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Страница 2: ... support your product This manual provides the best information we could find It may be incomplete or contain dated information and the scan quality may not be ideal If we find a better copy in the future we will add it to the Agilent website Support for Your Product Agilent no longer sells or supports this product You will find any other available product information on the Agilent Test Measureme...
Страница 3: ...ti HEWLETT PACKARD Walt Lofstrom YO HEWLER PACKARD SALES REPRESENTATIVE Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 4: ...upranges at 120 of full scale and downranges at 11 of full scale VOLTMETER STORAGE Store up to 6 0 readings in ASCll 50 for Serial Data or up to 100 readings in Packed BCD 85 in Serial Datal UseVS without number 1 Storc in ASCII to transfer readings to controller 2 Packcd BCD VOLTMETER TRIGGER Set one of four trigger modes In internal DVM automatically takes another readina when Dresent one comole...
Страница 5: ... to controller when control started by TE2 command Data returnsd has format Minutcs 0 to 59 time on real time clock matches time set by TA DDDDDD sec Seconds 0 to 59 I TI HH MM SS TIME INTERVAL 7 1 TIME OF DAY SET Use Tln to generate pulses from TIMER port with periods from 1 sec to 24 hr If SRO or interrupt mask set 3497A sends interrupt TD DDMMHHMMSS Sets 3497A real time clock to programmed time...
Страница 6: ...Option 0 5 0 399 Example 1 4 Using the Counter Option 0 6 0 410 in 3498A 611 Options 0701071 433 Control Applications Switching 614 Option 11 0 457 Example 15 Voltage Switching Option 115 472 Alarm Actuation 614 Option 120 491 Example 16 High Voltage Switching 616 Option 130 501 Control Applications Control Sources 620 Option 140 509 Example 17 Voltage and Current Option 298 533 Sources 6 2 0 Chap...
Страница 7: ...140 Latch Mode Typical Scan Sequence 282 3497A Front and Rear Views 325 Standard HP IB 3497A Front and Rear Panels 326 Figure Page 3497A with Option 232 Front and Rear Panels 327 Line Voltage Selector Switches and Continuous Clock Select Plug 330 AC Power Cords for 3497A 331 Self Test Display 333 Example Installing Plug In Assemblies 336 Typical HP I6 System Inter connection 3 3 8 Connecting the 3...
Страница 8: ...71 Strain Gauge1 Rosette Equations 455 124 Option 11 0 ActuatorIDigital Output Assemblv 4 5 8 Figure 125 126 127 I 2 8 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 I 4 8 149 150 151 152 153 154 155 I 5 6 Page Option 110 Actuator Switching Mode 4 5 9 Option I1 0 Actuator Switching Mode Examples 4 6 0 Option 11 0 Digital Output Mode 461 Option 11 0 lnstallation in 3 4 ...
Страница 9: ... 298 Setting 3497A Power A7 On SRQ 551 A 8 Example 1 DC Voltage A 9 Measurements 559 B1 Example 2 Single Ended Measurements Slots 0 3 562 B2 Example 2 Single Ended B3 Measurements Slot 4 563 8 4 Slot 4 Only 565 Example 3 Data Logging DC Voltage Measurements 569 Example 4 Fast Scan Option 0 1 0 Connections 573 Example 4 Fast Scan Rear Panel Connections 5 7 4 Example 5 2 Wire Resistance Measurements...
Страница 10: ...ation is presented in two main categories depending on the interface connection HP IB or Serial Data RS 232 or RS44914231 you specified for your 3497A This manual is divided into t w o parts PART I OPERATING AND PROGRAMMING THE 3497A shows how to send com mands to the 3497A by using the front panel or from a controller via either HP IB or Serial Data interface and shows how to use these commands t...
Страница 11: ...L OPERATION ACK READY This chapter describes the command structure for the 3497A and shows how to enter com mands from the front panel If you are going to use the 3497A without a controller you should study this chapter carefully Even if you are go ing to use a controller with the 3497A this is the easiest way to learn the command struc ture and addressing schemes used for the 3497A 3497A EXAMPLE ...
Страница 12: ...to refer to this chapter only when your applica tion requires a hardware configuration which is different from the 3497A factory settings DATA FOLLOWING A SELF TEST COMMAND Definition Cross Guard Fails 2E2 Voltmeter Fails 3E3 Timer Fails CHAPTER 6 COMMAND DIRECTORY This chapter contains an alphabetical descrip tion of the six command groups ANALOG COUNTER DIGITAL SYSTEM TIMER and VOLTMETER used to...
Страница 13: ...idelines and manual information This chapter shows how to initially inspect and install and how to configure plug in assemblies Options 010 to 140 and the 3498A Extender Option 2981 including switchljumper settings and typical connections to your system APPENDIX A INTERFACE CONCEPTS Refer to this appendix for introductory informa tion on HP 16 RS 232C and RS 449 interface concepts Maximum Input Vd...
Страница 14: ...uld follow depend on the way that you are going to use the 3497A If you are going to use the 3497A with a controller see USING THE 3497A WITH A CONTROLLER which follows If you are going to use the 3497A in stand alone mode without a controller skip to USING THE 3497A IN STAND ALONE Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 15: ...ECEIVE 3497A 0 PROGRAMMING INFORMATION HP IB GENERAL i Chapter 3 9 SERIAL DATA 3 Chapter 4 9 MAINFRAME AND ASSEMBLY CONFIGURATION STANDARD Chapter 7 Chapter 8 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 16: ... 4 and observe the display and or printout After you have become familiar with the command structure see Chapter 5 Con trolling the 3497A to see how to set up the 3497A mainframe timer DVM and the plug in assemblies The final step is to connect the 3497A to your system To do this first determine what function you want the 3497A to perform DC voltage measurements resistance measurements etc See Cha...
Страница 17: ...nds you can go directly to Chapter 5 Controlling the 3497A to see how to set up the 3497A mainframe timer DVM if your 3497A has Option 001 and the plug in assemblies Options 0 10 to 140 you ordered The next step is to connect the 3497A to your system To do this first determine what function you want the 3497A to perform DC voltage measurements resistance measurements etc Then see Chapter 9 Example...
Страница 18: ...ations In this chapter we ll introduce the 3497A and show how it can be used in data ac quisition control system applications To better understand the capabilities of the 3497A we ll first present a brief overview of data acquisition and control systems as used in this manual A data acquisition and control system which uses the 3497A for measurement and control is shown in Figure 1 There are t w o...
Страница 19: ...ds issued from the controller For the 3497A the control task is divided into three categories interrupts switching and control sources When the 3497A is set for interrupt the controller can do other functions and be interrupted by predetermined system status conditions Switching multiplexing refers to the capability of the 3497A to switch inputslout puts from one channel to another Control sources...
Страница 20: ...re divided into five categories depending on the user system parameter t o be determined voltage temperature resistance frequency or pressure With the 3497A you can measure or determine DC voltage temperature resistance frequency or pressure or totalize events from a wide variety of user systems Control Control functions for the 3497A are divided into three categories interrupts switch ing and con...
Страница 21: ...istance communication between your controller and the 3497A you can use the 3497A with RS 232 interface and compatible MODEMS for communication over telephone lines Data Processing When an hp 85A or equivalent controller is used with the 3497A you can pro vide CRT display data storage or make plots graphs or strip charts of data measured by the 3497A Since the 3497A is fully programmable data acqu...
Страница 22: ... Measure DC voltages from IpV to l2OV with IsV sensitwily Capabiliw for both guarded 13 wire and sw ended voltage msawremem Measure inpvts at up to 3OOlsecond and score up to 60 readings ASCII or 100 readingsIRck ed BCDI Transfer data wed in the 3497A lo eonmllers or printms in one of Ulree formaw ASCII Packed BCD O r Time of day ASCII Amlog Channel Number Measure low level ovl utr from thermocauo...
Страница 23: ...igure 4 shows the rear panel features Although the DVM clock timer and alarm are shown as front panel features in Figure 3 they are physically located inside the 3497A mainframe Keyboard A standard 3497A front panel consists of an alphanumeric keyboard and a display The keyboard is used to enter command sequences into the 3497A to control its operation An optional blank front panel Option 260 has ...
Страница 24: ...97A since pressing the blue SHIFT key shifts the alphanumeric keys to the shifted Alpha mode See Chapter 2 Front Panel Operation for details ENTERING A COMMAND SHIFTED MODE CLOSE Press Data Shift Enter Entered to A C 1 0 AC1O Alpha into Mode 3497A Display The front panel display can be divided into three functional groups lnterface Bus Status Displays SlotIChannel Displays and Function Displays Th...
Страница 25: ...ow the value of the current output TimerIReal Time Clock The 3497A includes a real time clock to provide a time base for measurement systems such as data logging for example The timerlclock has 5 different modes of operation and has 24 hour battery back up for all modes except Timer Output You can use the clock to provide real time printout of time of measurements In ad dition you can use the time...
Страница 26: ...nsitivity The DVM includes a programmable three level 10 pA 100 pA or 1 mA current source I Alarm If programmed an audible alarm can be sound ed for system alarm conditions Alarm BEEP also sounds for illegal command entries Clock A standard real time clock provides a time base for your measurements Month Day Hour Minutes Seconds or Day Month Hours Minutes Seconds formats are available Figure 3 349...
Страница 27: ...rement The CHANNEL CLOSED port outputs a TTL pulse when an analog channel is closed The TIMER port outputs pulse trains with programmable Voltmeter Connections 1 Use the HI COM LO COM and GUARD COM terminals t o input voltages t o the DVM Use the HI and LO CURRENT SOURCE terminals to out put a programmable current 10 pA 100 pA or 1mA to an external circuit 3498A Extenders I Connect up to 1 3 3498A...
Страница 28: ... and option number 010 020 etc or model number 44421A 44422A etc Descriptions of the plug in assemblies plus the DVM Op tion 001 the US 232 interface Option 232 and the 3498A Extender Option 298 follow See Appendix 6 Specifications and General Information for detailed specifica tions on these options 1 OPTION 0011 Digit DVM and Current Source Description The 3497A DVM assembly is a systems quality...
Страница 29: ...ading Rates Read a maximum of 50 readingslsec in 5 digit mode or a maximum of 300 readingslsec in 3 digit mode Reading Storage Applications Store up to 100 readings in the 3497A internal buffer and transfer the stored readings to a controller in one of three formats Current Source Measure low level outputs of thermocouples strain gauges and other transducers For high level signals the DVM can meas...
Страница 30: ...ups of 1 0 channels and one channel can be closed in each decade In addition relays can be closed in a random fashion or can be incremented between programmable limits Applications Because the 20 Channel Relay Multiplexer has low thermal offset characteristics this option is ideal for precise low level measurements of transducers and temperature measuring devices Since t w o channels one per decad...
Страница 31: ...are compensation is limited to one thermocouple type per assembly Software compensation can be used with any mixture of thermocouples but requires a com puter program to convert voltages measured to the associated temperatures Applications Use the Option 0 2 0 assembly with hardware compensation to measure the output of up to 2 0 B E J K R S or T type thermocouples one type per assembly Use the Op...
Страница 32: ... a signal via the 3497A to the controller to interrupt its program and take pre programmed action Applications Use the digital input mode to sense up to 16 lines of digital data such as the out puts of limit switches and position indicators Use the interrupt mode to interrupt and take corrective action when immediate reaction to a level change is required or when the signal is transient as in a mo...
Страница 33: ...n the counter can count up or down from a programmable start point and can out put a programmable number of square wave pulses for control applications Applications Use the Option 060 assembly to measure mechanical and low frequency electronic signals Use the programmable square wave output pulse feature to control exter nal circuits Artisan Technology Group Quality Instrumentation Guaranteed 888 ...
Страница 34: ...te any mixture of h or full bridge circuits on the assembly However to compute strain this assembly must be used with a controller Applications Use the Option 0701071 assemblies to measure the outputs of strain gauges and three element rosettes Since these assemblies can be used in the same mainframe as other plug in assemblies you can mix strain measurements with other 3497A functions For example...
Страница 35: ... up to 1 Amp at 100 volts peak In the digital output mode each relay can be set open logical 0 or closed logical 1 to provide a 16 bit wide digital output Applications Since the Option 11 0 assembly can switch one amp at 100 volts it can be used to switch test fixture power or to actuate alarm bells The assembly can be used with the 16 Channel Isolated Digital Inputllnterrupt assembly Option 050 t...
Страница 36: ...mally open dry relay Each channel can be closed individually or any combination of channels can be closed simultaneously The assembly contains a readback circuit so that the status of each channel can be determined Applications Use the Option 115 Assembly to switch power line voltages to small motors alarm bells and lights motor starters and solenoids Artisan Technology Group Quality Instrumentati...
Страница 37: ... from 10 2375 volts to 10 2375 volts in increments of 2 5 millivolts Each voltage source is isolated from the other and from ground which breaks possible ground loops and permits control of devices floated up to 170 volts above ground Applications Use the Option 120 assembly to control voltage programmed devices such as power s u l i e s and VCOs Artisan Technology Group Quality Instrumentation Gu...
Страница 38: ... isolated from the other and from ground which breaks possible ground loops and permits control of devices floated up to 170 volts above ground Applications The Option 130 assembly especially when the 4 20 mA range is used can be used as a transmitter in an industrial current loop Each output will drive an industrial current loop with up to 600 ohms of total loop resistance Artisan Technology Grou...
Страница 39: ...ower supply and ground buses Two of the grids are labeled ANALOG SECTION and DIGITAL SEC TION The ANALOG SECTION grid contains two power supply buses and two ground buses The DIGITAL SECTION grid contains a power supply bus and a ground bus Applications Use Option 140 when you have a specialized measurement or control application which can t be satisfied by using manufactured plug in assemblies Ar...
Страница 40: ...racter length and two handshake protocols ENQuireIACKnowledge or DC1 Option 232 is compatible with computers that support RS232C or RS423 full duplex asynchronous operation and allow echo suppression Applications Option 232 is especially valuable when operating the 3497A in remote locations Use the RS232C version with MODEMS and telephone lines to control a 3497A from a computer hundreds of miles ...
Страница 41: ...7A and 10 in each 3498A The maximum number of analog assemblies Options 010 020 070 071 is 50 while the maximum number of digital assemblies Options 050 060 110 115 120 130 and 140 is 85 Maximum capability is 1000 analog channels with 20 analog channels assembly and 1360 digital channels with 16 digital channels assembly Applications Use the 3498A Extender to provide low cost expansion of 3497A ba...
Страница 42: ...98A slot and channel number ing system and shows how to address analog and digital assemblies DISPLAY describes the functions of the front panel display and shows some sample analog and digital displays KEYBOARD describes the keys on the front panel keyboard and shows sample keystroke sequences to enter commands TURNING THE 3497A ON Before we begin the discussion on commands and front panel operat...
Страница 43: ... key ON see Figure 5 for location and care fully observe the 6 digit display on the front panel as it cycles through sequences a through el as shown in Figure 5 Since the display cycles very quickly you may want to press the LlNE key ON and OFF a few times to better observe the sequence You should also hear an audible BEEP when you first press the LlNE switch ON If POWER ON SRQ has been set the SR...
Страница 44: ...497A with a DVM I12702 The blinking light shows internal triggering of the DVM and the shows completed measurement This is the final step of the power on sequence for a 3497A without Blinking Light LThe six digit display shows the background DC voltage measured by the DVM and changes continuously as the DVM is triggered The DCV light shows a DC Voltage measurement the optional DVM Option 001 Figur...
Страница 45: ...ering of the DVM This com pletes the self test procedure Now turn the 3497A off by pressing the LINE switch OFF while we discuss the commands for the 3497A DISPLAY AFTER SELF TEST KEY PRESSED Figure 6 Self Test Display COMMANDS SELF TEST KEY Recall from Chapter 1 that the 3497A can be controlled by entering commands from the front panel keyboard or by sending commands from a controller via a commu...
Страница 46: ...com mand group the second letter identifies the subgroup in the group and the data characters are parameters which act as qualifiers Command r o u Command Subgroup Data Characters Parameters The data characters n l n2 etc can refer to addresses values or conditions They specify addresses for slot and channel numbers in plug in assemblies values for voltage or current level output or conditions suc...
Страница 47: ...t you can become familiar with the command format and functions You may want to take a few minutes to examine the table before proceeding to the next section on addressing The format of each command remains the same whether you are entering the com mand from the front panel or from a controller For example we saw that AClO was the command to close analog channel 1 0 from the front panel To enter t...
Страница 48: ...8 IDAC ANALOG OUTPUT Sets the output voltage level for the VDAC and output current level for the IDAC VDAC output is 10 2375V to 10 2375V in 2 5 mV increments IDAC output is 0 2 0 mA 5wA increments or 4 2 0 m A 4 increments AR I ANALOG RESET I I Opens analog assembly channels in 3497A and 3498A and sets VF1 VT1 VR5 VWO VSO AEO AFO and AL999 AS I ANALOG STEP Performs software channel advance from t...
Страница 49: ...mand MUST be set before CF command is executed For n 3 to 6 CT slot 1 and 2 set period measurements and CT slot 3 and 4 set pulse width measurements COUNTER READ Allows the results of counter measurements to be read in one of three ways COUNTER SET Sets the start point 0to 999999 for the Count Up or Count Down functions Also sets number of pulses in Pulse Output mode start point value twice the nu...
Страница 50: ...9 channels specified For Option 115 assembly opens relays in chan chan 0 to 15 nels specified Relays in channels not specified remain in previous state I DR slot I DIGITAL READ 1 DS slot I DIGITAL INTERRUPT SENSE slot 0 to 8 9 Sets edge transition sense which will cause channel 0 7 bits to slot 0 to 4 be set in an Option 0 5 0 assembly Polarity sense set by octal value Polarity sense 1 chan bit se...
Страница 51: ...be SLO Keyboard Enabled entered from the front panel With SLI 3497A can t be returned SL1 Keyboard to local mode unless SLO is sent or power is turned off Disabled 1 I SI SYSTEM OUTPUT WAIT When SO1 in effect t w o modes to return data t o controller With VSO 3497A takes measurement and waits for controller request to transfer data With VS1 or VS2 3497A takes n readings as set by VNn and waits for...
Страница 52: ...OL Use TEn to monitor elapsed time from start of an operation Use TEO RESET the TE command without a number to read time elapsed since TEI HALT TE2 command received TE2 START TD TIME OF DAY READ control started by TE2 command Data returned has format DDDDDD sec Reads time of day from real time clock Data returned has format MM DD HH MM SS or European DD MM HH MM SS TE ELAPSED TIME READ 1 Ton 1 TIM...
Страница 53: ...over the bus when voltmeter storage is off VSO VOLTMETER NUMBER READINGSITRIGGER Sets number of readings taken per trigger pulse input Readings are taken sequentially and output over the bus in format set by VFn VOLTMETER RANGE Sets range of DVM Maximumoverrange capability for each range is 120 of full scale In autorange DVM upranges at 120 of full scale and downranges at 11 of full scale VOLTMETE...
Страница 54: ...lexers 010 020 AX chan chan Strain Gauge 070 071 AX chan chan Digital Assemblies Digital Input 050 DX slot chan chan Actuators 110 115 DX slot chan chan Counter 0 6 0 CX slot function DIA Converters 120 130 A 0 slot chan value Breadboard 140 SX slot register value Analog Assembly Addressing Analog assemblies are addressed by channel number with channel numbers from 0 999 Recall that the 3497A has ...
Страница 55: ...ALOG CHANNELS I To close a channel of an analog assembly in slot 2 the command is AC40 through AC59 depending on the channel to be closed in the assembly To close a channel of the same assembly placed in slot 4 the command is AC80 through AC99 Note that the slot number is not a part of the analog assembly addressing scheme Closes channel of an Closes same channel analog assembly in of an analog as...
Страница 56: ...channels channel 0 15 a maximum of 1360 digital channels can be addressed The command group does not necessarily specify whether analog or digital assemblies are to be addressed For example the 100 kHz counter Option 060 responds to the COUNTER command group but is a digital assembly since the COUNTER command group has the form CX slot function Also the two DIA con verter assemblies Options 120 an...
Страница 57: ...s display Slot Channel display and Function display Figure 7 shows the display after a self test of the 3497A As you read the description you may want to do the self test again so that the display on your 3497A matches that in Figure 7 lnterface Bus Status Display The interface bus status indicators show the status of activity on the interface bus Figure 7 summarizes the functions of each of the f...
Страница 58: ...isplay and the typeof IS shown on the 5 LED nd cators to he right ot the display LED ON DCV SEC TOT OCT ENT CURRENT SOURCE 110 r A 1OOpA 1mA LEDsi TYPE OF DISPLAY DC voltage measured by the DVM Period or pulse width l n seconds 01an n put s gnal Totalized n m b e r of counts of InpA 1999999 counts max muml Display IS octal value of d aital data entered Valueof data entered up lo SIX d glts iron fr...
Страница 59: ...gital assemblies the CHANNEL LEDs ON show the channel bits which are true set to digital 1 1 EXAMPLE SLOTICHANNEL INDICATORS I Let s compare the SLOT and CHANNEL indicator displays for an analog assembly vs a digital assembly in slot 2 where channel 0 address 20 is closed for the analog assembly and channel 0 address 2 O is closed for a digital assembly SLOT CHANNEL CHANNEL Function Display The fu...
Страница 60: ... accept new inputs or that data g input from the front panel or from a controller et s look at a couple 6f examples to show typical analog and digital displays In we ll show some sample command sequences to produce the displays EXAMPLE ANALOG DISPLAY ssume that an analog assembly such as the 20 Channel Relay Multiplex assembly Option 010 is placed in slot 2 of a 3497A and the DVM easures a voltage...
Страница 61: ...T assembly Slot 1 3 addressed I CHANNEL I channels 0 2 and 4 bits true 25 is Octal value OCT of 00 010 101 bits 0 2 and 4 true Conversion As shown for digital displays the 6 digit display gives the octal value of the digital data In the example above bits 0 2 and 4 are high or true and the equivalent octal value is 000025 To clarify this let s look at binary to octal conversion For the 3497A digit...
Страница 62: ...MBER EXAMPLE BINARY TO OCTAL CONVERSION Value 2 For example for an 8 bit byte with bits 1 3 5 and 7 true digital I the digital representation is 10 1 0 1 010 Since bit 7 is 1 its value is 2 However since bit 6 is 0 its value is 0 The combined value of bits 6 and 7 is thus 2 0 2 and the MSD of the octal number is 2 Similarly the second digit of the octal number is 5 the LSD is 2 and the octal repre...
Страница 63: ...Figure 8 Each of these keys has a function description CLOSE CHANNEL TRIGGER etc above it a number or punctuation mark 0 through 9 plus and 1 in the center and an alpha character A C D etc at the lower right hand corner In addition alpha L is at the lower right hand corner of the self test key Alpha numeric keys have three modes for entering data a primary mode for com mand function a numeric mode...
Страница 64: ... outputs Ded catesdisplay to designated analog channel Ded cates display to selected slot Steps increments or decrements the 3497A to the next analog SPECIAL PURPOSE JFP rnpse 5 l o sn fr rnr e ooaro lo A pna mooe sr Itc at tnc 3497A c r a r enrr c i c e c l c olnmmrus enterca ano Fer rne 3497A c o ro a spcc f c o r n Q CONTROL These keys control the mode of operatlon of the 3497A and allow manual...
Страница 65: ... ANALOG CLOSE CHANNEL key1 To Enter AC3 Press Keystroke Sequence LOSE CHANNEL Data Entered AC 3 AC3 Command Into 3497A Pressing the ANALOG CLOSE CHANNEL key enters AC Since the t w o alpha characters in the command AC were entered with the ANALOG CLOSE CHANNEL key the 3497A interprets the next entry as a data character number Pressing the CURRENT SOURCE key enters the number 3 As with all commands...
Страница 66: ...red Mode A C 3 into 3497A Special Purpose Keys Now let s examine each of the five keyboard groups and define the function of each of the keys beginning with the special purpose key group As mentioned we ve divided the keyboard into five functional groups Some typical keystroke sequences are shown to illustrate the function of the keys In these examples only the primary mode is shown However many o...
Страница 67: ...TRY key will require that you enter DC3 rather than 3 only Use the EXECUTE key to actually enter the command sequences into the 3497A The EXECUTE key also acts as a delimiter for the keyboard to end the numeric por tion of the previous command and prepare the keyboard for a new command TIMER DAY Use the TIMER DAY key to enter a desired time of day into the real time clock in one of two formats Mon...
Страница 68: ... has been entered into the 3497A to show the time of day on the display enter the following sequence 3 To read the time of day press Keystrokes Data Shifts T Entered to Alpha Entries D Executes TD command to display The display shows some time after 18 24 53 depending on the time that you entered the last keystroke sequence Notice that the display acts as a digital clock updating each second Artis...
Страница 69: ...e 3497A was previously in remote mode the REMOTE display light goes OFF SRQ SRQ stands for Service Request The purpose of the SRQ key is to send a service request to the controller from the front panel Service requests are discussed in Chapters 3 and 4 However to see how the front panel SRQ key works let s per form the example keystroke sequence shown to enable and send the SRQ message 1EXAMPLE SE...
Страница 70: ... and observe that the display goes through the same sequence as when the LINE key is pressed ON except that HP 3497 is not displayed and the audible alarm BEEP is not sounded Analog Keys This key group consists of the ANALOG STEP key and four alpha numeric keys CLOSE CHANNEL FIRST CHANNEL LAST CHANNEL and VIEWED CHANNEL This group controls the operation of the analog plug in assemblies Options 010...
Страница 71: ...ely set the limits of the sequence When the 3497A is reset or at power on the first analog channel is set to 000 and the last analog channel is set t o 999 The ANALOG STEP key closes channels in increasing or decreasing sequence depending on the first and last channels set If the first channel is less than the last channel AF AL the sequence is increasing If the first channel is greater than the l...
Страница 72: ...ta a Entered Sets First Channel to 20 Sets Last Channel to 30 Now press the ANALOG STEP key to close channel 20 and note that 020 is displayed on the 3 digit display Press the ANALOG STEP key again and note that the display is 021 showing that channel 2 0 has been opened and channel 21 closed Repeatedly press the ANALOG STEP key until the display reaches 030 Then with the next press of the key not...
Страница 73: ...om this mode press the ANALOG VIEWED key and then the EXECUTE key To set channel 20 as the dedicated channel press VEWED Keystroke Sequence Data Entered Digital Keys Dedicates channel 20 to Viewed mode This group of keys controls the operation of some of the digital assemblies Options 050 110 and 115 This group consists of the DIGITAL CLOSE DIGITAL OPEN READ SLOT and VIEWED SLOT keys Addresses for...
Страница 74: ... an example to see how digital channels of an actuator assembly in slot 3 can be closed and read We ll reset the 3497A close channels 2 and 4 and read the slot This example is for an actuator assembly in slot 3 If an actuator assembly in not in slot 3 when keystrokes shown are entered the 3497A will BEEP to show invalid entries To close more than one channel in a slot the command is DC slot chan N...
Страница 75: ...ssemblies DIGITAL VIEWED SLOT causes the VIEWED light on the display to turn on The command is DV slot To clear the 3497A from this mode use DV without a slot I EXAMPLE DEDICATE DISPLAY TO SLOT I To dedicate the display to slot 3 press Keystroke Sequence Data Entered DV 3 Dedicates Front Panel Display to Slot 3 After the EXECUTE key is pressed the display is as shown Whenever channels are closed i...
Страница 76: ...ADITRIGGER key to set the voltmeter to take from 1 999 readingsitrigger WWIJT 3cs t CURRENT SOURCE Use the CURRENT SOURCE key to set the current source in the voltmeter to one of three constant current outputs 1 0 PA 100 PA or 1 mA The command for this is VCn n 0 to 3 When this command is executed one of the Current Source Display Indicators is turned ON I EXAMPLE SET CURRENT SOURCE TO 1 A I The c...
Страница 77: ...implementation of IEEE Standard 488 1978 Standard Digital lnterface for Programmable Instrumentation Since HP IB is a standard interface the 3497A can be used with a wide variety of controllers computers However unless indicated all sample programs used in this manual are written in an enhanced BASIC Beginners All Purpose Symbolic Instruction Code language used by the hp 85 Desktop Computer and si...
Страница 78: ...us message specifies the type of bus message CLEAR DATA etc see Appendix A for definitions Each HP IB compatible controller has an equivalent syntax which is controller dependent for the operation portion of bus messages For example the syntax for the hp 85A is OUTPUT for sending instruc tions and ENTER for returning data ADDRESS I INFORMATION Each instrument connected to the HP IB bus has a uniqu...
Страница 79: ...P IB messages for the 3497A using typical hp controllers are shown below TYPICAL HP IB BUS MESSAGES MESSAGE TYPE OPERATION ADDRESS INFORMATION Send instructions to the 3497A OUTPUT 709 DC1 w rt 709 DCI Require numeric data return from the 3497A ENTER 709 A red 709 A Transfer control from the 3497A t o Note OUTPUT ENTER and REMOTE syntax is for hp 85A 9826A 9836A etc controllers wrt red rem syntax ...
Страница 80: ...3497A it consists of 3497A commands OUTPUT 709 VNIOACIO hp 85A HP IB 2 L 3497A 3497A Syntax Interface Device Command for DATA Select Select Code Code Preset 7 Preset 09 Syntax and Programming Hints As shown in the sample bus message above you can send more than one command in a message In general you can send as many commands as required in a single message Some other considerations in designing b...
Страница 81: ... the HP IB is cleared as soon as the last command is entered into the 3497A even though the command is still being executed by the 3497A 7 Since up to 1 4 devices can be controlled simultaneously on an HP I6 network it is essential that each device have a unique address If you have more than one 3497A on the HP IB interface only one of the instruments should have address 0 9 and each of the other ...
Страница 82: ...into the 85A and press the END LINE key When this command is executed the front panel 6 digit display is turned off The REMOTE indicator LED shows that the OUTPUT operation transferred control to the controller and the LISTEN indicator shows that the 3497A is ready to accept further inputs from the controller Thus the OUTPUT operation of the bus message transferred control to the controller the 70...
Страница 83: ...MENT DATA In this example we ll use the A l l 0 Analog Input command to close analog channel 1 0 and trigger the DVM to take a measurement of the voltage on channel 10 Then we ll transfer the voltage measurment to the controller called a READ operation A program to do this is shown You may want to enter and run this program and observe the front panel display as the program is executed Program Lin...
Страница 84: ...ers control from the 3497A to the controller Note that these commands except for OUTPUT do not cause the 3497A to change state or to send data to the controller IEXAMPLE TRANSFER CONTROL USING LOCAL AND REMOTE MESSAGES1 When the REMOTE 709 command is sent all the front panel keys of the 3497A except for the SRQ LOCAL ANALOG VIEWED CHANNEL and DIGITAL VIEWED SLOT are disabled and commands can t be ...
Страница 85: ... DD CRLF Elapsed Time DDDDDDDDDD CRLF First 4 Digits are Zeroes Digital Read or 000000 CRLF 0 177777 Octal Digital Load 1 Digital Interrupt 000000 CRLF Last 3 digits are 0 377 Octal Counter Totalize DDDDDD CRLF Counter Period D DDDDDD E D CRLF Seconds or Pulse Width Analog Channel DDD CRLF No Chan Closed System Read 000000 CRLF last 3 digits are 0 377 Octal Packed BCD Format Packed BCD Format is u...
Страница 86: ... 1 1 0 2 and 11 3 4th Digit LSD D Bit 7 0 0 For example suppose the five digits to be transferred are all 1s disregard the sign and overrange bits for this example and the 10V range is specified The data return ed is I 1 1 11 Ed where d 2 since bit 7 1 and bit 6 0 for the 10V range Thus the reading is 11111 x lo2 11 111V BCD value 8 4 2 1 8 4 2 1 D 1 1 Bit 5 of the first byte is the sign of the me...
Страница 87: ...OV range and a voltage of 8 3456V is measured When the voltmeter is set for format VF2 see the Command Directory the three data bytes output from the 3497A are as shown The data returned for this measurement is 083456 x 102 8 3456V The multiplier is derived from the range bits bit 7 1 and bit 6 0 for a decimal value of 2 10V Range Not Overrange I st Byte t MSD Decimal L Multiplier is lo2 since lo2...
Страница 88: ...ommand A sample program to do this is shown Note that you must use I 1 to 2 to get the time of day reading followed by the voltage reading and the channel number 10 CLEAR 709 2 0 DIM A 201 30 OUTPUT 709 VF3AI10 4 0 FOR I 1 TO 2 5 0 ENTER 709 AS 6 0 PRINT AS 70 NEXT l 80 END After the program is executed a typical printout is The first line gives the month day and time of day The second line gives ...
Страница 89: ... setting the TALK ONLY switch in the 1 position In TALK ONLY mode commands cannot be entered from the controller and must be entered from the front panel lnterface Bus Status Displays In Chapter 2 see Figure 71 we outlined the functions of the four lnterface Bus Status Displays SRQ TALK LISTEN and REMOTE Since the rest of this section describes the 3497A response to bus messages you may want to en...
Страница 90: ...12 HP IB bus messages apply to the 3497A This table summarizes these messages and shows the hp 85A syntax for the bus message The examples shown in the descriptions following the table apply to the hp 85 9836 9845 and similar computers For other controllers refer to the 1 1 0 programming manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 91: ...ard except for Power ONIOFF Clears the LOCAL LOCKOUT and REMOTE modes and returns the 3497A to front panel control Switches control of the 3497A from the front panel to the controller All front panel keys except LOCAL SRQ ANALOG VIEWED CHANNEL and DIGITAL VIEWED SLOT are disabled If programmed to do so the 3497A sends a REQUIRE SERVICE SRQ message when it requires action by the controller If the c...
Страница 92: ...t after a CLEAR message The CLEAR message initiates the same action pressing the front panel RESET key The 3497A state after the CLEAR message is executed is 3497A CONDITIONS AFTER CLEAR OR RESET ACTIONS CLEAR OR RESET ACTIONS 1 Stops all task execution 2 Clears all 3497A buffers and any other results 3 Stops all data transmission from the 3497A 4 Opens all analog and digital assembly channels 5 C...
Страница 93: ... OUTPUT 709 AC40VN10 the action is to first close analog channel 40 then set the voltmeter to take 10 readingsltrigger For the message OUTPUT 709 VN 1OAC4OU the action is reversed LOCAL EXAMPLES 100 LOCAL 7 120 LOCAL 709 COMMENTS The LOCAL 709 message clears the 3497A from the REMOTE operation mode con troller operation and restores control to the front panel Unless LOCAL LOCKOUT was previously es...
Страница 94: ...he same as a LOCAL message i e LOCAL 7 If LOCAL LOCKOUT is set the message LOCAL 709 returns front panel control to the 3497A but the next REMOTE message or OUTPUT 709 will return operation to the LOCAL LOCKOUT mode CLEAR LOCKOUT AND SET LOCAL EXAMPLES 110 LOCAL 7 240 LOCAL 709 COMMENTS The CLEAR LOCKOUT AND SET L AL message clears the 34 REMOTE mode and clears the LOCAL LOCKOUT message REMOTE EXA...
Страница 95: ...hese conditions occur and then take necessary action Of course the controller must also be programmed to respond to the interrupt For the 3497A the interrupt message is a REQUIRE SERVICE SRQ message Since SRQ is sent from the 3497A over the SRQ line of the HP IB SRQ activity is totally independent of other HP IB activity An SRQ message is sent from the 3497A whenever certain system conditions oc c...
Страница 96: ...RQ Bit 4 Msg Not Exec Power On SRQ Message Not Executed Bit 3 Time lnterv Time Interval Time Alarm Bit 2 Time Alarm Digital Interrupt Data Ready SRQ Bit 1 Dig lntr Condition Which Sets The Bit t o 1 true Pressing the front panel SRQ key Bit 6 is 1 when SRQ Mask true bit s match Status Register true bit s 1 At 3497A Power On IF the POWER ON SRQ ENABLE switch is set t o 1 position Set by one of six ...
Страница 97: ...the SE command to set each of the bits true i e send SE2 to set the SRQ Mask for Digital Interrupt bit 1 true Any combination of bits 0 through 4 and or bit 7 can be set by an appropriate SEn command For example t o set bits 4 and 0 true the command is SE21 SE20 SE1 SRQ MASK BIT DEFINITIONS AND BIT SET COMMANDS Bit 7 SE200 L POWER ON SRQ ENABLE SWITCH IN THE 1 POSITION SETS BIT 5 TRUE Bit 5 Pon SR...
Страница 98: ...by sending OUTPUT 709 SE200 Then when the front panel SRQ key is pressed an SRQ is generated and the SRQ LED on the display turns ON indicating that the SRQ has been sent To generate an SRQ for Data Ready conditions set bit 0 of the SRQ Mask by sending OUTPUT 709 SE1 When a DATA READY condition occurs see STATUS BYTE bit 0 of the Status Register is set and the combina tion of SRQ Mask bit 0 true a...
Страница 99: ... the status register The sequence of actions is shown below assuming that the controller has been programmed to respond to SRQ SERIAL POLL SEQUENCE STEP CONTROLLER MESSAGE 3497A Many controllers display the condition of the STATUS BYTE as the decimal sum of the individual true bits For example if bits 0 and 7 of the Status Register are true the decimal value of the status byte is 129 128 1 This ch...
Страница 100: ...ES Bit 5 Man SRQ 128 100 TRIGGER 7 290 TRIGGER 709 SRQ 64 P On SRQ 32 COMMENTS Bit 4 If the 3497A has been addressed to listen the TRIGGER message also known as GET for Group Execute Trigger causes the 3497A to increment to the next analog channel and take a single voltage measurement with the DVM if installed If a reading is in progress execution of the TRIGGER message is delayed until the cur re...
Страница 101: ...s limits of of the 3497A 5 The internal 3497A buffer storage is full 6 A digital assembly is not present in the slot addressed YES N0 YES N0 N0 N0 Time Interval When time interval set by Tln command is reached When time of day set by TAn command is reached Set by signal from digital input interrupt or counter assembly when pre set condi tions occur 1 When voltmeter storage is OFF bit is set after ...
Страница 102: ...ectly con nected to a controller via RS 232C or RS 4491423 or 2 connected to an asyn chronous full duplex MODEM via RS 232C or RS 4491423 for remote site opera tion using dedicated telephone lines With RS 232 operation the 3497A can be located a maximum of 50 feet 15 24 meters from the controller With RS 4491423 operation the maximum separation depends on the speed of operation For example for dat...
Страница 103: ...er and the 3497A is a two way street However for simplicity we ll break the discussion into three parts 1 send ing commands to the 3497A 2 receiving data from the 3497A and 3 handshake techniques To begin however let s take a look at the format and syntax rules of messages used to send information across the interface Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www ar...
Страница 104: ...ne or more numerics i e AC10 ST1 etc To send these commands from your controller to the 3497A it is necessary to add the controller transmit protocol and the interface select code ISC We ll call the combination a message Thus a message consists of three parts protocol ISC and command s For BASIC language controllers such as the hp 85A the protocol to send a com mand from the controller to the 3497...
Страница 105: ...re required in a command but are not specified a 0 is assumed except for the AC AV DV SR TD and TE commands For example if the command DC2 3 close digital channel 3 in slot 2 is intended but DC2 is sent the action is DC2 O close digital channel 0 in slot 2 4 If more than one number is used in a command comma s must be used between numbers i e AC3 13 DON T use commas anywhere else in the commands s...
Страница 106: ...ution starts after the buffer is full even if CR is not sent This means that the 43rd and all following command characters will be ignored by the 3497A Also command strings exceeding 42 characters will cause the input buf fer overflow bit to be set in the 3497A status register see BREAKS SERVICE RE QUESTS and INTERRUPTS Also if the 3497A is busy executing a command when another is received the new...
Страница 107: ...hich exceed 42 characters 1 5 To avoid a system overrun commands being ignored a slow the speed of operation to give the 3497A time to execute commands before sending another command b Use WAIT statements in programs to give the 3497A time to execute commands before sending another c If the speed of operation can t be slowed down use a handshake techni que The 3497A is compatible with either DC1 o...
Страница 108: ...R 0 177777 Octal Digital Load Digital Interrupt 000000 CR Last 3 digits are 0 377 Octal Counter Totalize DDDDDD CR Counter Period D DDDDDD E D CR Seconds or Pulse Width Analog Channel DDD CR No Chan Closed System Read 0 0 0 0 0 0 CR last 3 digits are 0 377 Octal Packed BCD Format Packed BCD is used to increase transfer reading speed from the 3497A to the con troller In packed BCD data is transmitt...
Страница 109: ...A is compatible with t w o types of hand shakes EnquireIAcknowledge ENQIACK and DC1 In addition to avoid computer overflow the 3497A can operate in single or continuous output mode Finally you can use LocalIRemote operation to control the 3497A from the front panel or from your controller EnquirelAcknowledge ENQIACK The purpose of the ENQuireIACKnowledge handshake is t o ensure that the controller...
Страница 110: ...s 11 15 1 6 and 19 to implement the ENQIACK handshake The hp 85A is defined as the host and an interface select code ISC of 1 0 is used EXAMPLE ENQIACK HANDSHAKE TECHNIQUE Program Lines 10 RESET 10 10 20 CONTROL 10 11 128 20 30 CONTROL 10 15 6 30 40 CONTROL 10 16 66 40 50 CONTROL 10 18 5 50 60 60 70 DC1 Handshake Description Sets Interface to Power On Allow XMlT FLAG Enable ACK enables XMlT FLAG 2...
Страница 111: ...ll be returned as soon as the 3497A has processed it 5 Do NOT use external trigger VT2 mode when in the DC1 mode With external trigger the 3497A will continuously take readings and try to output them to the con troller However the DC1 mode requires that the 3497A wait for a DC1 command before outputting data Thus the 3497A is dependent on two conflicting mode re quirements and data errors could re...
Страница 112: ...ol If the Son command is NOT sent when the 3497A goes to local operation it reverts back to continuous output mode SOO On the other hand if the SO1 command IS sent while the 3497A is in remote mode when the 3497A goes to local operation it stays in single output SOO mode BREAKS SERVICE REQUESTS AND INTERRUPTS In most cases once communication is established between the 3497A and the con troller ope...
Страница 113: ...imilar to the BREAK message except that SC does not clear the command input buffer or return the 3497A to local mode You can use the SC command if your controller cannot generate a BREAK message Since SC clears the status register data transmission errors buffer overflow and system overrun information are lost when the SC command is executed Also SC clears all system errors Therefore if an I10 err...
Страница 114: ... has been programmed to respond to the SRQ it takes action as previously programmed However if the 3497A is executing a data request command the BREAK message will not be sent until after the data has been sent An SRQ is generated in response to one or more system interrupt conditions For example it may be required to send an SRQ message when an I10 error occurs for a time alarm for message not ex...
Страница 115: ...t if a command string exceeds 42 characters If a buffer overflow occurs bit 4 message not executed is also set 7 Manual Service Request Set when the front panel SRQ key is pressed Man SRQ Pon SRQ Service Request This bit is set when bit s 0 5 and or bit 7 in the status register is set AND the corresponding bitM in the interrupt mask is set CTS Clear To Send Time lntrv SRQ Msg Not Exec IFor example...
Страница 116: ...nditions occur This is the purpose of the interrupt mask The status register is updated as events occur and thus is constantly changing status However to allow ONLY those conditions desired to send a break message to the controller it is necessary to program the interrupt mask To set the interrupt mask for the conditions you want to cause interrupt send an SEn command where n is an octal number co...
Страница 117: ...programmed when the 3497A is configured for 7 bit ASCII 7 Command input buffer overflow 8 System overrun Time Interval If bit 3 and bit 6 are set a BREAK is sent when a specified time interval set by the Tln command has elapsed Time Alarm If bit 2 and bit 6 are set a BREAK is sent when a time alarm time of day match occurs Pon SRQ Digital Interrupt If bit 1 and bit 6 are set a BREAK is sent when a...
Страница 118: ...r to Send and Data Set Ready Data Mode when a call is received from the distant MODEM When the receiv ing MODEM detects the carrier from the remote MODEM it turns on Data Carrier Detect Receiver Ready The 3497A will wait for up to 20 seconds for its MODEM to assert Data Carrier Detect Receiver Ready Clear to Send and Data Set Ready Data Mode after which the 3497A starts a MODEM disconnect sequence...
Страница 119: ...rogram Line Description 10 RESET 10 10 Clears Serial Interface 20 OUTPUT 10 TD1015182453 20 Sets time to Oct 15 30 OUTPUT 10 TD 6 24 53 PM 40 ENTER USING K A 30 Reads time of day 50 PRINT A 40 Stores time of day in 60 END variable A 50 Prints time of day I EXAMPLE SETTING AND DETERMINING INTERRUPTS I For this example assume that the 3497A is directly connected to the con troller and we want a BREA...
Страница 120: ...INT A STATUS 10 l B RETURN 1020 1030 Reads status register Puts octal value of true bits in status register in variable A Prints octal value Clears the 85A StatusKon trol register so it can accept next BREAK Returns program control to where program was interrupted 3 Determining the Cause of the lnterrupt assume that the octal value returned after reading the status register is 00104 leading zero f...
Страница 121: ...lose analog channels in sequence from channel 2 0 through channel 39 To sequentially close analog channels enter and run the following pro gram As you run the program watch the front panel and note that the 3 digit display goes from 20 21 3 9 as the program closes channels 2 0 through 3 9 in sequence A typical printout for this program follow the program listing Program Line Description 10 RESET 1...
Страница 122: ...ws how to use the six ports on the rear panel of the 3497A PLUG IN ASSEMBLY CONTROL shows how to control operation of plug in assemblies Options 0 10 through 140 In general for any data acquisition control system application you will need to setup program the 3497A mainframe timer and plug in assemblies for the operation re quired In addition if you are using external instrumentation to interface ...
Страница 123: ... use this chapter first decide what function you want the 3497A to perform and then refer to the command and page number listed in the table For example if you have an HP IB interface and want to enable the 3497A for a Service Request see the SE command etc Since some commands have the same mnemonics but different interpretations for HP IB and Serial Data commands are shown for both interfaces If ...
Страница 124: ...om the front panel Serial Data ONLY Set the 3497A so that measurements are not output to the controller until the controller requests them HP IB ONLY System Output Wait HP IBI System Single1 Continuous Output Serial Datal Set the 3497A to send one readingtcommand for commands which normally produce contin uous output Serial Data ONLY System Read Status Register Read Serial Datal Determine the type...
Страница 125: ...s NOT power on state The SC command is used with Serial Data RS232CIRS423 operation to reset the 3497A to specified conditions The command does not set the 3497A to a power on condition System Clear is similar to the BREAK message except that SC does not return the 3497A to local operation clear the command input buffer or voltmeter storage buffer or reset VF2 or VF3 voltmeter settings You can use...
Страница 126: ...t when the SC command is executed Also SC clears all system errors Therefore if an I10 error occurs prior t o execution of an SC command it may not be reported You can avoid this by sending the SC com mand separately not in a command string If SC is entered from the front panel the effect is the same as pressing the RESET key EXAMPLE SYSTEM CLEAR 1 0 OUTPUT 10 SC Sends System Clear to the 3497A Op...
Страница 127: ...own in the SYSTEM VIEW command explanation you can display data sent from the controller on the front panel of the 3497A by using an SV command For example if you are measuring voltage on a channel and want to continuously monitor the voltage you can send the data input to the 3497A for front panel display by using an SV command However to do this you must first turn off the front panel display wi...
Страница 128: ...Mask see REQUIRE SERVICE SRQ so we ll just review this material here See Chapter 3 for further information What s the Status Register The 3497A has an 8 bit status register which constantly monitors several possible interrupt SRQ conditions Whenever a defined interrupt condition occurs a cor responding bit in the status register is set true a 1 condition The following chart defines conditions whic...
Страница 129: ...ng complete single trigger 2 n voltmeter readings complete when VNn and VS1 or VS2 commands used or 3 DR DL Dl CR or TD commands have been executed How Set the SRQ Mask The SRQ mask allows the 3 4 9 7 A t o send SRQ ONLY for interrupt conditions specified Whenever an interrupt condition occurs the status register bit s are set as shown in the previous table However t o send an SRQ t o the controll...
Страница 130: ...t conditions set the corresponding status register bits true A SE20 SElO SE4 SE2 SE1 Bit 4 Msg Not Exec To send SRQ when the 3497A is turned on set bit 5 of the SRQ mask by placing the POWER ON SRQ ENABLE switch in the 3497A to the 1 posi tion Then at power on bit 5 of the status register is set and SRQ is generated If the POWER ON SRQ ENABLE switch is in the 0 position status register bit 5 is no...
Страница 131: ... 3 0 Instructs controller to go to line 1000 50 Main Program when SRQ occurs on interface 7 980 GOT0 50 40 ENABLE INTR 7 8 actually enables the 990 END hp 85 interface to respond to the 1000 P SPOLL 709 SRQ octal code 8 in 85 control 1010 STATUS 7 l A register 1020 ENTER 709 B 1030 DlSP B 1040 RETURN 50 990 Main body of program 1000 Start of interrupt subroutine SPOLL returns the 3497A status byte...
Страница 132: ... SEn command 2 To read the contents of the status register send a serial poll SPOLL command The value returned is the DECIMAL equivalent of the true bits in the status register 3 Setting the SRQ mask also sets registers in the interface which must be cleared after each SRQ in order to re enable SRQ interrupt as shown in line 1010 of the example program above 4 Power On State SE000 SRQ disabled Art...
Страница 133: ...ribed the status register and interrupt mask so we ll just review them here See Chapter 4 for further information What s the Status Register The status register in the 3497A Option 232 is a 16 bit register which is constantly updated as events occur The following table defines the conditions for which each bit is set to a true 1 condition i e bit 2 is set true when a time alarm condi tion occurs M...
Страница 134: ...bit by bit replica of bits 0 7 of the status register The format for the SEn command is FSE n O t o 377 octal l Bit 6 SRQ bit of the interrupt mask MUST be set to send the BREAK message to the controller For example suppose you want the 3497A to send a BREAK message if a parity framing or overrun error occurs Since these are I10 errors bits 0 and bit 6 must BOTH be set by sending an SE101 command ...
Страница 135: ...torage buffer is full 5 Digital assembly not present in slot addressed 6 Packed BCD format VF2 programmed when the 3497A is configured for 7 bit ASCII 7 Command input buffer overflow 8 System overrun Time Interval If bit 3 and bit 6 are set a BREAK is sent when a specified time interval set by the Tln command has elapsed Time Alarm If bit 2 and bit 6 are set a BREAK is sent when a time alarm time ...
Страница 136: ... 1 0 980 GOT0 40 990 END 40 990Main body of the program 1000 OUTPUT 10 SR 1010 ENTER USING KH A 1000 Start of interrupt subroutine The S R 1020 DISP A command reads the condition of the 1030 RETURN status register true bits 1010 Enters octal value of the true bits in the status register 1 for an I10 Error 1020 Displays octal value entered at line 1 0 10 1030 Returns program control to the line whe...
Страница 137: ...on 115 Assembly can open DIGITAL ASSEMBLY AND DVM STATES AFTER SI COMMAND Option 001 050 060 110 1I 5 120 130 14 0 Title DVM Digital Input Counter Actuator HV Actuator D A Converter D A Converter Breadboard State VAO VCO VFl VN1 VR5 VSO VT1 VWO Handshake and Interrupts disabled All counter functions disabled All relays NC connected to common All relays opened No voltage output No current output Ac...
Страница 138: ...wer off power on sequence to re enable the keyboard With SL1 all keys are disabled and the 3497A cannot be returned to local mode unless SLO is sent or the power is turned off The format for the SL command is 1 SLO kevboard enabled SLl keyboard disabledl 1 0 OUTPUT Operating Note EXAMPLE SYSTEM LOCK 10 SL1 Disables front panel keyboard 1 Power On State SLO Front Panel Keyboard enabled Artisan Tech...
Страница 139: ...oller can accept it The format for the Son command is SO0 Output reading to bus immediately after measurement SO1 Output reading to bus when requested by controller With SO1 in effect there are t w o modes of operation depending on the VNn Number ReadingsITrigger and VSn Voltmeter Storage commands Mode 1 With VSO Voltmeter Storage OFF the 3497A takes the number of readingsltrigger specified by the...
Страница 140: ...tore up to 6 0 ASCII readings command For the same external trigger the 3497A takes all 5 readings without wait between readings if VWO is assumed and waits for an ENTER statement from the controller to output the readings With VS1 in effect each external trigger received before the ENTER state ment causes n readings to be stored So if more thsn 6 0 readingsltrigger are programmed to be stored dat...
Страница 141: ...s output SO01 mode but changes to single out put Sol mode when the first command is received over the interface To revert back to the continuous mode send SOO The command format is SO0 Continuous Output to Controller SO1 Single Output Command to Controller EXAMPLE SINGLE READINGICOMMAND 10 OUTPUT 10 SO1 VTI Normally VT1 returns data to the controller continuously With SO1 in effect a single readin...
Страница 142: ...urned The Least Significant Digit LSD of this number identifies the type of assembly in the slot as shown For the breadboard card assembly Option 140 use the SR slot n n 0 to 7 command to read the contents of register n in the slot addressed The value returned after this command is a 3 digit octal number 0 to 377 which shows the condition of the bits in register n The formats for the SR command ar...
Страница 143: ... determine the type of analog actuator or con verter assembly in the slot such as looking at the slot EXAMPLES SYSTEM READ COMMANDS 10 OUTPUT 709 SR3 O Requests identity of assembly in slot 3 If for example 000363 oc tal was returned the 3 in the LSD shows that a counter is in slot 3 HP IB 20 OUTPUT 10 SR3 lH For an Option 140 card in slot 3 reads contents of register 1 Operating Note 1 Power On S...
Страница 144: ...ister which is constantly updated as events occur The following table shows the condi tions for which each bit is set true 1 1 For example bit 2 is set to 1 when a time alarm condition occurs MSD 5th digit LSD under the bits represent the digits of the octal number returned to the con troller in response to the SR command See Chapter 4 for details on the status register STATUS REGISTER BIT DEFINIT...
Страница 145: ...llowing the ENTER statement a 6 digit octal number representing the true 1 bits in the status register is input to the controller Suppose that bits 14 10 4 and 2 are true representing a theoretically disastrous situation Then the digital bit pattern is 0 100 010 000 010 010 and octal number 042022 is returned to the controller Operating Note 1 Power On State SR disabled Bit Value Octal 15 0 0 8 7 ...
Страница 146: ...F TEST COMMAND 1 Data Definition 8E8 Self Test Passes 1E l Cross Guard Fails 2E2 Voltmeter Fails 3E3 Timer Fails IEXAMPLES SELF TESTI 10 OUTPUT 709 STI Initiates 3497A Self Test If 8E8 20 ENTER 709 A is returned after ENTER command 30 DlSP A the self test passes HP IB 40 END 10 OUTPUT 10 STO Turns Self Test off Serial Data Operating Notes 1 When ST0 is sent the 3497A reverts to the state it was in...
Страница 147: ...suring thermocouple voltages and converting them to temperatures with the controller If a temperature is 23 67 deg C then outputting SV23 6700 displays this value on the 3497A front panel I EXAMPLES SYSTEM VIEW COMMAND1 1 0 OUTPUT 709 SDOSV23 6700 Turns front panel display off then displays 23 6700 HP IB 2 0 OUTPUT 10 SDOSV 23 7502 Turns front panel display off then displays 23 7502 Serial Data Op...
Страница 148: ...ration of the card System Write is used t o write data t o a specified register 0 t o 7 in the slot ad dressed for the breadboard card assembly Option 140 The format is slot 0 to 89 SW slot register data register 0 to 7 data 0 to 377 octal 1EXAMPLES SYSTEM WRITE COMMAND1 10 OUTPUT 709 SW3 1 120 Enters 1 010 000 into register 1 of card in slot 3 HP IB 20 OUTPUT 10 SW3 1 120H See HP IB example Seria...
Страница 149: ...ng chart to determine the type of function you want the 3497A to perform and then see the appropriate command for details i e to set the time of day the Time of Day Set TDI command TlMER COMMANDS TITLE Time Alarm Set FUNCTION Set the timer for a specified time of day 24 hour format If 3497A set for time alarm SRQ interrupt sent to con troller at time set Time of Day Set Time Elapsed Read Set the r...
Страница 150: ...Hours 0 to 24 TA HoursHours MinMin SecSec Min 0 to 59 Sec 0 to 59 EXAMPLES SETTING TlME ALARM 10 OUTPUT 709 SE4TA180000 SE4 enables SRQ mask Time Alarm so SRQ will be sent at 6 00 00 P M 24 hour clock HP IB 20 OUTPUT 10 SE1 O4TAl8OOOO SElO4 enables Interrupt Mask Time Alarm so BREAK will be sent to con troller at 6 00 00 P M 24 hour clock Serial Data Operating Notes 1 Timer Alarm SRQ in effect unt...
Страница 151: ...the time set by the TA com mand matches the time of day on the real time clock The format for the time of day set command is TD MonthMonth DayDay HourHour MinMin SecSec Option 2301 TD DayDay MonthMonth HourHour MinMin SecSec Option 2311 EXAMPLES SET TlME OF DAY 10 OUTPUT 709 TD0524183230 Sets the clock for May 24 6 32 30 PM Option 230 for mat HP IB 20 OUTPUT 10 TD2405183230 Sets the clock for May ...
Страница 152: ...lock is May 24 6 32 30 PM the following program displays 05 24 18 32 30 Option 230 format where 18 6 PM on the 24 hour clock After the OUTPUT 709 TD statement the front panel display shows the hours minutes and seconds portion of the time of day The front panel display acts as a digital clock updating each second Program Lines Description 10 DIM AS 141 10 Dimension A as a string 20 OUTPUT 709 TD v...
Страница 153: ... for the TEn command is I TEO RESET TEI HALT TE2 STAA 1 EXAMPLES SET ELAPSED TIMER CONTROL I 10 OUTPUT 709 TE2 Starts elapsed timer at 0 when the TE2 command is received HP IB 10 OUTPUT 10 TE 1 Halts the elapsed time count 20 ENTER USING 10 KW A process and displays the time in 30 DISP A sec since the TE2 command was 4 0 END received Serial Data Operating Note 1 Power On State TE1 Elapsed timer ha...
Страница 154: ...ds and the number of seconds elapsed is displayed on the front panel display 10 OUTPUT 709 TE2 Starts elapsed timer at 0 20 Main Program 70 OUTPUT 709 TE 8 0 ENTER 709 A 90 DlSP A 10 OUTPUT 10 TE2 Reads and displays number of seconds on the timer since the TE2 command was received HP IB See HP If3 for example Serial Data Operating Note 1 Power On State Elapsed Time Read disabled Artisan Technology...
Страница 155: ...t by sending an SElO command SRQ will be generated every 2 5 hours The format for the Tln command is I TI HoursHours MinMin SecSec 1 10 OUTPUT 709 SEI 0T1200 Every 2 minutes a pulse is output at TlMER port and SRQ is generated since SRQ Mask enabled by the SElO com mand HP IB 20 OUTPUT 10 SEI 10T1200 Every 2 minutes a pulse is output at TlMER port and BREAK is generated since in terrupt mask enabl...
Страница 156: ...u can use the Time Interval command to generate SRQ BREAK even when the Ton command is used to output pulses from the TlMER port The format for the Ton command is There are three main differences between the Ton and Tln commands pulse width period and SRQ capability as summarized Ton Tln Pulse Width Period range 1 EXAMPLES SETTING TIME OUTPUT PULSES1 16 psec SRQ capability 10 OUTPUT 709 T0100 Gene...
Страница 157: ...ATURES DISPLAY Select 3 4 or 5 digit display RANGES 4 DC voltage ranges 1OV 1 OV 10 OV and 100 OV plus autorange and 20 overrange AUTOZERO Select autozero ON for more accurate readings or turn autozero OFF for faster reading rates 1TRIGGER MODES Select internal external software or hold trigger modes I TRIGGER RATES Program the DVM to take 1 to 999 readingsttrigger Can also program the DVM to paus...
Страница 158: ...entioned DC voltages to be measured can be input either from analog assemblies or from the rear panel connectors Let s look first at the operation when voltages are input by using the analog assemblies Since each analog assembly Options 010 020 070 and 0711 contains 20 chan nels up to 100 voltages can be simultaneously input to the 3497A The voltage to be measured is selected by ANALOG commands Fo...
Страница 159: ...00 channels second is available If measurement of a single voltage is required the voltage may be input from the rear panel connectors As shown in Figure 9 the DVM uses a three wire HIGH LOW and GUARD arrangement Voltages input to the rear panel HI COM LO COM and GUARD COM terminals are sent to the analog common bus and the sequence of actions described for analog assemblies occurs However when in...
Страница 160: ...uo 6u puadap v w 1 l o vd 001 vrl 01 siua n lue suo3 alqewwe 6o d a a q i 40 auo slndino a m o s i u a n 3 a41 siuawamseaw a e l s s a l aie nme lo4 yyAa aqi q i pasn s 43ym a3 nos i u a n 3 u y nq e su eiuo3 yyAa a y l Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 161: ...eter Range 158 161 Set the number of readingdinput external trigger from 1 t o 999 Store readings in the 3497A for eventual output over the interface bus or for se Voltmeter Trigger Voltmeter Commands Power On State 166 Set the range of the voltmeter or set the DVM for autorange 169 VW The power on state for the voltmeter is shown in the following chart The power on state occurs after a power on o...
Страница 162: ...Storage Trigger Wait Between Trig VA VA1 Autozero ON VC VCO Current Source OFF VD VD5 5 Digit Display VF VF1 ASCII output format VN VN1 One ReadingITrigger VR VR5 Autorange VS VSO Internal Storage OFF VT VT1 Internal Trigger VW VWO No wait between trig Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 163: ...th auto zero ON The maximum reading speed for the 3497A is 300 channels second with auto zero OFF and 3 digits displayed As shown in the following chart maximum reading speed depends on the line frequency number of digits displayed see the VDn com mand and whether auto zero is ON or OFF Note that reading speed with auto zero OFF is twice that for auto zero ON However with auto zero ON measurement ...
Страница 164: ... 100 pA or 1 mA current out puts by using the VC command Current is output from the HI and LOW terminals on the rear panel Conventional current flow is out of the HI terminal and into the LO terminal The format for the VCn command is I vco OFF I V C 10pA I VC2 100pA I VC3 1 mAl I EXAMPLES CURRENT SOURCE OUTPUTS I 10 OUTPUT 709 VC2 Sets current source output to 100 PA HP IB 20 OUTPUT 10 VCO Turns c...
Страница 165: ...mber of power line cycles PLCs during a measurement lntegration thus greatly improves the Normal Mode Rejection NMR for a DVM where NMR is defined as the ability of a voltmeter to measure DC voltages in the presence of AC voltages at power line frequency The 3497A has best NMR at 5 digit setting 60 dB NMR for both 4 and 3 digits is 0 dB However to achieve this high NMR maximum speed is 50 chan nel...
Страница 166: ...e value of the in put voltage As shown total measurement time T1 for a 1 volt input is 16 67 ms t l where t l is the run down time while total measurement time T2 for a 2 volt input is 16 67 ms t2 v I I 2 v Run Down I t Integration Time IC 16 67 msec fixed f tl T I 1V Measurement Time d T2 2V Measurement Time kI Reading Rates for 3497A Maximum reading rates for 60 Hz operation of the DVM follow Fo...
Страница 167: ...g speed 300 readingstsecond with auto zero OFF HP IB 20 OUTPUT 10 VD3 See HP IB example Serial Data Operating Notes 1 Resolution and noise rejection are higher but reading speed is lower for 5 digit display than for 3 digit display 2 Power On State VD5 5 digit display Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 168: ... EOI LF Each reading is output in packed BCD format Multiple readings as set the VNn command are output every 3 bytes with no delimiters between readings Each reading is output as Time of Day string C R LF Voltage ASCII Analog Channel Number ASCII For multiple readings as set by VNn command Time of Day ONLY is sent with each new trigger rather than with each reading and C R LF is sent after the la...
Страница 169: ...t to be measured and press END LINE to continue the program This program sequentially measures input voltages from channel 0 to chan nel n 1 where n is the number you input i e if you specify 10 readings channel 0 through 9 voltages are measured For other channels add ap propriate AF and AL commands to line 9 0 to specify first and last chan nels to be measured Program SET INITIAL CONDITIONS 10 CL...
Страница 170: ... 15 P 06 260 NEXT 0 5 270 END For N 10 readings input a typical printout is CHANNEL VOLTS Voltmeter Format 3 As shown in Chapter 3 when the voltmeter format is set to VF3 the output from the 3497A is Time of Day Voltage Measured in ASCll format Analog Channel Number as illustrated where D decimal digit DD DD DD DD DD D DDDDD E D DDD CRLF 7 7 7 Time of Day ASCII Format Analog Measurement Channel Nu...
Страница 171: ...he desired time of day in line 30 insert numbers of channels to be measured in line 5 0 and set the amount of time if any desired bet ween measurements in line 90 Program Lines 10 CLEAR 709 20 20 DIM AS1161 30 OUTPUT 7Og TDO6 1113OOOOVF3 40 PRINT TIME OF DAYW TAB 17 VOLTS TAB 26 CHAN 30 50 FOR I 1 TO 10 60 OUTPUT 709 AI I 70 ENTER 709 AS V C 80 PRINT AS TAB 17 V TAB 26 C 40 90 WAIT 1000 80 100 NEX...
Страница 172: ...at of data output to the controller When voltmeter storage is ON VS1 or VS2 the output format is determined by the VS1 or VS2 and the VF1 or VF2 command 2 For Serial Data ONLY Delete LF in format 3 Power On State VF1 ASCII Output Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 173: ...later display on the front panel When voltmeter storage is ON VS1 or VS2 set each trigger pulse causes all n readings to be stored in the buffer For example with VT2 VN5 and VS1 set each trigger pulse input to the EXT TRlG port causes the voltmeter to take and store 5 readings in ASCII format up to a max imum of 60 readings for HP IB 5 0 readings for Serial Data The format for the VT command is To...
Страница 174: ...at maximum input voltage for the 3497A is 120V peak 1 3497A DVM RANGESIRESOLUTION I Range Maximum Display I Resolution For 1 Autorange 5 digits 1 p V 1 o p v 100 p v 1 mV Autorange is selected with the VR5 command In autorange the 3497A automatically selects the appropriate range to measure the input voltage by upranging or downrang ing to the first range which can accurately measure the input For...
Страница 175: ...for the DVM For example a 1 15V input can be displayed on either the 1 OV or 10 OV range If the DVM was previously on the 0 1V range it will uprange to the 1 OV range If the DVM was previously on the 100V range it will downrange t o the 10 OV range RANGE ov lv 1v 1ov l0OV 12ov MAX INPUT VOLTS I If UPRANGE POINT 4 DOWNRANGE POINT Figure 10 DVM Autorange Hysteresis EXAMPLES SETTING DVM RANGE 10 OUTP...
Страница 176: ...on state for the 3497A is voltmeter storage OFF VSO VOLTMETER STORAGE MAXIMUM READINGS ASCII 60 I 1Packed BCD 1 100 1 85 50 1 Command When the VS1 or VS2 command is selected and the DVM receives a trigger it takes the number of measurements set by the VNn command and stores all n readings in the voltmeter storage buffer There are t w o ways to get these readings out of the buffer front panel displ...
Страница 177: ...ng the CLEAR ENTRY key has no effect on the display Transferring Stored Readings to the Controller There are t w o modes to return stored readings to the controller depending on whether VS1 or VS2 is set With VS1 ASCII format all n stored readings can be input to the controller using an ENTER command and placing readings in a string or array variable Readings can then be directly printed or displa...
Страница 178: ... 1 TO 5 90 ENTER 709 A 100 PRINT I A I 110 NEXT I 120 END 40 VT4 Trigger hold VS1 Storage ON ASCII VN5 5 readingsltrig VT3 Single trigger VF1 ASCII Format 6 0 Request transfer of stored readings 80 110 Enter and print readings Operating Notes 1 Stored readings can be read sequentially from the front panel by entering VS to get the first reading followed by pressing the CLEAR ENTRY key for suc cess...
Страница 179: ...y pulses input to the EXT TRIG port on the rear panel When an external trigger must be a TTL pulse of at least 50 ns is received the DVM takes one or more measurements as set by the VNn command and then sets idle waiting for the next trigger If a trigger pulse is received when the 3497A is making a measurement the pulse is ignored Software Trigger VT3 When a VT3 command is sent the DVM is single t...
Страница 180: ... a trigger You can set the DVM to wait in intervals of 100 psec increments from 0 no wait to 99 9999 seconds The format for the VWn command is VWn n 0 to 999999 For example use VW 6 0 for a 6 msec pause between readings since 6 0 x 100 psec 6 msec Then as shown if reading 1 occurs at t 0 a 6 msec wait occurs after reading 1 is completed before reading 2 is initiated 10 OUTPUT 709 VW60 Causes voltm...
Страница 181: ... an input and an output port This part of the chapter shows how these ports can be used EXT TRlG Port The EXT TRlG External Trigger port allows you to trigger the DVM by using an ex ternal input pulse A low going TTL pulse input to the port triggers the DVM to take one or more readings and then wait for the next trigger input Input trigger signal requirements are EXT TRlG PORT INPUT SIGNAL REQUIRE...
Страница 182: ... 5 For example tf the present analog channel IS 12 an Input pulse will step the 3497A to channel 13 or 11 as prev ouslv program med The Input pulse requirements for EXT INCR are TIMER Pulses can be output from the TIMER port using the Time Interval l T l d or T me Output Ton1command Wlth Ton the TIMER port outputs p o s w e golng 16 sec w1de TTL pulses wlth per ods from 100psec to 9999 sec Wlth Tl...
Страница 183: ...ram so that an external trigger be input to the EXT TRlG port to start the DVM measurements After the trigger has been in put you can continue the program by pressing the CONT key on the hp 85A 1 0 CLEAR 709 2 0 OUTPUT 709 VN 10VT2S01AC 1 3 0 PAUSE 4 0 Send external trigger to EXT TRlG PORT 5 0 Press CONT key 6 0 FOR I 1 TO 1 0 7 0 ENTER 709 A I 8 0 PRINT I A I 9 0 NEXT I 100 END EXT INCR Port Use...
Страница 184: ...closed a pulse is output from the VM COMPLETE port into the EXT INCR port which causes the 3497A to increment to the next channel 2 Set first channel to be closed with AF20 and the last channel to be closed with AL29 the channel closure sequence will be 20 21 22 29 20 21 and enable the EXT INCR Rort with an AEI command A sample program is shown to measure and record voltages on channels 20 through...
Страница 185: ...ts of the 3497As for a total channel capacity of 20 channels assembly x 10 slots 200 channels the example shows only one assembly per 3497A for simplicity For this system the top 3497A is set to address 709 and the bottom 3497A to address 710 Also the 3497A at address 710 does not have a DVM so all 200 measurements will be taken by the DVM at address 709 Inputs from the 3497A at address 710 are vi...
Страница 186: ...C ports are tied together as shown line 6 0 in the program will not be executed When channel 0 at address 709 is clos ed the BBM SYNC port outputs a CHANNEL CLOSED TTL LOW pulse which does not allow channel 0 or any other channel at address 710 to close until channel 0 at address 709 is opened Thus the BBM SYNC port offers protection from unwanted multi channel closures when two or more 3497A main...
Страница 187: ...racteristics are shown This pulse is identical to that output from the VM COM PLETE port so timing reference should be from the HIGH to LOW edge of the pulse The CHANNEL CLOSED port output is especially useful when making high speed scanning measurements as the time to close relays becomes a significant factor in high speed operations One use of this output is to trigger an external voltmeter such...
Страница 188: ...oing 16 psec wide TTL pulses with minimum period of 100 psec and maximum period of 9999 sec with 100 psec increments SRQ BREAK is not available with the Ton command Although Ton overrides Tln at the TlMER port SRQ BREAK can still be used even when Time Output is active As with the VM COMPLETE AND CHANNEL CLOSED ports timing reference should be from the HIGH to LOW edge of the pulse The two TlMER p...
Страница 189: ...ller since the SRQ Mask is set for Time Interval Interrupt by the SE10 command If the controller clears the SRQ another SRQ message is sent every two minutes Even if the controller does not clear SRQ pulses are output from the TlMER port every two minutes PLUG IN ASSEMBLY CONTROL This part of the chapter shows how to use the 3497A commands to control the operation of the plug in assemblies Options...
Страница 190: ...z Reciprocal Counter 1 209 1 PAGE 0 7 0 0 71 44427A 110 44429A Dual Output 0 to 10V Voltage 1 I 2 O 1 ID A Converter 1 265 1 44427B 115 1 130 1 44430A 1 Dual Output 0 20mAl4 20mA 1 270 1 1 2 0 Ohm Strain GaugeIBridge Completion 44428A I I I Current D A Converter 1 I 231 3 5 0 Ohm Strain GaugeIBridge Completion 44431A 1 140 1 44432A 1Breadboard Card 1 275 231 ActuatorIDigital Output 245 8 Channel H...
Страница 191: ...nts Simplified Operation As shown in Figure 13 the relay multiplexer assembly consists of a relay card and a terminal card Inputs from system sensors such as voltage sources etc are in put to the terminal card on channels A 0 through B9 and are sent to the relay card relays Each channel consists of a HIGH LOW and GUARD line Relays are divided into t w o groups decades A decade and B decade In norm...
Страница 192: ...497A Or by removing JM4 JM5 and JM6 you can separate the A decade out puts from the B decade outputs for four wire ohms measurements COMMO N BUS TO DVM 3 4 9 7 A MAINFRAME RELAY CARD OPTION 0 1 0 TERMINAL CARD OPTION 0 1 0 TREE SWITCH w w w I w RELAYS I N DECADE A ONE OF TEN 111 RELAYS I N DECADE B I I I i t i M I 3 0 I I 3 9 I I I 1Fc COMM I I 30 0 I I I I Figure 13 Option 010 Simplified Operatio...
Страница 193: ...NEL Sets last channel to be closed in a sequence but does not close the channel If AF AL sequence is increasing If AF AL sequence is decreasing To set 53 as last channel to be closed use AL53 ANALOG RESET Opens all channels on all multiplexer assemblies in a 3497A or 3498A In addition AR sets VF1 VT1 VR5 VWO VSO AEO AFO and AL999 ANALOG STEP Increments or decrements channel closure between AF and ...
Страница 194: ...he number of the chan nel closed and the 6 digit display shows the value of the DC voltage measured DCV on the display Relay Assembly Channel Addresses The slot in which the assembly is placed determines its channel addresses Since each assembly has decades A and B with inputs A 0 through B9 for an assembly in slot 0 the A decade addresses are 0 through 9 and the B decade addresses are 1 0 through...
Страница 195: ...Keys LINE AC power ONlOFF switch RESET Clears 3497A sets assembly as follows AO Al AS AV Disabled AEO EXT INCR Port OFF AFOOO First Chan 000 AL999 Last Chan 999 LOCAL Puts 3497A in local front panel mode of operation ANALOG KEY GROUP Used to control relay multiplexer ALPHA NUMERIC KEYBOARD Each key has three modes Primary upper part Numeric 0 9 plus Shifted A C D etc on lower part 10 SHIFT Shifts ...
Страница 196: ...nts using this command AF and AL commands do NOT close channels Another command such as AC or Al must be used to close channels AF and AL determine the first and last channels to be closed in a sequence I t AS command sequences channel closures between AF and AL The sequence is increasing if AL AF and decreasing if AL AF i e if AF is 40 and AL is 59 AS increments channels from 40 to 41 etc If AF i...
Страница 197: ...gure 1 6 which apply to HP IB or Serial Data operation Jumper settings are the same as for front panel control Sample Command Sequences Remote HP IB Operation I Action s I Command s I Example Programs CLOSE CHANNEL 40 INPUT VALUE AT CHANNEL 40 CLOSE CHANNELS 40 50 INPUT VALUE AT CHANNEL 40 TRIGGER DVM TO TAKE MEASUREMENT AC40 50 AND A140 10 CLEAR 709 20 OUTPUT 709 AC40 30 ENTER 709 A 40 PRINT A 50...
Страница 198: ...her mocouples per assembly but is limited to one thermocouple type per assembly Soft ware compensation can be used to measure the outputs of up to 19 thermocouples with any mixture of thermocouples You can use the Option 020 assembly with hardware compensation to measure the outputs of up to 2 0 B E J K R S or T type thermocouples one type per assembly You can use the assembly with software compen...
Страница 199: ... closes the relay in channel A 0 and the voltage input at channel A 0 is sent to the A COMMON and B COMMON connectors on the terminal board to the rear panel connectors on the 3497A and to the DVM Several optional configurations are available by removing jumpers JM1 through JM6 For example by removing JM1 JM2 and JM3 channel inputs are not sent to the 3497A Or by removing JM4 JM5 and JM6 you can s...
Страница 200: ...sures the voltage of an isothermal block This voltage is a function of the temperature of the block and is input to channel B9 100 mV deg C Thus with software compensation only 19 channels are available for inputs since the 20th channel B9 is dedicated to the reference junction transducer circuits However you can use a mix of thermocouples on a single assembly To arrive at the true thermocouple vo...
Страница 201: ...le being measured Thus with hardware compensation the voltage displayed on the front panel or at the controller is the true compensated thermocouple voltage and can be directly used with a standard look up table to determine equivalent temperature Controlling the Multiplexer Assembly The 20 channel relay multiplexer with thermocouple compensation is controlled with the ANALOG command group The fol...
Страница 202: ...channel to be closed in a sequence but does not close the channel If AF AL sequence is increasing If AF AL sequence is decreasing To set 53 as last channel to be closed use AL53 ANALOG RESET Opens all channels on all multiplexer assemblies in a 3497A or 3498A In addition AR sets VFl VTl VR5 VWO VSO AEO AFO and AL999 ANALOG STEP Increments or decrements channel closure between AF and AL channels If...
Страница 203: ... Keys LINE AC power ONiOFF switch RESET Clears 3497A sets assembly as follows AO Al AS AV Disabled AEO EXT INCR Port OFF AFOOO First Chan 000 AL999 Last Chan 999 LOCAL Puts 3497A in local front panel mode of operation ANALOG KEY GROUP Used to control relay multiplexer ALPHA NUMERIC KEYBOARD Each key has three modes Primary upper part Numeric 0 9 plus Shifted A C D etc on lower part 0 SHIFT Shifts ...
Страница 204: ...sembly in Slot To show how the assembly can be controlled from the 3497A front panel sample keystroke sequences to enter commands are shown in Figure 19 For all commands except multi channel closure AC chan chan I jumpers JM1 through JM6 are IN and the TIC COMP jumper is in the NO TIC COMP position For the AC chan chan command the TIC COMP jumper is in the NO TIC COMP position and jumpers J4 J5 an...
Страница 205: ...wire ohms measurements using this command AF and AL commands do NOT close channels Another command such as AC or Al must be used to close channels AF and AL determine the first and last channels to be closed in a sequence 1 1 1 AS command sequences channel closures between AF and AL The sequence is increasing if AL AF and decreasing if AL AF i e if AF is 40 and AL is 59 AS increments channels from...
Страница 206: ...AND A140 SET FIRST CHANNEL TO 40 SET LAST CHANNEL TO 59 AND SEQUENCE FROM 40 TO 59 DELAY 5 SEC BETWEEN CHANNEL CHANGES 10 CLEAR 709 20 OUTPUT 709 AC40 30 ENTER 709 A 4 0 PRINT A 50 END AF40 AL59 AND AS 10 CLEAR 709 20 OUTPUT 709 AC40 50 30 OUTPUT 709 A140 40 ENTER 709 B 50 PRINT B 60 END 10 CLEAR 709 20 OUTPUT 709 AF40AL59 30 FOR 1 40 TO 59 40 OUTPUT 709 AS 50 WAIT 500 60 NEXT I 70 END The multipl...
Страница 207: ...he Option 050 assembly with the actuatorldigital output assembly Option 110 to form an independent digital inputloutput port Also the assembly can be configured for 8 channels 0 7 for interrupt and the remaining 8 channels 8 15 for digital input operation Description As shown in Figure 21 the Option 050 assembly consists of a digital input card and a terminal card The digital input card consists o...
Страница 208: ...nsition this can be programmed for low to high if desired which causes the channel bit in the input byte to be set true 1 In Figure 22 transitions have occurred on channels 0 and 7 so bits 0 and 7 in the input byte are set to 1 Since interrupt is desired only for channel 0 we ve set the assembly mask not the same as the SRQ or interrupt mask in the 3497A with a DE slot O command Since the mask bit...
Страница 209: ...lot n command and 2 set the 3497A SRQ or interrupt mask with an SE2 or SE102 command You can monitor the status of the interrupt byte at any time whether or not an in terrupt occurs by sending the Dl slot command The value returned to the con troller is the octal value of the true bits in the interrupt byte SET WITH SE2 S E I O Z COMMAND INTERRUPT BYTE SET BY DE SLOT O 1 MASK INPUT BYTE OPTION 0 5...
Страница 210: ...equence is as shown in Figure 23 The 3497A initiates the sequence by signaling a READY condition on the GATE output to the data source The READY condition occurs when a DR slot or DL slot command is sent and tells the source that the 3497A is ready to accept data When the data source has data ready DATA STABLE the FLAG signal transitions frbm low to high on the FLAG line This action in turn causes...
Страница 211: ...ATA TRANSFER Figure 23 Option 050 Digital Input Mode 1 GATE HERE Controlling the Option 050 Assembly For both interrupt and digital input the Option 050 assembly is controlled by the DIGITAL command group The following chart summarizes the DIGITAL commands to which the assembly responds See the Command Directory in Chapter 6 for details and examples Artisan Technology Group Quality Instrumentation...
Страница 212: ...ion sense DIGITAL READ Reads the condition of the digital input card on a continuous basis Data returned to the controller is the octal value of the true bits in channels 0 15 for the slot addressed DIGITAL LOAD Returns the same information as the DR slot command except that only one readinglcommand is returned DIGITAL VIEWED SLOT Dedicates the front panel display to the slot specified in the comm...
Страница 213: ...Each key has three O m o d e s Keys LINE AC power onloff switch Primary upper part Numeric 0 9 plus and Shifted A C D etc on lower part Shifted mode is entered when SHIFT key g IS pressed 0 ORESET Clears 3497A Sets the assembly as follows SHIFT Shifts keyboard to shifted mode A C D V etc When pressed light i n center of key is ON Interrupts Enable DE Disabled Interrupt Status Dl Not Monitored 10 C...
Страница 214: ...n channel 2 or 5 the program is shifted to an INTERRUPT subroutine and the octal value of the interrupt channel is entered If channel 2 received the interrupt CHAN 2 INTER RUPT is printed out If channel 5 received the interrupt CHAN 5 INTER RUPT is printed out If the interrupt was caused by action from another slot NO SLOT 3 INTERRUPT is printed out 10 CLEAR 709 20 ON INTR 7 GOSUB 1OOO 30 ENABLE I...
Страница 215: ...ntrol the assembly for the digital input mode Recall that the Dl slot command reads the status of the interrupt bits In contrast the DR slot and DL slot colrimands read the status of the input bits Also in contrast to interrupt mode digiid input is available in the 3498A so slots 0 to 4 and 1 0 to 8 9 are available for this mode When a DR slot or DL slot command is sent the octal value returned is...
Страница 216: ...ignals are input to the INPUT HlGH and INPUT LOW connectors The counter can accurately measure a wide variety of input signals as long as the signal parameters are within specification limits Although square wave inputs are used for the examples in the manual you can use other inputs such as triangle or sine wave and still achieve accurate results The OUTPUT HlGH and OUTPUT LOW terminals on the co...
Страница 217: ...tput a programmable number 0to 499999 of square wave pulses to drive external circuitry COMPLETE OR A OVERFLOW 0 Figure 25 Option 060 100 kHz Reciprocal Counter Assembly u o n LEVEL CHANGE FOR MEASUREMENT The 100 kHz reciprocal counter has five main operations count up count down period measurement pulse width measurement and pulse output Each operation is summarized with the counter assumed to be...
Страница 218: ...ntered 5 seconds after start If the total count exceeds 999999 counts the counter generates a level change at the OUTPUT HlGH terminal For the 1 kHz input in this exam ple this would occur after 997 seconds 1000 sec 3 sec for the 3000 count start point If interrupt on overflow has been preset the counter also generates an interrupt signal to the 3497A at this time Count Down In count down the coun...
Страница 219: ...re the periods of input signals with frequencies from 0 0001 Hz to 100 kHz periods from 0 00001 sec to 10 000 sec You can program the counter to send an interrupt to the 3497A when a measure ment is complete and or when the input signal period cannot be measured an overflow condition In addition a level change is available at the minal when either of these two conditions occur and if enabled to th...
Страница 220: ...measure 1 period and a maximum of 0 3 seconds to average 1000 periods of the input If the input signal period can t be measured because the pulse width is too short for the measurement range selected a counter overflow condition oc curs and a level change output and interrupt when enabled occurs For instance if you tried to measure the pulse width of a 1 MHz square wave input an overflow condition...
Страница 221: ...T REACHED I N P U T LO PULSE OUTPUT USER I N P U T RANGES O f I N Z k H z P W 5 u s e c INTERRUPT TO OUTPUT PULSES 3 4 9 7 WHEN n n n n ZERO COUNT REACHED OUTPUT H I COUNTER CARD x OUTPUT PULSES 1 2 SET BY CS SLOT N Figure 26 Option 060 Modes of Operation I O R TO 3 4 9 7 A OUTPUT LO WHEN 9 9 9 9 9 9 COUNTS REACHED L E V E L CHANGE OUTPUT COUNTER CARD WHEN 9 9 9 9 9 9 COUNTS REACHED Artisan Techno...
Страница 222: ...olling the Counter This part of the chapter shows how to control the counter using the COUNTER com mand group It introduces reciprocal counter techniques describes counter com mands shows 3497A front panel features used with the counter and lists sample command sequences for local front panel and remote HP IB and Serial Data operation Counter Measurement Techniques There are three basic counter te...
Страница 223: ...f n 10 counts are made f 1011 10 Hz 1 SEC GATE I I I MEASURES PERIOD L RECIPROCAL COUNTER Figure 27 Option 060 Counter Measurement Techniques Counter Commands As shown in the following table there are five COUNTER commands to control the counter Each command has the form CX slot n where slot is the slot that the counter is in and n is a number which sets a function within the command In ad dition ...
Страница 224: ...et number for count up count down or pulse output operations SELECT TRIGGER EDGE n 1 Period Measurement Trigger Rising Edge to Rising Edge 2 Period Measurement Trigger Falling Edge to Falling Edge 3 Pulse Width Measurement Trigger Rising Edge to Falling Edge 4 Pulse Width Measurement Trigger Falling Edge to Rising Edge COUNTER READ n 1 Read Without Wait one value only 2 Read With Wait one value on...
Страница 225: ...n SI command The initial value can be set to any number within the range with the preset counter CS command Count up stops at 999999 counts After 999999 counts OL is displayed on the front panel and 9E9 is available over the remote HP IB or Serial Data interface Count Down CF slot 2 The counter counts down from a preset value within the range of 000000 to 999999 Unless the counter is preset to 000...
Страница 226: ...Width Chart is valid only for continuous 50 duty cycle inputs For example to measure the period of a 100 Hz input signal 01 sec period note from the Period Ranges Chart that any of four CF commands can be selected If CF slot 6 is used one period is measured and max imum measurement time is 02 seconds Ten counts are made the 3497A front panel display is 0000 01 SEC and 0 000010E 3 is available over...
Страница 227: ...0 001000E 3 0001 oo 103 2 I I 1000 pulse widths averaged ICF slot 3l I 1 Remote Data secl 3497A Oisp lsecl Number of Counts Imaxl Maxlmum Measurement Time Isecl Remote Data lsec 3497A Disp lsec Number of Counts lmaxl 1 Maximum Measurement Time lsecl For continuous 50 duty cycle input NOTE CF slot 3 thru CF slot 5 use a lo5Hz internal clock CF slot 6 uses a lo3Hz mternal clock 10k sec 0 010000E 2 0...
Страница 228: ...ured for the pulse output mode Select Trigger Edges CT slot n Command The CT command sets the edges of the input signal on which triggering takes place and is used with the counter function CF command The CT command MUST be set before the CF command as changing the CT command during a counting opera tion will change trigger edges and stop the counter When the counter function com mand is set to co...
Страница 229: ... Counter Read CR slot n Command Counter read commands send count or measurement data to the 3497A front panel and or over the remote interface There are three types of counter read CR com mands read without wait n 1 read with wait n 2 or counter internal trig ger n 3 Data available after a counter read command is executed as shown Note that the front panel display is limited to six digits while se...
Страница 230: ... pulse width measurement means max measurement time exceeded Overflow for count up function means that 999999 counts exceeded Read Without Wait CR slot I With the CR slot l command the counter is read without disturbing data flow in to the counter If a measurement is in progress but not yet completed interim results shown in the previous table can be displayed on the 3497A and passed to the remote...
Страница 231: ...s as in 5 This is a re reading of the previous answer 7 Counter initiates another period measurement 11 Read With Wait CR slot 2 With the read with wait command results are returned only after the measurement is completed For period or pulse width measurements all data is accumulated and averaged if required and the 3497A waits for the completed measurement before outputting data to the interface ...
Страница 232: ... nal trigger has different meanings for HP IB and Serial Data operation For HP IB operation with CR slot 3 the 3497A is dedicated to continuous update readings and is not free to perform any other action For count upldown functions the counter repeatedly obtains readings and updates them For periodlpulse width measurements complete measurement cycles initiate wait answer are repeatedly performed F...
Страница 233: ... for digital interrupt with an SE102 command PeriodIPulse Width CF slot 3 thru 6 999999 counts Completed measurement available 2 Use CE slot n to set the counter to for a desire interrupt condition For in terrupt on measurement complete use CE slot l For interrupt on overflow use CE slot 2 3 Enable the controller interface devices to recognize and react t o an interrupt input signal See Front Pane...
Страница 234: ...for interrupt on overflow SE 2 Enable the 3497A for digital interrupt HP IB OR SE102 Enable 3497A for digital interrupt Serial Data Dl 3 Determine cause of interrupt For this example 3 is returned when 999999 counts are exceeded Front Panel Operation Figure 30 shows the 3497A front panel keys and display used with the counter Since all counter commands have the form CX slot n to initiate commands ...
Страница 235: ...nter as follows CF to Stop CF slot O CE to No Interrupts CE slot 1 CR to Read Without Wait CR slot 1 CS to 000000 CS slot O CT to Rising EdgelRising Edge CT slot l 6 SRQ Initiates Service Request action to remote HP OIB interface 7 L OCAL Places 3497A in local front panel opera 0 on ALPHA NUMERIC KEYBOARD Each key has three modes Primary upper part Numeric 0 9 plus and Shifted A C D etc on lower a...
Страница 236: ...ng COMMAND RESET CS4 500 CF4 2 CR4 l RESET CS4 200 CF4 2 RESET CT4 3 CF4 4 CR4 3 RESET CE4 2 CF4 l DISPLAY COMMENTS SLOT 0 4 000500 TOT 000500 TOT shows 5 0 0 counts in counter SLOT 0 4 000000 TOT Must count down from 200 to get 100 output pulses SLOT 0 4 000000 SEC Procedures for remote programming are the same as for front panel operation ex cept that command sequences are initiated by the contr...
Страница 237: ... 50 ENTER 709 A 6C PRINT COUNTS A 7 0 END 1 0 CLEAR 709 2 0 OUTPUT 709 CT2 2CF2 5CR2 2 3 0 ENTER 709 B 4 0 PRINT INPUT PERIOD B 50 END 1 0 CLEAR 709 2 0 OUTPUT 709 CT2 3CF2 3CR2 3 3 0 ENTER 709 C 4 0 PRINT PULSE WIDTH C 5 0 END 1 0 CLEAR 709 2 0 OUTPUT 709 CS2 200CF2 2 3 0 END 1 0 CLEAR 709 2 0 ON INTR 7 GOSUB 1000 3 0 ENABLE INTR 7 8 4 0 OUTPUT 709 SE2CE2 1 50 Main Program 0 990 End Main Program ...
Страница 238: ...lots in a 3497A and 45 slots in 3498As maximum which can be used for these assemblies you can provide up to 500 channels for transducer measurements or up to 133 channels for three element strain gauge rosettes Of course the 44427AlB can be used in the same 3497A mainframe with other 3497A assemblies for mixed measurements For example you could use the Option 020 thermocouple compensation assembly...
Страница 239: ...urement accuracy is independent of long term power supply voltage changes and an inexpensive supply such as the hp Model 6214A or 62005A is adequate to achieve rated accuracy specifications The Model 6214A can provide power for 50 channels 5 assemblies while the 62005A can power up to 80 channels Several diagnostic tests are available on the 44427AlB assemblies to check circuit integrity or enhanc...
Страница 240: ...e used t o make these measurements See hp Application Note 290 1 Practical Strain Gauge Measurements for general background information on strain gauge measurements Strain We ll use the term strain 6 t o mean the ratio of a fractional change in length t o the unstrained length ALIL Since the magnitude of AL is usually less than 1 of L the strain gauge assemblies use a Wheatstone Bridge circuit for...
Страница 241: ...s are fixed value resistors or unstrained gauges Ideally the strain gauge Rg is the only resistor in the circuit which varies We can relate the ratio of the input voltage t o the output voltage by Vout R3 Vin R1 R2 R21 Equation 2 applies to both strained and unstrained states To measure strain t w o measurements must be taken 1 measure Vout with the gauge in the unstrained state and then 2 measure...
Страница 242: ...ain gauge measurements with this circuit the DVM is switched between points C D D E etc and measures Vout for each channel Although not shown in Figure 34 the DVM can also be switched to measure Vin The procedure to measure strain with this circuit is as follows assuming that the Gauge Factor is known an example program see EXAMPLE SCANNING STRAIN GAUGES For 1 Measure Vin and store the value 2 Mea...
Страница 243: ...es If you want to measure the voltage on a sequence of channels use the AF AL and AS commands For example to scan channels 0 through 9 set AFO and AL9 Then sending AS repeatedly will cause relay closure on channel 0 1 g O Note that if AF AL the sequence is increasing from AF through AL and back to AF If AF AL the sequence is decreasing from AL through AF and back to AL i e if AF9 and ALO are set s...
Страница 244: ...st channel to be closed in a sequence but does not close the channel If AF AL sequence is increas ing If AF AL sequence is decreasing To set 53 as last channel to be closed use AL53 ANALOG RESET Opens all channels on all strain gauge assemblies in E 3497A or 3498A In addition AR sets VF1 VTl VR5 VWO VSO AEO AFO and AL999 ANALOG STEP Increments or decrements channel closure between AF and AL channe...
Страница 245: ...ys LINE AC power ONIOFF switch RESET Clears 3497A sets assembly as follows AO Al AS AV Disabled AEO EXT INCR Port OFF AFOOO First Chan 000 AL999 Last Chan 999 LOCAL Puts 3497A in local front panel mode of operation ANALOG KEY GROUP Used to control relay multiplexer ALPHA NUMERIC KEYBOARD Each key has three modes Primary upper part Numeric 0 9 plus Shifted A C D etc on lower part 10 SHIFT Shifts ke...
Страница 246: ...497A slot for 3498A slots add 100 to each number shown for the first 3498A 200 to each number for the 2nd 3498A etc Note that for each slot the 10 lowest numbers the A decade are for strain gauge measurements while the 10 highest numbers the B decade are for bridge diagnostics excitation measurements etc On the terminal card the strain gauge inputs HI SIG L SIG and GISHLDI have designators A0 thro...
Страница 247: ...LS Exact values may vary widely WIRE RESISTANCE Solid Copper Wire I i Diameter in 0 040 0 032 0 0253 0 0201 0 0159 0 0126 0 010 0 008 Material I ABS unfilled Aluminum 2024 T4 Aluminum 7075 T6 Red Brass soft Iron Gray Cast Polycarbonate Steel 1018 Steel 4130 4340 Steel 304 SS Steel 410 SS Poisson s Ratio v Modulus of Zlasticity E psi x lo6 0 2 0 4 10 6 10 4 15 13 14 0 3 0 38 30 30 28 29 14 Elastic ...
Страница 248: ...e opposite Pr nc pal stresses and 6 p s the acute angle from the axis of gage 1 to the nearest prln NOTE Corrections may be necessary for cipal axis When positive the direction IS the transverse sensitivity refer to gage rnanufac same as that of the gage numbering and turers literature Figure 36 Options 0701071 Strain GaugeIRosette Equations Cont d Artisan Technology Group Quality Instrumentation ...
Страница 249: ...use Step 2 Measure Bridge Output with Gauge Unstrained The next step is to measure the voltage output from the 114 bridge with the gauge in an unstrained condition Since the gauge is connected t o ter minal A2 channel 2 must be closed To close channel 2 send A2 and record the voltage as Voutu Step 3 Measure Bridge Output with Gauge Strained The third step is to apply a strain to the gauge and reco...
Страница 250: ...ram to scan channels 0 through 9 and print the strain on each channel is shown in the following example GF 2 and a 4 bridge arrangement for each channel is assumed To convert the program for other channels and or other bridge arrangements modify lines 40 60 170 and 220 as required I EXAMPLE SCANNING STRAIN GAUGES I Program CLEAR 709 PRINT STRAIN GAUGE MEASUREMENTS PRINT OUTPUT 709 AFOAL9AC 10 ENTE...
Страница 251: ...n channels 0 through 9 and computes VoutIVin unstrained Program halts to allow strain to be applied to gauges Measures strained voltage on channels 0 through 9 and computes VoutIVin when gauges are strained Computes strain and prints results in microstrain A typical printout is STRAIN GAUGE MEASUREMENTS CHANNEL MICROSTRAIN Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE w...
Страница 252: ...igured as a 4 x 4 point matrix scanner and additional assemblies can be added to construct larger matrices Since the Option 110 assembly can switch one amp at 100 volts it can be used to switch test fixture power or to actuate alarm bells In addition the assembly can be used with the 16 channel isolated digital inputlinterrupt assembly Option 050 to provide an independent digital inputloutput port...
Страница 253: ...ays KO through K15 can be switched from the Normal Open posi tion to the Normal Closed position and thus switch power to or from loads When a relay is de energized the Normal Closed line is connected to common When a relay is energized the Normal Open line is connected to common By using the DC slot chan chan and DW slot octal value commands from one to 16 relays can be closed set to the Normal Op...
Страница 254: ...ing Mode The assembly can be used in many applications as long as the load circuits are fused for 1A or less and less than 100 VA To indicate some of the ways that the assembly can be used in the actuator mode Figure 39 shows a relay actuated alarm circuit voltage switching and matrix switching For the alarm circuit closing the relay applies power to sound the alarm device For example the relay cl...
Страница 255: ... instruments I1 through 14 by closing relays KO through K15 as required i e to connect source S3 to instrument 12 close relay K6 etc 1 1SVAC USTEP DOWN r 7 TRANSFORHER CONTACT PROTECTION CONNON I RELAY ACTUATED ALARM CIRCUIT I VOLTAGE SWITCHING COMM K8 COMM u MARTRIX SWITCHING 3497 OPC 39 Figure 39 Option 110 Actuator Mode Examples Artisan Technology Group Quality Instrumentation Guaranteed 888 88...
Страница 256: ...ng pullups across four terminal card jumpers When handshaking is enabled the handshake sequence for either High Gate High Flag or Low Gate Low Flag operation is as shown in Figure 40 When a 16 bit wide word is entered into the assembly and settling time has occurred the assembly sends a Gate output to the receiver to signal Data Valid condition Then after the word is transferred to the receiver th...
Страница 257: ... 1 I I 1 I I I 1 LLFLGI j j I I I I I I I I I I I I I I 1 I I I 1 I I I I HIGH FLAG I I IHFLGl 1 I T I 1 6 bit wide data word transferred to actuator card relays T I T2 Settling time for relays and drive circuits r3rn s T2 Data Valid ready for transfer to external device T2 T3 Data transfer executed during this time period T3 Data transfer complete Actuator card and 3497A wait until positive going...
Страница 258: ...dressed Value returned is octal representation of the state Only one readinglcommand is returned DIGITAL READ Same as the DIGITAL LOAD command except that repeated reads of the actuator card are made and up dated on the display and on the interface bus DIGITAL VIEWED SLOT Dedicates the 3497A front panel display to a slot Exit from this mode by using the command DV without the slot designation DIGI...
Страница 259: ...display Shows octal equivalent of digital channels status i e 000377 OCT channels 0 thru 7 on 11111111 binary DISPLAY FUNCTIONS Only OCT and ENT used with ac tuator OCT shows display is octal representation of digital channels ENT means data can be entered LINE AC power onioff switch RESET Clears 3 4 9 7 A Sets all relays t o open LOCAL Puts 349711 in local mode of operation ALPHA NUMERIC KEYBOARD...
Страница 260: ...nly closed digital 0000 0000 0011 0000 is 060 So to close channels 4 and 5 and simultaneously open all other channels for an actuator in slot 2 the command is DW2 060 With the DW command you must use an octal value to represent the desired state AFTER the command is executed For example assume that all relays in an assembly are closed Then DW slot 060 opens all relays except channels 4 and 5 digit...
Страница 261: ... 2 for each of the 16 channels of an actuator in slot 3 as shown in Figure 42 In addition we want to check that the switching actually took place so we ll read the status of the relays after each channel is switched A Sam ple program follows which shows a way to accomplish these actions CHANNEL 1 5 E 1 0 0 VAI 1 A MAXI CONTACT r 0 PROTECTION 0 0 0 0 CHANNEL 0 CONTACT PROTECTION CAUTION FOR LOADS 1...
Страница 262: ...s 10 20 70 90 100 130 140 200 Line 10 opens all relays and line 20 sets the time of day to June 29 1 00 00 PM Option 230 format Line 70 sequences program from channel 0 to channel 15 Line 80 closes channel I and Line 90 opens the previously closed channel 1 11 The value returned to AS by the DR command is in octal so line 120 performs an octal to decimal OTD conversion In line 130 the decimal valu...
Страница 263: ...nels 0 through 15 true or I The Digital Read DR command causes the 3497A to continuously return data while the Digital Load DL command provides a single readlcommand You can enter the commands either from the front panel or from a controller The status of the data bits can be displayed on the front panel or printed out For example assume that a digital input assembly in slot 2 is connected to a da...
Страница 264: ...n As shown in Figure 43 the Option 115 assembly consists of an actuator card a terminal card and a grounding strap for connecting the assembly to customer earth ground The actuator is an 8 channel high voltage switch which can be used to close or open circuit paths for voltages up to 252 VRMS AC at 2 amps or 48 VDC at 2 amps Because of its high voltage switching capabilities the actuator is ideal ...
Страница 265: ...a readback circuits for front panel display and or to the interface bus The readback circuits are actuated in parallel with the load contacts but are electrically separate Thus no load current flows through the readback contacts and they have no effect on load operation The actuator card has an RC relay contact protection circuit in each channel R 47 ohms C 0 047 pF With the protection network max...
Страница 266: ...tage actuator assembly is controlled by DIGITAL commands as shown in the following chart See the Command Directory in Chapter 6 for details and examples Front Panel Features Used With the Assembly Figure 45 shows the front panel keys and display used with the assembly Since the Option 115 assembly is a digital assembly only the digital display is used The slot number addressed is shown on the 3 di...
Страница 267: ... addressed Value returned is octal representation of the state Only one readinglcommand is returned DIGITAL READ Same as the DIGITAL LOAD command except that repeated reads of the actuator card are made and up dated on the display and on the interface bus DIGITAL VIEWED SLOT Dedicates the 3497A front panel display to a slot Exit from this mode by using the command DV without the slot designation D...
Страница 268: ...t OCTshows display is octal representation of digital channels ENT means data can be entered LINE AC power onioff switch RESET Clears 3497A sets all relays to open LOCAL Puts 3497A in local mode of operation ALPHA NUMERIC KEYBOARD 3 functions for each key Primary upper part Numeric 0 9 plus Shifted A C D etc on lower part SHIFT KEY Shifts keyboard to shifted mode A C D etc When pressed light in ce...
Страница 269: ... or closed The Digital Write DW command in contrast affects the state of ALL the relays in the assembly For example the octal value for relays 4 and 5 only closed digital 0011 0000 is 060 So to close channels 4 and 5 and simultaneously open all other channels for an actuator in slot 2 the com mand is DW2 060 With the DW command you must use an octal value to represent the desired state AFTER the c...
Страница 270: ...according to the following sequence For this example we ll assume that each motor is stopped by an external control after the run time shown in the chart A simplified connection diagram and sample program for this sequence follow In the program channel 0 relay is closed thus supplying voltage to motor starter A which starts motor A Five minutes later channel 0 relay is opened thus removing power f...
Страница 271: ...00 290 PRINT CHANH I RELAY FAILED 300 END Lines Description 40 50 Line 40 opens all relays and line 50 repeats cycle 3 times 60 120 Sequence closes channel 0 waits 5 minutes then opens chan nel 0 If relay does not open or close program prints CHAN 0 RELAY FAILED and halts DR2 in line 60 is optional command for front panel display 130 190 Repeats sequence in lines 60 120 for channel 1 except for a ...
Страница 272: ... such as power supplies and VCOs Description As shown in Figure 46 the Option 120 Voltage D A Converter consists of a single board with a voltage source terminal block and a piggy back board The voltage source terminal block has connectors for HI LO SENSE and SENSE for each of two channels channel 0 and channel 1 The assembly is a programmable constant voltage source which has an output range from...
Страница 273: ...AC from now on to output 1 0000 V to a load resistance R However because of lead resistance RI the actual voltage to R is less than 1 0000 V because of the voltage drop across the leads Now if we add remote sensing SENSE and SENSE leads as shown in Figure 47 b we can measure the actual voltage across R With remote sensing the VDAC automatically adjusts its output to compensate for the IR drop in t...
Страница 274: ...has monotonicity over its operating range which guarantees that the output will never change in a direction different than that programmed For example if the VDAC is set for a 5 mV output and is then programmed for a 10 mV output the actual output will not be less than 5 mV Or if the VDAC is set for 5 mV and is then programmed for a 2 5 mV output the actual output will not be greater than 5 mV V V...
Страница 275: ...ed from 0 to 10238 in units of millivolts However the voltage output is in units of 2 5 mV so for programmed values other than integer multiples of 2 5 mV the 3497A will round off the value to the nearest integer multiple of 2 5 mV slot 0 to 4 and 10 to 89 chan 0 or I value 0 to 10238 For example if the command A03 0 1 is entered the 3497A rounds the 1 to 0 and sends this to the VDAC so no output ...
Страница 276: ...SET VDAC FOR VOLTAGE OUTPUT The following program sets the VDAC to output 120 mV on channel 0 of an assembly in slot 4 10 CLEAR 709 20 OUTPUT 709 AO4 O 120 30 LOCAL 709 40 END Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 277: ...al current loops Each output will drive an industrial cur rent loop with up to 600 ohms of total loop resistance Description As shown in Figure 48 the Option 130 Current D A Converter consists of a single board with a current source terminal block and a piggy back board The current source terminal block has connectors for a current source SOURCE and current sink SINK for each of two channels chann...
Страница 278: ...r the IDAC to supply constant current in the 0 20 mA range Since the compliance voltage equals the total circuit resistance times the output cur rent this means that for a 2 0 mA output the maximum load resistance for the IDAC is 600 ohms and may be less if lead resistance is relatively high For example in Figure 49 if RI lead resistance 0 5 ohms in each lead and RL 600 ohms RT 601 ohms and compli...
Страница 279: ...nd A 0 slot chan 160 sets the IDAC for a constant cur rent output of 4 256 mA for the 4 20 mA range but sets the IDAC for an output of 0 1 60 mA in the 0 20 mA range The IDAC is factory set for the 0 20 mA range but can be jumper enabled for 4 20 mA range on channel 0 or 1 or both To provide a desired current output to the load the IDAC is programmed using the A 0 slot chan value command where the...
Страница 280: ... range For example in the 0 20 mA range programming a value of 10238 gives 102 38 of range or 20 475 mA The following chart gives output currents for selected A 0 program values for both the 0 20 mA range and the 4 20 mA range Note that the same A 0 com mand will give a different output for the 0 20 mA range and 4 20 mA range 1 The IDAC is factory se ing the assembly to the 4 20 mA range requires ...
Страница 281: ...ram value of 5000 A 0 slot chan 50001 which is 50 of span gives an output of 12 mA i e 50 of 16 mA 8 mA 4 mA minimum So send A02 1 5000 to output 12 00 mA from channel 1 of an IDAC in slot 2 when the IDAC is in the 4 20 mA range The following program sets the IDAC to output 10 00 mA from channel 0 of an IDAC in slot 3 if the assembly is set for 0 20 mA range or to out put 12 00 mA from channel 0 o...
Страница 282: ...label ed ANALOG SECTION and DIGITAL SECTION Either grid however can be used for either type of circuit depending on requirements The third grid can be used as an extension of the analog and or digital grids or if a terminal card is to be used can be cut off and removed Interconnected holes across both the top and bottom of each grid form buses for power supply and ground connections The analog gri...
Страница 283: ...ommands will not be recognized by the digital section because except for the three SYSTEMS commands shown previously the 3497A software requires an identify ing response from a digital assembly when a DIGITAL or SYSTEM command is executed Controlling the Breadboard Card Assembly As mentioned the digital section of the breadboard card assembly is controlled by three SYSTEM commands SI SR and SW whi...
Страница 284: ...tal Reset Line When using the SW and SR commands the read and write cycle timing diagrams are important See Figure 51 for these timing cycles The SRn r and SWn r are the read and write commands used to specify slot address and register number For ex ample to read the contents of register 6 from an assembly in slot 1 send SR1 6 When a card is addressed the SLOT ENABLE line goes true The register nu...
Страница 285: ... lnput Voltage Low Level lnput Voltage High Level lnput Current Low Level lnput Current Short Curcuit Output Current Operating Temperature With other power Symbol WTDH RDDH WTDL RDDL tRDW tWTW tasu tah tddw tdsu tdhr tacc vcc IOH IOL VOH VOL ICC VIH VIL IIH IIL 10s TA D I G W R T t W T W ii t a s u tah i b SLOT ENABLE 7 i i BAO 8 A 1 BA2 x t d d a i tdhW C_ Only one output may be shorted at a time...
Страница 286: ...on the UNO UN3 channel address lines in a BCD code Example Execution of AC5 causes the following bit pattern t o appear UN3 UN2 UN1 UNO Allows four channels t o be closed simultaneously Each channel must be in a different decade See Latch Mode discussion Causes the 3497A to go to the channel specified by n 0 9991 close the channel and trigger the internal voltmeter when VM is present n 0 OFF n 1 O...
Страница 287: ... closed channel has been opened The MAKE line is pulled low to inform the mainframe that a channel close command was detected and that the closing operation is in progress The mainframe waits for the line to be released before proceeding with the next operation This is important for relays because it prevents the mainframe from proceeding with operations faster that the relays can react Figure 52 ...
Страница 288: ... m 1 BCO 0 1 1 f10 t b r e a k i t o p e n J J i OFF ON h I t c l o s e t m a t e t o p e n jt c l o s e OFF ON p fl OFF I topen time required to open a channel if closed tclose time required to close a channel tbreak tmake I 10 pS Figure 52 Option 140 BBM Synchronization Typical Scan Sequence Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 289: ... mj UNITS I BCD j j of t o p e n t OFF j BREAK j ON j t c l o s e P t c l o s e f OFF j MAKE j ON j I OFF i LATCH I ON 44432 3 5 tclose time needed to close a channel topen time needed to open a channel Figure 53 Option 140 Latch Mode Typical Scan Sequence Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 290: ...s commands are identical for HP IB or Serial Data operation When a com mand has different interpretations for HP IB or Serial Data the command is shown twice Three commands SC SL and SR are unique to Serial Data The format for a typical entry in COMMAND DESCRIPTIONS follows If a symbol appears in the upper right hand corner of the command box the information for that command applies only to HP IB ...
Страница 291: ...AC3 Close channel 3 HP IB 2 0 OUTPUT 10 AC3 l3 23 33 Close channels 3 13 23 and 3 3 Serial Data Notes 1 Up to 4 channels ltdecade may be closed sirnultaneously 2 AC command opens all previously closed channels 3 AC without chan opens all channels 4 Power On State Analog Close disabled Examples are typical BASIC language statements for HP IB or Serial Data operation as applicable state for the comm...
Страница 292: ...alog Output A01 No outputs Analog Reset AR AR Once at power on Analog Step AS Disabled Analog Viewed Channel AV Disabled COUNTER COMMANDS Counter Enable Interrupts CE slot n Disabled Counter Function CF slot n Disabled Counter Read CR slot n Disabled Counter Set CS slot n Disabled Counter Trigger CT slot n Disabled Digital Close Digital lntr Enable Digital lntr Status Digital Load Digital Open Dig...
Страница 293: ...nd set to 0 TE Disabled TI Disabled TO Disabled Time Elapsed Cntl Time Elapsed Read Time Interval Time Output I VOLTMETER COMMANDS I Voltmeter Autozero Voltmeter Current Source Voltmeter Display Voltmeter Format Voltmeter No RdgstTrig Voltmeter Range Voltmeter Storage Voltmeter Trigger Voltmeter Wait VA I VCO VD5 VF 1 VN1 VR5 vso VT 1 VWO Autozero ON Current Source OFF 5 digit display ASCII output...
Страница 294: ...rement port on the rear panel of the 3497A In AE2 Fast Scan the 3497A will ignore multiframe two 3497As Break Before Make BBM synchronization but BBM synchronization between channels in analog assemblies continues In AEI or AE2 each external pulse input to the EXT INCR port increments channel closed to next channel for analog assemblies Op tions 010 020 070 and 071 However approximately 100 to 200...
Страница 295: ...Fn command see VOLTMETER TRIGGER command Used to control analog assemblies Options 010 020 0 7 0 and 071 Examples 1 0 OUTPUT 709 A11 5 Voltage measurement on channel 15 IHP 18 2 0 OUTPUT 10 A13 Voltage measurement on channel 3 Serial Data Note 1 Power On State Analog Input disabled ANALOG LAST CHANNEL Description Selects last channel to be closed in a scan sequence but does not close the channel s...
Страница 296: ...ts of 0 01 of value range However the output can only change in increments of 0 025 of range Some selected integers and associated voltage and current levels are shown Value I Vyy4C I IDAC 4 20mA Integer mA IDAC 0 20mA mA Examples 1 0 OUTPUT 709 A015 0 2500 Outputs 2 5V on channel 0 of a VDAC in slot 15 HP I81 2 0 OUTPUT 10 AO 15 1 160r Outputs 4 256 rnA on channel 1 of an IDAC in slot 15 if assem...
Страница 297: ...next analog channel between the limits set by the AF and AL commands see ANALOG FIRST CHANNEL and ANALOG LAST CHANNEL commands Repeating the AS command causes channels to sequence from AF to AL and then to repeat the sequence starting at AF i e for AF3O and AL40 sequence is 30 31 40 30 3l Examples R 1 0 OUTPUT 709 AR Causes the 3497A to close channel 000 since AF was not specified HP 18 20 OUTPUT ...
Страница 298: ... to send an interrupt signal to the 3497A when a measurement com plete condition occurs HP IB 2 0 OUTPUT 10 SE102CE3 2 SE102 sets the interrupt mask in the 3497A to respond to a digital interrupt CE3 2 enables a counter in slot 3 to send an interrupt signal to the 3497A when an overflow condition occurs Serial Data Notes 1 Counter cards in the 3498A Extender cannot directly interrupt the controlle...
Страница 299: ...Period Range Pulse Width Range Average 1 0 0 0 10Hz to 100kHz 1 0 psec to 0 1 sec Periods1P W Average 1 0 0 1Hz to 100kHz 1 0 psec to 1 0 sec Periods1P W Measure 1 O1Hz to 100kHz 1 0 psec to 100 sec Period1P W Measure 1 1O H Zto I kHz 001 sec to 1o4sec Period1P W Examples 1 0 OUTPUT 709 CT2 1 CF2 1 Sets a counter in slot 2 to average 1000 periods of an input signal since CT2 1 was sent HP 16 20 OU...
Страница 300: ...n over the HP IB between the 3497A and the controller is halted until the measurement is complete Read With Wait Continuously in 3 For count up and count down functions the counter repeatedly obtains readings and continuously updates For periodlpulse width measurements complete measurement cycles initiate wait answer are repeatedly performed In this mode the 3497A is NOT free to perform any other ...
Страница 301: ...T 10 CS2 1000CF2 2 A counter in slot 2 starts the count down operation from a start point of 1000 If the counter is properly configured 500 square wave pulses are also output from the counter Serial Data 1 In count down to output square wave pulses the value must be an even integer from 0 to 999998 and input signal frequency must be 2 kHz or less 2 When a CS command is sent to the counter the coun...
Страница 302: ...Period Average 1000 Pulse Widths Average 100 Pulse Widths Measure 1 Pulse Width Measure 1 Pulse Width Average 1000 Pulse Widths Average 100 Pulse Widths Measure 1 Pulse Width Measure 1 Pulse Width Examples 1 0 OUTPUT 709 CTO l CF0 1 Sets a counter in slot 0 to average 100 periods of the input and trigger from rising edge to rising edge HP IB 20 OUTPUT 10 CT0 3CF0 5 Sets a counter in slot 0 to meas...
Страница 303: ...cts channel 5 relay Normal Open position to common For an Option 115 assembly in slot 2 DC command closes relay in channel 5 HP IB 2 0 OUTPUT 10 DC3 5 6 7 For an Option 110 assembly in slot 3 connects channel 5 6 and 7 relays Normal Open position to common For an Option 115 assembly in slot 3 DC closes relays in channels 5 6 and 7 Serial Data Notes 1 Channels not specified in the DC command remain...
Страница 304: ...o the 3497A a new DE command is required to re enable the interrupt capability of the assembly 3 Unless the 3497A has been previously enabled to send an SRQ or BREAK to the controller by an SE2 or SE102 command interrupts from the Option 0 5 0 assembly will not interrupt the controller 4 Power On State digital interrupt enable is disabled DIGITAL INTERRUPT STATUS Description Dl is used with the di...
Страница 305: ...s the same information as Digital Read command except that only one reading is produced for each command DIGITAL OPEN DO slot chan chan slot 0 to 89 chan 0 to 15 Option 110 0 to 7 Option 115 Description For the actuatorldigital output assembly Option I I O DO connects the Normal Closed position of the channel relay s addressed to common For the high voltage actuator Option 115 DO opens the relay s...
Страница 306: ...mand Serial Data Notes 1 For HP 18 Digital Read returns the same information as Digital Load command except that readings are continuously updated for Digital Read 2 For Serial Data with SO0 in effect Digital Read returns continuously updated readin gs With SO1 in effect one reading is returned per DR command 3 The Option 0 5 0 assembly can be reconfigured so that the value returned 0 to 177777 in...
Страница 307: ... channel s1 specified Channels are set by the octal value sent In contrast to DC or DO the DW command affects all channels simultaneously while DC and DO affect only the channels specified in the command Examples 1 0 OUTPUT 709 DW2 40 For an Option 110 assembly in slot 2 DW command connects channel 5 relay Normal Open position to common and connects the other 15 relay Normal Closed relay positions...
Страница 308: ...its effect is the same as pressing the front panel RESET key The 3497A actions following an SC command are 1 All command execution is terminated 2 All data transmission stops 3 All analog and digital channels are opened 4 The interrupt mask and status registers are cleared 5 Initializes all analog and digital assemblies 6 Sets the DVM for internal trigger VTI 7 Sets first analog channel 000 and la...
Страница 309: ...er reading rates SYSTEM VIEW command to affect the data display Examples to allow onlv data 1 0 OUTPUT 709 SDO Turns off display for faster reading rates HP IB 20 OUTPUT 10 SD1 Turns display on Serial Data Note 1 Power On State SD1 Display ON tered with Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 310: ...tches a preset time Digital Interrupt use to send interrupt to controller when a digital input or counter assembly interrupts Data Ready SRQ use when any of three actions completed 1 voltmeter reading complete single trigger 2 n voltmeter readings complete when VNn and VS1 or VS2 commands used 3 DR DL Dl CR or TD commands have been executed Example 10 OUTPUT 709 SE12 Sets the SRQ mask for time int...
Страница 311: ...ecuted allow interrupt when one of eight conditions occurs which causes message not to be executed Time Interval used to interrupt when a specified time interval has occurred Time Alarm use to interrupt when the time of day matches a preset time Digital Interrupt use to send interrupt to controller when a digital input or counter assembly interrupts Inputl0utput Error use when parity overrun or fr...
Страница 312: ...tal assemblies 20 OUTPUT 10 SI Initialize DVM and digital assemblies Serial Data Notes 1 A 3 msec wait is included to allow actuator relays to open Option 115 or to connect the NC position to common Option 110 2 Power On State SI for one system initialization SYSTEM LOCK Serial Data SLO keyboard enabled SL1 keyboard disabled I Description System Lock is used to disable the front panel keys so that...
Страница 313: ... 1 Any device dependent OUTPUT command will abort the present wait and existing measurement will be lost but will not change the SO mode set 2 Power On State SOO No system wait S Y S T E M S I N G L E I C O N T I N U O U S OUTPUT serial Data SO0 Continuous output to controller SO1 Single output command to controller Description SO1 enables the 3497A to send a single readinglcomrnand for commands w...
Страница 314: ...SR slot n specifies condition of register n in slot addressed Assembly I 0ption s Option 140 returns 0 to 377 octal depending on register true bits 0 Digital Input 1 Actuator or HV Actuator 2 DIA Converter 3 Counter 7 Empty or Analog Assembly Examples 050 110 115 120 130 0 6 0 010 020 070 07 1 1 0 OUTPUT 709 SR3 O Requests identity of assembly in slot 3 If for example 000363 octal is returned the ...
Страница 315: ...not connected Data Carrier Detect RS 232C Receiver Ready RS 449 No or Lost Carrier after 2 0 seconds Clear to Send ICTS Data Set Ready RS 232Cl Data Mode RS 4491 System overrun if a command is received when the 3497A is executing a previous command Buffer overflow if command string exceeds 4 2 characters Manual service request for front panel SRQ Service request Shows BREAK due to interrupt Power ...
Страница 316: ...s data to the 6 digit display on the 3497A if the display has previously been turned off by the SDO command Examples 1 0 OUTPUT 709 SDOSV23 6700 Turns front panel display off then displays 23 6700 on the 6 digit display HP IB 20 OUTPUT 10 SDOSV 23 6700 Turns front panel display off then displays 23 6700 on the 6 digit display Serial Data Notes 1 A decimal point may be placed after the V in the com...
Страница 317: ...he 3497A timer If the SRQ mask interrupt mask for Serial Data has been previously set for time alarm the 3497A sends an interrupt to the controller when the time set by the TA command matches the 3497A real time clock time Examples 1 0 OUTPUT 709 SE4TA180000 SE4 enables SRQ mask time alarm so SRQ will be sent at 6 00 00 PM 24 hour clock HP IB 2 0 OUTPUT 10 SEl 04TA18000 SE104 enables interrupt mas...
Страница 318: ...t the appropriate date i e Feb 28 to Mar I except for leap year so clock must be adjusted on Feb 29 4 Programming a date 31 causes a BEEP and the clock to remain unchanged 5 Power On State TD0101000000 Set clock to Jan 1 000000 TlME OF DAY READ Description 3ead time of day from the 3497A real time clock Data received after the TD command has the format MM DD HH MM SS Option 230 or DD MM HH MM SS O...
Страница 319: ...3 0 DlSP A 4 0 END Note 1 Power On State TEI Time Elapsed timer halted and set to zero TIME ELAPSED READ Description Use time elapsed read TE to read time in one second increments since the elapsed timer was started by the TE2 command Data returned after the TE command has the format DDDDDD seconds Examples 1 0 OUTPUT 709 TE2 20 5 0 60 OUTPUT 709 TE 7 0 ENTER 709 A 8 0 DlSP 9 0 END 1 0 OUTPUT 10 T...
Страница 320: ...uired in Tln command i e for 2 minutes only TI200 rather than TI000200 is required 2 When TI command sent pulses are available at TIMER port even if SRQ is not enabled 3 Maximum period for TI command is 24 hours 4 Send TIO t o disable the time interval function 5 Power On State Time Interval disabled TlME OUTPUT Description Use the TO command to generate output pulses from the TIMER port with peri...
Страница 321: ... VAO Turns auto zero OFF Serial Data Note 1 Power On State VA1 auto zero ON VOLTMETER CURRENT SOURCE RANGE 0 OFF VC range range 0 to 3 1 1 0 p A 2 100pA 3 1 m A Description Programs the output of the current source in the voltmeter to one of three values 10 pA 100 pA or 1 mA The current source is used in combination with the voltmeter for 4 wire resistance measurements Examples 10 OUTPUT 709 VC2 S...
Страница 322: ...ply readings shown by 516 Examples VDn VD3 VD4 VD5 1 0 OUTPUT 709 VD3 Sets voltmeter for 3 digit display and 0 01 PLC integration Maximum reading speed 300 readings1 second with auto zero OFF HP IB 2 0 OUTPUT 10 VD3 See HP IB example Serial Data Notes Digits 3 4 5 1 Resolution and noise rejection are higher but reading speed is lower for 5 digit display than for 3 digit display 2 Power On State VD...
Страница 323: ...ER NUMBER READINGSITRIGGER Each reading is output as time of day string CR LF voltage ASCII analog channel number ASCII of last voltage reading For multiple readings as set by VN command time of day is sent only with each new trigger rather than with each reading and CR LF is sent after the last channel Description Sets number of readings taken per trigger pulse Readings are taken sequentially and...
Страница 324: ...7A rather than being sent across the interface Use the VS command without a number to output the stored readings starting with the first reading The storage capacity of the 3497A storage buffer is HP IB Serial Data 5 0 ASCll Examples 10 OUTPUT 709 VN6OVSlVTZ VN60 sets the DVM to take 60 readings1 trigger V S I sets the DVM t o store the 60 readings in ASCll format and VT2 sets the DVM for external...
Страница 325: ...inuous output when SO0 in effect 2 Power On State VTI Internal Trigger Trigger signal is generated externally and input through the EXT TRIG port The number of readingsltrigger is set by VNn If a trigger pulse arrives while the 3497A is making a measurement the trigger will be ignored I I SOFTWARE VOLTMETER WAIT Causes the voltmeter to trigger and take the number of readings set by the VNn command...
Страница 326: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 327: ...install the 3497A in bench or rack mount installation or as part of a 3054A 3054C or 3054DL system 0 HP IB INSTALLATION shows how to connect the 3497A to an HP IB system and how to check the instrument for proper operation when connected to a controller also before you connect the instrument to your system 0 RS232C INSTALLATION shows how to connect the 3497A to an RS232C Serial Data system and how...
Страница 328: ...cessories or if the 3497A does not pass the electrical performance tests specified in the 3497A Mainframe Installation and Service Manual hp part number 03497 90020 which accompanies the instrument notify your nearest Hewlett Packard Sales and Service Office A list of these offices is at the back of this manual If the shipping container is damaged or the cushioning material shows signs of stress n...
Страница 329: ...tion 232 RS232C or RS4491423 Same as standard except delete HP IB interface and add RS232C CCITT V 24 RS423 CCITT V 10 inter face Includes 13222N 13222 60001 U S MODEM cable 3497A with Option 232 and Option 001 Same as Option 232 plus a 5 digit DVM with current source installed in 3497A 3497A with Option 260 delete front panel Checking Same as standard or Option 232 except front panel keyboard and...
Страница 330: ...lation However because of potentially high voltages up to 357 volts peak on the rear panel this cover MUST be in place whenever the 3497A is connected to an external system To check your 3497A configuration refer to Figure 55 or 56 and follow the se quence shown Figure 55 shows a standard HP IB 3497A and Figure 56 a 3497A with Option 232 RS232ClRS423 DON T PLUG THE 3497A INTO AN AC LINE UN TIL YOU...
Страница 331: ...Installation and Mainframe Configuration 325 Figure 54 3497A Front and Rear Views Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 332: ...326 Installation and Mainframe Configuration Figure 55 Standard HP IBI 3497A Front and Rear Panels 0 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 333: ...Installation and Mainframe Configuration 327 Figure 56 3497A with Option 232 Front and Rear Panels Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 334: ...er for the frequency option 50 Hz or 6 0 Hz marked To verify that the Line Voltage Selector Switches are in the correct position for the power option specified open the front panel on the 3497A by loosening the screw at the right side and swinging the panel open Then refer to Figure 57 which shows the location of the Line Voltage Selector Switches and the settings for each of the four power option...
Страница 335: ...plug in assemblies Component replacement must be made by qualified service trained personnel who are aware of the hazards involved Do not operate the instrument in the presence of flammable gases or fumes and do not expose the 3497A or 3498A to rain or moisture Warnings or cautions precede any potentially dangerous procedures throughout this manual Instructions contained in the warnings and cautio...
Страница 336: ...e 3497A is operating properly If the 3497A does not pass the self test DO NOT CONNECT IT TO YOUR CONTROLLER OR TO YOUR SYSTEM Refer to the 3497A Mainframe Installation and Service Manual for information After you have verified that the line voltage volt amps and frequency are correct for your 3497A connect the power cord to the 3497A and plug the cord into your AC line see Figure 55 or 56 for powe...
Страница 337: ... panel has only the LINE switch and a power ON in dicator light For Option 2 6 0 versions the turn on sequence is limited to pressing the LINE switch ON and noting that the power ON indicator lights Turn the 3497A on by pressing the LlNE switch ON see Figure 55 or 56 for loca tion and carefully observe the 6 digit display on the front panel as it cycles through sequences a through el as shown Sinc...
Страница 338: ...he DVM Option When the 3497A passes the power on test do the self test by pressing the SELF TEST key ON see Figure 55 or 56 or location of the SELF TEST key At the com pletion of the self test the display should be as shown in Figure 59 If the self test fails the 3497A will display an error message and should not be used until it is repaired by a service trained person After you press the SELF TES...
Страница 339: ...Installation and Mainframe Configuration 333 Figure 59 Self Test Display Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 340: ... also be operated within an ambient temperature range of O C to 55OC 32OF to 131O F but with reduced accuracy 3497Al3498A ENVIRONMENTAL REQUIREMENTS Warm Up Time Operating Temperature Non Operating Temperature Humidity Shock Vibration Operating Power 1 Hour O C to 55OC 40 C to 75OC To 95 except as noted in Specifications 30 G 11 msec sine wave on each of six sides 10 Hz to 55 Hz at 010 inch peak t...
Страница 341: ...ng kits order hp SYSTEM I 1 Rack Mounting Kits Accessories Manual hp part number 5952 0095 which is available from your nearest hp Sales and Service Office Installing Plug In Assemblies To install plug in assemblies Options 0 1 0 through 140 in the 3497A or the 3498A select the slot desired for the assembly and insert the assembly as shown in Figure 6 0 which depicts a sample installation for the ...
Страница 342: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...
