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4 - Instrument Overview

QPX750 Instruction Manual

4.2

Rear Panel

①

AC power inlet

②

GPIB (optional)

Requires GPIB 1A user retrofittable option.

The default GPIB address is 11.

③

LAN

The LAN interface is designed to meet 1.5 LXI (LAN extensions for Instrumentation) Core 2016.

Remote control using the LAN interface is possible using a TCP/IP Socket protocol.

④

USB

The USB port accepts a standard USB cable. The Windows plug-and-play functions should

automatically recognise that the instrument has been connected.

⑤

Terminal Block

Press the orange actuators of the screwless terminals, insert the

connecting wire and release the actuator to secure the connection.

NOTE

Minimum recommended cable 0.4mm, maximum. 0.8mm diameter

cable. Always use shrouded ferrules to prevent the risk of shock.

Logic Control: LOGIC COMMON, LOGIC IN, LOGIC OUT, NC (no connection) see ‘Logic Control’

for setup

and configuration details. LOGIC IN is connected to the input of an isolating opto-coupler via an 820

Ω

resistor in series. The input is activated by an input voltage greater than approximately 3.3V between

LOGIC IN and LOGIC COMMON
LOGIC OUT is an isolated rear-panel open-collector output that will sink up to 2mA when active

CAUTION

Do not apply an input voltage greater than 20V.
Do not apply volts greater than 30Vdc to LOGIC OUT

Analog Control / Monitor: I CONTROL, V CONTROL, COM, COM, I MONITOR, V MONITOR See ‘Analog

Control’ for setup and configuration details.

Содержание QPX750SP

Страница 1: ...INSTRUCTION MANUAL EN INSTRUCTION MANUAL QPX750SP 750W Laboratory Power Supply ...

Страница 2: ...20 6 3 Interface 21 6 4 Messages 22 6 5 Info 23 6 6 Help 23 6 7 File Ops 23 6 8 Defaults 24 6 9 Calibration 24 7 Messages 25 7 1 Error Messages 25 7 2 Warning messages 25 7 3 Information messages 25 8 Maintenance 26 8 1 Cleaning 26 8 2 Firmware update 27 9 Remote Operation 28 9 1 USB Interface 28 9 2 LAN Interface 29 9 3 GPIB Interface 31 9 4 Status Reporting 32 9 5 Remote local operation 36 9 6 P...

Страница 3: ...easuring rapidly varying loads This versatile power supply offers Analog and Digital interface for remote control and Test System integration Remote Communication is Standard with 2 interfaces USB and LAN An optional GPIB interface is also available Analog inputs provide remote control of the output volts and current while Analog outputs provide monitoring of the output Voltage and current Digital...

Страница 4: ...he manual to ensure the safety of the user and the instrument all information must be read before proceeding WARNING Indicates a hazard that if not avoided could result in injury or death CAUTION Indicates a hazard that could damage the product and may result in loss of important data or invalidation of the warranty NOTE Indicates a helpful tip EXAMPLE Indicates an example to show further details ...

Страница 5: ...uption of the mains earth connector inside or outside will make the instrument dangerous Intentional interruption is prohibited Any adjustment maintenance and repair of the opened instrument under voltage must be avoided When connected terminals may be live and opening the covers or removal of parts except those that can be accessed by hand may expose live parts Voltages above 60VDC are hazardous ...

Страница 6: ...round the instrument and or use a fan tray for forced cooling 3 3 Electrical Requirements 3 3 1 Mains operating voltage This instrument has a universal input range and will operate from a nominal 115V to 230V mains supply without adjustment Check that the local supply meets the AC input requirement given in the Specification 3 3 2 Mains lead Connect the instrument to the AC supply using the mains ...

Страница 7: ...ey is also used to clear output trip conditions together with their pop ups Additionally when in remote mode this key is used to return the instrument to local operation The OK key is used to confirm a selection Remote Sense Terminals Allows the user to adjust the voltage at the point of the load The instrument has a very low output impedance but this is inevitably increased by the resistance of t...

Страница 8: ...apable of supporting the current required for 50 Amps 6mm2 cable is needed WARNING Voltages above 60VDC are hazardous live according to EN 61010 1 and great care must be taken when using the power supply at voltages above this level Always make connections to the instrument with the OUTPUT off CAUTION Exceeding the maximum reverse voltage 90V and current 3A will damage the unit Volts Amps Lock Pre...

Страница 9: ...he actuator to secure the connection NOTE Minimum recommended cable 0 4mm maximum 0 8mm diameter cable Always use shrouded ferrules to prevent the risk of shock Logic Control LOGIC COMMON LOGIC IN LOGIC OUT NC no connection see Logic Control for setup and configuration details LOGIC IN is connected to the input of an isolating opto coupler via an 820Ω resistor in series The input is activated by a...

Страница 10: ... limited common mode range of 2 5Vdc with respect to the negative output They should be connected to a measuring system with floating inputs such as a DMM Do not apply volts greater than 20VDC to ANALOG CONTROL terminals with respect to COM Output Remote Sense S S See Remote Sense Terminals for more details WARNING ANALOG CONTROL MONITOR and SENSE terminals are referenced to the output negative Ou...

Страница 11: ...ughout this manual the navigation through menus will be shown at the top of a section using the following format Menu Sub Menu Option NOTE The pop up screens for parameters will only occur when using the touch screen Trip System Failure Error and Warning pop up screens will appear when using any form of navigation 5 2 Switching on Connect the instrument to the AC supply using the mains lead provid...

Страница 12: ...switching from 50V to 80V range the set point will be rounded down to the nearest 2mV figure e g if output is set to 49 997 it will be changed to 49 996 Plim Set the power limit this can also be used to regulate the power being delivered by the unit 100W to 750W in 10W increments OVP Set the Over Voltage Protection limit Protects against dangerously high voltages 2V to 90V OCP Set the Over Current...

Страница 13: ...splay 18V 36A and 648W CC mode 1Ω load display 27V 26A and 720W CP mode Protection The OVP or OCP circuits will trip if an excessive voltage or current is accidentally set from the front panel via a remote control interface or is the result of a failure in the control circuitry of the instrument itself OVP will also trip if an excessive voltage is impressed across the terminals from an external so...

Страница 14: ...ill then be shown in Grey 5 4 2 Load Impedance and power calculations When the output is on calculated load impedance Ω and output power W can be viewed on the meter underneath the voltage and current readings Power only on Home Screen The calculated load impedance function enables low resistance measurements to be made at high currents e g RDS on of power MOSFETs by creating a four terminal conne...

Страница 15: ...nt removes the message pressing OK will remove the pop up but SNS Trip will remain in the status bar The display will now show the pre set voltage and current limit When the cause of the trip has been corrected the output can be turned on again Remote status REM This symbol will appear once the instrument starts to receive communications from any of the remote interfaces This symbol will appear if...

Страница 16: ...ype this could be a numeric keypad QWERTY keypad or unique options related to that field See appropriate menus for more details 5 6 2 Front Panel Keys Use the keys to highlight the actionable field and press OK When editing a numeric field pressing a number key will begin editing other field type options can be viewed using the rotary encoder press the OK key to action the change To directly edit ...

Страница 17: ...ON State These editable parameters determine what setting the power supply switches on with NOTE Always Off and Default Params if a safe power up is required As Power Down and Latest Params If a long term test is running and the user wishes to restart automatically Output State Always Off Output will remain off until manually set As Power Down Output will reset at the previously set state when the...

Страница 18: ...th output voltage and output current Range Selected Sets the control voltage full scale range Used to control Vset Iset or V I 0 10V 0 5V EXAMPLE Setting Range to 50V Control type to V I and Range selected to 0 10V Supply 0 5 volts into VCONTROL with respect to COMMON from a floating source i e PSU Applying 0V will result in 0V appearing on the Output Terminals Applying 1V will result in 5V appear...

Страница 19: ... fault trip condition OVP OCP etc CP PSU operates in Constant Power regulation mode CC PSU operates in Constant Current regulation mode Logic In LOGIC IN is connected to the input of an isolating opto coupler via an 820Ω resistor in series The input is activated by an input voltage greater than approximately 3 3V between LOGIC IN and LOGIC COMMON Logic In has the following states Ignored Will not ...

Страница 20: ...raging settings Power on state Logic control settings Analog control settings The file name can be up to 8 characters and a combination of uppercase letters numbers and _ symbols 6 1 5 Recall Menu Instrument Recall Recall a previously saved instrument setup file from the Internal Storage Use the keys to choose The files can be sorted into alphabetical order using the file name s button The selecte...

Страница 21: ... keys to select the parameter window and press the knob to confirm The selection will flow from top to bottom left to right when turned clockwise When selected the parameter will turn blue with yellow text when confirmed the parameter will turn black with white text 3 State For selecting and editing parameters 3 State works in the same way as 2 State However the resolution digit can be selected wi...

Страница 22: ... 6 3 2 LAN Settings Menu Interface LAN Settings IP Configuration Method Manual Use Static IP settings Automatic Obtain the IP settings using DHCP or AutoIP To save these changes to the instrument press Apply To edit the Static IP settings select IPv4 Manual See Remote Operation for more details on LAN settings 6 3 3 USB Reset Menu Interface USB Reset Resets USB configuration to default setting 6 3...

Страница 23: ...mand over LAN GPIB or USB can be opened here select the message by using the keys and press View to open The two errors shown here will be Execution Errors These occur when the command has been accepted but the values provided are invalid The message will include details of the error and the command it is related to Command Errors These occur when the command is incorrect and has not been accepted...

Страница 24: ...in this manual will be displayed Using the keys choose a topic and press Select a general overview will be provided 6 7 File Ops Menu File Ops Any files that have been saved will appear in File Ops allowing the user to copy delete or rename them Use the keys to navigate and use either the encoder or the touch screen to open the file File Type Provides a brief description of the file type File Loca...

Страница 25: ...Instrument in addition to the PSU parameters to default System Will reset only the settings that have been changed in Menu System to default Interface Will reset only the settings changed in Menu Interface to default All All of the above settings will be reset to factory defaults 6 9 Calibration Menu Calibration The calibration menu is password protected to prevent unintentional adjustments For fu...

Страница 26: ...ck key or a lock command while this is active the front keyboard is disabled If there is a Critical System Failure they keys will lock and it is recommended to turn the instrument off immediately 7 2 Warning messages Warning messages will appear when a state or operation is activated that alters the way the instrument is used for example change to high voltage range 7 3 Information messages Inform...

Страница 27: ...ld only be done by skilled personnel in conjunction with the Service Manual which may be obtained directly from the manufacturer or their agents overseas 8 1 Cleaning If the instrument requires cleaning use a cloth that is only lightly dampened with water or a mild detergent WARNING To avoid electric shock or damage to the instrument never allow water to get inside the case To avoid damage to the ...

Страница 28: ...w aimtti com 3 Once downloaded unzip the file and run the File Transfer Utility application 4 Within the File Transfer Utility application select File and Open 5 Open the QPX750 ttiupd file 6 Select Start Update Once all the files have transferred successfully a pop up will appear asking for an instrument power cycle 7 Manually power cycle the instrument and the instrument firmware will update NOT...

Страница 29: ...ocation of a suitable driver Follow the Windows prompts and point to the downloaded driver file named USB_ARM_VCP_xxx INF where xxx is a version number In some cases Windows will not complete this procedure especially recent versions which search the internet first looking for the unique Vendor ID and Product ID in which case the instrument will show in Device Manager as not working properly If th...

Страница 30: ...the Interface button Then select LAN Status and the assigned IP settings will be shown on the second page of the displayed menu Alternatively Windows PC software tools such as the LXI Discovery Tool may be used find all LXI compliant devices on the network The latest version of the LXI Discovery Tool can be downloaded from www lxistandard org Note that older versions of the LXI Discovery Tool may ...

Страница 31: ...ce name For example an instrument at IP address 192 168 1 100 would normally have a VISA resource name of TCPIP0 192 168 1 100 inst0 INSTR but for this instrument the name must be modified to read TCPIP0 192 168 1 100 5025 SOCKET where 5025 is the scpi raw TCP port used by this instrument for control and monitoring 9 2 6 XML identification document URL As required by the LXI Standard the instrumen...

Страница 32: ...the parser to be reset See Status reporting section for further information The IEEE 488 2 INTERRUPTED error is handled as follows If the response formatter is waiting to send a response message and a PROGRAM MESSAGE TERMINTOR has been read by the parser or the input queue contains more than one END message then the instrument has been INTERRUPTED and an error is generated This will cause the Quer...

Страница 33: ...se bit 0 low 1 high Bit 2 bit position of the response Bit 1 Bit 0 EXAMPLE To return the RQS bit bit 6 of the Status Byte Register as a 1 when true and a 0 when false in bit position 1 in response to a parallel poll operation send the following commands PRE 64 pmt then PPC followed by 69H PPE The parallel poll response from the instrument will then be 00H if RQS is 0 and 01H if RQS is 1 9 4 Status...

Страница 34: ...Bit 7 Power On Set when power is first applied to the instrument Bit 6 Not used Bit 5 Command Error Set when a syntax type error is detected in a command from the bus The parser is reset and parsing continues at the next byte in the input stream Bit 4 Execution Error Set when an error is encountered while attempting to execute a completely parsed command The appropriate error number will be report...

Страница 35: ...ircumstances 9 4 3 Limit Event Status and Limit Event Status Enable Registers This pair of registers are implemented for each output as an addition to the IEEE Std 488 2 Their purpose is to inform the controller of entry to and or exit from current or voltage limit conditions and the history of protection trip conditions since the last read Any bits set in the Limit Event Status Register LSR N whi...

Страница 36: ...the STATus OPERation ENABle register Bit 6 RQS MSS This bit as defined by IEEE Std 488 2 contains both the Requesting Service message and the Master Status Summary message RQS is returned in response to a Serial Poll and MSS is returned in response to the STB command Bit 5 ESB The Event Status Bit This bit is set if any bits set in the Standard Event Status Register correspond to bits set in the S...

Страница 37: ...ine In this state the front panel user interface can still be navigated but no changes to parameters are possible The instrument may be returned to the local state by pressing the LOCAL key however the effect of this action will only remain until the instrument receives another character from the interface when the remote state will once again be entered Returning to Local by this action will keep...

Страница 38: ...mixture of letters or numbers but up to 8 characters long only SRE NRF Sets the Service Request Enable Register to NRF SRE Return the value of Service Request Enable Register in NR1 numeric format The syntax of the response is NR1 ESE NRF Set the Standard Event Status Enable Register to the value of NRF ESE Return the value in the Standard Event Status Enable Register in NR1 numeric format The syn...

Страница 39: ...between the short and long form version of keywords EXAMPLE The following command is used to set the Voltage of DC Output to 10V SOURce VOLTage LEVel IMMediate AMPLitude 10 The above command can also be executed in below listed formats and they all will set the volts to 10 in this case SOUR VOLT LEV IMM AMPL 10 SOUR VOLT LEV IMM 10 SOUR VOLT LEV 10 SOUR VOLT 10 VOLT 10 Multiple SCPI commands can b...

Страница 40: ...d for instrument control and monitoring This instrument used the standard scpi raw port 5025 SYSTem COMMunicate LAN IDENtify STATE Bool Enable and disable the LAN Identify feature Setting this to true will cause the connected instrument display to flash until reset to false OFF ON 0 1 SYSTem COMMunicate LAN RESet Return all LAN settings to the default values and restart the network connection SYST...

Страница 41: ...ommands in the SYSTem COMMunicate LAN subsystem and restart the network connection SYSTem BEEPer Bool Set all system buzzer settings to OFF ON 0 1 The query response is a comma separated list of the states of the error warning info key touch and remote buzzers SYSTem BACKLight NR1 Set the LCD backlight brightness to SYSTem THEMe CPD Set the system display colour theme to THEMe1 THEMe2 THEMe3 THEMe...

Страница 42: ...gth of 8 characters 9 9 4 SOURce Subsystem SOURce VOLTage LEVel IMMediate AMPLitude NRF Set the output voltage to NRF NV UV MV KV MAV SOURce VOLTage VERify LEVel IMMediate AMPLitude NRF Set the output voltage to NRF NV UV MV V KV MAV with Verification SOURce CURRent LEVel IMMediate AMPLitude NRF Set the output current limit to NRF NA UA MA A SOURce POWer LEVel IMMediate AMPLitude NRF Set the power...

Страница 43: ...rement the voltage by step size SOURce CURRent LEVel IMMediate INCrement Increment the current by step size SOURce CURRent LEVel IMMediate DECrement Decrement the current by step size SOURce VOLTage VERify LEVel IMMediate INCrement Increment the voltage by step size with verification SOURce VOLTage VERify LEVel IMMediate DECrement Decrement the voltage by step size with verification OUTPut Subsyst...

Страница 44: ...e Output State Always Off Power on State Latest Params Analog Control Control Type None Range Selected 0 10V Logic Control Logic In Ignored Logic Out Closed for Output ON System Brightness 40 Colour Theme Theme 1 Encoder State Adjust 2 State Buzzer On LAN Config Method Automatic LAN IPv4 Manual IP Address 192 168 1 100 Subnet Mask 255 255 255 0 Gateway 0 0 0 0 Pri DNS Server 0 0 0 0 Sec DNS Server...

Страница 45: ...tween local and remote Screwless remote sense terminals on both front rear panels Sense miswiring trip and indication Ripple Noise 20MHz bandwidth Typically 3mVrms 20mV pk pk at maximum load CV mode Load Regulation Change in output for any load change within PowerFlex envelope using remote sense Constant voltage 0 01 5mV Line Regulation Change in output for a 10 line change Constant voltage 0 01 5...

Страница 46: ...ding to the selected input scaling similarly the monitor outputs are updated four times per second with values representing the actual output voltage and current These signals each have a range of 0 to 10V or 0 to 5V with respect to the shared COM return signal the set range applies to all inputs and outputs Analog Control Voltage Range Keyboard selectable to be 0 to 10Vdc or 0 to 5Vdc for range m...

Страница 47: ...488 2 Remote Command Processing Time Typically 100ms between receiving the command terminator for a step voltage change at the instrument and the output voltage beginning to change 11 3 2 GENERAL AC Input 115V 240V AC 10 50 60Hz Installation Category II Power Consumption 1000VA max Operating Range 5ºC to 40ºC 20 to 80 RH Storage Range 40ºC to 70ºC Environmental Indoor use at altitudes up to 2000m ...

Страница 48: ...QUALITY SYSTEMS TTi is an ISO9001 registered company operating fully traceable quality systems for all processes from design through to final calibration ISO9001 2015 Certificate number FM 20695 WHERE TO BUY AIM TTI PRODUCTS Aim TTi products are widely available from a network of distributors and agents in more than sixty countries across the world To find your local distributor please visit our w...

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