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B-8

BOP-1K 080709

FIGURE B-4. SETTING LIMITS

B.21 [SOURce:]CURRent[:LEVel]:LIMit:NEG COMMAND

CURR:LIM:NEG

Syntax:

Short Form: [SOUR:]CURR[:LEV]:LIM:NEG <value>
Long Form: [SOURce:]CURRent[:LEVel]:LIMit:NEGative <value>

Description: Establishes the negative software limit <value> for output current, i.e., sets the maximum value of out-

put current that the unit will be allowed to source (quadrant 3, Figure 1-3) or sink (quadrant 2) to the
value specified by the user. Requires MEM:UPD (PAR. B.12) to save for power up. See PAR. 3.5.2.2
and Figure 3-16 for special programming considerations.

B.22 [SOURce:]CURRent[:LEVel]:LIMit:NEG? QUERY

CURR:LIM:NEG?

Syntax:

Short Form: [SOUR:]CURR[:LEV]:LIM:NEG?
Long Form: [SOURce:]CURRent[:LEVel]:LIMit:NEGative?
Returns <value>

Description: Identifies the negative software limit value of output current that the unit can source (quadrant 3, Fig-

ure 1-3) or sink (quadrant 2).

NOTES: 1. This example assumes a BOP 36-28MG power supply is operating in constant current (CC)

mode.

2 Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for pro-

gramming techniques to optimize performance.

CURR:LIM?

Returns 28,28 (positive and negative defaults for max
current in current mode).

CURR:LIMIT:POS 10;NEG 2

Establishes the maximum positive and negative current values
that can be set in current mode.

func:mode volt

Sets power supply in voltage mode.

volt 15;curr 2

Allows the power supply to provide 15 volts positive with the
ability to source or sink up to 2 amperes. The display shows:
15.000 2.000 2.000.

CURR 10

Since the BOP is operating in voltage mode, sets the current
capability (current protect) to 10 amperes.The display shows:
15.000 10.000 10.000

curr:prot?

Returns 10,10

CURR:prot:neg 1

Limits the negative current capability to 1 ampere.

CURR:PROT:LIM:NEG 5

Prevents CURR:PROT:NEG setting from exceeding
5 amperes

curr:prot?

Returns 10,1 (the actual positive (10) and negative (1)
protection levels for the current.

---- Turn BOP POWER off and then on.
curr:lim?

Returns 28,28 the factory default levels (all the above
changes have been lost). To lock in the changed limits, the user
must send :MEMORY:UPDATE LIMITS.

CURR:PROT:LIM:POS 28.3;neg 28

Establishes new max current protect limits (positive 28.3 and
negative 28.

CURR 28

Establishes the positive protect to be 28 amperes and the
negative protection remains 28 amperes.

curr:prot?

returns 28,28

func:mode curr

Changes the mode of operation of the power supply to current
mode.

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Содержание BOP 1000W

Страница 1: ...MODEL OPERATOR S MANUAL ORDER NO REV NO KEPCO INC An ISO 9001 Company BOP 1000W HIGH POWER BIPOLAR POWER SUPPLY BOP 1000W POWER SUPPLY...

Страница 2: ......

Страница 3: ...3 23 EEC LVD 93 68 EEC CE mark Standard to which Conformity is declared EN61010 1 1993 Safety requirements for electrical equipment for measurement control and laboratory use Manufacturer s Name and A...

Страница 4: ...This power supply is designed for stationary installation with mains power applied via a detachable power supply cord or via direct wiring to the source power terminal block 3 This power supply is con...

Страница 5: ...2 Grounding This product is a Class 1 device which utilizes protective earthing to ensure operator safety There are no operator serviceable parts or adjustments within the product enclosure Refer all...

Страница 6: ...onents or adjustments inside the unit High voltage components inside the unit can cause serious injury even with input power disconnected Service must be referred to authorized personnel Using the pow...

Страница 7: ...by an electronic load This prevents damage to the load and power supply as well as providing safety for the user How ever In addition to the built in safety features constant current type ac tive elec...

Страница 8: ...nd connection 2 8 CAUTION The rack must provide support at the rear within 6 inches of the rear pan el Optional slides can also be used see PAR 2 4 2 2 8 CAUTION When working with active loads the vol...

Страница 9: ...t expected from the load 3 25 CAUTION Before Pressing to enter the Saved Waveform Screen from the power up screen perform the following steps to avoid unexpected voltages or currents from previous set...

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Страница 11: ...Waveforms 1 14 1 6 4 Saving and Recalling Settings 1 14 1 6 5 External Reference Analog Control 1 14 1 6 6 External Limits 1 14 1 6 7 User defined Voltage Current Maximum Values Software Limits 1 14 1...

Страница 12: ...3 11 3 3 1 Setting Local Mode 3 11 3 3 1 1 Keypad Lockout 3 11 3 3 1 2 Local Password Protection at Power up 3 11 3 3 2 Setting Voltage or Current Mode 3 11 3 3 3 Programming Voltage or Current and A...

Страница 13: ...5 3 1 1 Changing the GPIB Address 3 44 3 5 3 1 2 Configure Device Clear DCL Control 3 44 3 5 3 1 3 Determining Whether RST Command sets the Output Off or On 3 45 3 5 3 2 RS 232 Serial Port Setup 3 45...

Страница 14: ...ibration using Remote SCPI commands via GPIB or RS 232 Interface 4 4 4 3 1 Calibration Procedure using SCPI Commands 4 5 4 4 Calibration Using Front Panel Keypad in Local Mode 4 10 4 4 1 Understanding...

Страница 15: ...B 9 B 27 SOURce CURRent LEVel PROTect BOTH Command B 9 B 28 SOURce CURRent LEVel PROTect BOTH Query B 10 B 29 SOURce CURRent LEVel PROTect MODE Command B 10 B 30 SOURce CURRent LEVel PROTect MODE Quer...

Страница 16: ...ediate AMPlitude Command B 24 B 85 SOURce VOLTage LEVel IMMediate AMPlitude Query B 24 B 86 SOURce VOLTage LEVel LIMit BOTH Command B 24 B 87 SOURce VOLTage LEVel LIMit BOTH Query B 24 B 88 SOURce VOL...

Страница 17: ...36 SYSTem PASSword CDISable Command B 33 B 137 SYSTem PASSword NEW Command B 33 B 138 SYSTem PASSword STATe Query B 33 B 139 SYSTem REMote Command B 33 B 140 SYSTem REMote Query B 33 B 141 SYSTem SECu...

Страница 18: ...7 Series Configuration Remote Sensing Typical 2 18 2 8 Typical Master Slave Protection Interconnections 2 19 2 9 Master Power Up Screen 2 21 2 10 Power On Default Screen for Master Unit 2 22 2 11 Powe...

Страница 19: ...l Out Port Pin Assignments 2 4 2 7 Parallel Serial Control In Port Pin Assignments 2 4 2 8 Parallel Serial Protect In Port Pin Assignments 2 5 2 9 Parallel Serial Protect Out Port Pin Assignments 2 5...

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Страница 21: ...t switching to provide true voltage and current These BOP power supplies use switch mode technology for low dissipation A bi directional isolating a c input power factor correcting PFC circuit recuper...

Страница 22: ...urrent 176 Va c 9 5A maximum 264 Va c 6 4A maximum Power factor Source 0 99 minimum nominal output power Sink 0 97 minimum Efficiency 65 minimum when sourcing Switching frequency 70 KHz PFC Stage EMC...

Страница 23: ...ge load effect 0 1 of rating 0 100 load current time effect drift 0 02 of rating 0 5 through 8 hours temperature effect 0 02 deg C of rating 0 to 50 deg C ripple and noise 2 E0max p p Includes switchi...

Страница 24: ...impedance of this signal is 2K Ohms External Protection Port see Table 2 4 External Shutdown Isolated input for shutdown of the BOP latched status Pulse width 100 microseconds min Action delay 100 mic...

Страница 25: ...plete or if execution is stopped using the output of the unit is set to OFF Standby indicator lit Output must be enabled press STANDBY to execute the waveform again Remote When the count is complete o...

Страница 26: ...ime resolution increment 0 751usec Skip feature a number of steps can be skipped from the LIST at the first run using LIST COUN SKIP Able to synchronize a LIST command with multiple BOP s or other dev...

Страница 27: ...olar Volts 0 to EONOM Offset Voltage Volts EONOM to EONOM Applies to offset of sine triangle ramp and square waveforms and to Level waveform Amplitude Current Amperes IONOM to IONOM Amplitude Resoluti...

Страница 28: ...xternal or Lesser Limit Limit channel Main Amplitude Internal 0 to EONOM or IONOM internal or external Main Channel Voltage Volts for Voltage mode Current Amperes for Current mode Protection Limit Amp...

Страница 29: ...DEFAULT Admin1 A Admin2 KEPCO Protection Choices Unprotected Main Admin1 Admin2 Password menu always protected by Admin2 Items Protected Interface max min Load type Test Calibration Power up Keypad l...

Страница 30: ...led for local sensing and ground network connected Analog I O control port 15 pin D female See Figure 2 1 Table 2 10 PAR SER CTRL IN port 8 pin mini DIN connector See Figure 2 1 Table 2 7 PAR SER CTRL...

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Страница 33: ...and current etc see PAR 3 3 for details on local control Context sensitive help screens are available by pressing the HELP key Actual output voltage and current displays are available while the help...

Страница 34: ...veform type frequency peak to peak amplitude offset and start and stop phase angle are then assigned by the user Segments at the beginning of the waveform can be programmed to be executed only once or...

Страница 35: ...gy dissipation the BOP employs energy recuperation where energy sinked from an active load is passed backwards through the output circuit and the bidirectional input power factor correcting circuit to...

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Страница 37: ...urrent capability e g connecting two BOP 10 75MG models in parallel to produce a virtual BOP 10 150MG KIT 219 0449 2 in parallel KIT 219 0446 3 in parallel KIT 219 0447 4 in parallel KIT 219 0448 5 in...

Страница 38: ...k see Figure 1 2 Model CS 04 includes slides brackets all mounting hardware and installation instructions CS 04 Heat Sink Provides adequate cooling for calibration sense resistors 136 0451 TABLE 1 5 A...

Страница 39: ...eful unpacking inspect for shipping damage before attempting to operate Perform the preliminary operational check as outlined in PAR 2 3 If any indication of damage is found file an immediate claim wi...

Страница 40: ...interface for analog input output signals See Table 2 10 5 PARALLEL SERIAL CONTROL PORT connectors A2A5J3 IN and A2A5J4 OUT Provides interconnections used to control parallel or serial configurations...

Страница 41: ...sistor to first last unit on the daisy chain TABLE 2 3 TRIGGER PORT PIN ASSIGNMENTS CONNECTOR PIN SIGNAL NAME FUNCTION TRIGGER PORT connector A1J3 1 LOGIC GND Return for TRIGGER and SHUTDOWN signals 2...

Страница 42: ...ound 6 CTS Clear To Send protocol not used TABLE 2 6 PARALLEL SERIAL CONTROL OUT PORT PIN ASSIGNMENTS CONNECTOR PIN SIGNAL NAME FUNCTION PARALLEL SERIAL CONTROL OUT PORT A2A5J4 1 SGND Local signal gro...

Страница 43: ...tor emitter is connected to PAR ALLEL SERIAL PROTECT OUT PORT A2A5J2 pin 2 see Table 2 9 When unit is operating normally transistor is saturated Transistors from all units of the parallel or series co...

Страница 44: ...pin grounded current mode logic 1 or pin not connected the default voltage mode see PAR 3 4 2 3 IOUT_DMM Output analog signal through 2K ohm resistor referenced to pin 4 for monitoring overall output...

Страница 45: ...ed during the internal self test As each test is completed PASS or FAIL is displayed If all tests pass the unit goes into the default mode If a failure occurs the failure is displayed Figure 3 3 shows...

Страница 46: ...ION THE RACK MUST PROVIDE SUPPORT AT THE REAR WITHIN 6 INCHES OF THE REAR PANEL OPTIONAL SLIDES CAN ALSO BE USED SEE PAR 2 4 2 2 4 2 SLIDE INSTALLATION Optional slides are available for rack mounting...

Страница 47: ...its selection requires a combination of analysis good judgement and some amount of empirical testing If there is a choice in selecting either the OUTPUT or COMMON output termi nals of the power suppl...

Страница 48: ...the power supply although the error sensing connection to the load compensates for the d c voltage drop in the power leads it cannot compensate for the undesirable output effects of the power lead ind...

Страница 49: ...nnection see Figure 2 3 Note 2 2 6 COOLING The power devices used within the power supply are maintained within their operating tempera ture range by means of internal heat sink assemblies and by two...

Страница 50: ...FIGURE 2 2 LOAD CONNECTIONS LOCAL SENSING...

Страница 51: ...SCPI programming is described in PAR 3 6 Appendices A and B provide syntax for SCPI com mon and subsystem commands and queries implemented in this unit All the features described for Local Mode operat...

Страница 52: ...2 configurations to allow the user CAUTION FOR PARALLEL CONFIGURATIONS REMOVE LINKS BETWEEN COM S AND COM OUT TERMINALS OF ALL SLAVES TO PREVENT DAMAGE TO THE UNIT AND MAINTAIN SYSTEM ACCURACY The fo...

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Страница 58: ...le output voltage and current see NOTE below MASTER 3 X 2 Unit configured as master in control of two parallel branches comprised of three series connected units Used when units are connected in paral...

Страница 59: ...Units menu by pressing to save the settings for subsequent power up cycles The display shows the master power up screen see Figure 2 9 e Turn off power to the master then turn on power to the master...

Страница 60: ...roubleshooting 4 Adjust the limits to reflect the increased power capacity of the multiple unit combination as follows TABLE 2 13 SLAVE STATUS MESSAGE DEFINITIONS Slave Status Message Displayed on Mas...

Страница 61: ...FIGURE 2 11 POWER ON DEFAULT SCREEN FOR SLAVE UNIT 2 8 4 OPERATING INSTRUCTIONS FOR MULTIPLE UNIT COMBINATIONS...

Страница 62: ...en prompted enter ADMIN2 password see PAR 3 2 4 4 before continuing 5 Press to return to factory defaults This configures the unit as a standalone unit 6 Press to save for power up 7 Turn off power to...

Страница 63: ...080709 C 25 FIGURE 2 12 3 X 2 3 SERIES X 2 PARALLEL CONFIGURA TION LOCAL SENSING TYPICAL 2 25 2 26 Blank 24 25...

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Страница 65: ...e Ana log I O port to control the output see PAR 3 4 Digital remote see PAR 3 5 uses either the built in GPIB IEEE 488 see PAR 3 5 4 or RS 232 see PAR 3 5 6 interface to communicate with a remote comp...

Страница 66: ...ction is set to the nominal and voltage limit is set to maximum 4 Keypad Access all local functions see PAR 3 2 1 Figure 3 2 and Table 3 2 for details 5 FAULT indicator Lights when a fault is detected...

Страница 67: ...rating mode The operating mode is indicated at the upper right of the LCD Setting the unit to STANDBY when the mode is changed only occurs when using the MODE key R or T From the power up screen these...

Страница 68: ...FIGURE 3 3 POWER UP SCREEN SHOWING GRAPHIC METERS VOLTAGE 0000 0...

Страница 69: ...SAGES includ ing error messages STATUS includes whether the unit is under local or remote control and identifies the main and protect channels The protect channel will show either a single entry for b...

Страница 70: ...y be opened either directly by press ing the associated Function keys or by highlighting an item on the list and pressing the View Modify function key Menus and submenus will display a list of paramet...

Страница 71: ...d External and Controls calibration Power up Settings PAR 3 3 7 Mode Voltage Current Main channel reference Internal External Exter nal Reference Level protect channel type Internal External Lesser Li...

Страница 72: ...quired before the unit can be returned to local operation In addition when a waveform is exe cuting in local mode depressing to stop the waveform requires a password before the waveform is stopped To...

Страница 73: ...Press T to move to the next character and repeat step 1 for the next character of the pass word 3 Repeat steps 1 and 2 until the correct password is displayed then press to verify The protected settin...

Страница 74: ...om DISABLE to ENABLE GRAPHIC DISPLAY Meters 75s Graph 30s Graph 15s Graph 7 5s Graph 3 8s Graph 1 5s Graph 0 8s Graph 0 5s Graph 0 3s Graph 0 15s Graph 0 04s Graph 0 08s Graph METERS Output voltage an...

Страница 75: ...ere is no correla tion between voltage and current graphs For the best graphical representation choose the graph time that is closest to but greater than the waveform time duration From the power up s...

Страница 76: ...e If necessary to change a setting use Y or U to highlight the parameter and press to modify Highlight the desired selection and press to save then press to save for power up or to exit If analog prog...

Страница 77: ...current a single value applies to both the positive and negative limits only one value is displayed and can be edited for both protection limits TABLE 3 4 VOLTAGE AND CURRENT PARAMETER DEFINITIONS Ter...

Страница 78: ...g for Voltage Protect Values of Volt age Protect between Voltage Protect Min and Voltage Protect Max near zero are not allowed This zone also referred to as the minimum box is automatically calculated...

Страница 79: ...ar does not immediately change the protect limit values it changes how the protect settings are displayed and set from the power up screen So if maximum minimum pro tection limits were set to differen...

Страница 80: ...m limits The system limits are always in effect even when the unit is controlled by an external reference If system limits are changed the protection limits must be changed to correspond to the new sy...

Страница 81: ...ct can be set to To modify refer to 3 3 4 1 V Protect Min internal value Not Adjustable Defines the minimum value that Voltage Protect can be set to This is a calcu lated value and is not adjustable f...

Страница 82: ...ITS The protection limits are software limits that establish the maximum and minimum maximum negative allowable levels of output voltage in current mode and current in voltage mode The default protect...

Страница 83: ...ons see Table 3 6 which determine how the power supply responds when the output is off ACTIVE RESISTIVE and BATTERY Load type CUS TOM not normally active permits customized settings to be implemented...

Страница 84: ...ut to ensure safety before handling BOP connections When connecting the battery the switch across the output should be opened after the connections are complete and then the switch in series with the...

Страница 85: ...see PAR 3 4 4 Represents the power up val ues for protection limit channels bipolar limits voltage for current mode and current for voltage mode Table 3 7 illustrates the relationship between Mode Ma...

Страница 86: ...nternal External or Lesser Limit Voltage 10 Current 25 Unit powers up in voltage mode 0V current protection determined by pins 5 and 13 see PAR 3 4 4 for External PAR 3 4 4 1 for Lesser Limit Pressing...

Страница 87: ...he appropriate pins of the Analog I O Input Port see Table 2 10 If the main channel is voltage the protection settings are deter mined by pin 5 negative current protection and pin 13 positive current...

Страница 88: ...ference applied to the Analog I O port pin 11 is used see PAR 3 4 3 1 EXTL REF LVL Allows the gain of the BOP to be established by the maximum output voltage or current introduced by the SETTING field...

Страница 89: ...nter the Save Recall menu 2 Use the U and Y keys to highlight the desired memory location When the desired location is highlighted press to view the detailed settings before execution or press to appl...

Страница 90: ...FIGURE 3 9 SAVED WAVEFORMS MENU 3 3 9 3 UNDERSTANDING HOW WAVEFORMS ARE GENERATED Waveform are generated by the BOP by producing a series of discrete output levels points in a...

Страница 91: ...z 90 5 6Hz 8 3Hz 1280 118 4Hz 147 9Hz 72 8 4Hz 11 0Hz 960 148Hz 177 4Hz 60 11 1Hz 14 7Hz 720 177 5Hz 221 8Hz 48 14 8Hz 22 1Hz 480 221 9Hz 295 8Hz 36 22 2Hz 33 2Hz 320 295 81Hz 354 9Hz 30 33 3Hz 44 3Hz...

Страница 92: ...eat for a segment use Y or U or the encoder to highlight the segment then press Initial Repeat is not available for the last seg ment since the last segment must repeat Use use Y or U to highlight the...

Страница 93: ...evel Square Square wave bipolar starts with positive excursion see Note 1 Pos Ramp Increasing ramp bipolar see Note 1 Neg Ramp Decreasing ramp bipolar see Note 1 Triangle bipolar starts with positive...

Страница 94: ...details can then be modified as desired 3 3 9 8 CREATING A NEW WAVEFORM 1 After observing the precautions of PAR 3 3 9 1 press from the power up screen to enter the Saved Waveforms screen Figure 3 9 h...

Страница 95: ...out initial vs repeating segments Refer to PAR 3 3 9 9 for a detailed example of how to add segments to build a complex waveform 3 3 9 9 USING SEGMENTS TO BUILD A WAVEFORM The following steps provide...

Страница 96: ...From the Waveform Settings screen highlight segment LEVEL 0 002s 0 00 I and press to insert a new segment Use to modify the following settings of the new segment For each parameter use to save the se...

Страница 97: ...ut on then or press to return to the Saved Waveforms screen 3 3 9 10 COPYING A WAVEFORM After observing the precautions of PAR 3 3 9 1 press from the power up screen to enter the Saved Waveforms scree...

Страница 98: ...inadvertently F4 Invalid only works when labeled Key was probably press inadvertently Master Slave Menu Series or Parallel when not STANDALONE Mismatch between Unit type and Connection type Automatica...

Страница 99: ...nit in STANDBY status 3 4 1 1 REMOTE SHUTDOWN A standalone unit can be shut down using a remote signal applied to the PROTECTION EXT PORT as shown in Figure 3 12 or 3 13 A multiple unit configuration...

Страница 100: ...as shown in Figure 3 15 For multiple unit configurations this signal must be applied to the master When the signal is momentarily active short or logic 0 for a minimum of 100 microseconds the output...

Страница 101: ...0 YY 0 Displays rated output voltage and current of power supply including all slaves connected in parallel or series TEST DISPLAY Status see NOTE below Automatic test reports status messages see NOTE...

Страница 102: ...see PAR 3 4 3 1 The internal reference is ignored EXTL REF LVL Allows the gain of the BOP to be established by the maximum output voltage or current introduced in the main channel field see PAR 3 4 3...

Страница 103: ...tage to pin 11 that starts at zero and rises to 10V causes the output to rise from zero and reach 18V when the external reference reaches 5V The output stays at 18V while the reference increases from...

Страница 104: ...ge mode and voltage protect limit for current mode A voltage between 1V and 10V at the following pins referenced to Ground pin 12 will control the corresponding protection parameter between 10 of the...

Страница 105: ...truments SCPI provides a common language conforming to IEEE 488 2 for instruments used in an automatic test system see PAR 3 6 The control bus used must be either the IEEE 488 standard communication b...

Страница 106: ...the active parameter The active parameter is the parameter that controls the output e g voltage controls the output in voltage mode 3 Never program both the active and complementary limit parameter to...

Страница 107: ...ly address char status_byte status byte from the power supply define MAV 0x10 bit 4 of the status byte is the Message AVailable bit by 488 2 specification Function Send_with_wait INPUT string to be se...

Страница 108: ...ply the changes without saving for power up and exit TABLE 3 16 INTERFACE SETTINGS MENU SETTING CHOICES BOLD Factory Default FUNCTION Interface Data Format SCPI CIIL SCPI Standard Commands for Program...

Страница 109: ...nd exit TABLE 3 17 OPERATION OF RST COMMAND Load type when RST Issued see NOTE BOP Status After RST Issued Internal Front Panel Display Active or Resistive Load see PAR 3 3 6 Voltage mode Main Channel...

Страница 110: ...COMMUNICATION LANGUAGE Communication via GPIB port can be executed using either SCPI or CIIL protocols From the power up screen press highlight Interface Settings and press to enter the Interface men...

Страница 111: ...lity TABLE 3 19 IEEE 488 GPIB BUS COMMAND MODE MESSAGES MNEMONIC MESSAGE DESCRIPTION COMMENTS ATN Attention Received DAC Data accepted Received or Sent DAV Data Valid Received or Sent DCL Device Clear...

Страница 112: ...plies using a virtual front panel observed on a com puter monitor kp_appl c Although the software drivers supplied by Kepco are VISA compliant they also require the installation of the proper VISA dri...

Страница 113: ...een the com mand originator computer and the BOP power supply thus avoiding a more complex hand shake protocol When the BOP is in the RS 232 echo mode it returns all data sent to the host controller T...

Страница 114: ...resets the receive and transmit pointers and queues CAUTION When the serial port has received an XOFF the error message 400 QUE error will be placed in the queue to indicate the loss of transmitted i...

Страница 115: ...ands to affect the output can be exe cuted e g VOLT 10 OUTP ON This can be accomplished by sending SYST REM ON prior to sending any commands that affect the power supply output See PAR B 139 and Figur...

Страница 116: ...on regarding operating parameters power supply state status or error conditions 3 6 2 COMMON COMMANDS QUERIES Common commands and queries are defined by the IEEE 488 2 standard to perform overall powe...

Страница 117: ...eform centered on zero volts An optional offset can be added to the command to cause the BOP to generate a non centered waveform For example a 5 volt 400 Hertz sine wave may be centered at 3 volts The...

Страница 118: ...ONTinuous CALibrate subsystem CALibrate CEXTernal MAX ZERO CGAin MIN MAX CLIMit MAX ZERO CPRotect MIN MAX CURRent MIN MAX DATA val SAVE string STATe boolean password STATe ROOT colon SYSTem subsystem...

Страница 119: ...val AMPLitude MIN MAX TRIGgered AMPLitude val AMPLitude LIMit BOTH BOTH NEGative NEGative POSitive POSitive MODE FIXed LIST TRANsient EXTernal GAIN PROTect MODE PROTect BOTH BOTH MODE INT EXT LESS MO...

Страница 120: ...e the correct calibration access code password must be entered If the password has been forgotten call the factory and a secret password which has been assigned to your power supply will be provided D...

Страница 121: ...yword separated by a space the parameter is usually numeric e g CURR 5 newline but may also be a string e g OUTP ON newline Figure 3 19 illustrates the message structure showing how message units are...

Страница 122: ...and MEAS CURR 3 6 4 4 DATA Some commands require data to accompany the keyword either in the form of a numeric value or character string Data always follows the last keyword of a command or query e g...

Страница 123: ...line NL ASCII 10 decimal or 0A hex NOTE Kepco power supplies require a message terminator at the end of each program mes sage The examples shown in this manual assume a message terminator will be add...

Страница 124: ...parser back to the root otherwise the next keyword will be taken as a subunit of the previous message unit e g the command meas volt curr will read output voltage and output current since both volt a...

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Страница 126: ...the trigger system is enabled If trigger source is external and the trigger input goes low the WTG will remain in a one condition until after the trigger input goes high 6 Transient Armed 1 indicates...

Страница 127: ...llustrated is for a configuration using an IBM PC or compatible with a National Instruments GPIB interface card It will be necessary to consult the manufacturer s data to achieve comparable functions...

Страница 128: ......

Страница 129: ...mode the correct password may be required see PAR 3 2 4 4 If the password has been lost call the factory and a special password will be provided During the calibration new calibration data is compute...

Страница 130: ...nt LO towards COM S 2 Adjust for zero posi tive and negative FS CURRENT PROTECTION 1 POSITIVE 2 NEGATIVE Internal Output Current 1 Current FS 2 Current FS Short with Meas Shunt Automatic VM 1 DVM betw...

Страница 131: ...be 10 ppm or better The digital voltmeter DVM used to measure output voltage and the voltage across the current sensing resistor should have at least six digits multiple ranges the smallest resolutio...

Страница 132: ...MAX 10V MIN 0 003V BOP 20 50MG 0V 0 0002V 20V MAX 20V MIN 0 002V 20V MAX 20V MIN 0 006V BOP 36 28MG 0V 0 0036V 36V MAX 36V MIN 0 0036V 36V MAX 36V MIN 0 01V BOP 50 20MG 0V 0 005V 50V MAX 50V MIN 0 00...

Страница 133: ...MIN 0 008mV 0 075V MAX 0 075V MIN 0 038mV BOP 20 50MG 0 001 Ohm 0V 0 005mV 0 05V MAX 0 05V MIN 0 005mV 0 05V MAX 0 05V MIN 0 025mV BOP 36 28MG 0 001 Ohm 0V 0 003mV 0 028V MAX 0 028V MIN 0 003mV 0 028...

Страница 134: ...ut to obtain the closest value above the nominal full scale value 3 Set the unit for local sensing with GND Network in see Figure 4 1 and discon nect load from BOP output to prepare the unit for volta...

Страница 135: ...ending CAL VEXT MAX Measure the voltage output using the DVM To adjust send CAL DATA commands as needed see PAR 4 3b until the DVM reading is as close as possible above the nominal full scale value wi...

Страница 136: ...e 4 2 to connect the C terminals of the Kelvin type sense resistor to the BOP and connect the DVM to the P probe terminals of the sense resistor LO terminal of DVM to common P terminal Table 4 4 provi...

Страница 137: ...VM reads as close as possible above the nominal full scale value within tol erance specified in Table 4 4 for FULL SCALE CPR LIMIT 21 Send CAL CPR MIN to adjust the minimum maximum negative current pr...

Страница 138: ...the DVM to pin 6 IOUT_M_UNIT referenced to pin 1 SGND of the PAR SER CONTROL IN connector A2A5J3 Set the BOP to zero output current by sending CAL IOUT ZERO Send CAL DATA commands as needed see PAR 4...

Страница 139: ...nction keys VOLTAGE Selects the voltage calibration of the BOP CURRENT Starts the calibration for the BOP in current mode EXTRL CONTROLS Selects input and output signal calibration used for multiple u...

Страница 140: ...ional mode Adjusts the MINIMUM Negative for this operational mode PROTECT Adjusts External Protection limits Active for EXTERNAL screen only or ENTER to exit this menu 5 Selecting one of the above opt...

Страница 141: ...g is as close as possible above the nominal full scale value within the limits specified in Table 4 3 for FULL SCALE VOLTAGE Press twice 5 Press PROTECT POSITIVE to adjust the maximum positive voltage...

Страница 142: ...ZERO Press once when done 15 Connect a 10 0V 0 1mV d c reference to pin 8 S_IN_SERIAL of the PAR SER CON TROL IN connector A2A5J3 referenced to pin 1 Press POSITIVE to set the BOP to 10 0V output Adju...

Страница 143: ...wice 25 Connect 10 0V 0 1mV d c reference voltage from the external voltage source to External reference pin 11 referenced to pin 4 SGND of the BOP Analog I O Port connector A2A5J6 Press GAIN POSITIVE...

Страница 144: ...CAL DUMP source CAL COPY destination where source and destination refer to the areas of Flash memory where calibration data is stored designated as WORKing PRIor OLDest FACTory MASTer FIRst Source ref...

Страница 145: ...asterisk and are defined and explained in paragraphs A 2 through A 18 arranged in alphabetical order Table A 1 provides a quick reference of all SCPI common commands and queries used in the Interface...

Страница 146: ...ATUS REGISTER QUERY ESR Syntax ESR Return value integer Value contents of Event Status register as defined in Table A 2 Description Causes the power supply to return the contents of the Standard Event...

Страница 147: ...ommands are not inhibited while status bit 0 is 0 OPC is intended to be used at the end of a command line so that the application program can monitor the bus for data until it receives the 1 from the...

Страница 148: ...output current and trig gers This command selects one of the 99 power supply memory locations each of which stores val ues for output current and output voltage Executing a RCL recalls the stored sett...

Страница 149: ...les the corresponding Status Byte bit to set the RQS and MSS bits All the enabled Service Request Enable register bits then are logically ORed to cause Bit 6 of the Status Byte Register MSS RQS to be...

Страница 150: ...s each of the subtests even when any one fails If any test fails an error code bit is set which is returned to the user The error codes returned are listed in Table A 4 A 18 WAI WAIT TO CONTINUE COMMA...

Страница 151: ...vides a quick reference of all SCPI subsys tem commands and queries used in the BOP TABLE B 1 SCPI SUBSYSTEM COMMAND QUERY INDEX COMMAND PAR COMMAND PAR ABOR B 3 SOUR LIST CURR APPL B 54 CAL B 4 SOUR...

Страница 152: ...STAT OPER ENAB B 111 B 112 SYST PASS CEN B 135 STAT OPER EVEN B 113 SYST PASS CDIS B 136 STAT PRES B 114 SYST PASS NEW B 137 STAT QUES EVEN B 115 SYST PASS STAT B 138 STAT QUES COND B 116 SYST REM B 1...

Страница 153: ...nless preceded by INIT or INIT CONT ON Related Com mands TRG TRIG TRIG SOUR See example Figure B 1 CAL CEXT command CAL CGA command CAL CLIM command CAL CPR command CAL CURR DATA command CAL DATA valu...

Страница 154: ...be captured by setting WTG bit 5 in the Status Operation Enabled Register to cause the WTG bit to be set in the Sta tus Operation Event register See example Figure B 1 Executing RST sets the init con...

Страница 155: ...de of operation Related commands SYST COMM GPIB ADDR SYST LANG SYST SET VOLT LIM CURR LIM CURR PROT LIM VOLT PROT LIM See PAR 3 5 2 2 and Figure 3 16 for special programming considerations NOTES 1 The...

Страница 156: ...mple curr 16 3 Creates the sample of the waveform The output level is 3 amperes and the number of samples is 16 list CURR appl level 095 3 Creates the initial part of the level It is established by mu...

Страница 157: ...ry See PAR 3 3 6 for description of ACTIVE RESISTIVE and BAT TERY modes B 16 OUTPut MODE QUERY OUTP MODE Syntax Short Form OUTP MODE Long Form OUTPut MODE Return Value ACTIVE RESISTIVE BATTERY Descrip...

Страница 158: ...voltage mode volt 15 curr 2 Allows the power supply to provide 15 volts positive with the ability to source or sink up to 2 amperes The display shows 15 000 2 000 2 000 CURR 10 Since the BOP is operat...

Страница 159: ...LIM POS Long Form SOURce CURRent LEVel LIMit Positive Returns value Description Identifies the positive software limit value of output current that the unit can source quadrant 1 Figure 1 3 or sink qu...

Страница 160: ...it is in local mode or SCPI command if the unit is in remote mode EXTERNAL Allows the limits to be controlled by analog signals applied to the analog port limits set from the keypad or SCPI command ha...

Страница 161: ...ent LEVel PROTect LIMit BOTH QUERY CURR PROT LIM BOTH Syntax Short Form SOUR CURR LEV PROT LIM BOTH Long Form SOURce CURRent LEVel PROTect LIMit BOTH Returns exp_value exp_value Description Identifies...

Страница 162: ...hort Form SOUR CURR LEV TRIG AMP Long Form SOURce CURRent LEVel TRIGgered AMPlitude Return Value exp_value digits with decimal point and Exponent e g 2 71E1 for 27 1 Description Returns the current va...

Страница 163: ...d LIST DWEL POIN Returns 480 indicating 480 points have been assigned dwell times LIST DWEL Returns 1 38e 4 indicating the unit used 138 microseconds per division automatically selected as the best po...

Страница 164: ...t transitions from location 20 to location 0 VOLT Returns 20 the last step in the list set the unit to 20V LIST DWELL 01 01 01 01 01 01 01 01 01 Enters dwell time of 0 01 seconds in locations 1 throug...

Страница 165: ...rting location is indicated by LIST CURR POIN The maximum number of entries is 2950 3933 or 5900 Since the input buffer of the BOP has a limit of 253 characters multiple commands are necessary to comp...

Страница 166: ...ter is incremented If LIST CURR POIN returns 5 the LIST CURR pointer is at 5 indicating there are 6 data points comprising the list If LIST VOLT has any entries an error message 221 Settings conflict...

Страница 167: ...on Copies points from existing list using the same dwell times but different output settings Cop ies the contents of the dwell entries in the list from the start point to the end point and adds them t...

Страница 168: ...uration must be established by the LIST SET SAMP command otherwise a 221 Settings conflict error will result This command must be preceded by LIST CURR LIST VOLT or LIST SET SAMPLE command other wise...

Страница 169: ...for a wait command between 00025 and 034 seconds Description Establishes the time out for a wait command If this command is not sent the time out period will be 0 indicating an infinite wait time See...

Страница 170: ...nds in width for this example to operate correctly 3 The explanation below shows how each step of the list functions once the list is entered and VOLT MODE LIST the last step is executed list cle Clea...

Страница 171: ...imer is imple mented that allows up to 99 milliseconds for the measurement to complete before automatically proceeding to the next point thereby preventing hang ups due to a measurement problem 3 The...

Страница 172: ...ue is specified the center of the generated series of points is moved off zero The apply generator takes into account the soft limits for the voltage channel and insures the generated array does not e...

Страница 173: ...positive pulse can be very short less than 2 microseconds with this functionality 3 The explanation below shows how each step of the list functions once the list is entered and VOLT MODE LIST the last...

Страница 174: ...put goes low or b the wait time expires non zero wait values only whichever comes first If the wait time is 0 the unit must wait until the trigger input goes low before proceeding to the next step In...

Страница 175: ...e Description Identifies the software limit value for negative output voltage specified by the user B 90 SOURce VOLTage LEVel LIMit POSitive COMMAND VOLT LIM POS Syntax Short Form SOUR VOLT LEV LIM PO...

Страница 176: ...ltage Description Establishes the both the positive and negative protection limits for voltage If the protection limits are not identical the unit automatically reduces the appropriate limit see Figur...

Страница 177: ...ROTect NEGative Returns exp_value Description Identifies the negative protection limit for voltage B 100 SOURce VOLTage LEVel PROTect POSitive COMMAND VOLT PROT POS Syntax Short Form SOUR VOLT LEV PRO...

Страница 178: ...value is between minimum box value Figure 1 3 and 1 above rated nominal output voltage Description Establishes the maximum value possible for the positive protection limit for voltage This may be set...

Страница 179: ...Short Form STAT OPER ENAB Long Form STATus OPERation ENABle Return Value int_value Description Reads Operation Enable Register see Table B 3 Returns value of Operation Enable Register bits Bit set to...

Страница 180: ...Bit set to 1 function enabled active true bit reset to 0 function disabled inactive false See example Figure B 10 NOTES 1 The power supply is assumed to be operating in constant voltage CV mode 2 Exa...

Страница 181: ...ong Form SYSTem BEEP Description Causes the unit to emit a brief audible tone B 120 SYSTem COMMunication GPIB ADDRess COMMAND SYST COMM GPIB ADDR Syntax Short Form SYST COMM GPIB ADDR INT VAL 0 to 30...

Страница 182: ...on SERial PACE Return Value 01 00 Description Returns 01 when data flow control via the serial interface is enabled XON or 00 when disabled NONE see PAR 3 5 6 2 1 B 128SYSTem COMMunication SERiaL PROM...

Страница 183: ...Long Form SYSTem PASSword CDISable Description Clears the password enable state B 137 SYSTem PASSword NEW COMMAND SYST PASS NEW Syntax Short Form SYST PASS NEW old password new password Long Form SYS...

Страница 184: ...power up See PAR 3 5 2 2 and Figure 3 16 for special programming considerations DCL0 Device Clear functions per IEEE 488 2 Standard No effect on the device power supply only clears internal status re...

Страница 185: ...AR A 16 Receipt of the active trigger causes the power supply to program to the previously stored values of VOLT TRIG and CURR TRIG actual output voltage current is dependent upon the load Sending TRI...

Страница 186: ...er supply did not respond to command 249 Master Not Found Execution error bit 4 The slave controller for a multiple unit configuration has not detected a master unit this is an operator error as the s...

Страница 187: ...ric values to zero clears alphanumerics RESET is equivalent to power up cycle ENTER applies settings to output and saves changes HELP is context sensitive keep pressing for more through functions are...

Страница 188: ...Voltage Protect pin 14 PAR 3 4 4 How do I choose between local digital and analog control of the output The unit normally powers up in Local mode Sending a command via RS 232 or GPIB interfaces automa...

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