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Page 39

14.2.4

Interface Management Commands

LOCAL

Go to local. Any subsequent command will restore the remote state.

IFLOCK
<

NRF

>

Set or Clear the lock requiring the instrument to respond only to this
interface, where <

NRF

> has the meaning: 0 = clear and 1 = set the lock.

It is an Execution Error (number 200) if the request is denied either because
of conflict with a lock on this or another interface, or the user has disabled
this interface from taking control using the web interface.

IFLOCK?

Query the status of the interface lock.
The response is: <

NR

1><

RMT

> where <

NR

1> is

= 0 if there is no active lock,
= 1 if this interface instance owns the lock or
= -1 if the lock is unavailable either because it is in use by another interface
or the user has disabled this interface from taking control (via the web
interface).

ADDRESS?

Returns the GPIB bus Address. The response is <

NR

1><

RMT

>.

IPADDR?

Returns the present IP address of the LAN interface, provided it is
connected.
If it is not connected, the response will be the static IP if configured to
always use that static IP, otherwise it will be 0.0.0.0 if waiting for DHCP or
Auto-IP.
The response is nnn.nnn.nnn.nnn<

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 cycle is required after these commands are sent before the new settings are used (or
returned in response to the queries listed above). The instrument does not attempt to check the
validity of the IP address or netmask in any way other than checking that each part fits in 8 bits.
The rear panel LAN RESET switch will override these commands and restore the defaults as
described earlier.

NETCONFIG
<

CPD

>

Specifies the first means by which an IP address will be sought.
<

CPD

> must be one of DHCP, AUTO or STATIC.

IPADDR
<QUAD>

Sets the potential static IP address of the LAN interface (as on the
webpage).
The parameter must be strictly a dotted quad for the IP address, with each
address part an <

NR

1> in the range 0 to 255, (e.g. 192.168.1.101).

NETMASK
<QUAD>

Sets the netmask to accompany the static IP address of the LAN interface.
The parameter must be strictly a dotted quad for the netmask, with each
part an <

NR

1> in the range 0 to 255, (e.g. 255.255.255.0).

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Summary of Contents for MX100T

Page 1: ...MX100T MX100TP Triple Output Multi Range DC Power Supply INSTRUCTION MANUAL ...

Page 2: ...wing Settings Limits 11 7 2 Setting with Individual Output Screens 11 7 3 Power Display VxA 12 7 4 Selecting Current Meter Averaging 12 7 5 Setting Over Voltage and Over Current protection 12 7 6 Setting the Voltage Current Range 13 7 7 Store and Recall of Settings 13 7 8 The System Menu Screen 14 7 9 Voltage Tracking 14 7 10 Locking the Front Panel 14 8 Display Symbols 15 9 Menu Advanced Function...

Page 3: ... Configuration 24 12 2 1 GPIB Interface 25 12 2 2 RS232 Interface 25 12 2 3 USB Interface and Device Driver Installation 26 12 2 4 LAN Interface 26 12 2 5 LAN IP Address and Hostname 27 12 2 6 Interface Locking 28 12 2 7 Status Reporting 29 13 Remote Commands MX100TP only 34 13 1 General 34 13 1 1 Remote and Local Operation 34 13 1 2 Remote Command Handling 34 13 1 3 Remote Command Formats 34 13 1...

Page 4: ... jump back to continue reading the original section N B for hyperlink navigation within Acrobat Reader enable show all page navigation tools or use the keyboard shortcuts Alt Left Arrow and Alt Right Arrow The Table of Contents is also fully hyperlinked and is replicated within the Bookmarks pane Note The latest revisions of this manual device drivers and software tools can be downloaded from http...

Page 5: ...raphic 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 three 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 can be lo...

Page 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 ...

Page 7: ...r outside the instrument will make the instrument dangerous Intentional interruption is prohibited 4 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...

Page 8: ...nnected to other equipment resulting in the voltage appearing at a terminal being greater than the output voltage alone The maximum permissible voltage between any terminal and earth ground is 300VDC the maximum permissible voltage between either terminal of one output and either terminal of another output on the same power supply is also 300VDC WARNING Such voltages are exceedingly hazardous and ...

Page 9: ...e key turns the output on or off The on state is indicated by the key being illuminated in red At power up 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 10 1 Multi On Multi Off It is also ...

Page 10: ...oltage CC constant current or SET Settings SET is displayed when the output is off The two meters directly below show the set values for voltage and current when the output is off and the voltage and current being supplied to the load when the output is on With an output on the three lines below the meters show the set voltage Vset the set current Iset and the output range Range If the output is o...

Page 11: ... Setting with the Spin Wheel Vset Iset Voltage or current can alternatively be set using the spin wheel The wheel is disabled by default but can be enabled by pressing the key below it which toggles its action on or off When enabled the key is illuminated The wheel changes the output settings immediately no OK confirmation is required The wheel has a non linear action If it is moved slowly the val...

Page 12: ...laced next to it It is also possible to set an audible alert see section 10 2 Output Off When an output is off the meters show these set values and SET is shown on the top line of the display When an output is on the values of voltage generated and current flowing are shown together with CV or CC View Settings View Limits It is also possible to view the set values for all three outputs at any time...

Page 13: ...adjustable over voltage protection OVP and over current protection OCP If a voltage is detected that exceeds the OVP level or a current is detected that exceeds the OCP level the output is switched off and the message OVP or OCP is displayed OVP is adjustable between 1V and 40V for outputs 1 and 2 and between 1V and 80V for output 3 OCP is adjustable between 0 01A and 7A for outputs 1 and 2 and be...

Page 14: ...numbered from 00 to 49 with the currently selected line highlighted The location can be scrolled using the spin wheel or stepped through using the arrow keys It is also possible to jump directly to a location by entering a two digit number e g 07 or 45 Unused memory locations are shown by the word Empty Pressing the Store key writes the present settings of the output into the selected memory locat...

Page 15: ...he display Voltage tracking is selected from the System Menu see section 9 1 8 10 Locking the Front Panel Lock The front panel can be locked such that the power supply will not respond to any key presses This is in order to prevent an accidental changes to settings Pressing the Lock key disables the front panel This is indicated by the key being illuminated in green Once locked any key press creat...

Page 16: ...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 MX100TP only REM shown at top right hand side REM shown at top right hand side LAN connection status MX100TP only LAN symbol shown at top right hand side see note...

Page 17: ...ompletely 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 ...

Page 18: ...e 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 th...

Page 19: ...r 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 10 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 three outputs off immediately including any outputs omitted from the sequence i e set to Never Thus a double press or ...

Page 20: ...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 10 9 Calibration Menu Calibration The Calibration function enables the instrument to be re calibrated when required Calibration will overwrite the existing settings and should o...

Page 21: ...r condition when the 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 18 This includes all outputs being set to Off 11 2 Alert Sound Beep Set beep Disable beep An alert sounder is incorporated that produces a beep under s...

Page 22: ... 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 lead t...

Page 23: ...onnected 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 12 6 Output On Off and Response Speed The output On Off control of the power supply is entirely electronic The Off condition is achieved...

Page 24: ...f OCP is described in section 7 5 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 12 7 1 OCP Trip at Output On If the OCP level is s...

Page 25: ...nals but never to both pairs of terminals at the same time Switch back to LOCAL when remote sensing is not in use Interface Connections Interface connectors for USB RS 232 LAN and GPIB are mounted on the rear panel These are described in detail within the following sections 13 2 Remote Interface Configuration The MX100TP model can be remotely controlled via its RS232 USB GPIB or LAN interfaces The...

Page 26: ...change the address use the spin wheel to set the desired address and then press the OK Exit soft key The interface will operate with any commercial GPIB interface card using the device drivers and support software provided by the manufacturer of that card 13 2 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 ...

Page 27: ...computer for driver software and then locate the INF file on the CD as described above Once Windows has installed the device driver it will assign a COM port number to this particular unit This number will depend on previous COM port assignments on this PC and it may be necessary to use Device Manager to discover it Each instrument has a unique USB identifier which is remembered by the system so i...

Page 28: ...nterfaces screen Menu Remote Control Interfaces Alternatively the address can be obtained from the DHCP server or by using the LXI Discovery Tool described below mDNS and DNS SD Support The instrument supports these multicast name resolution protocols which allow a meaningful host name to be assigned to the unit without needing an entry in the database of a central nameserver The desired hostname ...

Page 29: ...uld normally have a VISA resource name of TCPIP0 192 168 0 100 inst0 INSTR but for this instrument the name must be modified to read TCPIP0 192 168 0 100 9221 SOCKET where 9221 is the TCP port used by this instrument for control and monitoring see below XML Identification Document URL As required by the LXI standard the instrument provides an XML identification document that can be queried via a G...

Page 30: ...y contain is shown in the Status Model Diagram and described in detail below but in brief the status is maintained using five primary registers the Limit Event Status Register for each output the Standard Event Status Register and the Execution Error Register A summary is reported in the Status Byte Register as selected by four masking registers the Limit Status Enable Register for each output and...

Page 31: ... in the correct sequence Bit 0 Operation Complete Set in response to the OPC command The Standard Event Status Register is read and cleared by the ESR query which returns a decimal number corresponding to the contents On power up it is set to 128 to report the power on bit The Standard Event Status Enable Register provides a mask between the Event Status Register and the Status Byte Register If an...

Page 32: ... ready to send to the controller The bit will be cleared after the Response Message Terminator has been sent Bit 2 LIM3 The Output3 Limit Status Bit This will be set if any bits in the Limit Event Status register for output3 are set and corresponding bits are set in the Limit Event Status Enable register LSE3 Bit 1 LIM2 The Output2 Limit Status Bit This will be set if any bits in the Limit Event S...

Page 33: ...rd Event Status Register a value of 1 to be placed in the Query Error Register and the response formatter to be reset discarding the waiting response message The parser will then start parsing the next PROGRAM MESSAGE UNIT from the input queue Power on Settings The following instrument status values are set at power on EER Execution Error Register 0 ESR Standard Event Status Register 128 pon bit s...

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

Page 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 ...

Page 36: ...eyword 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 the output or status register to which the co...

Page 37: ...ut 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 current limit by step size OP N NRF Set output N on off where NRF has the following meaning 0 OFF 1 ON OP N Re...

Page 38: ...e 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 14 2 2 Common Commands IDN Returns the instrument identification The response is in the form NAME model serial version RMT where NAME is the manufacturer s name model is the instrument type serial is the interface serial number and version is the revision level of the firmware install...

Page 39: ...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 is NR1 RMT QER Query and clear Query Error Register The response format is NR1 RMT STB Report the value of t...

Page 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...

Page 41: ...the AC 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...

Page 42: ... 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 also be omitted from Multi On or Multi Off control Output Terminals Universal 4mm safety binding posts on 19mm 0 75 spacing for Output screwless terminals for Sense MX100TP also has dup...

Page 43: ...on 0 01W Accuracy 0 5 of reading 3 digits SETTING MEMORY STORES Stores for Individual Outputs 50 store positions for each output Values stored are Range Voltage Current OVP and OCP Stores for All Outputs 50 store positions operating on all three outputs simultaneously Values stored are Range Voltage Current OVP OCP Output On Off Current Meter Averaging Multi On Multi Off Setup USER INTERFACE Displ...

Page 44: ...ly 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 115V 240V AC 10 50 60Hz Installation Category II Power Consumption 500VA max Operating Range 5ºC to 40ºC 20 to 80 RH Storage Range 40ºC to 70ºC Environmental Indoor use at altitudes up to 2000m Pollution Degree 2 Safety EMC Com...

Page 45: ...rrent 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 function s...

Page 46: ......

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