Page 1 TDI-Dynaload Division XBL Series Electronic Loads Operation & Programming Manual XBL Series Electronic Loads Operation & Programming Manual TDI-Dynaload ® Division Document Number 404078 — Revision P2 Page 1 404078 , Rev.P2...
Page 2 Telephone: (908) 850-5088 Facsimile: (908) 850-0679 Online Availability To find out more about TDI and our products, visit us on the web at: http://www.tdipower.com/ or visit TDI-Dynaload directly at: http://www.dynaload.com. Customer Services For technical assistance regarding our products, contact the following:...
Page 3: Table Of Contents
TDI-Dynaload Division XBL Series Electronic Loads Operation & Programming Manual Contents Chapter 1. — Overview ................. 5 Introduction....................5 Model Number........................7 Modes of Operation......................7 Constant Current Mode.....................7 Constant Resistance Mode....................8 Constant Voltage Mode.....................8 Constant Power Mode.......................8 Pulse Mode........................8 Front Panel Features and Controls............9 Chapter 2.
Page 4 XBL Series Electronic Loads TDI-Dynaload Division Operation & Programming Manual Chapter 3. — PC Control using IEEE-488 Commands and Programming . 42 Control of a Dynaload through a Personal Computer......42 Introduction ..........42 IEEE-488 Bus Subsets................42 Data Separators..................43 Program Line Terminators..............43 Numerical Data Formats.................43...
Page 5 TDI-Dynaload Division XBL Series Electronic Loads Operation & Programming Manual Figure 9: Remote Voltage Sense..............18 Figure 10. Load Status Structure..............143 Tables Table A. Front Panel Features and Controls...........9 Table B. Equipment Safety Symbols............12 Table C. Voltage Selector Tab Setting Guide..........15 Table D.
Page 6: Chapter 1. - Overview
Chapter 1. — Overview Introduction The XBL Series single channel loads are ideal for testing power supplies, fuel cells, large batteries, and other related DC power equipment. The high range current capability and constant power feature facilitate battery testing and analysis.
Page 7: Model Number
The Dynaload is a precision instrument that simulates DC loads to test power supplies, generators, servo systems, batteries and similar DC sources. The XBL Series provides five basic modes of operation: Constant Current, Constant Resistance, Constant Voltage, Constant Power and Pulse Mode. Complete control is available through the full feature front panel, IEEE-488 bus, RS232, or Ethernet interface.
Page 8: Constant Resistance Mode
XBL Series Electronic Loads TDI-Dynaload Division Operation & Programming Manual Constant Resistance Mode Slope = Resistance Setting Referring to , the Dynaload will sink current linearly proportional to the input voltage. Load Current This is set in Amps/Volt, (1/R), or ohms.
Page 9: Front Panel Features And Controls
FREQ: Sets frequency of pulse DUTY CYCLE: Sets duty cycle of pulse TLO (Time LOW): Sets duration of the low portion of pulse THI (Time HIGH): Sets duration of the high portion of pulse XBL Series 404078 Rev P2.odt Page 9 Of 162...
Page 10 Remote Program Enable (Toggle) Short Circuit Test Enable (Toggle) * The XBL Series offers selectable full-scale ranges for current and voltage. When a full scale is selected it changes the full scale of the meter, the current sample, the front panel adjustments, IEEE controlled adjustments and the analog programming input.
Page 11: Chapter 2. - Operating Instructions
ISO 3864, No. B.3.6 SHOCK ISO 3864, No. B.3.1 CAUTION, REFER TO INSTRUCTION MANUAL, DAMAGE CAN RESULT ISO 3864 CAUTION BURN DANGER EASILY TOUCHED HIGHER TEMPERATURE PARTS Table B: Equipment Safety Symbols XBL Series 404078 Rev P2.odt Page 11 Of 162...
Page 12: Rear Panel Description And Electrical Connections
Rear Panel Description and Electrical Connections Electrical connections are made on the rear panel of the unit. Typical rear panel connections are detailed in Figure 6. The rear panel also has terminal block connections that are detailed later in this section as is an optional equipment wiring diagram, using the terminal block connections. Figure 6.
Page 13: E- And E+ Power Input Connections
[100,120,200,240]...or...[115,125,230,250] ..or [100,120,220,240]. Use to set the voltage selector position for your input voltage. The selected voltage should be positioned adjacent to the molded arrow on the top of the input module. XBL Series 404078 Rev P2.odt Page 13 Of 162...
Page 14: Current Interrupt Circuit (Option)
AC Input Wiring Tips A standard U.S. three-prong cord is provided with your Dynaload. The voltage selector tab is mounted to the left of the three-prong AC connector (see figure 6) WARNING: The power cord provides a chassis ground through a third conductor. Make sure that your power outlet is of the 3-conductor type with the correct pin connected to earth ground.
Page 15: The Terminal Block And Terminal Block Connections
The Terminal Block and Terminal Block Connections , and the sections that follow to better understand the wiring connections that can be made to the terminal block. Figure 7: Terminal Block Detail XBL Series 404078 Rev P2.odt Page 15 Of 162...
Page 16 Figure 8: Terminal Block Connections CAUTION: External Instruments connected to the terminal block (TB) should be isolated not earth grounded. All input or output TB connections should be references to S-. Page 16 Of 162...
Page 17 If the front panel is in the ON position the enable can toggle the DC on and off. CAUTION: Remove local sense jumpers before connecting the remote sense wires to your power source or damage will occur to the load. XBL Series 404078 Rev P2.odt Page 17 Of 162...
Page 18: Figure 9: Remote Voltage Sense
S– and S+ (Voltage Sense) There are two S– terminals and one S+ terminal. The S– and S+ (Sense Negative and Sense Positive) terminals are used to sense the load voltage. The connection of a remote voltage sense device to the S– and S+ terminals is illustrated in . CAUTION: Do not attempt to connect these inputs as the load inputs, internal damage may occur.
Page 19 10. Note: All XBL’s have a, factory installed, jumper across E- and S- to enable “Load On”. A normally closed emergency cut off switch can be connected at this point. XBL Series 404078 Rev P2.odt Page 19 Of 162...
Page 20: Table D. Wire Gauge/Ampere Rating Reference Table
Effects Of Cable Length Current Oscillation The Dynaload regulation loop is designed to operate at a fast response time of 10µS. This is not affected by manipulating the slew rate. When operating in any of the constant DC modes, the external cable length can affect the performance of the load.
Page 21 — — 132.8 — — 167.5 — — 212.0 — — 266.0 — — — — 336.0 0000 — — — — 424.0 National Electrical Code Underwriters Laboratory American Insurance Association XBL Series 404078 Rev P2.odt Page 21 Of 162...
Page 22: Recommended Operating Procedure
Recommended Operating Procedure The following procedure is recommended for Dynaload operation: (1)AC switch should be turned off. (2)Connect DC source to E+ and E– connections. Always watch for correct polarity. (3)If external analog programming is to be used, connect signal source. If IEEE-488, Ethernet, or RS232 (optional) is to be used, connect the cable.
Page 23: Operating Mode Guidelines
The load will not conduct any current until the source voltage tries to exceed the voltage set point. Once the source voltage is high enough the load will shunt XBL Series 404078 Rev P2.odt Page 23 Of 162...
Page 24: Cp - Constant Power Mode (Basic Mode)
Full Scale Range Switching The XBL Series provides selection of one of three full scale input voltage ranges and one of three full scale input current ranges. The full scale voltage and current ranges may be selected in any combination resulting in nine operational ranges per unit.
Page 25: Short Circuit Feature
ENTER. When using the RS 232, Ethernet or IEEE-488 bus the setup can be stored with the MS command and recalled with the MR command. Setting the memory can also be accomplished throught the front panel menu. XBL Series 404078 Rev P2.odt Page 25 Of 162...
Page 26: Manual Adjust
Dynaload. This knob can be activated by pressing the MAN ADJ key. Remote Programming The XBL series is analog programmable in the CC mode of operation. A 0 to 10 volt programming signal would correspond to 0 to full-scale load in CC mode. For example: If the constant current mode is selected and the 200A range is selected, a programming voltage of 5 volts is required to program the load to 100A.
Page 27: Programmable Under Voltage
The subsections in this section detail each of the menu commands. Referring to Table F, the menu features are as follows: Table F. Menu Commands Number Menu Command MODEL SERIAL VERSION BUILD DATE XBL Series 404078 Rev P2.odt Page 27 Of 162...
Page 28 WARRANTY DATE MAC ADDRESS MAX VOLTS (clear) MAX AMPS (clear) MAX POWER (clear) IP ADDRESS NET MASK GATEWAY TCP PORT IEEE ADDRESS IEEE CMD TERM RS232 XXXXX N81 KEY CLICK SHORT BTN MASTER SLAVE IND SLEW RATE UNDERVOLTAGE VOLTAGE LIMIT CURRENT LIMIT POWER LIMIT RESET...
Page 29 The LCD displays the current short button setting. This value may be changed via the keypad and the ENTER key. The factory default setting is 0 (OFF – short button is inactive). The alternate setting is 1 (ON – short button is active). XBL Series 404078 Rev P2.odt Page 29 Of 162...
Page 30 #19 MASTER SLAVE IND The LCD displays the current master, slave, or independent setting. This value may be changed via the keypad and the ENTER key. The factory default setting is 0 (independent or stand alone mode). The alternate settings are: 1 (slave mode) , 2 (master mode). #20 SLEW RATE The LCD displays the current slew rate setting.
Page 31 If waveforms other than square waves are required, this can be accomplished by programming the loads using an external analog program source (refer to the Remote Programming section that follows). XBL Series 404078 Rev P2.odt Page 31 Of 162...
Page 32: Operation Using Ieee-488 Programming
Operation using IEEE-488 Programming This section covers basic operation only. For detailed information on pulse loading with the IEEE-488 commands, refer to the IEEE-488 Commands and Programming section and the Language Elements Chapter 3 later in this manual. Effects of Cable Inductance On Pulse Loading When the Dynaload is used for high current pulse loading, the effects of cable inductance must be considered.
Page 33: Transconductance
It is recommended to add a baseline current which will greatly reduce this distortion. NOTE: Range switching will have no effect on operation in the transconductance region. XBL Series 404078 Rev P2.odt Page 33 Of 162...
Page 34: Location, Airflow, Maintenance
Location, Airflow, Maintenance The figures shown in Appendix C — Outline Drawings by Model are the dimensions of your Dynaload. In addition to the rack mounting ears, the use of slides or shelf type supports is required. The RBL chassis is equipped with mounting holes that match Jonathan 110-QD-24-2 slides.
Page 35: Troubleshooting Guide
* Compliance Voltage: The minimum input voltage at which the load can sink its maximum rated current. Loads can operate below the minimum compliance voltage but will not be able to achieve full rated current. XBL Series 404078 Rev P2.odt Page 35 Of 162...
Page 36: Table H. Troubleshooting (Symptoms/Possible Causes/Explanations And Corrective Actions)
Table H. Troubleshooting (Symptoms/Possible Causes/Explanations and Corrective Actions) Symptom Possible Cause Explanation/Corrective Action AC power button does AC input fuse on the rear panel Check fuse and replace as not function. has blown. necessary. AC power cord is loose or not Secure AC power cord.
Page 37 Measure for voltage spikes at the loads input and correct as necessary. Once the input voltage is within range, manually press the load on button to resume operation. XBL Series 404078 Rev P2.odt Page 37 Of 162...
Page 38 Symptom Possible Cause Explanation/Corrective Action Load powers up, The “EXT PROG” button or a Pressing the “EXT PROG” or a “Loads On” but will range button has been pressed range button will reset the current not draw current. after setting the current (CI 5 to zero.
Page 39 These can be removed and remote on the rear terminal sense leads can be installed. Refer strip. to the voltage sense-related sections of Chapter 1. XBL Series 404078 Rev P2.odt Page 39 Of 162...
Page 40 Symptom Possible Cause Explanation/Corrective Action During normal One or more power modules in Check that there is nothing operation the loads the power tray are overheating. blocking the airflow through the red “SYS”, “TEMP” unit. and “AC” LEDs light. One of the loads cooling fans Send the unit in for service.
Page 41: Chapter 3. - Pc Control Using Ieee-488 Commands And Programming
The load can be switched to local operation. Parallel Poll No capability. Device Clear The Dynaload responds to device clear (DCL) and selected device clear (SDC) commands according to IEEE-488.2 specifications. Device Trigger No capability. XBL Series 404078 Rev P2.odt Page 41 Of 162...
Page 42: Data Separators
Data Separators It is not necessary to separate numerical data from the previous command by any character. White space is ignored. The use of a space is recommended, however, as it aids in command string legibility. Program Line Terminators The terminator instructs the Dynaload that the end of an incoming command line has been reached and that command decoding can begin.
Page 43: Numerical Data Units
First current value Amperes Amps Second current value Amperes Amps Load power Watts Watts First power value Watts Watts Second power value Watts Watts First resistance value (ohms mode) Ohms Ohms XBL Series 404078 Rev P2.odt Page 43 Of 162...
Page 44: Table K. Numerical Data Units
Second resistance value (ohms mode) Ohms Ohms First slew (Sets rise and fall times) Microseconds µs Second slew (Sets fall time only) Microseconds µs Slew rate (Sets rise and fall times) Microseconds µs First duration Microseconds µs Second duration Microseconds µs Load voltage Volts...
Page 45: Power-On Defaults
T2 — Second duration 500 microseconds TEXT — Text V1 — First voltage value Vmax V2 — Second voltage value Vmax VL — Voltage limit 100% of full scale XM — External modulation XBL Series 404078 Rev P2.odt Page 45 Of 162...
Page 46: Queries
Queries Commands followed by a question mark “?” are queries. When received by the Dynaload, the appropriate information is stored for reading by the IEEE-488 bus controller. It is important to note that the results of a query must be read back before sending another command to the Dynaload.
Page 47 Close load connect relay LOAD? Read load connect relay setting Unlock front panel LOCK OFF LOCK ON Lock front panel LOCK? Read front panel lock setting Read Ethernet MAC Address MAC? XBL Series 404078 Rev P2.odt Page 47 Of 162...
Page 48 Read measured maximum current MAXCUR? MAXPWR? Read measured maximum power MAXVOL? Read measured maximum voltage Read unit model number MDL? MODE? Read mode MR <NR1> Memory Recall Memory Save MS <NR1> NM<adr> Set Ethernet Net Mask Read Ethernet Net Mask Read Power P1 <NR2>...
Page 49 Returns software version number VL <NR2> Set Voltage Limit Read Voltage Limit setting WARRDTE? Read warranty expiration date WF [<NR1>] Set Square Wave pulsing on Set Square Wave pulsing off WF OFF XBL Series 404078 Rev P2.odt Page 49 Of 162...
Page 50 Returns GPIB errors XM ON Set External Modulation on XM OFF Set External Modulation off Set External Modulation with programmed offset XM PLUS <NR2> XM + <NR2> Alternate Syntax for XM PLUS <NR2> Read External Modulation setting Page 50 Of 162...
Page 51 IEEE-488 bus address, any of the status registers or the output queue. Command Syntax *RST Example *RST This will reset the load to its factory default settings. Query Syntax NONE Returned Parameters XBL Series 404078 Rev P2.odt Page 51 Of 162...
Page 52 *TST? Alternate form of IST? query. AV1 Amps/Volt Pulsing Base Level This command is used to set the base level when pulse loading in Description the Amps/Volt mode. NOTE: AVL or AVH must have been previously set. Command Syntax AV1 <NR2> AV1 25.0 Example This will set the base Amps/Volt level to 25 amps/volt...
Page 53 Command Syntax AVH <NR2> Example AVH 25.0 This will place the load in Amps/Volt High mode at 25 Amps per Volt. Query Syntax Returned Parameters TEXT ON: <NR2> amps/v TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 53 Of 162...
Page 54 VL Amps/Volt Low Description This command places the load into Amps/Volt Low mode at the specified level. Command Syntax AVL <NR2> Example AVL 2.5 This will place the load in Amps/Volt Low mode at 2.5 Amps per Volt. Query Syntax Returned Parameters TEXT ON: <NR2>...
Page 55 This command returns the XBL factory build date. Command Syntax BLDDTE? BLDDTE? Example This will return the XBL factory build date. BLDDTE? Query Syntax Returned Parameters TEXT ON: MMDDYYYY or MM-DD-YYYY TEXT OFF: MMDDYYYY or MM-DD-YYYY XBL Series 404078 Rev P2.odt Page 55 Of 162...
Page 56 BLDLOC? Description This command returns the XBL factory build location. Command Syntax BLDLOC? BLDLOC? Example This will return the XBL factory build location. BLDLOC? Query Syntax Returned Parameters TEXT ON: HACK TEXT OFF: HACK Page 56 Of 162...
Page 57 Command Syntax CI <NR2> Example CI 10.5 This will place the load in Constant Current at 10.5 Amps. Query Syntax TEXT ON: <NR2> amps Returned Parameters TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 57 Of 162...
Page 58 CLRBB Description This command resets the XBL telemetry data. Command Syntax CLRBB CLRBB Example This will reset the units telemetry data (returned by the commands MAXVOL?, MAXCUR?, MAXPWR?) to zero. Query Syntax CLRBB Returned Parameters NONE CON? Condition register Description This query returns the contents of the Condition register and clears its contents.
Page 59 Example CON? Query Syntax Returned Parameters TEXT ON and STATXT ON: <text response string> TEXT OFF or STATXT OFF: <NR1> XBL Series 404078 Rev P2.odt Page 59 Of 162...
Page 60 CP Constant Power Description This command places the load into Constant Power mode at the specified level. CP <NR2> Command Syntax Example CP 20.0 This will place the load in Constant Power at 20 Amps. Query Syntax Returned Parameters TEXT ON: <NR2> watts TEXT OFF: <NR2>...
Page 61 See query form of CRH and CRL that immediately follows. XBL Series 404078 Rev P2.odt Page 61 Of 162...
Page 62 CR Constant Resistance Low alternate command Description This command places the load into Constant Resistance Low mode at the specified level. CR <NR2> Command Syntax Example CR 1.5 This will place the load in Constant Resistance Low mode at 1.5 Ohms.
Page 63 Command Syntax CRH <NR2> CRH 100.0 Example This will place the load in Constant Resistance High mode at 100 Ohms. Query Syntax Returned Parameters TEXT ON: <NR2> ohms TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 63 Of 162...
Page 64 CRL Constant Resistance Low Description This command places the load into Constant Resistance Low mode at the specified level. CRL <NR2> Command Syntax Example CRL 1.5 This will place the load in Constant Resistance Low mode at 1.5 Ohms. Query Syntax TEXT ON: <NR2>...
Page 65 Command Syntax CV <NR2> CV 100.0 Example This will place the load in Constant Voltage at 100 Volts. Query Syntax TEXT ON: <NR2> volts Returned Parameters TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 65 Of 162...
Page 66 DU Duty Cycle Description This command is used to set the Duty Cycle for square wave pulsing. This defines the percentage of peak pulse time and will set the Pulsing Base Time (T1) and Pulsing Peak Time (T2) accordingly based upon the defined frequency. Command Syntax DU <NR2>...
Page 67 If no bits are set, “NO COMMAND ERROR” will be returned. Command Syntax NONE Example Query Syntax ERR? Returned Parameters TEXT ON and STATXT ON: <text response string> TEXT OFF or STATXT OFF: <NR1> XBL Series 404078 Rev P2.odt Page 67 Of 162...
Page 68 ET RST Elapsed Timer Reset Description This command resets the XBL elapsed timer to zero. Command Syntax ET RST Example ET RST This will reset the elapsed timer to zero. Query Syntax Returned Parameters NONE Page 68 Of 162...
Page 69: Fq Frequency
This will close the general purpose relay driver number 0. Query Syntax NONE NONE Returned Parameters GPROPN Open General Purpose Relay This command is used to open the general purpose relay drivers. Description XBL Series 404078 Rev P2.odt Page 69 Of 162...
Page 70 Command Syntax GPROPN <NR1> GPROPN 0 Example This will close the general purpose relay driver number 0. Query Syntax NONE NONE Returned Parameters Page 70 Of 162...
Page 71 This command is used to set the Ethernet interface gateway. Description Command Syntax GWY <adr> Example GWY 192.168.1.1 This will set the Ethernet interface gateway to 192.168.1.1 Query Syntax GWY? Returned Parameters TEXT ON: <adr> TEXT OFF: <adr> XBL Series 404078 Rev P2.odt Page 71 Of 162...
Page 72 I? Read Current Description This query returns the actual current reading in Amps passing through the load. Command Syntax NONE Example Query Syntax Returned Parameters TEXT ON: <NR2> amps TEXT OFF: <NR2> Page 72 Of 162...
Page 73 Constant Current mode. Command Syntax I1 <NR2> I1 10.5 Example This will set the base Constant Current level to 10.5 Amps. Query Syntax TEXT ON: <NR2> amps Returned Parameters TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 73 Of 162...
Page 74 I2 Constant Current Pulsing Peak Level Description This command is used to set the peak level relative to the base level when pulse loading in the Constant Current mode. I2 <NR2> Command Syntax Example I2 25.0 This will set the peak level to 25 Amps above the base level. Therefore if the base level setting is 10.5A, the peaks will be 35.5 Amps.
Page 75 This query returns the load’s model identification string that includes its rated voltage, current, power and type in the format: Model:XBL <rated voltage>-<rated current>-<rated power><type> Command Syntax Example Query Syntax Returned Parameters Model:XBL <voltage>-<current>-<power><type> XBL Series 404078 Rev P2.odt Page 75 Of 162...
Page 76 IEEEADR IEEE 488 Address Description This command sets the XBL IEEE 488 bus address. Command Syntax IEEEADR <NR1> IEEEADR 9 Example This will set the XBL IEEE 488 bus address to 9. Query Syntax IEEEADR? TEXT ON: <NR1> Returned Parameters TEXT OFF: <NR1>...
Page 77 XBL is restarted. Command Syntax IEEEOFF IEEEOFF Example This will turn off the IEEE 488 interface. Query Syntax NONE NONE Returned Parameters XBL Series 404078 Rev P2.odt Page 77 Of 162...
Page 78 IEEETRM Sets the IEEE488 Command Terminator Description This command sets the the XBL IEEE 488 command terminator to either use a carriage return <CR> or a carriage return and line feed <CR LF>. Command Syntax IEEETRM <NR1> IEEETRM 1 Example This will set the XBL IEEE 488 command terminator to <CRLF>.
Page 79 This command is used to put the load in independent mode. In independent mode the load operates as a “stand alone” unit. Command Syntax INDEP Example INDEP This will place the unit in independent mode. Query Syntax NONE Returned Parameters XBL Series 404078 Rev P2.odt Page 79 Of 162...
Page 80 IL Current Limit Description This command is used to set the Current Limit set point. The Current Limit circuit will not allow the load current to exceed this level. Command Syntax IL <NR2> IL 50.0 Example This will set the Current Limit to 50 Volts. Query Syntax TEXT ON: <NR2>...
Page 81 This command is used to set the Ethernet address. Description Command Syntax IP <adr> Example IP 192.168.1.10 This will set the Ethernet interface address to 192.168.1.1 Query Syntax Returned Parameters TEXT ON: <adr> TEXT OFF: <adr> XBL Series 404078 Rev P2.odt Page 81 Of 162...
Page 82 IST? Internal Self Test Description This command performs the XBL internal self test and returns the result. Command Syntax IST? Example IST? IST? Query Syntax Returned Parameters TEXT ON: SELF TEST PASSED SELF TEST FAILED TEXT OFF: 0 non zero Page 82 Of 162...
Page 83 Command Syntax IWV <NR2> Example IWV 10.5 This will place the load in Constant Current at 10.5 Amps once the compliance voltage is reached. NONE Query Syntax Returned Parameters NONE XBL Series 404078 Rev P2.odt Page 83 Of 162...
Page 84 KEYOFF Turn off keyboard sounds This command turns off the XBL keyboard sounds. Description KEYOFF Command Syntax Example KEYOFF This will turn off the XBL keyboard sounds. NONE Query Syntax Returned Parameters NONE Page 84 Of 162...
Page 85 KEYON Turn on keyboard sounds This command turns on the XBL keyboard sounds. Description KEYON Command Syntax Example KEYON This will turn on the XBL keyboard sounds. NONE Query Syntax Returned Parameters NONE XBL Series 404078 Rev P2.odt Page 85 Of 162...
Page 86 LAT Latch register Description This command provides access to the Latch register. The bits in this register define which bits of the Condition (CON) register will latch on if set until the CON register is read. Setting one bit by writing its bit weight into the LAT register enables its equivalent bit in the CON register.
Page 87 LOAD OFF This will open the load connect relay and stop loading. Query Syntax LOAD? TEXT ON: LOAD ON Returned Parameters LOAD OFF TEXT 1 (meaning On) OFF: 0 (meaning Off) XBL Series 404078 Rev P2.odt Page 87 Of 162...
Page 88 LOCK Front Panel Lock Description This command is used to lock or unlock the load’s front panel. When locked, manual operation through the load’s front panel is inhibited. LOCK ON Command Syntax LOCK OFF Example LOCK ON This will lock the front panel. LOCK OFF This will unlock the front panel.
Page 89 MAC? Ethernet MAC Address This command is used to retrieve the Ethernet MAC address. Description Command Syntax MAC? <string> Example MAC? Query Syntax Returned Parameters TEXT ON: <string> TEXT OFF: <string> XBL Series 404078 Rev P2.odt Page 89 Of 162...
Page 90 MASTER Master Mode Description This command is used to put the load in master mode. In master mode the load will control the operation of the slave. The unit will indicate master mode by displaying XBL Master on the LCD. MASTER Command Syntax Example...
Page 91 This command is used to retrieve the maximum current measured Description by the XBL. MAXCUR? Command Syntax MAXCUR? Example Query Syntax MAXCUR? Returned Parameters TEXT ON: <NR2> amps TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 91 Of 162...
Page 92 MAXPWR? Maximum Power Measured This command is used to retrieve the maximum power measured by Description the XBL. MAXPWR? Command Syntax MAXPWR? Example Query Syntax MAXPWR? Returned Parameters TEXT ON: <NR2> watts TEXT OFF: <NR2> Page 92 Of 162...
Page 93 This command is used to retrieve the maximum voltage measured Description by the XBL. MAXVOL? Command Syntax MAXVOL? Example Query Syntax MAXVOL? Returned Parameters TEXT ON: <NR2> volts TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 93 Of 162...
Page 94 MDL? Alternate form of ID? query. Page 94 Of 162...
Page 95 TEXT OFF or STATXT OFF: <NR1> MR Memory Recall Description This command recalls the load’s setup stored in the specified memory location. The memory location number must be a value from 1 through 6. XBL Series 404078 Rev P2.odt Page 95 Of 162...
Page 96 Command Syntax MR <NR1> MR 3 Example This will recall the setup stored in memory location 3. Query Syntax NONE Returned Parameters Page 96 Of 162...
Page 97 The memory location number must be a value from 1 through 6. MS <NR1> Command Syntax Example MS 3 This will store the load’s current setup in memory location 3. NONE Query Syntax Returned Parameters XBL Series 404078 Rev P2.odt Page 97 Of 162...
Page 98 NETOFF Turn off Ethernet interface This command turns off the XBL Ethernet interface. The interface Description will remain in the off state until the XBL is restarted. Command Syntax NETOFF NETOFF Example This will turn off the Ethernet interface. Query Syntax NONE NONE Returned Parameters...
Page 99 This command is used to set the Ethernet net mask. Description Command Syntax NM <adr> Example NM 255.255.0.0 This will set the Ethernet interface net mask to 255.255.0.0 Query Syntax Returned Parameters TEXT ON: <adr> TEXT OFF: <adr> XBL Series 404078 Rev P2.odt Page 99 Of 162...
Page 100 P? Read Power Description This query returns the computed load power in Watts. This value is computed from the load’s current (I?) and Voltage (V?) readings. Command Syntax NONE Example Query Syntax Returned Parameters TEXT ON: <NR2> watts TEXT OFF: <NR2> Page 100 Of 162...
Page 101 Constant Power mode. P1 <NR2> Command Syntax Example P1 25.3 This will set the base Constant Power level to 25.3 Watts. Query Syntax Returned Parameters TEXT ON: <NR2> watts TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 101 Of 162...
Page 102 P2 Constant Power Pulsing Peak Level Description This command is used to set the peak level relative to the base level when pulse loading in the Constant Power mode. Command Syntax P2 <NR2> Example P2 20.0 This will set the peak level to 20 Watts above the base level. Therefore if the base level setting is 25.3, the peaks will be 45.3 Watts.
Page 103 Limit circuit will not allow the load power to exceed this level. Command Syntax PL <NR2> Example PL 250.0 This will set the Power Limit to 250 Watts. Query Syntax Returned Parameters TEXT ON: <NR2> watts TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 103 Of 162...
Page 104 PORT Set Ethernet TCP Port This command is used to set the Ethernet port for TCP Description communications. PORT <NR1> Command Syntax PORT 9760 Example This will set the Ethernet port for TCP communications to 9760 PORT? Query Syntax TEXT ON: <NR1> Returned Parameters TEXT OFF: <NR1>...
Page 105 CRH or CRL must have been previously set. R1 <NR2> Command Syntax Example R1 10.0 This will set the base resistance to 10 Ohms. Query Syntax Returned Parameters TEXT ON: <NR2> ohms TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 105 Of 162...
Page 106 R2 Constant Resistance Pulsing Peak Level Description This command is used to set the peak level relative to the base level when pulse loading in the Constant Resistance mode. This resistance will be applied in parallel to the base resistance. NOTE: CRH or CRL must have been previously set.
Page 107 RNG 2 This will set the load to the medium Voltage and high current range. RNG? Query Syntax Returned Parameters TEXT ON: <V range> VOLT, <I range> AMP TEXT OFF: <NR1> XBL Series 404078 Rev P2.odt Page 107 Of 162...
Page 108 RNGS? Alternate form of RNG? Query. Page 108 Of 162...
Page 109 This will set the XBL RS 232 communications to 9600 bps, no parity bit, 8 bits, 1 stop bit. Only the following parameters are valid: 2400N81, 4800N81, 9600N81, 19200N81 Related Query RS232? Returned Parameters TEXT ON: <string> TEXT OFF: <string> XBL Series 404078 Rev P2.odt Page 109 Of 162...
Page 110 RS232OFF Turn off RS232 interface This command turns off the XBL RS232 interface. The interface Description will remain in the off state until the XBL is restarted. Command Syntax RS232OFF RS232OFF Example This will turn off the RS 232 interface. Query Syntax NONE NONE...
Page 111 Description This command resets the load to its factory default power-on settings. Command Syntax Example This will reset the load to its factory default power-on settings. Related Query NONE Returned Parameters XBL Series 404078 Rev P2.odt Page 111 Of 162...
Page 112 S1 Rising Slew Rate Description This command is used to set the rise time in microseconds for a full- scale transition within the selected range. NOTE: Unless different rising and falling slew limits are required, it is recommended that the SR command be used to set both limits simultaneously.
Page 113 Sets the rise time to 500 microseconds for a full-scale to zero transition within the selected range. Query Syntax Returned Parameters TEXT ON: <NR2> us full to zero TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 113 Of 162...
Page 114 SBE Summary Bit Enable register Description This command provides access to the Summary Bit Enable register. The bits in this register define which bits of the Condition (CON) register will set the Major Fault and Minor Fault summary bits in the Status Byte (STB) and the Status Register (STA).
Page 115 Therefore the value in the SDN register after this command will be 108. Related Query SDN? TEXT ON and STATXT ON: <text response string> Returned Parameters TEXT OFF or STATXT OFF: <NR1> XBL Series 404078 Rev P2.odt Page 115 Of 162...
Page 116 SERNO? XBL Serial Number This command is used to retrieve the XBL serial number. Description Command Syntax SERNO? <string> Example SERNO? SERNO? Query Syntax Returned Parameters TEXT ON: <string> TEXT OFF: <string> Page 116 Of 162...
Page 117 Maximum slew rate is highly dependent on factors including power source, source to load wiring, and operating mode. Command Syntax Example Sets the slew rate limiter to the fast range. NONE Query Syntax NONE Returned Parameters XBL Series 404078 Rev P2.odt Page 117 Of 162...
Page 118 SHORT Short Circuit Description This command is used to apply or remove a simulated short circuit from the device being tested while the load connect relay is closed. CAUTION: This function is intended for use only when testing current limited power sources.
Page 119 10 seconds of operation. Command Syntax SLAVE Example SLAVE This will place the unit in slave mode. Query Syntax NONE Returned Parameters XBL Series 404078 Rev P2.odt Page 119 Of 162...
Page 120 Alternate form of SERNO? query. Page 120 Of 162...
Page 121 Command Syntax SR <NR2> SR 200 Example Sets the rise or fall time for a full-scale transition to 200 microseconds. Query Syntax Returned Parameters TEXT ON: <NR2> us TEXT OFF: <NR2> XBL Series 404078 Rev P2.odt Page 121 Of 162...
Page 122 SRQ Service Request Register Description This command provides access to the Service Request register. In IEEE-488 equipped units the bits in this register define which bits of the Status Register (STA) will generate a service request. A query form is provided so the setting can be read back. The function of this register is similar to that of the Service Request Enable (*SRE) register in the IEEE-488.2 status structure.
Page 123 Maximum slew rate is highly dependent on factors including power source, source to load wiring and operating mode. Command Syntax Example Sets the slew rate limiter to the slow range. Query Syntax NONE Returned Parameters NONE XBL Series 404078 Rev P2.odt Page 123 Of 162...
Page 124 STA? Status Register Description This query returns the contents of the Status register and then clears its contents. The response is either numeric or a text description depending on the TEXT ON/OFF and STATXT ON/OFF settings. This register contains summary status information and serves a function that is similar to the Status Byte (*STB?) in the IEEE 488.2 status structure.
Page 125 Major Fault Alarm Not Used Not Used Not Used Not Used Not Used Not Used Command Syntax NONE STATUS? Example Query Syntax STATUS? Returned Parameters TEXT ON: <string> TEXT OFF: <string> XBL Series 404078 Rev P2.odt Page 125 Of 162...
Page 126 STATXT Status Text This command is used to turn off descriptive responses for the Description CON?, ERR?, LAT?, SBE?, SDN?, SRQ? and STA? queries without affecting other Text Mode responses. This allows the status related registers to be read in an easily decoded numeric form while all other queries retain their descriptive responses.
Page 127 This will turn on Square Wave pulsing until explicitly turned off. SW OFF This will turn off Square Wave pulsing. Query Syntax Text On: SW ON Returned Parameters SW OFF Text Off: 1 (meaning On) 0 (meaning Off) XBL Series 404078 Rev P2.odt Page 127 Of 162...
Page 128 T1 Pulsing Base Time Description This command is used to directly set the base time in microseconds for square wave pulsing. This will also set the Duty Cycle (DU) and Frequency (FQ) accordingly based upon the Pulsing Peak Time (T2). T1 <NR1>...
Page 129 This will set the pulse base time to 4000µs. If T1 were 6000µs, the duty cycle (DU) would be 40% and frequency would be 100Hz. Query Syntax Returned Parameters TEXT ON: <NR1> us TEXT OFF: <NR1> XBL Series 404078 Rev P2.odt Page 129 Of 162...
Page 130 TEXT Text Mode Description This command is used to turn on or off the descriptive responses that are available on many queries. TEXT ON Command Syntax TEXT OFF TEXT ON Example This will turn on the descriptive responses. TEXT OFF This will turn off the descriptive responses.
Page 131 Voltage on its input terminals drops below this threshold. UV 0 This will disable the Programmable Under Voltage feature. Query Syntax Returned Parameters Text On: <NR2> volts Text Off: <NR2> XBL Series 404078 Rev P2.odt Page 131 Of 162...
Page 132 V? Read Voltage Description This query returns the actual Voltage in Volts measured at the load’s Voltage sense terminals. NOTE: If remote Voltage sensing is not used, this voltage may differ from the output voltage of the device. This is due to the Voltage drops in the conductors between the load and the device under test.
Page 133 VER? Version This query returns the load’s firmware version as a variable length Description alphanumeric string. Command Syntax NONE Example Query Syntax VER? Returned Parameters <version string> XBL Series 404078 Rev P2.odt Page 133 Of 162...
Page 134 VL Voltage Limit Description This command is used to set the Voltage Limit trip level. The load will disconnect from the device under test if the Voltage exceeds this level. VL <NR2> Command Syntax Example VL 16.5 This will set the Voltage Limit to 16.5 Volts. Query Syntax Returned Parameters TEXT ON: <NR2>...
Page 135 This command returns the XBL factory warranty expiration date. Command Syntax WARRDTE? WARRDTE? Example This will return the XBL factory warranty expiration date. WARRDTE? Query Syntax Returned Parameters TEXT ON: MMDDYYYY or MM-DD-YYYY TEXT OFF: MMDDYYYY or MM-DD-YYYY XBL Series 404078 Rev P2.odt Page 135 Of 162...
Page 136 WF Waveform Description This command is used to turn on and off Square Wave pulsing. It functions exactly the same as the SW command with all the same forms. This is done to provide compatibility with other model types. Command Syntax WF OFF Example This will turn on Square Wave pulsing until explicitly turned off.
Page 137 This turns off Remote Programming and resumes internal digitally programmed operation. Query Syntax Returned Parameters Text On: EXTERNAL MODULATION ON EXTERNAL MODULATION OFF Text Off: 1 (meaning On) 0 (meaning Off) XBL Series 404078 Rev P2.odt Page 137 Of 162...
Page 138: Status And Event Registers -Status Structure
Status and Event Registers —Status Structure The Status Logic illustration shows the logical relationship between the status registers. Three of the registers, the condition (CON) register, the error (ERR) register, and the status (STA) register reflect the condition of the load. Two of the registers, the fault shutdown mask (SDN) and the fault latch mask (LAT) control which of the condition register bits cause a load shutdown (shutdown mask) and/or are latched until read (latch mask).
Page 139 Range A numerical value either too low or too high has been received. Unrecognized A command has been received that is not in the loads syntax. XBL Series 404078 Rev P2.odt Page 139 Of 162...
Page 140: Glossary
Figure 10. Load Status Structure Glossary This glossary includes explanations and definitions of terms that may be found in this manual or encountered while working with the Dynaload. Many of these words are commonly used in electrical, electronic and computer related technologies. Page 140 Of 162...
Page 141 American Wire Gauge. A system that assigns a number value to the diameter of a wire. Base One terminal of a transistor that is usually the input lead. It separates the XBL Series 404078 Rev P2.odt Page 141 Of 162...
Page 142 collector and emitter regions of a transistor. Battery DC voltage source containing two or more cells that convert chemical energy to electrical energy. Baud Unit of signaling speed equal to the number of signal events per second. Binary System based on the number 2. (The binary digits are 0 and 1.) Binary-Coded Code for representing decimal digits in a binary format.
Page 143 Any source of DC power for electrical equipment. DC Power Supply Digital Branch of electronics dealing with information in binary form. Electronics Distortion Amount by which a circuit or component fails to accurately reproduce the XBL Series 404078 Rev P2.odt Page 143 Of 162...
Page 144 characteristics of the input. Duplex Ability to both send and receive data at the same time over the same communications line. Transmission Earth Ground. Connection to the earth itself or the negative lead to a chassis or to any point to zero voltage. Direction in which electrons flow (from negative to positive since electrons Electron Flow are negatively charged).
Page 145 Usually the hardware that provides communication between various items of equipment using common physical interconnection characteristics, signal characteristics, and meanings of interchanged signals. Inverter A device used to convert direct current into alternating current. Input/Output. XBL Series 404078 Rev P2.odt Page 145 Of 162...
Page 146 Kilowatt - hour Unit of energy when one kilowatt of power is expended for one hour. Leakage Passage of small electric current through an insulator or dielectric that is unintended and undesirable. Light-emitting diode, a semi-conductor that emits light, used in displays such as meters, clocks and calculators.
Page 147 When the contacts of a switch or relay are normally open or not connected. Normally Open When activated the contacts close or are connected. Transistor using n-type p-type n-type semiconductor material. XBL Series 404078 Rev P2.odt Page 147 Of 162...
Page 148 Ω Unit of resistance (represented by the Greek capital letter omega “ ” and  the symbol “R”). I=V/R where I is the current flowing, V is the voltage and R is the Ohm's Law resistance. Circuit having an incomplete path for current flow. Open Circuit Electronic instrument that produces an instantaneous trace on the screen of Oscilloscope...
Page 149 The ratio of power absorbed to power delivered. Electrical equipment used to deliver either voltage (either AC or DC). Power Supply Transistor using p-type, n-type, n-type semiconductor material. Printed Wiring Board. See also PCB. XBL Series 404078 Rev P2.odt Page 149 Of 162...
Page 150 Real Time Data that is immediately acted upon rather than being accumulated and processed at a later time. Rectifier AC-to-DC converter with output typically connected in parallel with battery backup. A power supply that maintains a constant output voltage under changing Regulated Power Supply load conditions.
Page 151 Surge Current The high charging current that flows into a power supply filter capacitor when power is first turned on. Switch Device for connecting and disconnecting power to a circuit. XBL Series 404078 Rev P2.odt Page 151 Of 162...
Page 152 Telemetry Usually refers to transmission of alarm, status, and other information by an embedded data channel multiplexed into a digital bit stream. Terminal A point at which electrical connections are made. Test A methodical sequence of operations or steps intended to verify the correct operation or malfunctioning of a piece of a system or piece of equipment.
Page 153 A circuit or device that maintains a constant output voltage even when there is changing line voltage and/or load current. Regulator Circuit or device that supplies voltage to a load. Voltage Source XBL Series 404078 Rev P2.odt Page 153 Of 162...
Page 154: Setting Up Ethernet Communications
Watt Unit of power. One watt is the product of one volt and one amp (represented by the symbol “W”). Wattage An amount of power, especially electric power, expressed in watts or kilowatts. Also, the electric power required by an appliance or a device. The maximum amount of power a device can continuously safely handle.
Page 155 Please note that Telnet capability is also available at this address on port 23. TCP Communications The XBL will accept commands sent via TCP. The destination address is defined via the IP command (192.168.1.10 default) and PORT command (9760 default). XBL Series 404078 Rev P2.odt Page 155 Of 162...
Page 156: Chapter 4. - Appendix A - List Of Commands
Chapter 4. — Appendix A — List of Commands AV1 <NR2> P1 <NR2> T1 <NR2> AV2 <NR2> P2 <NR2> T2 <NR2> AVH <NR2> PL <NR2> TEXT OFF AVL <NR2> R1 <NR2> TEXT ON CI <NR2> R2 <NR2> UV <NR2> CP <NR2> RNG <NR1>...
Page 157: Appendix C - Outline Drawings By Model
Appendix C — Outline Drawings by Model XBL Series 404078 Rev P2.odt Page 157 Of 162...
Page 158 CAUTION Page 158 Of 162...
Page 159 XBL Series 404078 Rev P2.odt Page 159 Of 162...
Page 160 Page 160 Of 162...
Page 161 Menu Commands................................28 Model Number.................................7 Modes of Operation................................7 Online Availability................................2 Operating..................................23 Operating Instructions..............................12 Operating Mode................................24 Ordering..................................... Parts.....................................2 Parallel Operation................................25 PC Control..................................42 Power-on Defaults................................46 Programmable Under Voltage............................28 Pulse Mode.................................8, 31 Queries...................................46 Range Switching................................25 XBL Series 404078 Rev P2.odt Page 161 Of 162...
Page 162 Rear Panel Description..............................13 Remote or External Programming..........................18 Remote Programming..............................27 Short Circuit...................................26 Terminal Block................................16 Trademarks..................................2 Transconductance................................34 Troubleshooting................................36 Voltage Sense.................................19 Page 162 Of 162...

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TDI XBL Series Operation & Programming Manual

Chapter 1. - Overview

Chapter 2. - Operating Instructions

Chapter 3. - PC Control Using IEEE-488 Commands and Programming

Chapter 4. - Appendix A - List of Commands

Appendix B - List of Queries

Appendix C - Outline Drawings by Model

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