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11.1.2 RS232 Interface

The 9-way D-type serial interface connector is located on the instrument rear panel. It should be

connected to a standard PC port preferably using a fully wired 9 way 1:1 male-female cable

without any cross-over connections. Alternatively, a 3-way cable can be used, connecting only

pins 2, 3 and 5 to the PC, but with links made in the connector at the PC end between pins 1, 4

and 6 and between pins 7 and 8, as shown in the diagram:

Most commercial cables provide these connections.
In addition to the transmit and receive data lines, the instrument passively asserts pins 1 (DCD)

and 6 (DSR), actively drives pin 8 (CTS) and monitors pin 4 (DTR) from the PC. This allows the

use of a fully wired 9-way cable.
The Baud Rate for this instrument is fixed at 9600; the other parameters are 8 data bits, no

parity and one stop bit. Flow control uses the XON/XOFF protocol, but because of the low

volume of data associated with this instrument it is very unlikely that flow control will actually be

invoked.

11.1.3 USB Interface and Device Driver Installation

The instrument firmware can be updated in the field through the USB port. This does not need

the driver described here. It requires a PC software utility provided by the manufacturer, and

uses a HID driver that will already be installed on the PC. If that is the only USB functionality

required, download the package containing the firmware update together with the PC utility from

the manufacturer, and follow the instructions included.
Using the USB interface for remote control requires a Communications Device Class driver on

the PC to provide a virtual COM port instance. In Windows a suitable driver is provided by

Microsoft, but it is not installed by default. The data (.INF) file to control the installation is

provided on the Product Documentation CD delivered with the unit; however, the same driver is

also used by many other instruments from this manufacturer and may already be known to the

PC.
To install the driver for the first time, first switch the unit on, and then connect the USB port to

the PC. The Windows plug and play functions should automatically recognise the attachment of

new hardware to the USB interface and (possibly after searching the internet for some time)

prompt for the location of a suitable driver. Follow the Windows prompts and point to the CD,

then the sub-directory for this product, and then to the USB Driver sub-directory below that. The

file is named USB_ARM_VCP_xxx.INF, where xxx is a version number. (A readme.pdf file will

also be found in that directory if further assistance is needed.)
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”.

Содержание MX100Q

Страница 1: ...MX100Q MX100QP Triple Output Multi Range DC Power Supply INSTRUCTION MANUAL ...

Страница 2: ... Voltage and Over Current protection 13 6 6 Setting the Voltage Current Range 13 6 7 Store and Recall of Settings 14 6 8 The System Menu Screen 14 6 9 Voltage Tracking 14 7 Display Symbols 15 8 Menu Advanced Functions 16 8 1 Setting Voltage Tracking 16 8 2 Current Meter Averaging Setup 17 8 3 Store and Recall of Settings for All Outputs 17 8 4 Multi On Multi Off Operation and Sequencing 17 8 4 1 E...

Страница 3: ...ddress and Hostname 27 11 1 6 Interface Locking 28 11 1 7 Status Reporting 28 12 Remote Commands MX100QP only 34 12 1 General 34 12 1 1 Remote and Local Operation 34 12 1 2 Remote Command Handling 34 12 1 3 Remote Command Formats 34 12 1 4 Command Timing 35 12 1 5 Response Formats 35 12 2 Command List 35 12 2 1 Instrument Function Commands 35 12 2 2 Common Commands 37 12 2 3 Status Commands 38 12 ...

Страница 4: ...backlit graphic LCD and control is via soft keys together with a numeric keypad and spin wheel Advanced features include 50 settings memories for each output plus 50 further memories that record the settings for all four outputs together Multi On and Multi Off keys supplement the individual output On Off keys and can be programmed to turn the outputs on or off in a timed sequence The front panel c...

Страница 5: ...0V 1 5A 35V 6A 35V 3A 35V 3A 35V 6A 35V 3A 35V 3A 35V 6A 35V 3A 70V 1 5A 35V 6A 35V 3A 70V 1 5A 35V 6A 16V 6A 35V 3A 35V 6A 16V 6A 35V 3A 35V 6A 16V 6A 70V 1 5A 35V 6A 16V 6A 70V 1 5A 35V 6A 35V 3A 35V 3A 35V 6A 70V 1 5A 35V 3A 35V 6A 35V 3A 70V 1 5A 35V 6A 70V 1 5A 70V 1 5A 35V 6A 35V 3A 35V 3A 35V 6A 70V 1 5A 35V 3A 35V 6A 35V 3A 70V 1 5A 35V 6A 70V 1 5A 70V 1 5A 35V 3A 35V 3A 70V 3A 16V 6A 35V ...

Страница 6: ...tension cord without a protective conductor When the instrument is connected to its supply terminals may be live and opening the covers or removal of parts except those to which access can be gained by hand is likely to expose live parts The apparatus shall be disconnected from all voltage sources before it is opened for any adjustment replacement maintenance or repair Capacitors inside the power ...

Страница 7: ...e the instrument dangerous Intentional interruption is prohibited 3 3 Mounting This instrument is suitable both for bench use and rack mounting It is delivered with feet for bench mounting The front feet include a tilt mechanism for optimal panel angle A rack kit for mounting in a 19 rack is available from the manufacturers or their agents and distributors overseas 3 4 Ventilation The power supply...

Страница 8: ...en remote sensing is required Switch back to LOCAL when remote sensing is not in use See section 10 2 for more information C The grey terminal marked with an Earth symbol is connected to the chassis and safety earth ground 4 2 Rear Panel Connections MX100QP D The MX100Q has only an AC power connection socket on the rear panel The MX100QP also has E Power and sense terminals F USB G RS232 H LAN I G...

Страница 9: ...her terminal of another output on the same power supply is also 300VDC WARNING Such voltages are exceedingly hazardous and great care should be taken by the user The front terminals are intrinsically touch proof but hazard may still exist depending upon the type of connection made to the terminal On no account should the connections be touched under such use For the MX100QP only voltages appearing...

Страница 10: ... the default behaviour is for all the outputs to be set to off However the user can change this default setting such that the outputs are restored to their condition when the instrument was switched off This change is made from System Preferences see section 9 1 3 Soft Keys The function of these keys change as the instrument is operated The current function is shown on the LCD in a box above each ...

Страница 11: ...l changes to settings Note Individual output screens and the home screen can still be viewed but not edited The Lock key disables the front panel This is indicated by the key being illuminated in green Once locked any key press creates a warning message on the display To unlock the front panel press and hold the Lock key for more than one second For additional security it is also possible to lock ...

Страница 12: ...er to be adjusted The user can move freely between setting voltage or current for any output by pressing the appropriate key Pressing the same key again or pressing ESC Escape cancels the key and disables all setting capability 6 Power Supply Settings The procedures for setting voltage and current either numerically or via the spin wheel have been explained in the previous section 6 1 CV and CC mo...

Страница 13: ...tatus for the output is shown below them The eight soft keys are used to set voltage and current Vset and Iset over voltage and over current protection levels OVP OCP current meter averaging Iavg range selection Range and store or recall of settings Stores Setting voltage or current is as previously described for the Home screen see section 5 3 6 3 Power Display VxA The power being supplied to the...

Страница 14: ... controlling OCP Note that when set to OFF the function is not completely disabled but is set to the maximum value for the output Thus if OVP was set to OFF on output 1 and an external voltage greater than 40V was applied to the terminals an OVP trip would occur More information on using OVP and OCP is provided in section 10 7 6 6 Setting the Voltage Current Range Range Each output has more than o...

Страница 15: ...y when the Recall key is pressed Note that if the recalled range is different from the present range the output will be automatically turned off The contents of a particular location can be deleted by pressing the Delete soft key A confirmation is required From the Delete confirmation screen it is also possible to delete the contents of all 50 locations by pressing Del All A confirmation is requir...

Страница 16: ... V Track ON or OFF shown on top line plus Master or Slave Multi On Multi Off not set to defaults set to Delayed or Never Clock symbol on top line next to the mode indication for the affected output Clock symbol on top line Power supply under remote control MX100QP only REM shown at top right hand side REM shown at top right hand side LAN connection status MX100QP only LAN symbol shown at top right...

Страница 17: ...ly independent However it is possible to make the voltage of an output always equal to the voltage set on another output This is called voltage tracking Tracking voltages can be useful in setting up adjustable voltages of equal or opposite polarity or when outputs are wired in parallel or in series Three alternative voltage tracking arrangements are possible Mode 1 Output 2 tracks Output 1 Mode 2 ...

Страница 18: ...listed on successive rows The output On Off state is included in order to allow memories to be recalled in sequence including the turning of outputs on or off Note that recalling a memory will override the existing On Off state and this should be considered when setting up the power supply prior to storing each status entry Current meter averaging being set on is indicated by the symbol after the ...

Страница 19: ...nger delays it will continue to flash until the sequence is completed Where the longest delay is below approximately 250ms the key may not flash at all 8 4 1 Emergency Off When an Off sequence that includes long delays is in progress a second press of the Multi Off key will turn all four outputs off immediately including any outputs omitted from the sequence i e set to Never Thus a double press or...

Страница 20: ...naffected 8 8 Adjusting LCD Contrast Menu Adjust LCD Contrast The LCD contrast can be adjusted over a wide range The setting is displayed numerically as a percentage The display can also be inverted from black on white to white on black 8 9 Calibration Menu Calibration The Calibration function enables the instrument to be re calibrated when required Calibration will overwrite the existing settings...

Страница 21: ...he instrument was powered down The default behaviour also returns the settings set volts set current range etc to those that existed at power down This can be changed so that the settings are always at factory defaults see section Error Reference source not found This includes all outputs being set to Off 9 2 Alert Sound Beep Set beep Disable beep An alert sounder is incorporated that produces a b...

Страница 22: ... the remote sense capability This requires the sense terminals to be connected to the output at the load instead of at the source by inserting wires into the SENSE terminals and connecting them directly to the load The switch should then be set to REMOTE instead of LOCAL To avoid instability and transient response problems care must be taken to ensure good coupling between each output and sense le...

Страница 23: ...ench power supplies a capacitor is connected across the output to maintain stability and good transient response This capacitor charges to the output voltage and short circuiting of the output will produce a current pulse as the capacitor discharges which is independent of the current limit setting 10 6 Output On Off and Response Speed The output On Off control of the power supply is entirely elec...

Страница 24: ...etting The response speed is 0 5s Control of OCP is described in section 0 OCP might be used to guard against accidental mis setting of the power supply or might be used to identify a fault condition when operating in constant voltage mode Unlike the current limit setting exceeding the OCP will turn the output off in a situation where damage to the device under test might otherwise occur 10 7 1 OC...

Страница 25: ...Lan eXtensions for Instrumentation version 1 4 LXI Core 2011 Remote control using the LAN interface is possible using the TCP IP Sockets protocol The instrument also contains a basic Web server which provides information on the unit and allows it to be configured from a web browser Simple command line control from the browser is also possible 11 1 1 GPIB Interface optional The standard GPIB interf...

Страница 26: ... that is the only USB functionality required download the package containing the firmware update together with the PC utility from the manufacturer and follow the instructions included Using the USB interface for remote control requires a Communications Device Class driver on the PC to provide a virtual COM port instance In Windows a suitable driver is provided by Microsoft but it is not installed...

Страница 27: ...XI standards refer to www lxistandard org When powered up and attached to a network the unit will by default attempt to obtain IP address and netmask settings via DHCP or if DHCP times out after 30 seconds via Auto IP In the very unlikely event that an Auto IP address cannot be found a static IP address is assigned the default is 192 168 0 100 but this can be changed on the web page Connecting via...

Страница 28: ...he Configure page itself explains how to set the password The password can be up to 15 characters long note that the User Name should be left blank The password and hostname will however be reset to the default no password if the rear panel LAN reset switch is used to reset all the LAN parameters to their factory default LAN Identify The instrument s main web page has an Identify function which al...

Страница 29: ...er the control of two interfaces at once a simple lock and release mechanism is provided in the instruction set The lock is automatically released where it is possible to detect disconnection or when the Local key is pressed Access to the interfaces may also be restricted using the web pages Any interface may request to have exclusive control of the instrument by sending an IFLOCK 1 command The lo...

Страница 30: ... 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 which correspond to bits set in the Limit Event Status Enable Register LSE N will cause the LIM N bit to be set in the Status By...

Страница 31: ...EER command On power up this register is set to 0 for all interface instances There is no corresponding mask register if any of these errors occurs then bit 4 of the Standard Event Status Register will be set This bit can be masked from any further consequences by clearing bit 4 of the Standard Event Status Enable Register Status Byte Register STB and GPIB Service Request Enable Register SRE These...

Страница 32: ...F command and read by the PRE query specifies which bits in the Status Byte Register are to be used to form the ist local message If any bit is 1 in both the STB and the PRE then ist is 1 otherwise it is 0 The state of the ist message can also be read directly by the IST query The physical layer protocol of the Parallel Poll determining which data line is to be driven and its logic sense is config...

Страница 33: ...0 SRE Service Request Enable Register 0 PRE Parallel Poll Response Enable Register 0 Registers marked thus are normally only used through the GPIB interface The instrument will be in local state with the keyboard active By default the instrument settings at power on are the same as at the last switch off and the outputs are off These parameters may be configured by the user to allow outputs to be ...

Страница 34: ...Page 33 Status Model ...

Страница 35: ...or query is complete Responses are sent to the interface which issued the query There is no internal output queue so on the GPIB interface the response formatter will wait indefinitely if necessary until the complete response message has been read by the controller before the parser is allowed to start the next command in the input queue On all other interfaces the response message is immediately ...

Страница 36: ...ands list below Most responses consist of a keyword followed by either text or a number in one of the following formats NR1 An integer without a decimal point or a unit NR2 A fixed point number with a fractional part but no exponent part NR3 A floating point number with both a fractional part and an exponent part CRD Character Response Data consisting of the text characters listed N The number of ...

Страница 37: ...current step size of output N Response is DELTAI N NR2 RMT where NR2 is in Amps INCV N Increment the output N voltage by step size INCV N V Increment the output N voltage by step size with verify DECV N Decrement the output N voltage by step size DECV N V Decrement output N voltage by step size with verify INCI N Increment the output N current limit by step size DECI N Decrement the output N curre...

Страница 38: ...N N CPD Set output N Multi On action where CPD can be QUICK NEVER or DELAY OFFACTION N CPD Set output N Multi Off action where CPD can be QUICK NEVER or DELAY SAV N NRF Save the current settings of output N to the store specified by NRF where NRF can be 0 49 RCL N NRF Recall the settings for output N from the store specified by NRF where NRF can be 0 49 12 2 2 Common Commands IDN Returns the instr...

Страница 39: ...Does not clear any Enable Registers LSR N Query and clear the Limit Status Register N The response format is NR1 RMT See Status Reporting section for details of the response LSE N NRF Set the Limit Status Enable Register N to NRF LSE N Returns the value in the value in the Limit Status Enable Register N The response format is NR1 RMT EER Query and clear Execution Error Register The response format...

Страница 40: ...n RMT where each nnn is 0 to 255 NETMASK Returns the present netmask of the LAN interface provided it is connected The response is nnn nnn nnn nnn RMT where each nnn is 0 to 255 NETCONFIG Returns the first means by which an IP address will be sought The response is CRD RMT where CRD is DHCP AUTO or STATIC The following commands specify the parameters to be used by the LAN interface Note a power cy...

Страница 41: ...supply Remove the 2 cover securing screws at the rear and slide back and lift off the cover Replace the fuse with one of the correct type and refit the cover Note that the main function of the fuse is to make the instrument safe and limit damage in the event of failure of one of the switching devices If a fuse fails it is therefore very likely that the replacement will also blow because the supply...

Страница 42: ...dependent electronic switching with ON indication In addition Multi On and Multi Off keys permit the outputs to be switched on off synchronously Multi On Multi Off Action Individually settable delay between pressing of the Multi On or Multi Off key and the turning on or off of the respective output Delays settable between 10ms and 20 seconds Separate delays for On and Off can be set Outputs can al...

Страница 43: ... of reading 2 digits Current Resolution 0 1mA Accuracy 0 3 of reading 5 digits Current Meter Averaging User selectable On Off per output with High Medium or Low settings V x A O P1 O P2 5 digits Resolution 0 001W to 100W 0 01W above 100W O P3 and O P4 5 digits Resolution 0 01W Accuracy 0 5 of reading 3 digits SETTING MEMORY STORES Stores for Individual Outputs 50 store positions for each output Va...

Страница 44: ...N Ethernet 100 10base T hardware connection 1 4 LXI Core 2011 GPIB Conforms with IEEE488 1 and IEEE488 2 Remote Command Processing Time Typically 120ms 80ms min 160ms max between receiving the command terminator for a step voltage change at the instrument and the output voltage beginning to change GENERAL AC Input 110V 240V AC 10 50 60Hz Installation Category II Power Consumption 650VA max Operati...

Страница 45: ...d 4 Current meter averaging Off Level Medium Voltage tracking None Output On Off Off Multi On Off action All Quick synchronous on synchronous off System Level Settings Power up state Settings as at power down all outputs off Beep sound Enabled for key errors and trips Disabled for entry into CC mode Spin wheel action Normal The default values can be restored from the Reset to factory Defaults func...

Страница 46: ...ingdon Cambridgeshire PE29 DR England United Kingdom Telephone 44 0 1480 412451 Fax 44 0 1480 450409 International web site www aimtti com UK web site www aimtti co uk USA web site www aimtti us Email info aimtti com Aim Thurlby Thandar Instruments Aim TTi ...

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