register The bits of the Operation Status Enable Register are ANDed with the bits of the Operation Status Condition Register If both bits are set then the corresponding bit in the Operation Status Event Register is set For example if bits 1 5 and 6 of the Operation Status Condition Register are set and bits 5 and 6 of the Operation Status Enable Register are set then bits 5 and 6 of the Operation Status Event Register will be set The Operation Status Event Register latches the status information Once a bit is set in the Operation Status Event Register it remains set until the bit is cleared by reading the register with the STATUS OPERATION EVENT qu
79. de and add linefeeds automatically to incoming carriage returns In this configuration the 1257 should be configured to expect a carriage return only Using this method the terminal display will not have any overwritten lines and be much easier to read and use Another option for terminals terminal emulators that support character translation is to have carriage returns translated into linefeeds In this scenario the terminal terminal emulator still needs to operate in half duplex mode If however the 1257 is configured to accept linefeeds only it will now send a linefeed with replies This eliminates the need to add linefeeds to carriage returns since no carriage returns come into play on either side The two methods mentioned here are only suggestions and do not cover all possibilities The 1257 is a flexible instrument and will work in many different configurations EADS North America Defense SCPI Command Basics 5 5 Test and Services Inc 2001 IEEE STD 488 2 Common Commands IEEE 488 2 Common Commands SCPI Command Basics 5 6 1257 User Manual The IEEE STD 488 2 standard defines a set of common commands that perform functions like reset trigger and status operations Common commands begin with an asterisk are four to five characters in length and may include parameters The command keyword is separated from the first parameter by a blank space A semicolon may be used to separate multiple commands as shown
80. ds SETTI 2 Select line 2 next to top line by pressing the second key This selects line 2 so that you may choose the type of setting to work with EE SETTINGS gt Type Display lt Option Format Status Decimal 3 Rotate the knob until line 2 reads as shown below lines 3 and 4 may differ Soe SETTINGS gt Type RS 232 lt Option Data Bits Status 8 4 Press the third key to select line 3 of the display Rotate the knob until line 3 appears as shown below ELLE SETTINGS Type RS 232 Option EOL Mode Status CR Only 5 If line 4 of the display already indicates the desired EOL EADS North America Defense Test and Services Inc 2001 Computer Interfaces 4 21 Setting the Data Bits Stop Bits and Parity Computer Interfaces 4 22 1257 User Manual terminator then no action is necessary Otherwise press the fourth key Rotate the knob until the desired EOL terminator shows on line 4 In this example CR LF is desired See SETTINGS Type RS 232 Option Baud Rate lt Update CR LF Then press the fourth key to confirm the update Pressing any other button cancels the change When using a data terminal or a computer with terminal emulation software it is recommended that you set the 1257 to use the CR only terminator In this case also set the data terminal or computer to half duplex operation
81. e IEEE 488 GPIB Interface ree ennt ret tt eden t ere tien d nee 4 10 Basio GPIB Intormiatlor EE 4 10 1257 User Manual GPIB Cabling REENEN 4 10 Connecting the E el E 4 11 selecting the GPIB ane EEN 4 11 Setting the GPIB Address EE 4 12 Service Request SRO EE 4 13 Using the RS 232 Interface aciem acepten tears gie shane tack amb eerte in md aute E Tam east aes 4 14 Basic RS 232 neu E EE 4 14 Equipment Reguired EE 4 14 EE eege dee 4 14 Connecting to a Computer or Data Terminal sss 4 14 Gonnecting to EBEN Tene nds 4 15 Selecting the RS 232 Interface eere NEEN NEES EENS rx rd cR RR RR ERE eke 4 17 Setting the Flow Control Option EE 4 18 setting the Baud RE 4 20 Setting the Message Termination Characters sse 4 21 Setting the Data Bits Stop Bits and Panty iussi Lee do Ro rapa s oe uie ee 4 22 Using Microsoft Fy per ne TEE 4 24 SCPI COMMAND BASICS iecit teep t Respect heo iens ees ptt nd death m pan ep bed x qus tui gege 5 1 SCPI Gommard Ov6rviBW EE 5 1 Input Format iore nth tele elita opti endete epi da una ibi i dem exse o ono t ert pide 5 1 Command Keyword Long Form and Short Fom sss 5 3 Case Zenit aa 5 3 Optional KeyWord S EE 5 4 Querying Parameter Gettng ENNEN 5 4 SCOPI Gomrmnd Tl epminator Ee e EE 5 4 1257 User Manual IEEE STD 488 2 Common Commande ek 5 6 IEEE 488 2 Common Commands wi 2 c dcarsiesseteanelenk shots ahetavsndahanned dea ndenas
82. e is to maximize display life The time interval is adjustable from one minute to one hour To set the time interval proceed as follows Press the top key next to the display Rotate the knob until the top line reads SETTINGS lt Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads Type Display Using the Front Panel Controls 3 19 1257 User Manual SS SETTINGS gt Type Display lt Option Format Status Hex 3 Press the third key to select line 3 of the display option Rotate the knob until line 3 of the display reads E SETTINGS Type Display gt Option 7 Timeout lt Status 1 min 4 If line 4 already shows the desired timeout value then no further action is necessary Otherwise select line 4 Then rotate the knob until line 4 shows the desired value This example uses 15 min xe SETTINGS Type Display Option Timeout lt Update 15 Min Press the fourth key bottom to update the timeout value Pressing any other key cancels the change NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non
83. e open channel list are ignored when using this command EADS North America Defense Test and Services Inc 2001 1257 User Manual Removing Path Names Reading the Presently Defined Path Names Path names may also be used in defining an Include List an Exclude List or a Scan List The following sections describe each of these concepts When using path names with the Include List Exclude List and Scan List the presently defined path is used That is if the following sequence of commands is received PATH DEF PATH1 1 3 7 INCLUDE PATH1 1 0 PATH DEF PATHI 81 17 23 CLOSE 1 0 then the path definition in effect when the INCLUDE command was defined is used For the example shown then channel O on module 5 and channel 0 on module 7 are affected channel 17 on module 6 and channel 23 on module 8 are NOT affected The PATH DELETE command may be used to delete a single path name from the list of known path names The PATH DELETE ALL command may be used to remove all presently defined path names The syntax for these commands is ROUTe PATH Jg DELete path name gt ALL The following examples illustrate the use of this command Removes the name path1 ROUTE PATH pathl Removes the name testit PATH DEL testit Removes all path names PATH DEL ALL The PATH CATALOG command may be used to read back all
84. e value of the Standard Event Status Enable Register The value of this register is logically ANDed with the contents of the Standard Event Status Register see the ESR query description If any bits of this AND operation are set then bit 5 of the Status Byte is set Bit 5 is known as the Event Summary Bit or ESB and is shown in Figure 2 3 ESB of Status Byte bit O of ESE AND bit 0 of ESR OR bit 1 of ESE AND bit 1 of ESR OR bit 2 of ESE AND bit 2 of ESR OR bit 3 of ESE AND bit 3 of ESR OR bit 4 of ESE AND bit 4 of ESR OR bit 5 of ESE AND bit 5 of ESR OR bit 7 of ESE AND bit 7 of ESR where ESE is the value as set by the ESE command ESR is the value which may be read with ESR query The ESE command has the format SCPI Command Basics 5 14 EADS North America Defense Test and Services Inc 2001 1257 User Manual ESE ESE value where the lt ESE value gt is an integer numeric value in the range from 0 through 255 ESE Query This query reads the value presently programmed for the Standard Event Status Enable Register This reads the value as programmed by the ESE command ESR Query This query reads the value of the Standard Event Status Register Each bit of this register indicates a true false status condition When the bit is set the condition is TRUE when the bit is cleared the condition is FALSE The bit assignments are defined by the IEEE 488 2 sp
85. ecification The bit assignments are described in the text following Figure 5 1 The bits of the Standard Event Status Hegister are cleared at power on except for bit 7 which is set As conditions become true the corresponding bit in the register are set These bits remain set until e The ESR query is executed e The CLS command is executed The reply to the ESR query is a numeric integer value in the range 0 to 255 SRE Command The SRE command sets the value of Service Request Enable Hegister The value of this register is logically ANDed with the contents of the Status Byte If any bits of this AND operation are set bit 6 of the Status Byte is set Bit 6 is also known as the Master Status Summary bit Consult the text immediately following Figure 5 1 for a description of the MSS bit and the Service Request Enable register The command has the format SRE SRE value where the lt SRE value gt is an integer numeric value in the range 0 to 255 The value of bit 6 of this register is ignored since it does not make sense to enable an interrupt when an interrupt is generated EADS North America Defense SCPI Command Basics 5 15 Test and Services Inc 2001 SRE Query STB Query OPC Command OPC Query SCPI Command Basics 5 16 1257 User Manual This query reads the value presently programmed for the Service Request Enable Register This reads the value as programmed by the SRE
86. ecked using the INCLUDE query For the remainder of this discussion of the INCL query assume the following commands have been executed INCL 1 3 5 INCL 81 7 10 INCL 1 16 19 INCL 81 14 23 These commands define four distinct include groups The reply to the query be one of the following A If no include groups are defined for any of the channels passed as a parameter the reply will be a single ASCII linefeed character For example if the query INCL 1 15 is specified the reply will be a single linefeed character since channel 15 has not been placed on an include list B If all channels specified in the query reside on a single include group the reply will be a single channel list and terminated with an ASCII linefeed character For example the command EADS North America Defense Advanced SCPI Operations 7 3 Test and Services Inc 2001 1257 User Manual INCL 1 8 returns the reply 1 7 10 Note that the reply maintains the order in which the include group was defined That is the reply begins with channel 7 even though the query was sent for channel 8 C If multiple channels are specified in the query and the channels reside on different include lists then multiple lists will be returned in the reply The lists will be separated from each other by a comma For example the command INCL 1 3 1 19 1 23 returns the reply 1 3 5
87. ed current at one time In a high density switching system it is not reasonable to have all relays simultaneously closed all carrying full rated current operating at the maximum rated ambient temperature Some form of de rating is necessary Whether or not a drawer requires de rating and to what degree depends on the type of drawer its switching density and the ambient temperature The following guidelines provide practical de rating for drawers used in the 1257 chassis Predominantly Optical Drawers Drawers containing mostly optical content generally have limited actuation mechanisms and have no resistive signal path heating because of the optical nature of the product Under most circumstances unless otherwise described by the specifications of the optical switching drawer no additional de rating is necessary Refer to the drawer manual for additional restrictions or specifications Predominantly Microwave Drawers Microwave products like the 1260 CDS switch drawers that typically utilize solenoid actuated switches that draw significant amounts of power typically 350 mA per pole In the case of the 1260 CDS 10x10 matrix a total of 20 relays with 10 poles each exist in a drawer If it was possible to actuate all poles simultaneously the drawer would be dissipating 840 W Not only does this clearly exceed the power supply capabilities of the 1257 but this would result in a large amount of heat dissipation inside the 1257 enclos
88. er command parameters are described in Chapter 5 SCP COMMAND BASICS Since the ROUTE keyword is optional and the CLOSE keyword is shown indented from the ROUTE keyword valid commands consist of ROUTE CLOSE CLOSE The command ROUTE OPEN ALL is a command only Therefore the command ROUTE OPEN ALL is not allowed Since they are NOT shown as command only the commands ROUTE CLOSE and ROUTE OPEN are valid commands Table 6 1 contains a synopsis of the commands implemented by the 1257 The maximum and minimum values and resolution are shown for numeric parameters The commands marked with an asterisk are NOT defined in the SCPI language These commands follow the SCPI syntax rules for implementing the operation of the command SCPI Command Reference 6 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual Table 6 1 Commands Implemented by the 1257 Command Max Min Default See page Notes ROUTE Subsystem ROUTe 5 2 5 24 5 29 5 37 6 1 7 2 7 5 7 14 7 14 7 16 7 17 CLOSe lt channel list gt 5 2 5 35 6 1 CLOSe OPEN channel list 5 2 5 36 6 1 OPEN ALL Command Only 5 2 SCAN scan list 7 14 PATH 5 32 5 33 5 34 CATalog Query Only 5 34 DEFine path name gt close channel list gt 5 32 open channel list gt DEFine path name gt 5 34 no chan list for query DELete 5 33 NAME path name gt Command Only ALL Command Only 5 33 S
89. error occurs while executing the SAV command When this error occurs an error message is added to the message queue and may be read using the SYST ERR query Device Dependent Error Bit 3 Bit weight 8 decimal 8 hexadecimal SCPI Command Basics 5 9 SCPI Command Basics 5 10 1257 User Manual This bit is set when a device dependent error is detected For example a channel in the 1257 drawer is read during power up but contains an unknown identification byte value When this error occurs an error is added to the error message queue QYE Query Error Bit 2 Bit weight 4 decimal 4 hexadecimal This bit is set when a query error is detected For example a query is sent but the reply is not read and a second query or command is sent When this error occurs an error is added to the error message queue DOC Request Control Bit 1 Bit weight 2 decimal 2 hexadecimal This bit is never set by the 1257 and will always read 0 OPC Operation Complete Bit 0 Bit weight 1 decimal 1 hexadecimal This bit is set when the OPC command is executed This may be used to synchronize the 1257 with the commands to ensure that the 1257 command buffer is empty A bit is set in this register when the corresponding condition becomes true It remains set until the ESR query is executed When the query is executed the reply contains the present value of the register and the register is then cleared to O The value returned
90. ery or by sending the CLS command When any of the bits of the Operation Status Event Register are set bit 7 of the Status Byte Register will be set The Questionable Status Register is not used by the 1257 When the Questionable Status Condition Register or Questionable Status Event Register are read they will return a value of O The Questionable Status Event Register may be programmed and queried but will have no effect on the operation of the 1257 The STATUS PRESET command is implemented for SCPI compliance only The following SCPI command tree shows the syntax of the SCPI STATUS commands EADS North America Defense SCPI Command Basics 5 21 Test and Services Inc 2001 SCPI Parameter Type Numeric Parameters SCPI Command Basics 5 22 1257 User Manual STATus OPERation EVENt CONDition ENABle PRESet Command Only QUEStionable EVENt CONDition ENABle Examples of the commands are shown below To enable the Wait for Trigger and Wait for Arm bits the following command achieves this STAT OPER ENABLE 96 To read the value of the enable register STAT OPER ENABLE To read the value of the event register and clear the event register STAT OPER To read the value of the condition register STAT OPER COND These commands augment the IEEE 488 2 Common Commands to pro
91. esiataelstacelaneviettenstare 5 6 IEEE 4893 2 Status Description rerne eea aeaa Ea aaea a e EEAO E Ea aE Sath 5 7 Standard EVENT STATUS Register ennemi 5 9 STATUS BYTE R giSter cn enan a r a A E 5 11 SERVICE Fiegister ENABLEE Redglster nonet pt ita ete ttl etn cd eti Sc 5 13 ue bres EE 5 13 ME SE GOMMAN KEE 5 14 EE EEN 5 15 ESR CSI c 5 15 TORE reliure 5 15 EE 5 16 PO WEP QUE EE 5 16 OPCG Command RR 5 16 TOPCO ZOUSO EE En 5 16 EHNEN EE 5 17 RSJ o ofhittidrid Soo mots tea M M MA d E 5 17 INA P 5 18 ROE een us ue EE 5 18 SAV Command EE 5 18 Kl le DEE 5 19 Hunn ME 5 20 WAIGommand EE 5 20 EE e EE 5 20 SCPI Parameter Type EE 5 22 Numeric EE 5 22 BEE EMT EE 5 23 1257 User Manual Geelen 5 24 Command Input Buffer o te eeu s Lie UH RA Rd e uie paco Resa debent 5 24 Repl OQ tp t Buffel atit o te eR eec tetra tt as ee Mets Pu e pep EPA EQ es 5 26 Specifying Channels in Commandes e 5 27 t haiciilg 28 em B 5 28 Defining Drawer NEIE cessum tei tace perito e pip p t Ades or du a utr dede cula uo de eda d ortus 5 28 Removing Drawer Namaste etes te e E en en Ea ER AREE Ee dees 5 29 Reading the Presently Defined Drawer Names seeeeeeeeesee 5 30 Reading the Module Address for a Drawer Name seeeeeeseeeererreeeerrrrrrrresssrrrinnnnsssssreens 5 30 Storing the Drawer Names in Non Volatile Memonm
92. est and Services Inc and shall not without express written permission of EADS North America Defense Test and Services Inc be used in whole or in part to solicit quotations from a competitive source or used for manufacture by anyone other than EADS North America Defense Test and Services Inc The information herein has been developed at private expense and may only be used for operation and maintenance reference purposes or for purposes of engineering evaluation and incorporation into technical specifications and other documents which specify procurement of products from EADS North America Defense Test and Services Inc DISCLAIMER Buyer acknowledges and agrees that it is responsible for the operation of the goods purchased and should ensure that they are used properly and in accordance with this handbook and any other instructions provided by Seller EADS North America Defense Test and Services Inc products are not specifically designed manufactured or intended to be used as parts assemblies or components in planning construction maintenance or operation of a nuclear facility or in life support or safety critical applications in which the failure of the EADS North America Defense Test and Services Inc product could create a situation where personal injury or death could occur Should Buyer purchase EADS North America Defense Test and Services Inc product for such unintended application Buyer shall indemnify and hold EADS North America
93. f the gateway until all four are set Setting the Sub Net Mask The subnet mask in like manner as the IP address and gateway is comprised of four octets Set the gateway by entering the four octets one at a time 1 Press key 3 to select line 3 Rotate the knob until line 3 appears as follows line 4 may differ SETTINGS Type TCP IP EADS North America Defense Test and Services Inc 2001 1257 User Manual gt Option NM Oct 1 Status O0 This prepares the 1257 to set the first octet eight bits of the sub net mask 2 Select line 4 and rotate the knob until line 4 displays the first octet of your desired sub net mask Then press key 4 again to confirm 3 Proceed with the remaining octets of the sub net mask until all four are set Re enabling TCP IP Communications After setting the address gateway and net mask you must re enable TCP IP communications before the 1257 can use the Ethernet interface 1 Ensure that the display shows the SETTINGS WMRemote TCP IP menu below Serum SETTINGS Remote TCP IP gt Option Addr_Mode lt Status Man_Set 3 Select line 4 Rotate the knob until line 4 reads as shown below pps SETTINGS Remote TCP IP Option Addr Mode Update Man Use Then press key 4 again to confirm The 1257 is now ready for TCP IP communications NOTE Menu preferences are not normally retai
94. gure 4 11 ASCII Setup Dialog BOX 4 tet eer eniti et e Ex ER SR LEEREN ERE TR RR ERU dun 4 29 Figure 5 1 IEEE 488 2 Status Reporting MOdel i aes Ase er I RS eat 5 8 Figure 7 1 State Transition Diagram For Arming and Triggering the 1257 7 10 Figure 7 2 Using External Trigger In and External Trigger Out 7 12 Figure B 1 Installing the Slide ICIL E B 2 Figure B 2 Hack MOUNN O EE B 3 List of Tables Table 3 1 Accessibility of Features eeeeseeeieeeeeeeeeeeeeeeneenennn nennen nnne nnn 3 1 Table 5 1 Power On and Reset Giate 5 17 Table 6 1 Commands Implemented by the 12b 6 3 1257 User Manual Chapter 1 INTRODUCTION Overview The 1257 Switching System is a high performance switching and control system in a compact 4U 5U or 6U rack mountable package The 1257 is designed to accept removable microwave and optical switching drawers customized to particular applications The 1257 has the following capabilities e Sources 150W at 12V e 240 controllable channels e TTL CMOS or 2A open drain control signals Figure 1 1 1257 Switching System EADS North America Defense Introduction 1 1 Test and Services Inc 2001 Features Ease Of Use Introduction 1 2 1257 User Manual The 1257 Switching System has many design features to make it easy and convenient to use Fast Setup There are no configuration jumpers or switches to be set The 1
95. h America Defense Test and Services Inc 2001 1257 User Manual System Menu EADS North America Defense Test and Services Inc 2001 STORE RECALL Type NVRAM Option Image lt Do Update 4 Press the fourth key bottom to store the power up state Pressing any other key cancels the change Erasing Non Volatile RAM The entire non volatile RAM may be erased if desired This erases all presets including switching states the power up switching state and the menu preferences The menu preferences will be set to the factory defaults To erase the entire non volatile RAM proceed as follows 1 Press the top key next to the display Rotate the knob until the top line reads STORE RECALL 2 Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads as follows STORE RECALL gt Type NVRAM lt Config Image Action lt select gt 3 Press the fourth key to select line 4 of the display If line 4 does not read Erase A11 then rotate the knob until it does STORE RECALL Type NVRAM Config Image lt Do Erase All 4 Press the fourth key bottom to erase the non volatile RAM Pressing any other key cancels the operation and leaves the memory intact Description The SYSTEM menu allows viewing of system information This consists of the firmware
96. hannels 5 AND 15 in the drawer INCLUDE 1 12 1 0 OPEN 1 0 The first command places channels 0 and 12 in the drawer in an include list The second command opens both channel 12 and channel 0 The include list relationship for a particular channel or multiple channels may be removed by using the INCLUDE DELETE command The following examples illustrate the use of the INCLUDE DELETE command INCLUDE 1 0 4 INCLUDE DELETE G1 2 Advanced SCPI Operations 7 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual The first command defines an include list consisting of channels 0 through 4 The second command removes channel 2 from any include list definitions After the second command is executed the include list now consists of channels 0 1 3 and 4 These two commands are thus equivalent to a single command INCLUDE 1 0 1 3 4 INCLUDE 1 0 19 INCL DEL 1 5 8 1 11 15 17 The first command defines an include list of channels O through 19 The second command removes include list association for channels 5 through 8 and channels 11 15 and 17 These two commands are equivalent to the command INCLUDE 1 0 4 9 10 12 14 16 18 19 INCL DELETE ALL All include list definitions are deleted The include list association for a single channel for multiple channels or for all channels in the system may be ch
97. he query is executed This query may be used to ensure that all previous commands have been executed so the application program may be sure that relays have been programmed to their desired states before continuing execution of the application program EADS North America Defense Test and Services Inc 2001 1257 User Manual IDN Query This query requests the instrument to identify itself The 1257 responds to this query with the following reply Racal Instruments 1257 Switch System lt revision gt This reply indicates the manufacturer of the instrument is EADS North America Defense Test and Services that it is a 1257 Switch System and the current firmware revision The firmware revision is a numeric floating point value An example firmware revision is 3 10 A sample is shown below Racal Instruments 1257 Switch System 3 10 RST Command The RST command resets the instrument to its power on default state These settings are shown in Table 5 1 of this manual This command does NOT change the value of SCPI Operation or Questionable status registers or IEEE 488 2 status registers condition registers or enable registers This command does NOT clear the error message queue the input command buffer or the output reply buffer Table 5 1 Power On and Reset State Attribute Related Command s Reset State Relay States RCL 0 The states are recalled from non volatile OPEN memory location O power up state As s
98. hen closed After power up and after a RST command has been executed all EXCLUDE lists are deleted if they are not first saved into non volatile memory Advanced SCPI Operations 7 6 EADS North America Defense Test and Services Inc 2001 1257 User Manual Using External Triggering Selecting the Trigger Source You may provide an External Trigger In signal to control when the 1257 closes or opens relays Also the 1257 can provide an External Trigger Out signal to tell your equipment when the relays have settled after opening or closing These signals connect to the External Trigger In and External Trigger Out connectors on the 1257 rear panel Refer to Figure 7 1 Using External Trigger In and External Trigger Out for connector location and signal information The TRIGGER SOURCE command selects which source is used to trigger the scan list Each time a trigger is received from the selected trigger source the 1257 advances to the next element on the scan list The syntax for the TRIGGER SOURCE command is TRIGger SEQuence SOURce BUS HOLD IMMediate EXT The possible trigger sources are BUS The GPIB bus trigger or the TRG command advances to the next scan list element HOLD Triggers are ignored and the scan list will not advance IMMediate The scan list once initiated advances as fast as possible after considering the relay settling time trigger input delay
99. hipped from the factory these are all in the CLOSE OPEN position Trigger Input Source TRIGGER SOURCE IMMediate Trigger Input Delay 0 0 seconds Pathname List ROUTE PATH Pathnames stored in non volatile memory are automatically recalled at power up ROUTE SCAN Scan List No Scan List Defined Include List No Include Lists Defined Exclude List No Exclude Lists Defined EADS North America Defense SCPI Command Basics 5 17 Test and Services Inc 2001 TST Query RCL Command SAV Command SCPI Command Basics 5 18 1257 User Manual The TST query is supported only to be compliant with the IEEE 488 2 standard The 1257 performs an extensive self test at every power up If the system detects any failures the condition is indicated directly on the front panel display Normally self test errors are considered to be fatal conditions and result in a system halt In this condition communication activity ceases For this reason communications only function if self test passes and therefore a TST will always report a value of 0 indicating a successful self test The RCL command will recall the relay states from non volatile memory The RCL command may specify a non volatile memory location from which to recall the instrument state That is both of the following formats are accepted RCL RCL location If location is specified it must be in
100. ices Inc 2001 1257 User Manual 4 800 9 600 19 200 38 400 57 600 115 200 Data Bits 8 7 Parity None Even Odd Stop Bits 1 2 Flow Control Disabled XON XOFF RTS CTS EOL Mode LF Only CR LF CR Only GPIB Address 0 1 2 30 PwrOnSRQ Enabled Disabled TCP IP Addr_mode Auto _ DHCP Man_Use Man Set IP_Oct_1 0 255 IP_Oct_2 0 255 IP_Oct_3 0 255 IP_Oct_4 EADS North America Defense Using the Front Panel Controls 3 25 Test and Services Inc 2001 Display Using the Front Panel Controls 3 26 1257 User Manual 0 255 GW Oct 1 0 255 GW Oct 2 0 255 GW Oct 3 0 255 GW Oct 4 0 255 NM Oct 1 0 255 NM Oct 2 0 255 NM Oct 3 0 255 NM Oct 4 0 255 Format Hex Binary Decimal Intensity 2596 5096 75 100 Screen Saver Enabled Disabled Timeout 1 min 5 mins 10 mins EADS North America Defense Test and Services Inc 2001 1257 User Manual 15 mins 30 mins 45 mins 1 hr STORE RECALL SYSTEM Firmware Revisions Boot EADS North America Defense Test and Services Inc 2001 Defaults Recall Power Up Store Recall Preset 1 to 100 Store Recall Non Volatile RAM Image Erase All Update Defaults Recall Power Up Store Recall Flash Device ID Number Unique 8 digit 1257 ID number Using the Front Panel Controls 3 27 1257 User Manual This page was left intentionally blank Using the Front Panel Controls 3 28 EADS North America Defense Te
101. ices Inc 2001 1257 User Manual EADS North America Defense Test and Services Inc 2001 External Trigger Input Allows an external device to trigger switching operations The external device connects to the External Trigger In connector External Trigger Output Provides a pulse on the External Trigger Out connector to trigger an external device such as a DMM after the relay states have changed Scan Lists Allows you to specify a sequence of relay closures to step through in response to an external trigger source A scan list may include relays on one module or multiple modules Programmable Delay Allows you to specify the amount of time delay from a relay state change to an external trigger pulse Verification Allows you to verify the status of all switches Path Level Switching Allows complex paths to be defined with open and close elements stored in non volatile memory and be controlled remotely or through the front panel display Confidence Mode Automatically verifies correct application of voltage to relay coils Non Volatile Memory Stores and recalls switch configurations and 1257 user preferences such as GPIB address and RS 232 baud rate Power Up Recall Automatically recalls a complete switching system configuration from non volatile memory at power up Self Test Ensures that critical system components are functioning correctly This test executes automatically at power up Introductio
102. ifying that it has the required capacity as marked on the 1257 rear panel Make sure the fuse is properly installed see Chapter 2 Getting Started in Figure 2 1 Changing Fuse for Main AC Power Troubleshooting C 1 Front Panel Controls PROBLEM Display goes blank was working No response to front panel controls Troubleshooting C 2 POSSIBLE CAUSES e Power has been interrupted e 1257 screen saver has been activated e Key is not currently enabled Enabled keys have their LEDs illuminated 1257 is in remote mode local mode not locked out e 1257 is in remote mode local mode locked out 1257 User Manual WHAT TO DO Verify that the 1257 AC input is connected to a live mains outlet Verify that the 1257 power switch is still in the ON position Screen saver activation is normal after a period of no front panel control activity To restore the display press any key on the front panel To increase the delay time or disable the screen saver refer to Chapter 3 USING THE FRONT PANEL CONTROLS under the Settings heading Note that leaving the screen saver enabled maximizes the life of the fluorescent display Read display options carefully Not all keys are valid for all menus If display reads REMOTE OPERATI ON RS 232 is active Local Mode then press key 4 bottom to restore display and controls If display reads REMOTE OPERATION RS 23
103. igures Figure 1 1 1257 Switching Syst li s s eec lt i cay saath oes oxen ana ka ges Men cunneatacavtees siepe ema aashendeas 1 1 Figure 1 2 1257 Features Front Panel 1 3 Figure 1 3 1257 Features Rear Panel eem 1 3 Leite Si EM DIMENSIONS E 1 4 Figure 1 5 2U High Bemote Urll uu es baleen RD te irren ad eet tU a eR Dun d e ee 1 5 Figure 1 6 Reverse Rack Mounted DEE 1 5 Figure 1 7 5U Front Panel Displays E 1 6 Figure 1 8 6U Front Panel RE 1 6 Figure 2 1 Changing Fuse for Main AC Power cccculasncae i tase egal 2 1 Figure 2 2 Inserting E RR e EEN 2 3 Figure 2 3 Activating Main AC Power icit acces detent n ka Ebr Ride esae Fab Ern ud ERE Ege aT 2 4 Figure 3 1 Front Panel Controls ce oo HIP d re ER e ERE Xa HE pM e teeta 3 2 Figure 4 1 Connecting the Ethernet Interface 4 3 Figure 4 2 Using the GPIB Interfaces eite c pt ito Pee D eh e UU ee E REDDERE Ded 4 11 Figure 4 3 Using the RS 232 Interface AAA 4 15 Figure 4 4a Using the 1257 with a Computer ANNE 4 16 Figure 4 4b Using the 1257 with a Melen eee a ee kr deett bl tod tree oque geg 4 16 Figure 4 5 HyperTerminal Connection Dialog BOX ssseeeeme enn 4 25 Figure 4 6 Phone Number Dialog Box e d e Aide eegene 4 25 Figure 4 7 COM Properties Dialog BOX AEN 4 26 Figure 4 8 Main Communications Gcreen ENEE 4 27 Figure 4 9 Properties Dialog BOX roii t gd Ett oder gd deene dek ee eegec 4 28 1257 User Manual Figure 4 10 Settings Dialog EN 4 28 Fi
104. imum separation of 4m 13 2 feet between devices Average separation of no more than 2 meters 6 6 feet eMaximum of 15 devices including controller connected to the bus Longer cable length and more devices than 15 can be accommodated with bus extenders available from third party sources EADS North America Defense Test and Services Inc 2001 1257 User Manual Connecting the Use a GPIB cable to connect the rear panel GPIB connector on the 1257 to the GPIB port of the host computer Refer to Figure 4 GPIB Cables 2 Using the GPIB Interface CAUTION Avoid stacking more than three cables on any single connector If the stack is too large side forces may damage the connector mounting CAUTION Tighten the locking screws finger tight on each connector Do not over tighten To GPIB Ineterface Connector GPIB Cable GPIB Connector Figure 4 2 Using the GPIB Interface Selecting the GPIB Before using the GPIB interface with the 1257 you must select the GPIB interface via the front panel controls as follows Interface 1 Press the top key Rotate the knob until the top line reads SEITINGS lt 2 Select line 2 next to top line by pressing the second key This selects line 2 so that you may select the type of setting to work with Ecce SETTINGS gt Type Display lt Option Format Status Decimal 3 Select
105. in a manner not specified in this manual may impair the protection it normally provides Getting Started 2 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual Installing the Make sure the power is turned off before installing or removing a drawer Inserting or removing a drawer with power Drawer on may cause damage to the 1257 and the drawer Figure 2 2 Inserting a Drawer shows the proper way to install a drawer in the 1257 chassis When inserting the drawer engage the edges with the card guides of the 1257 Carefully slide the drawer into the chassis until it stops then push it firmly to engage its rear connectors with the 1257 backplane When the drawer is fully seated it is flush with the rear panel of the 1257 chassis Figure 2 2 Inserting a Drawer For information about connecting the switch drawer to your Connecting to the external hardware refer to the drawer user manual Drawer EADS North America Defense Getting Started 2 3 Test and Services Inc 2001 1257 User Manual Activating Main You are now ready to apply power to the 1257 Switching System ctivat gma See Figure 2 3 Activating Main AC Power for instructions on AC Power activating main power To apply power simply press the ON OFF button to 1 m D qp 9 e e o 9 d de F Si D qKD p Figure 2 3 Activating Main AC Power Self Test The 1
106. ination characters of 1257 not compatible with terminal setup Echo mode of remote terminal is not set to half duplex local echo HyperTerminal included with Microsoft Windows fails to echo characters properly Certain versions of HyperTerminal do not operate correctly in all cases e Use a high quality shielded cable Set 1257 to use carriage return and line feed CR LF as termination characters see Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the Message Termination Characters Set 1257 to use only carriage return CR as termination character see Chapter 4 GPIB and RS 232 Interfaces under the heading Setting the Message Termination Characters Set terminal for half duplex local echo mode Consult the terminal user s manual for instructions Download newer version known as HyperTerminal Private Edition from http www hilgraeve com or use other terminal communication software EADS North America Defense Test and Services Inc 2001 1257 User Manual IEEE 488 GPIB Remote Interface PROBLEM POSSIBLE CAUSES WHAT TO DO 1257 does not respond to e 1257 is not set for remote e Use front panel controls to set GPIB commands GPIB operation the 1257 for GPIB operation See Chapter 4 GPIB AND RS 232 INTERFACES under the heading Selecting the GPIB Interface Commands sent to wrong Make sure that the commands GPIB address are
107. ing Exclude mutually exclusive This feature is called an exclude list When Lists one relay on an exclude list is closed all others in the exclude list are opened This prevents two relays in an exclude list from being closed simultaneously This feature can be used to ensure two or more relays are not shorting system resources such as power supplies together A channel may reside on at most one exclude list An attempt to place a channel on a second exclude list results in an error The error is placed on the error queue and may be read using the SYSTEM ERROR query A channel cannot be on an include list with another channel if it is also on an exclude list with that second channel That is the following definitions result in an error INCLUDE DEF 1 0 10 EXCLUDE DEF 1 0 11 15 6 The error occurs because channels 0 and 6 are on an include list together and they are on an exclude list together This creates a conflict since an attempt to close channel 0 would attempt to close channel 6 due to the include list association but would be prevented from doing so by the exclude list The syntax for defining an exclude list is shown below ROUTe EXCLude channel list EXCLude channel list DELete channel list ALL The following examples illustrate the use of this command to define exclude lists EXCLUDE 81 0 7 1 8 17 CLOSE 81 0 CLOSE
108. iscrete parameter the TRIGGER SOURCE command is specified as TRIGger SOURce BUS HOLD IMMediate EXT Meaning the parameter must be one of the following BUS HOLD IMM IMMEDIATE EXT Note that just like command keywords discrete parameters may be specified using either the long form or the short form Whenever a discrete parameter is used the query form of the command returns the SHORT form of the parameter value in upper case characters That is the command may be specified using either IMMEDIATE or IMM but the query EADS North America Defense SCPI Command Basics 5 23 Test and Services Inc 2001 Boolean Parameters Command Input Buffer SCPI Command Basics 5 24 1257 User Manual TRIGGER SOURCE will return the reply IMM NOT IMMEDIATE Boolean parameters represent a single binary condition that is either true or false The 1257 accepts OFF or 0 for a false condition The 1257 accepts ON or 1 for a true condition The following command uses a boolean parameter ROUTe MONitor STATe OFF ON O 1 The following commands turn the monitor OFF ROUTE MONITOR STATE OFF ROUTE MONITOR STATE 0 MON OFF MON 0 The following commands turn the monitor ON ROUTE MONITOR STATE ON ROUT MON STAT ON MON 1 When Boolean parameters are queried the 1257 alw
109. list is deleted The present scan list may be deleted using the command SCAN DELETE command The presently defined scan list may be read using the SCAN command For example if the scan list shown for the example above is presently defined the query SCAN will generate the reply 1 323 1 0 2 1 8 5 example 1 0 statel4 1 224 The reply will NOT include module names even if the SCAN command used to define the list included module names Module numbers are always used when replying to the SCAN query In some applications it may be desirable for the reason of Advance reliability to confirm that switches are actually closed or open Verification based on the commanded state of the system The 1257 provide TUN f swifchi Features m with capabilities to detect certain types of switching From the standpoint of the 1257 switching failures fall into one of two classes detectable and undetectable An example of an undetectable failure is where a relay contact has welded closed through misuse In this example the relay coil voltages will verify properly even though the contact has suffered permanent damage There is no easy way to detect this condition without invasively monitoring the switched side of the relay This obviously would defeat the isolation characteristics of a relay The other class of failures those that are detectable include coil and driver failures The 1257 switching system offers two method
110. lity Saving Recalling the All verification masks presently defined may be prepared for T A storage in non volatile memory using the VERIFY SAVE Verification Masks ou All module names stored in non volatile memory may be recalled Advanced SCPI Operations 7 18 EADS North America Defense Test and Services Inc 2001 1257 User Manual from non volatile memory using the VERIFY RECALL command The syntax for these commands is shown below ROUTe SVERify SAVe RECall These commands are NOT defined in the SCPI standard These commands follow the syntax rules of SCPI to implement this functionality NOTE The actual process of updating non volatile memory requires a separate SYSTEM NVUPD command This allows multiple relay states exclude lists include lists and module names to be updated in rapid succession followed by a single slower update of the actual non volatile memory Automatically In addition to defining verification masks the user has the ability to Recallin determine whether the masks stored in non volatile memory are Apr g recalled on application of power to the system The command Verification Masks syntax is as follows at Startup SE SVERify RECall STATE OFF ON 0 1 STATE When a state of ON or 1 is specified a special flag is stored inside the 1257 non volatile memory structure that instructs it to automatically load any stored verification masks each time p
111. lly after applying power to a 1257 the octet fields for the IP address gateway address and netmask have values of zero After a DCHP server assigns and address to the 1257 these fields will be non zero To view the first octet of the IP address press the third key selecting line 3 Rotate the knob until the display reads In the example above the first octet would be 172 Continuing to scroll through the various octets under the Option Computer Interfaces 4 5 Computer Interfaces 4 6 1257 User Manual category on the third line would give the complete IP address gateway address and the subnet mask For example if the remaining IP_Oct_2 IP_Oct_3 and IP_Oct_4 fields displayed values of 16 30 35 respectively the DHCP assigned IP address would be 172 16 30 35 It is important to note that while in DHCP mode the values for the various octets can be viewed but not changed Using Static Addressing In Manual Mode the user decides what static IP address gateway and sub net mask to use and enters them manually The first step is to put the 1257 into Manual Set mode to allow setting of the TCP IP parameters Before attempting to use static or manual addressing on a 1257 several important things must be kept in mind Do not randomly assign an address to the 1257 Duplicate or incorrect addresses on a central network can cause unpredictable problems and failures that are difficul
112. m Show firmware revisions for boot memory and flash memory This facilitates efficient response when contacting Customer Service To work with one of these menus first push the top key corresponding to line 1 top line of the display This selects the top line gt OPERATIONS lt Drawer 1260 CDS Channel 100 Status Open Next rotate the knob until the desired menu title is displayed on line 1 The following sections discuss in detail how to use these menus Operations Menu Description The Operations Menu provides direct control of switching operations in the drawer It allows the following operations e View the states of the channels closed or open on a drawer e Close or open a channel path on a drawer Closing a Channel The 1257 front panel enables the user to manually close and open channels on the drawer For connector pin assignments of a drawer refer to the drawer user manual For example suppose a 1260 CDS drawer is installed To close relay channel 104 in this drawer proceed as follows 1 Press the top key next to the display This selects the top display line so that you can change it The selection markers gt and lt appear on the line to indicate that it is selected Rotate the knob until the top line reads OPERATIONS 2 Press the third key to select line 3 of the display channel number EADS North America Defense Using the Front Panel C
113. made BBM is the default mode on power up or after the 1255A has been reset e MBB Make Before Break Causes new channel closures to be made before existing channel closures are opened For example the following command ROUTE CONFIGURE 1 MBB causes the drawer installed in the 1257 to operate in Make Before Break mode EADS North America Defense Advanced SCPI Operations 7 1 Test and Services Inc 2001 1257 User Manual The 1257 provides the capability to define sets of relays which operate together This feature is called an include list When a relay on an include list is closed all relays on that include list are closed Likewise when a relay on an include list is opened all relays on that include list are opened Include Lists A channel may reside on at most one include list An attempt to place a relay on a second include list results in an error The error is placed on the error queue and may be read using the SYSTEM ERROR query The syntax for defining an include list is shown below ROUTe INCLude channel list INCLude channel list DELete channel list ALL The following examples illustrate the use of this command to define include lists INCLUDE 1 5 15 CLOSE 81 5 This first command places two relays on the include list Channels 5 and 15 of the 1257 drawer are placed in an include list The second command closes c
114. mbered as follows Oe We Soe d a0 Tt aoe e A e Sp 8o Qu DI GU S1 32 33 34 This example module consists of 20 channels Suppose that only the following channels are closed while the remainder are open 3y 205 3 EADS North America Defense SCPI Command Basics 5 35 Test and Services Inc 2001 Opening Channels SCPI Command Basics 5 36 1257 User Manual The following examples show the replies to the CLOSE queries Command CLOSE 1 0 34 Reply 00010000001000001000 Command CLOSE 1 0 Reply 0 Command CLOSE 81 3 20 31 Reply The OPEN command may be used to open channels To say a channel is open means a The input of the channel is disconnected to the output Single Pole Single Throw b The input of the channel is disconnected from the normally open output and connected to the normally closed output Single Pole Double Throw The syntax for the OPEN command is ROUTe OPEN channel list The format for a lt channel list gt is described in the previous paragraphs of this section of the manual The OPEN command may be used to query the present state of the channels in the system This command returns a reply of a sequence of 0 and 1 each of which are separated by a single ASCII space character The value of the reply is 1 if the corresponding relay is opened or O if the corresponding relay is closed
115. moved from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up The 1257 may generate a service request SRQ in response to a variety of events These events include detecting a programming error or confidence mode failure generating a response to a query and many others Consult the IEEE 488 2 Status Description section in Chapter 5 SCPI Command BASICS for a description of how to program the 1257 to generate a service request EADS North America Defense Computer Interfaces 4 13 Test and Services Inc 2001 Using the RS 232 Interface Basic RS 232 Information Equipment Required Connecting to a Computer or Data Terminal Computer Interfaces 4 14 1257 User Manual The RS 232 interface provides a simple way to control the 1257 from virtually any computer Nearly every computer has a serial COM port The only extra hardware required is a serial cable This section gives information about connecting the 1257 to the computer via serial cable setting up the 1257 for serial port operation and communicating with the 1257 by using a terminal emulation program To use the RS 232 interface you need an RS 232 data terminal or a computer equipped with an
116. must follow to actually update the non volatile memory If new relay modules are added to the system after the SAV 0 command has been executed the new relay modules will not be programmed at power up Also if module addresses are changed after the execution of the SAV 0 command the modules whose addresses have changed will not be programmed In general whenever new modules are added or module addresses are changed then the SAV 0 command should be used to place the relays of the new modules into the desired power up state SPE Command The status byte is returned to the controller in response to a Serial Poll Enable SPE message The status byte carries the following information Bit Number Bit Value Description 1 LSB 1 Unused 2 2 Unused 3 4 Unused 4 8 Scan list at break point 5 16 Ready 6 32 Programming error 7 64 Service requested 8 MSB 128 Unused EADS North America Defense SCPI Command Basics 5 19 Test and Services Inc 2001 TRG Command WAI Command SCPI Status Registers SCPI Command Basics 5 20 1257 User Manual NOTE When bit 7 of the status byte Service Requested is set to show that SRQ is asserted the 1257 will not respond to any GPIB commands until the interrupt has been serviced Servicing may be done with a serial poll After the interrupt has been serviced the error code generated must be obtained via GPIB Bits 6 and 7 are cleared after each
117. n 1 7 Items Shipped with the 1257 Introduction 1 8 1257 User Manual The following items are shipped with each 1257 Switching System ITEM RACAL PART QUANTITY NUMBER 1257 4U Chassis Assembly 407796 001 1 Optional 1257 5U Chassis Assy 407796 002 1 Optional 1257 6U Chassis Assy 407796 003 1 Optional 1257 4U Reverse 407831 001 1 mount Chassis Assembly Optional 1257 5U Reverse 407831 002 1 mount Chassis Assembly Optional 1257 6U Reverse 407831 003 1 mount Chassis Assembly Instruction Manual 980862 1 AC Power Mains Cable 600620 1 Software Driver 921788 1 The following accessories may be ordered separately Option 04 European Power Cord unterminated GPIB Cable 1 meter GPIB Cable 2 meter RS 232 Cable 10 ft 9 pin female D Sub to 9 pin male D Sub Rack Slide Kit P N 407730 P N 500310 001 P N 500310 002 P N 602248 P N 407813 EADS North America Defense Test and Services Inc 2001 1257 User Manual Chapter 2 Getting Started M ntin ion You may use the 1257 Switching System on a table or mount it in ount g Opt ons a standard NEMA 19 rack See Appendix B RACK MOUNTING the 1257 for instructions on placing the 1257 in a rack 1 The 1257 Switching System requires a power input of 90VAC to Main AC Power 250VAC 43Hz to 63Hz The 1257 requires no adjustments settings or changes in fuse capacity to accommodate variations of voltage and fre
118. n Protocol In this mode a network server automatically provides an IP address gateway and EADS North America Defense Test and Services Inc 2001 1257 User Manual subnet mask for the 1257 Manual In Manual Mode the user assigns a static IP address gateway and subnet mask to the 1257 Using DHCP Addressing To select the DHCP mode proceed as follows 1 EADS North America Defense Test and Services Inc 2001 Press the top key which will select line 1 top line Rotate the knob until the top line reads SETTINGS lt Select line 2 next to top line by pressing the second key Rotate the knob until the display shows Remote TCP IP in line 2 lines 3 and 4 may differ SETTINGS Type TCP IP lt Option P cOGt 1 Status 0 Press the third key selecting line 3 Rotate the knob until line 3 reads as follows line 4 may differ EE SETTINGS Remote TCP IP gt Option Addr_Mode lt Status Auto_DHCP If line 4 already indicates Auto DHCP mode then no further action is required Otherwise select line 4 Rotate the knob until the display reads succ SETTINGS Type TCP IP Option Addr Mode Update Auto DHCP Then press key 4 again to select the DHCP mode The 1257 is now ready for TCP IP communications It is possible to see when the 1257 successfully negotiates an address with a DHCP server Norma
119. n line 2 the 1257 shows related parameters on line 3 Once the user chooses a parameter from line 3 the 1257 displays the current status or value of this parameter on line 4 On line 4 the user may choose from among different values for the parameter For example suppose the 1257 contains a 1260 CDS drawer To close relay channel 102 on this drawer the user proceeds as follows Using the Front Panel Controls 3 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual 1 Press the top keypad switch This selects line 1 top line of the display as follows e Option Source Status GPIB e dq ere Type Remote e qi NOTE The selection markers gt and lt identifies the display line that is currently selected 2 Rotate the knob to the right clockwise The front panel speaker makes a clicking noise as the knob rotates At each click the selected display line shows another choice After the first click the display shows the following choice on line 1 e STORE RECALL xc m Type State Option Defaults de qu Set Recall ed Note that the top line has changed along with the related information on lines 2 3 and 4 3 Rotate the knob another click to the right The display now shows e Cue Firmware Revisions Ga Boot 02 05 dp Flash 02 15 a ee EADS North America Defense Using the Front Panel Co
120. nd choose an icon for the connection Name Figure 4 5 HyperTerminal Connection Dialog Box Enter a name such as 1257 for the new connection Then click on OK HyperTerminal then displays the Phone Number dialog box as shown in Figure 4 6 your screen may differ slightly S 1257 Enter details for the phone number thet you wentto dial Coco Aren code a Phone number Comectusing EISE cen Figure 4 6 Phone Number Dialog Box EADS North America Defense Computer Interfaces 4 25 Test and Services Inc 2001 1257 User Manual On the Connect Using line select the serial port you wish to use This example uses Com 2 Click on OK HyperTerminal then displays the COM Properties dialog box shown in Figure 4 7 COM2 Properties HE Port Settings Bits per second 5 d Data bits e sl Parity None sl Stop bits fi Flow control None s Bestore Defaults Figure 4 7 COM Properties Dialog Box Set the baud rate to match the 1257 baud rate Set the port for 8 data bits no parity one stop bit and no flow control as shown in Figure 4 7 Click on OK HyperTerm then displays the main terminal screen as shown in Figure 4 8 Computer Interfaces 4 26 EADS North America Defense Test and Services Inc 2001 1257 User Manual 1256 HyperTerminal L Of x File Edit View Call Transfer Help Dis als sole el C
121. ned after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and EADS North America Defense Computer Interfaces 4 9 Test and Services Inc 2001 Using the IEEE 488 GPIB Interface Basic GPIB Information GPIB Cabling Guidelines Computer Interfaces 4 10 1257 User Manual then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up The GPIB standard permits up to 15 devices including the controller to interconnect and reside on a single bus GPIB cables have identical stackable connectors at each end allowing several cables to connect to a single source System devices and instruments may be interconnected in almost any desired configuration There must be a path from the controller to every device residing on the bus GPIB cables are available from EADS North America Defense Test and Services in two lengths eGPIB Cable 1 meter 3 28 ft P N 500310 001 eGPIB Cable 2 meters 6 56 ft P N 500310 002 To use the IEEE 488 GPIB interface with the 1257 Switching System you also need a computer equipped with a GPIB controller Adhere to the following guidelines to maximize the data transfer rate of the GPIB system eTotal cable length of no more than 20 meters 65 6 feet eMax
122. ng from the terminal so that the 1257 has sufficient time to execute the commands as they arrive The 1257 provides three flow control options XON XOFF Software flow control The RS 232 device that is receiving data may send an XOFF character ASCII 1910 to the sending device commanding the sending device to suspend data output Later when the receiving device is ready for more data it may send an XON character ASCII 1749 to the sending device indicating that data transmission may be resumed CTS RTS Hardware flow control The 1257 normally holds the RS 232 Clear To Send CTS line in the TRUE state 12 volts When the 1257 is receiving data and needs to have data transmission suspended it takes the CTS line to the FALSE state 12 volts When it is ready for more data it returns the CTS line to the TRUE state Similarly the data terminal uses the RS 232 Request To Send RTS line to pace data coming from the 1257 The data terminal normally holds the RTS line in the TRUE 12 volts state To suspend data from the 1257 it takes the RTS signal to the FALSE state 12 volts To resume data transfer the terminal takes the RTS signal TRUE again Disabled No flow control If your terminal does not support flow control set the 1257 to disable flow control Note that sending large blocks of data without flow control may necessitate a slower baud rate to avoid data overrun problems Setting the Flow Control Option To sele
123. not accept collect shipments Product Support 8 2 EADS North America Defense Test and Services Inc 2001 1257 User Manual Appendix A Specifications General Drawer Interface Front Panel Rear Panel Connectors System Non Volatile Memory Remote Interface IEEE 488 GPIB RS 232 EADS North America Defense Test and Services Inc 2001 Accommodates Single Drawer Vacuum fluorescent display Menu soft keys Optically encoded knob IEEE 488 standard GPIB RS 232 9 pin D SUB Trigger in BNC Trigger out BNC AC power input IEC 100 non volatile memory locations for storage of switch states and user preferences Additional power on state Compliance IEEE 488 2 Address Selection Manual via front panel controls Hardware Protocol Data Communications Equipment DCE Connects directly to computer COM port with straight through cable no null modem Specifications A 1 Command Set Software Drivers Electrical Power Supply Type AC Input Environmental General Temperature Specifications A 2 1257 User Manual Baud Rates 1 200 2 400 4 800 9 600 19 200 38 400 57 600 115 200 Start bits 1 Stop bits 1or2 Number of bits 7 or8 Parity Even odd none Flow Control Software XON XOFF Hardware RTS CTS SCPI Identical to current 1260 Series switch family except for modifications to triggering functions to accommodate non VXlbus operation Drivers and s
124. nstantaneously saved into intermediate volatile memory When all of these intermediate operations are completed the SYSTEM NVUPD command starts the actual process of transferring the contents of intermediate volatile memory into non volatile flash memory with a single slower update For example the command SYST NVUPD EADS North America Defense Test and Services Inc 2001 1257 User Manual will cause the 1257 to start the transfer process The command SYST NVUPD will return ACTIVE during the update process and IDLE at any other time or after the update process has completed Attempting to change intermediate memory during a flash update cycle is prohibited To illustrate this point sending a MOD SAV while SYST NVUPD returns ACTIVE will cause the 1257 to ignore the request and push an error onto the system error queue These commands are NOT defined in the SCPI standard These commands follow the syntax rules of SCPI to implement this functionality EADS North America Defense SCPI Command Basics 5 41 Test and Services Inc 2001 1257 User Manual This page was left intentionally blank SCPI Command Basics 5 42 EADS North America Defense Test and Services Inc 2001 1257 User Manual Chapter 6 SCPI COMMAND REFERENCE General This section contains a detailed description of each command that is either specific to the 1257 or common to multiple switch modules The command
125. nterfaces 4 2 1257 User Manual The Ethernet standard provides a way to interconnect devices on a common network covering long distances A network may contain as few as two nodes devices A network connecting more than two devices requires the use of a hub but these are inexpensive and readily available and simple to connect They allow many devices to interconnect and communicate with one another To use Ethernet with the 1257 Switching System you need a computer equipped with an Ethernet port and an Ethernet cable The 1257 uses a CAT 5 Ethernet cable consisting of four twisted pair wires terminated by a standard RJ 45 modular plug at each end To connect the 1257 to an Ethernet hub use a CAT 5 cable that is constructed in a straight through configuration Connector 1 Connector 2 Pin 1 TX4 Pin 1 TX Pin 2 TX Pin 2 TX Pin 3 RX Pin 3 RX Pin 6 RX Pin 6 RX Pins 4 5 7 8 Unused To connect the 1257 directly to the RJ 45 port on a computer use a CAT 5 cable that is made in a crossover or reverse configuration Connector 1 Connector 2 Pin 1 TX Pin 3 RX Pin 2 TX Pin 6 RX Pin 3 RX4 Pin 1 TX Pin 6 RX Pin 2 TX Pins 4 5 7 8 Unused EADS North America Defense Test and Services Inc 2001 1257 User Manual To maximize the data transfer rate of an Ethernet based system e Use CAT 5 compliant cable e Avoid sharp bends or kinks in the cable
126. ntrols 3 3 Test and Services Inc 2001 1257 User Manual 4 Rotate the knob one more click to the right The display shows e SE D imu 2 OPERATIONS Drawer 1260 CDS Channel 100 Status Open Now the OPERATIONS menu is active This menu contains the functions for operating the relays 5 Press the third keypad switch corresponding to the third display line This selects the third line indicated by the selection symbols gt and lt e SS Bae F aa OPERATIONS Drawer 1260 CDS gt Channel 100 lt Status Open Line 2 indicates that the 1257 contains a 1260 CDS drawer Line 3 displays the selected channel in this drawer 6 Rotate the knob to the right As the knob rotates the channel number displayed on line 3 increments Stop when the channel number reaches 102 e SE E meet eeneg Using the Front Panel Controls 3 4 OPERATIONS Drawer 1260 CDS gt Channel 102 Status Open EADS North America Defense Test and Services Inc 2001 1257 User Manual Line 4 shows the status of the channel path 7 Press the fourth keypad switch corresponding to line 4 of the display OPERATIONS SS T Drawer 1260 CDS amp Las Channel 102 gt Status Open lt 8 Rotate the knob
127. number For most applications this is set to none EADS North America Defense Test and Services Inc 2001 1257 User Manual To set these parameters proceed as follows 1 Press the top key Rotate the knob until the top line reads SETTINGS lt 2 Select line 2 next to top line by pressing the second key This selects line 2 so that you may select the type of setting to work with cem SEITINGS gt Type Display lt Option Format Status Decimal 3 Rotate the knob until line 2 reads as shown below lines 3 and 4 may differ Gees SETTINGS gt Type RS 232 lt Option Data Bits Status 8 4 Press the third key to select line 3 of the display Rotate the knob until line 3 indicates the desired parameter as shown below in this example the parity option is chosen SoS SETTINGS Type RS 232 Option Parity lt Status Even 5 If line 4 of the display already indicates the desired choice for the parameter then no action is necessary Otherwise press the fourth key Rotate the knob until line 4 displays the desired choice in this example None is the desired choice sede SETTINGS Type RS 232 Option Parity lt Update None Then press the fourth key to confirm the update Pressing any other button cancels the change Set the data terminal or computer to match the settings you select for the 1257 EADS No
128. of the presently defined path names The format for this command is EADS North America Defense SCPI Command Basics 5 33 Test and Services Inc 2001 Reading the Channel List for a Path Name Storing Path Names in Non Volatile Memory SCPI Command Basics 5 34 1257 User Manual ROUTe PATH CATalog The reply to this command consists of the presently defined path names each of which is separated by a comma Path names are stored internally in upper case characters by the 1257 These upper case names are returned in the reply For example suppose the following commands have been executed PATH DEFINE dmm 2 pinl 1 117 1 17 PATH DEFINE dmm 2 pin2 1 116 1 14 1 23 PATH DEFINE cntr 2 pini 1 217 1 24 PATH DEFINE cntr 2 pin2 1 216 1 37 1 3 Then the query PATH CAT returns the reply DMM 2 PIN1 DMM 2 PIN2 CNTR 2 PINI1 CNTR 2 PIN2 The module address associated with a module name may be read using the PATH DEFINE query The syntax for this command is ROUTe PATH DEFine path name gt Using the example in the previous section of this manual the query PATH DEFINE dmm to pinl1 returns the reply 1 117 1 17 All paths presently defined may be prepared for storage in non volatile memory using the PATH SAVE command EADS North Ame
129. oft front panels for 1257 Drawers Switched mode PWM 90VAC to 250VAC auto ranging 47 63Hz MIL T 28800E Type Ill Class 5 Style F Operating 20 to 60 C Storage 40 C to 70 C EADS North America Defense Test and Services Inc 2001 1257 User Manual Humidity Altitude Shock Vibration Bench Handling EMC Immunity Emissions Safety Safety Mechanical Dimensions Chassis Weight EADS North America Defense Test and Services Inc 2001 95 non condensing Operating 10 000 feet Storage 15 000 feet 30g 11ms 1 2 sine wave 0 013 in P P 5 55Hz 4 inch drop at 45 EN61326 Class A Table 1 EN61326 Class A Table 3 CE EN61010 1 3 5 high 16 6 wide 11 3 deep 7 Ibs 11 oz 3 5 kg Specifications A 3 1257 User Manual This page was left intentionally blank Specifications A 4 EADS North America Defense Test and Services Inc 2001 1257 User Manual Appendix B RACK MOUNTING Items Included The rack slide kit P N 407813 includes the following items Slide Bracket Short 921656 2 Slide Bracket Long 2 921656 001 3 Slide Mount Kit With Slides 1 921657 026 Instructions and Mounting Hardware CAUTION DO NOT attempt to support the mainframe in the rack with the rack mount ears only Right angle runners or a base plate MUST be used to support the mainframe if slides are not used Installing the 1257 NOTE Using Slides
130. on Defining a Scan List A Scan List may be defined using the SCAN command The syntax for the SCAN command is shown below ROUTe SCAN scan list DELete ALL SCAN The scan list is the same as a channel list used with the CLOSE OPEN and PATH commands but with one addition special keywords may be used to indicate that all channels controlled by the 1257 are placed in the state as recalled from nonvolatile memory In short the scan list is comprised of A Individual channel designators Examples 1 0 1 37 1 323 B A list of single channels separated by commas 1 0 2 4 6 1 9 2 1 10 C A range of relays separated by a colon 1 1 8 1 10 2 D A path name Pathl Thispath E A state name State names begin with the letters STATE and end with a number between 0 and 100 The following are valid state names STATEO STATE7 State53 Statel00 For example the commands PATH DEF example 1 0 5 10 13 SCAN 81 323 1 0 2 1 8 5 example Advanced SCPI Operations 7 14 EADS North America Defense Test and Services Inc 2001 1257 User Manual 1 0 statel14 1 224 Define a path name example and then define a SCAN list Each time a trigger is received the next channel path or state in the scan list is closed after the previous channel or path is opened Using the SCAN command example above the following sequence of ac
131. onnected 0 00 31 Auto detect Auto detect SCROLL CAPS NUM j Capture Print echo 7 Figure 4 8 Main Communications Screen Click on the File menu then on Properties to display the Properties dialog box shown in Figure 4 9 your screen may differ slightly EADS North America Defense Computer Interfaces 4 27 Test and Services Inc 2001 1257 User Manual Figure 4 9 Properties Dialog Box Click on the Settings tab The Settings dialog box then appears as shown in Figure 4 10 your screen may differ slightly 1256 Properties Figure 4 10 Settings Dialog Box Computer Interfaces 4 28 EADS North America Defense Test and Services Inc 2001 1257 User Manual Click on ASCII Setup HyperTerminal then displays the ASCII Setup dialog box shown in Figure 4 11 ASCII Setup RE m ASCII Sending M Send line ends with line feeds Line delay o milliseconds Character delay fo milliseconds ASCII Receiving Append line feeds to incoming line ends Force incoming data to 7 bit ASCII Iv Wrap lines that exceed terminal width omen _ Figure 4 11 ASCII Setup Dialog Box Using the mouse check the boxes as shown in the figure Make sure all other boxes are unchecked Then click on OK taking you back to Setting Dialog Box Click OK again The main communications screen then appears as shown in Figure 4 8 To finalize the connection click on the Call menu then
132. ontrols 3 7 Test and Services Inc 2001 1257 User Manual OPERATIONS Drawer 1260 CDS gt Channel 100 lt Status Open 3 Rotate the knob until line 3 shows the desired relay channel number which in this example is 104 OPERATIONS Drawer 1260 CDS gt Channel 104 lt Status Open 4 Press the fourth key to select line 4 Rotate the knob until the display reads OPERATIONS Drawer 1260 CDS Channel 104 Set to Closed 5 Press the fourth key again to confirm the closure of the relay channel The relay then closes and the display indicates the updated status on line 4 OPERATIONS Drawer 1260 CDS Channel 104 Status Closed Opening a Relay To open a relay follow the steps given in the above section Closing a Relay except in step 6 rotate the knob until line 4 bottom line of the display reads as shown below OPERATIONS Drawer 1260 CDS Channel 104 Set to Open Then press the fourth key to open the relay Viewing Relay States It is easy to view the states of the relay channels on a switch plug in by using the OPERATIONS menu 1 Press the top key next to the display Rotate the knob until the top line reads OPERATIONS 2 Press the third key to select line 3 of the display channel Using the Front Panel Controls 3 8 EADS North America
133. ower is applied to the 1257 These commands are NOT defined in the SCPI standard These commands follow the syntax rules of SCPI to implement this functionality EADS North America Defense Advanced SCPI Operations 7 19 Test and Services Inc 2001 1257 User Manual NOTE The actual process of updating non volatile memory requires a separate SYSTEM NVUPD command This allows multiple relay states exclude lists include lists and module names to be updated in rapid succession followed by a single slower update of the actual non volatile memory Advanced SCPI Operations 7 20 EADS North America Defense Test and Services Inc 2001 1257 User Manual Chapter 8 PRODUCT SUPPORT EADS North America Defense Test and Services Inc has a Product Support complete Service and Parts Department If you need technical assistance or should it be necessary to return your product for repair or calibration call 1 800 722 3262 If parts are required to repair the product at your facility call 1 949 859 8999 and ask for the Parts Department When sending your instrument in for repair complete the form in the back of this manual For worldwide support and the office closest to your facility refer to the website for the most complete information http www eads nadefense com Use the original packing material when returning the 1257 to EADS Warranty North America Defense Test and Services Inc for calibration or servicing The o
134. permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up EADS North America Defense Computer Interfaces 4 19 Test and Services Inc 2001 Setting the Baud Rate Computer Interfaces 4 20 1257 User Manual To set the baud rate bit rate in bits per second proceed as follows 1 Press the top key Rotate the knob until the top line reads SETTI Select line 2 next to top line by pressing the second key This selects line 2 so that you may select the type of setting to work with pie SETTINGS gt Type Display lt Option Format Status Decimal Rotate the knob until line 2 reads as shown below lines 3 and 4 may differ Soe SETTINGS gt Type RS 232 lt Option Data Bits Status 8 Press the third key to select line 3 of the display Rotate the knob until line 3 appears as shown below aes SETTINGS Type RS 232 gt Option Baud Rate lt Status 2400 If line 4 of the display already indicates the desired baud rate then no action is necessary Otherwise press the fourth key Rotate the knob until the desired baud rate shows on line 4 In this example 9600 is desired EET SETTINGS Type RS 232
135. quency within these ranges Simply connect the 1257 AC power inlet to the power source CAUTION Before connecting the unit to a power source make sure that the installed fuse has the capacity marked on the rear panel of the 1257 For instructions on changing the fuse refer to Figure 2 1 Changing Fuse for Main AC Power FUSE HOLDER FUSE HOLDER COVER Figure 2 1 Changing Fuse for Main AC Power EADS North America Defense Getting Started 2 1 Test and Services Inc 2001 1257 User Manual The 1257 is grounded in accordance with MIL T 28800 protecting the user from possible injury due to shorted circuits CAUTION Use only AC power outlets that have a protective ground DO NOT USE a two conductor extension cord or 3 prong to 2 prong adapter that does not provide a protective ground connection The rear panel AC input socket provides a protective ground terminal The 1257 is supplied with a detachable 3 conductor power cord that connects to this protective terminal Only this cord or an equivalent should be used Connection of the power cord to the power outlet must be made in accordance with the following standard color code Power Outlet Wire Color Function American European Line Live Black Brown Neutral White Blue Ground Earth Green Green Yellow CAUTION Position the 1257 to allow easy access to the power switch on the rear panel CAUTION Using this equipment
136. re detailed explanations EADS North America Defense SCPI Command Basics 5 37 Test and Services Inc 2001 SCPI Version Information SCPI Command Basics 5 38 1257 User Manual The error queue holds up to 15 error messages Each time an error is detected by the 1257 it adds a new error to the error queue Each time the SYSTEM ERROR query is received the oldest least recent error message is returned The syntax for this command is shown below SYSTem ERROor The reply to the SYSTEM ERROR query uses the format error code lt error message gt where error code This parameter is a numeric value This value is 0 if there are no errors remaining in the error queue This value is negative when an error exists on the error queue error message This parameter is a string enclosed in double quotes The error message provides some additional information about the error For example the reply 0 No error indicates that no errors remain on the error queue while the reply 102 Syntax error missing sign indicates that a syntax error was detected in a previous command to the 1257 The reply 350 Queue overflow is returned to indicate that all 15 places in the queue have been occupied and that the error queue is full The SYSTEM VERSION query provides information about which SCPI standard the 1257 references and is required for compliance with SCPI The syn
137. rica Defense Test and Services Inc 2001 1257 User Manual NOTE The actual process of updating non volatile memory requires a separate SYSTEM NVUPD command This allows multiple relay states exclude lists include lists and module names to be updated in rapid succession followed by a single slower update of the actual non volatile memory Closing Channels The CLOSE command may be used to close channels To say a channel is closed it means either a The input of the channel is connected to the output Single Pole Single Throw b The input of the channel is disconnected from the normally closed output and connected to the normally open output Single Pole Double Throw c The common input of a mux is connected to the output denoted by the channel number The syntax for the CLOSE command is ROUTe CLOSe lt channel list gt The format for a lt channel list gt is described in the previous paragraphs of this section of the manual The CLOSE command may be used to query the present state of the relays in the system This command returns a reply of a sequence of 0 and 1 each of which are separated by a single ASCII space character The value of the reply is O if the corresponding relay is opened or 1 if the corresponding relay is closed The reply is one for one with the lt channel list gt For example assume channels for a particular relay module at module address 7 are nu
138. riginal shipping container and associated packaging material will provide the necessary protection for safe reshipment If the original packing material is unavailable contact EADS North America Defense Test and Services Inc Customer Service at 1 800 722 3262 for information EADS North America Defense Product Support 8 1 Test and Services Inc 2001 1257 User Manual REPAIR AND CALIBRATION REQUEST FORM To allow us to better understand your repair requests we suggest you use the following outline when calling and include a copy with your instrument to be sent to the EADS North America Defense Test and Service Inc Repair Facility Model Serial No Date Company Name Purchase Order Billing Address City State Province Zip Postal Code Country Shipping Address City State Province Zip Postal Code Country Technical Contact Phone Number Purchasing Contact Phone Number 1 Describe in detail the problem and symptoms you are having Please include all set up details such as input output levels frequencies waveform details etc 2 H problem is occurring when unit is in remote please list the program strings used and the controller type 3 Please give any additional information you feel would be beneficial in facilitating a faster repair time i e modifications etc 4 Is calibration data required Yes No please circle one Call before shipping Ship instruments to nearest support office Note We do
139. rth America Defense Computer Interfaces 4 23 Test and Services Inc 2001 1257 User Manual NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up Using Microsoft One of the easiest ways to manually control the 1257 through the RS 232 interface is to use HyperTerminal HyperTerminal is a HyperTerminal terminal emulation program that is included with Windows 95 and 98 Before using HyperTerminal or any other terminal emulation program set up the 1257 RS 232 parameters as follows refer to the above sections for details about accessing these settings via the front panel controls Baud rate 9600 Data Bits 8 Parity None Stop Bits 1 Flow Control Disabled EOL Mode CR LF To run HyperTerminal click on Start click on Run then type hypertrm use the exact spelling above Then press Enter The HyperTerminal program then starts and displays the Connection Description dialog box as shown in Figure 4 5 Computer Interfaces 4 24 EADS North America Defense Test and Services Inc 2001 1257 User Manual Connection Description RE New Connection Enter a name a
140. run conditions do not occur If software flow control is selected and the input buffer reaches 80 capacity the 1257 will send an XOFF character to the host The 80 threshold provides a reasonable safety margin to allow for host software overhead When the input buffer reaches the 60 capacity threshold the 1257 will send an XON character to the host to resume data transfer If hardware flow control is selected and the input buffer is full the RTS signal from the 1257 will assert indicating to the remote host than no further characters will be received As soon as room exists in the input buffer the RTS signal will de assert indicating that room exists in the input buffer To make a flow control selection select SETTINGS on the top line then select Type RS 232 on the second line and then Option FlowCtrl on the third line Then choose the appropriate setting on the bottom line The default power up state of the instrument is no flow control To select a different power up state this setting like all other menu options can be saved to non volatile memory For further details on front panel usage refer to Chapter 3 USING THE FRONT PANEL CONTROLS The 1257 waits for a linefeed carriage return or carriage return line feed will also work in RS 232 mode if the 1257 is configured properly or GPIB EOI terminator before any command is parsed If 1024 characters are sent to the 1257 without any EADS Nor
141. s for identifying and locating these problems Confidence Mode The 1257 supports an operational mode that performs a high level system wide verification When Confidence Mode is enabled the 1257 checks the status of all switches after it closes or opens any of them The syntax for the command is shown below ROUTe MONitor STATE ON 1 OFF O If any relay is not in the correct state and Confidence Mode is Advanced SCPI Operations 7 16 EADS North America Defense Test and Services Inc 2001 1257 User Manual enabled the 1257 pushes an error message onto the system error queue and asserts the Execution Error bit in the Event Status Register If the 1257 is accessed through the GPIB interface this condition can further be made to generate an SRQ interrupt This is accomplished by writing a 1 into the Execution Error mask bit of the Standard Event Status Register and a 1 into the ESB mask bit of the Service Request Enable Register Using Relay The 1257 system also supports the ability to verify that a switch or T a range of switches is closed or open The syntax for these Verification commands is shown below ROUTe VERify ALL MASK channel list O 1 X MASK channel list The 1260 line of drawers used in the 1257 typically utilizes open drain or open collector drivers A separate signal between the coil of each relay and associated driver feeds back into the
142. s are presented in Table 6 1 The commands accepted by the 1257 are shown using the SCPI syntax notation The command syntax in Table 6 1 is displayed using the following conventions Square Brackets Enclose optional keywords or parameters Braces Enclose possible parameters within a command Triangle Brackets lt gt Substitute a value for the enclosed parameter Vertical Bar Separate multiple parameter choices Bold Typeface Letters Designate factory default values Command Only This indicates the command cannot be used in query form Query Only This indicates the command can only be used as a query The command form without the question mark is not allowed To illustrate the SCPI notation a part of the ROUTE command subsystem is shown below ROUTe CLOSe lt channel list gt OPEN lt channel list gt ALL Command Only EADS North America Defense SCPI Command Reference 6 1 Test and Services Inc 2001 1257 User Manual This example shows the following The ROUTE command keyword is optional since it is enclosed in square braces The ROUTE command keyword may be specified as ROUTE long form or as ROUT short form since the last character is displayed in lower case The CLOSE keyword must be followed by a lt channel list gt A lt channel list gt represents any of a number of possible channels in a variety of formats The format for the lt channel list gt and oth
143. s command is TRIGger SEQuence DELay trigger delay The trigger delay is a real number between 0 0 and 10 0 The trigger delay is programmed in seconds with a resolution of 1 microsecond This is the resolution and not the accuracy That means that you will receive 0 00000 5 decimal places when you read it Any delay over 10 milliseconds rounds the delay to the nearest 10 milliseconds When a non zero trigger delay is programmed the 1257 perform an idle wait for the trigger delay period before acting on the trigger The present trigger delay may be queried by using the TRIGGER DELAY command Advanced SCPI Operations 7 8 EADS North America Defense Test and Services Inc 2001 1257 User Manual Arming and Before scanning of channels can be performed the 1257 must be armed Arming is accomplished with the INITIATE command The Disarming the 1257 syntax for the INITIATE command is INITiate IMMediate ON 1 OFF 0 CONTinuous ON 1 OFF 0 The INITIATE IMMEDIATE command arms the 1257 This enables the 1257 to accept new triggers and continue scanning Each time the INIT IMMEDIATE command is received by the 1257 it enables triggering for the scan list Each time this command is received the number of elements which may be scanned is set to the trigger count Each time the INIT IMMEDIATE command is received scanning resumes from the point at which it was stopped NOT from
144. s do not use all four lines of the display When a line is unused or contains nothing that the user can change the LED in the corresponding key is not illuminated Pressing such a key has no effect However when the LED in a key is illuminated that key represents a line that can be edited In the above example the second line of the display which details the drawer type and model number is informational only Consequently this line would not have the key LED illuminated This menu system is easy to use because the display shows all levels simultaneously In addition the user may instantly go to a higher level by simply pressing the corresponding key At the top of the menu hierarchy on the first display line are five menus for selecting the general function categories These menus and the functions they include are The Five Menus e Operations Open and close channels on the drawer e Path Control Open and close user selected pathnames stored in non volatile memory paths must be defined and stored through the remote user interface prior to accessing them through the display e Settings Set menu preferences such as IEEE 488 address RS 232 baud rate and display brightness Using the Front Panel Controls 3 6 EADS North America Defense Test and Services Inc 2001 1257 User Manual e Store Recall Store switch states and menu preferences to non volatile flash RAM and recall these states and preferences e Syste
145. s mode by rotating the knob until line 2 reads as shown below lines 3 and 4 may differ SES SETTINGS gt Type Remote lt Option Lockout Status Disabled 4 Press the third key to select line 3 of the display Rotate the knob until line 3 indicates the Source option as shown below Lee SETTINGS Type Remote Option Source lt Status GPIB 5 If line 4 of the display already indicates the status as TCP IP then the GPIB interface is already active no further action is necessary Otherwise press the fourth key Rotate the knob until line 4 indicates TCP IP e SETTINGS Type Remote Option Source lt Update TCP IP Then press the fourth key to confirm the update Pressing any other button cancels the change NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up When connecting the 1257 to an Ethernet network you must assign it a unique TCP IP address a gateway and a subnet mask The front panel controls must be used to make these settings Two modes are available e Dynamic Host Configuratio
146. ssing the line 1 key will effectively abandon any changes made to the mask and revert back to the prior mask Settings Menu Description The Settings Menu provides control of the following options e Remote interface source TCP IP Ethernet GPIB or RS 232 e Local lockout during remote operations enabled or disabled e TCP IP Ethernet parameters such as TCP IP address gateway and sub net mask e RS 232 parameters such as baud rate and parity e GPIB address and SRQ settings e Display format hexadecimal decimal or binary e Display intensity brightness e Display screen saver enabled or disabled e Screen saver timeout in minutes Selecting the Remote Interface Source The user may control the 1257 remotely by the Ethernet GPIB or RS 232 interfaces To select one of these as the active interface follow these steps 1 Press the top key next to the display Rotate the knob until the top line reads SETTINGS lt 2 Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads Type Remote as follows ces SETTINGS gt Type Remote lt Option Lockout Status Disabled 3 Select line 3 by pressing the third key Rotate the knob until line 3 reads as shown below EADS North America Defense Using the Front Panel Controls 3 13 Test and Services Inc 2001 1257 User Manual SE SETTINGS T
147. st and Services Inc 2001 1257 User Manual Chapter 4 COMPUTER INTERFACES Introduction The 1257 Switching System provides the following remote interfaces for controlling the 1257 e TCP IP Ethernet Transmission Control Protocol Internet Protocol TCP IP is a local area network LAN standard that operates over long distances The 1257 supports 10Base T 10 M bit s and 100Base TX 100 M bit s Ethernet networks e EEE 488 Also known as the General Purpose Interface Bus GPIB IEEE 488 is commonly used in test and measurement applications e RS 232 Originally developed for modems and data terminals the RS 232 interface is now common for controlling a wide range of products The remote interface allows computers to access the operating features of the 1257 by sending commands manually or automatically via a computer program Commands The 1257 remote interfaces comply with the Standard Commands for Programmable Instruments SCPI a universal programming language for test and measurement instruments Chapter 5 SCPI COMMAND BASICS introduces SCPI and discusses the commands most frequently used with the 1257 For a discussion of all commands that may be used via the 1257 remote interfaces see Chapter 6 SCPI COMMAND REFERENCE EADS North America Defense Computer Interfaces 4 1 Test and Services Inc 2001 Using the Ethernet Interface Basic Ethernet Information Ethernet Cabling Guidelines Computer I
148. t line 3 next to the top line by pressing the third key This allows the pathname to be selected from a list of those that are presently defined in the 1257 switching system PATH CONTROL Select Filter Mask gt PATH1 lt Status Open 3 Rotate the knob until line 3 indicates the desired pathname PATH2 for this example PATH CONTROL Select Filter Mask gt PATH2 lt Status Open 4 Press the fourth key to select line 4 Rotate the knob until the display reads PATH CONTROL Select Filter Mask PATH2 Set to Closed 5 Press the fourth key to confirm the closure of the desired pathname The entire path then closes and the display indicates the updated status on line 4 PATH CONTROL Select Filter Mask PATH2 Status Closed lt Using the Front Panel Controls 3 10 EADS North America Defense Test and Services Inc 2001 1257 User Manual Opening a Path To open a relay follow the steps given in the above section Closing a Relay except in step 4 rotate the knob until line 4 bottom line of the display reads as shown below oOPATH CONTROL Select Filter Mask PATH2 Set to Open Then press the fourth key to open the relay Viewing Path States It is easy to view the states of pathnames on a 1257 system from the PATH CONTROL menu 1 Press the top key next to the display Rotate the knob until the top line reads gt P
149. t state gt Command Only 0 100 100 5 7 5 18 OPT Query Only 5 7 WAI 5 20 no function in the 1257 EADS North America Defense SCPI Command Reference 6 5 Test and Services Inc 2001 1257 User Manual This page was left intentionally blank SCPI Command Reference 6 6 EADS North America Defense Test and Services Inc 2001 1257 User Manual Chapter 7 ADVANCED SCPI OPERATIONS Introduction Using ROUTE CONFIGURE to Control Switching Sequence The 1257 Switching System offers a number of advanced functions to give you precise control over the instrument These functions can be accessed only via the IEEE 488 GPIB and RS 232 interfaces The ROUTE CONFIGURE command controls the sequence in which relays are opened and closed when more than one relay has been commanded to change The command has the form ROUTE CONFIGURE lt module address gt lt seqmode gt The lt seqmode gt parameter may be one of three modes e IMM Immediate Causes channels relays to be opened and closed as quickly as possible The sequence of opening and closing is indeterminate In this mode care must be taken to avoid damaging equipment while the relays are in transition i e by short circuiting power supplies connecting high power outputs together or applying excessive power to low impedance inputs e BBM Break Before Make Causes existing channel closures to be opened before new channel closures are
150. t to identify and trace They also tend to be intermittent which further compound troubleshooting efforts If the 1257 will be used on a central network contact the network administrator for an assignment or a block assignment of addresses Make sure that the assigned subnet mask for a 1257 system is consistent with the class of network For example a class C network i e 192 168 X X would typically have a subnet mask of 255 255 255 0 A class B network i e 172 16 X X would typically have a subnet mask of 255 255 0 0 Most private networks found inside commercial industrial environments are typically contiguous which means that one instrument can communicate directly to other computers and equipment without the assistance of an intermediate gateway In this situation the gateway address need not be specified in the 1257 If the 1257 exists in a network that has individual subnets isolated by gateways or bridges the gateway parameters must also be specified or the 1257 will only be able to communicate with computers and equipment local to its own subnet To select manual mode proceed as follows 1 Press the top key which will select line 1 top line Rotate the knob until the top line reads SETTINGS lt Select line 2 next to top line by pressing the second key Rotate the knob until the display shows line 2 as follows lines EADS North America Defense Test and Services In
151. t until the number of triggers equal to the trigger count is received After that it is disarmed and must be rearmed again The 1257 may also be manually disarmed with the ABORT command uu UOS 6 Command ABORT ARMED Trigger Received Scan Action Complete Command INIT IMMEDIATE and Triggers lt Trigger Count y Scan Action Complete amp gU 9x Trigger Trigger Count Es d lt Command TRIG IMMEDIATE r GEN IDLE SCAN lt d Scan Action Complete After N Fi GE TRIG IMMEDIATE DOE Command INIT CONTINUOUS FEM as Trigger Received TRIGGER ARMED ACTION lt SCAN Scan Action Complete Command ABORT CONTINUOUS Figure 7 1 State Transition Diagram For Arming and Triggering the 1257 Generating a Single The 1257 may be armed and a single trigger may be sent using Trigger the TRIGGER IMMEDIATE command The syntax for this command is TRIGger SEQuence IMMediate This command is equivalent to the following A Programming the trigger source Advanced SCPI Operations 7 10 EADS North America Defense Test and Services Inc 2001 1257 User Manual Output Trigger Signals from the 1257 Selecting an Output Trigger Destination B Arming the 1257 with an INIT IMMEDIATE command C Sending a single trigger on the selected trigger source This command may be used to execute the next step of a scan list The 1257 may be programmed to generate
152. tax for this command is shown below EADS North America Defense Test and Services Inc 2001 1257 User Manual SYSTem VERSion For example the query SYST VERS always returns the following 1994 0 User Interface The syntax for this command is shown below Lockout SYSTem KLOCK ON OFF KLOCK The SYSTEM KLOCK command and SYSTEM KLOCK query are used to both control and determine the present state of the user interface In certain applications or environments where the 1257 is under automatic control it may be desired or required that access to the 1257 be prohibited through the front panel user interface For example the command SYST KLOCK ON will cause the 1257 to display a remote operation screen on the display with a message indicating that local mode is in a lockout condition The command SYST KLOCK OFF will also display a remote operation screen however the fourth line will indicate a local option the user can activate by pressing the fourth line soft key To query the present lockout state SYST KLOCK will reply with either ON or OFF depending on the present state of the 1257 The 1257 operates in either automatic or manual user interface EADS North America Defense SCPI Command Basics 5 39 Test and Services Inc 2001 Non Volatile Update SCPI Command Basics 5 40 1257 User Manual lockout mode In either case the 1257 will always power up in local mode In m
153. th America Defense SCPI Command Basics 5 25 Test and Services Inc 2001 1257 User Manual terminators the 1257 will flush both input and output buffers and then queue and error message Because the 1257 uses an input buffer to store commands it is possible that multiple CLOSE or OPEN commands may be stored in the input buffer before the first command is executed To synchronize the application program with the 1257 and to ensure that relays are in the programmed state a query may be sent to the 1257 Once the reply to the query is read you can be sure that the relays are in the programmed state For example the following command sequence may be used CLOSE 81 0 OPEN 61 12 CLOSE 1 17 OPEN 81 16 18 OPC read the reply Once the reply from the OPC query is read all of the previous relay operations have been completed Reply Output Buffer The 1257 maintains an output buffer for sending replies to commands This buffer is 1024 characters in length Although unlikely the output buffer could become filled with replies to commands If the output buffer is filled the SCPl defined QUERY Deadlock condition will be detected by the 1257 In this case the output buffer will be cleared and an error will be added to the error queue In addition the query error bit QYE of the IEEE 488 2 Standard Event Status Register will be set The error queue may be read using the SYST ERR
154. the beginning of the scan list That is if the commands SCAN 81 0 19 TRIG COUNT 3 TRIG SOUR BUS INIT IMMEDIATE are executed the 1257 will accept up to 3 triggers After the third trigger scanning will be disabled since the trigger count value has been reached At this point channel 2 will be closed because it is the third element in the scan list Now if a second INIT IMMEDIATE command is received the 1257 will accept up to 3 more triggers The first trigger received will open channel 2 and close channel 3 The INIT CONTINUOUS command also arms the 1257 This command allows the 1257 to continuously scan through the channels in the scan list The 1257 will NOT stop scanning after the number of triggers equal to the trigger count have been received This command effectively bypasses the trigger count limit The ABORT command disarms the 1257 Once the 1257 receives the ABOR or ABORT command it will not perform any scan list actions until it is rearmed by using the INIT IMMEDIATE or INIT CONTINUOUS commands At power up and after executing a RST command the 1257 is disarmed EADS North America Defense Advanced SCPI Operations 7 9 Test and Services Inc 2001 1257 User Manual The trigger and arm state diagram is shown in Figure 7 1 This diagram shows that the 1257 must be armed before it responds to triggers Once it is armed it remains armed and sequences through the scan lis
155. the manual IEEE 488 2 Status The IEEE 488 2 Status Reporting Model is shown in Figure 5 1 T This figure shows how the status reporting data structures are Description implemented and the commands used to set and read each of the registers While the GPIB operational mode of the 1257 is fully compliant with this standard it is impossible for the 1257 or any instrument operating in the RS 232 operational mode for that matter to satisfy the IEEE status requirements in all respects A good example of non compliance relates to the SRQ SRQ is a feature that does not exist in RS 232 communications EADS North America Defense SCPI Command Basics 5 7 Test and Services Inc 2001 1257 User Manual 5 u o z P B B E E 8 Ms g wu 5 6 6855252 25565 p X E og Be 5 F 5 ZS Es 38 S a 3 oO ui A G ZS oO Standard T 6 5 4 3 2 1 0 Event Status Register Y ESR qt Ow SE ll n B Y wll EE E EE Queue EE SE Ke EE Not Empty Standard MERE Event Status Enable 7 6 5 Register ESE value GE ESE Output Queue ECKE SE St S mta M ei EE l i lt read by Serial Port Service Bee ESBMAV 3 2 1 0 Status Byte Register A read by STB l l l l I I CM DEP ov WE d Ae Service Request lr eder i 312
156. the path is removed remotely using the SCPI path delete command If the intent is to define the pathnames and make them accessible to the front panel after power is cycled to the 1257 the defined pathnames must also be stored in non volatile memory Refer to Storing Path Names in Non Volatile Memory section in Chapter 5 for more details It is important to realize that the SCPI command language allows pathname lengths that exceed the display capability of the 1257 EADS North America Defense Using the Front Panel Controls 3 9 Test and Services Inc 2001 1257 User Manual 18 characters If pathnames are defined greater than 18 characters only the first 18 characters will be visible lt is also only possible to selectively filter the first 18 characters using the display filler masks Characters extending beyond this limit are treated with wildcards when the filter mask is applied Closing a Path The 1257 front panel enables the user to manually close and open pathnames For example suppose four pathnames have been defined using the remote interface for a combination of different relays and plug in cards PATH1 PATH2 PATHS and PATH4 1 Press the top key next to the display This selects the top display line so that you can change it The selection markers gt and appear on the line to indicate that it is selected Rotate the knob until the top line reads gt PATH CONTROL 2 Selec
157. the range O to 100 If location is not specified it will default to 100 Location 0 has a special purpose This location is used by the 1257 at power up to set the initial relay states The RCL command recalls the states of all relays in the system The relay states are stored using the SAV command Note that path names module names status registers include lists and so on are NOT affected by the RCL command The SAV command will prepare to store a given state into non volatile memory The actual process of updating non volatile memory requires a separate SYSTEM NVUPD command This allows multiple relay states exclude lists include lists and module names to be updated in rapid succession followed by a single slower update of the actual non volatile memory The SAV command accepts one of two formats SAV SAV location If location is specified it must be in the range from O through 100 If location is not specified the instrument state will be saved into non volatile memory location 100 EADS North America Defense Test and Services Inc 2001 1257 User Manual State 0 is recalled at power up The 1257 is shipped without any data in state 0 This effectively tells the 1257 to open all relays at power up This default may be overwritten by placing all relays in the desired power up state and then executing the command SAV O0 In the manner indicated earlier a separate SYSTEM NVUPD command
158. then skip to the next step au SETTINGS Type TCP IP Option IP Oct 1 Update 197 Then press key 4 again to confirm Select line 3 Rotate the knob until line 3 shows IP Oct 2 as follows SETTI Computer Interfaces 4 7 Computer Interfaces 4 8 1257 User Manual Type TCP IP gt Option IP_Oct_2 lt Status 0 4 If line 4 does not already show the desired second octet of your address then select line 4 Rotate the knob until line 4 shows the second octet of your address for IP address 197 23 0 123 the second octet is 23 Steeg SETTINGS Type TCP IP gt Option IP Oct 2 lt Update 23 5 Press key 4 again to confirm 6 Continue in this manner setting the third and fourth octets of your IP address Setting the Gateway Setting the gateway is similar to setting the IP address The gateway is made up of four octets Set the gateway by entering the four octets one at a time 1 Press key 3 to select line 3 Rotate the knob until line 3 appears as follows line 4 may differ rm SETTINGS Type TCP IP Option GW Oct 1 Status O0 This prepares the 1257 to set the first octet eight bits of the gateway 2 Select line 4 and rotate the knob until line 4 displays the first octet of your desired gateway Then press key 4 again to confirm 3 Proceed with the remaining octets o
159. tions occurs A After a trigger is received channel 323 is closed B After the next trigger channel 323 is opened channel 0 is closed C After the next trigger channel O is opened channel 1 is closed D After the next trigger channel 1 is opened channel 2 is closed E After the next trigger channel 2 is opened channel 8 is closed F After the next trigger channel 8 is opened channel 7 is closed G After the next trigger channel 7 is opened channel 6 is closed H After the next trigger channel 6 is opened channel 5 is closed After the next trigger channel 5 is opened and all channels defined for the path example are closed channels 0 5 10 and 13 J After the next trigger all the channels defined for the path example are opened and channel 0 is closed K After the next trigger channel 0 is opened and the state of all channels controlled by the 1257 is recalled from nonvolatile memory The state of the relays is recalled from state location 14 L After the next trigger channel 224 is closed Note that the channels recalled from nonvolatile memory are NOT opened M After the next trigger channel 224 is opened and channel 323 is closed The scan list has wrapped around to the beginning of the list Each time the SCAN command is executed the previously defined EADS North America Defense Advanced SCPI Operations 7 15 Test and Services Inc 2001 1257 User Manual scan
160. to select an input trigger source This input trigger source should be the external trigger input The TRIGGER SOURCE command is used to select the input trigger C Program the 1257 to generate a trigger each time a relay is closed The output trigger must be enabled through the OUTPUT TRIGGER command D Program the DMM or other instrument to select an output trigger source The output trigger source should be the input trigger source of the 1257 as indicated in step B above E Program the DMM to select an input trigger source The input trigger source should be the output trigger line of the 1257 as indicated in step C above F Program the DMM to select a trigger count which sets the number of channels to scan through G Program the DMM to select the number of readings to store H Send the command TRIGGER IMMEDIATE to the 1257 to initiate the Scan operation I Repeatedly query the DMM to wait until the measurements have completed J Read the measurements from the DMM The commands used to program the DMM or other instrument depend on the instrument being used Consult the user documentation of the instrument for a description of how to EADS North America Defense Advanced SCPI Operations 7 13 Test and Services Inc 2001 1257 User Manual perform steps D E G J and K above The remainder of this section describes how to define a scan list select input and output trigger sources and so
161. tor at each end The male connector connects to the 1257 and the female connector connects to the data terminal or computer If you wish to make your own cable Figure 4 4a provides the details RS 232 Interface Connector RS 232 Cable D p 9 e e e e e e e e o e 9 e 6 e e e e 9 RS 232 Connector N 6 ee Vm GC e EI e Qoo ep Connecting to a Modem Figure 4 3 Using the RS 232 Interface If you wish to connect the 1257 directly to a modem instead of a computer or data terminal the connection will be DCE to DCE A DCE to DCE connection requires a special serial cable known as a null modem In a null modem cable the Received Data RxD and Transmitted Data TxD signals are reversed at one connector and the Clear to Send CTS and Request to Send RTS signals are also reversed at one connector This can be accomplished by constructing a special nine pin serial cable with the signals wired as shown in Figure 4 4b Using the 1257 with a Modem Note that the RS 232 connector at the 1257 is a 9 pin female D Subminiature DB 9 type EADS North America Defense Computer Interfaces 4 15 Test and Services Inc 2001 1257 User Manual 9 PIN D SUB 9 PIN D SUB CONNECTOR CONNECTOR MALE FEMALE d STRAIGHT THROUGH NINE PIN RS 232 CABLE CONNECT TO 1256 CONNECT TO COMPUTER gt CABLE CONNECTIONS PIN 2 RXD PIN 2 RXD PI
162. ure As a general rule of thumb total current drawn by all switches and actuators should not exceed 12 5 Amps for a 12 Volt power supply up to 50 C ambient and should be de rated by 5095 above this threshold Refer to the drawer manual for additional restrictions and specifications for typical device current drawn EADS North America Defense Getting Started 2 7 Test and Services Inc 2001 1257 User Manual This page was left intentionally blank Getting Started 2 8 EADS North America Defense Test and Services Inc 2001 1257 User Manual Chapter 3 USING THE FRONT PANEL CONTROLS Introd ion The front panel controls allow you to use the main features of the troductio 1257 without the use of a remote interface such as IEEE 488 GPIB or RS 232 This may be useful during initial setup or when troubleshooting a system Table 3 1 Accessibility of Features lists the features of the 1257 and indicates their accessibility via remote interface and front panel controls Table 3 1 Accessibility of Features Accessibility Remote Front Panel Feature Interface Controls Open Close Relays D e Write View Digital Channels e e Select Remote Interface e Set Ethernet Parameters e Set GPIB Parameters e g address e Set RS 232 Parameters e g baud rate parity e Set Display Parameters e g brightness format e screen saver View Firmware Rev Letter e e
163. vide additional status information The SCPI language defines several different data formats to be used in program messages and response messages Commands that require numeric parameters will accept all commonly used decimal representations of numbers including optional signs decimal points and scientific notation EADS North America Defense Test and Services Inc 2001 1257 User Manual TRIG DELAY 0 035 When a real non integer value is returned in a reply from the 1257 the floating point notation will be used The only non integer values returned from the 1257 correspond to the TRIGGER DELAY and the OUTPUT DELAY The values will be a number between 0 0 and 10 0 At most 6 digits follow the decimal point Integer values may be sent in the command using decimal octal hexadecimal or binary values The default base for values is decimal To specify a hexadecimal value use the prefix H To specify an octal value use the prefix Q To specify a binary value use the prefix B The following values are all equivalent 123 123 decimal B1111011 1111011 binary 123 decimal H7B 7B hex 123 decimal 0173 173 octal 123 decimal When an integer value is returned in a reply from the 1257 the value will be a decimal number Discrete Parameters Discrete parameters are used to program settings that have a limited number of values Parameters are NOT case sensitive As an example of the d
164. were stored directly in non volatile RAM the user would have to wait several seconds for each store operation This may not always be an inconvenience when working with the front panel controls but would certainly slow down software that automatically sets up and stores many presets To avoid the delay after storing each preset the presets are written to a temporary area of the static random access memory SRAM This memory is volatile will erase upon power down but is very fast This allows presets to be stored rapidly Once the last desired preset has been stored the presets stored in SRAM known as the SRAM image may be written to non volatile RAM all at once Since the non volatile RAM is block oriented it takes the same amount of time to write many presets as to write just one Thus by writing all of the desired presets to non volatile RAM just once much time is saved To update the non volatile RAM with the SRAM image follow these steps 1 Press the top key next to the display Rotate the knob until the top line reads STORE RECALL 2 Select line 2 next to the top line by pressing the second key Rotate the knob until line 2 of the display reads as follows STORE RECALL gt Type NVRAM lt Config Image Status Erase 3 Press the fourth key to select line 4 of the display Rotate the knob until line 4 reads Using the Front Panel Controls 3 22 EADS Nort
165. ype Remote Option Source lt Status RS 232 4 Line 4 now indicates the remote interface source that is active The choices are TCP IP Ethernet GPIB and RS 232 If the choice shown is not the desired one then rotate the knob until the correct choice is displayed EE SETTING Type Remote Option Source lt Update TCP IP Then update to this choice by pressing the fourth key The display now reads SE SETTINGS Type Remote Option Source Status TCP IP lt Before using the remote interface set the communication parameters See Chapter 4 COMPUTER INTERFACES NOTE Menu preferences are not normally retained after the power is removed from the instrument To make a menu preference s permanent make the desired change s to settings first and then proceed to the section Storing the Menu Preferences to make the changes permanent Following this procedure will put the settings into non volatile memory and allow them to be restored during instrument power up Local Lockout In some applications it may be desirable to lock out disable the front panel controls while controlling the 1257 via a remote interface The 1257 provides two types of local lockout e Automatic lockout When the 1257 receives any command via the Ethernet RS 232 or GPIB interfaces it shows a message on the front panel display stating that the unit is in remote operation and which interface TCP

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