Agilent Technologies Series N6700 User Manual
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Agilent Technologies Series N6700 User Manual

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  • Page 1 Agilent Technologies Low-Profile Modular Power System Series N6700 User’s Guide ...
  • Page 2 Rights for more information. for a particular purpose. Agilent shall not be liable for errors or for incidental or Software and technical data rights consequential damages in connection granted to the federal government include...
  • Page 3 Return the product to an Agilent specified in the operation instructions. Sales and Service Office for service and...

  • Page 4: In This Book

    In the United States: (800) 829-4444 In Europe: 31 20 547 2111 In Japan: 0120-421-345 Or use our Web link for information on contacting Agilent in your country or specific location: www.agilent.com/find/assist Or contact your Agilent Technologies Representative.

  • Page 5: Table Of Contents

    Contents 1 – Quick Reference ..........................7 The Agilent N6700 Modular Power System – At a Glance ......8 The Front Panel – At a Glance ................ 11 The Rear Panel – At a Glance ................. 11 Front Panel Display – At a Glance ..............12 Front Panel Keys –...
  • Page 6 External Data Logging ..................91 System-Related Operations ................95 A – Specifications..........................99 Agilent N6700B, N6701A, N6702A MPS Mainframes ......100 B – Using the Digital Port .........................103 Digital Control Port ..................104 Configuring the Digital Control Port ............. 105 C –...

  • Page 7: Quick Reference

    Reference Help file included on the Agilent N6700 Product Reference CD. This CD-ROM is shipped along with your instrument. Unless otherwise noted, the Agilent N6700 Modular Power System will also be NOTE referred to as “MPS” and “power system” throughout this manual.

  • Page 8: The Agilent N6700 Modular Power System - At A Glance

    1 Quick Reference The Agilent N6700 Modular Power System – At a Glance The Agilent N6700 Modular Power System is a configurable, one rack- unit (1U) platform that lets you mix and match power modules to create a power system optimized for your test system requirements.

  • Page 9: Measurement Features

    Output measurements seamlessly autorange between ranges – however, the 10 μA current range must be selected manually. Microampere current Available on Agilent N6761A, N6762A, and N678xA SMU power modules. measurements Current measurement can be made as low as 1 μA in the 10 μA range.
  • Page 10 Option 2UA.is only available on Models N6761A and N6762A. It includes Option 761. Only available when using the remote interfaces; not from the front panel. List capability is not available on the negative current output on Model N6783A Series N6700 User’s Guide...

  • Page 11: The Front Panel - At A Glance

    SHOCK HAZARD The power cord provides a chassis ground through a third WARNING conductor. Be certain that your power outlet is of the three-conductor type with the correct pin connected to earth ground. Series N6700 User’s Guide...

  • Page 12: Front Panel Display - At A Glance

    Interface status Err = an error has occurred (press Error key to display error message) indicators Lan = the LAN is connected and has been configured IO = there is activity on one of the remote interfaces Series N6700 User’s Guide...

  • Page 13: Front Panel Keys - At A Glance

    The   arrow keys increment or decrement the voltage or current settings. They are also used to select letters in alphabetic entry fields. The Enter key enters a value. If you exit a field without pressing the Enter key, the value is ignored. Series N6700 User’s Guide...

  • Page 14: Front Panel Menu Reference

    Enables/disables oscillation protection on Models N678xA SMU. Clear Clears output protection. Displays output state. States Reset Resets the instrument to its reset (*RST) state. SaveRecall Saves or recalls an instrument state. PowerOn Selects the power-on state: *RST, RCL0. Series N6700 User’s Guide...
  • Page 15 Nvram Resets all non-volatile RAM settings to their factory defaults. Password Changes the password for the admin functions. About Frame Displays model, serial number, and firmware revisions. Module Displays model, serial number, options, voltage, current, power. Series N6700 User’s Guide...

  • Page 16: Scpi Command Summary

    Returns the total rms current (AC + DC) :HIGH? (@chanlist) Returns the high level of a current pulse :LOW? (@chanlist) Returns the low level of a current pulse :MAXimum? (@chanlist) Returns the maximum current :MINimum? (@chanlist) Returns the minimum current Series N6700 User’s Guide...
  • Page 17 (Array commands only on N676xA, N678xA SMU and Option 054) :CURRent [:DC]? (@chanlist) Takes a measurement; returns the instantaneous output current :POWer [:DC]? (@chanlist) Takes a measurement; returns the instantaneous output power :VOLTage [:DC]? (@chanlist) Takes a measurement; returns the instantaneous output voltage Series N6700 User’s Guide...
  • Page 18 Selects the measurement function (for backward compatibility) :CURRent <Bool>, (@chanlist) Enables/disables current measurements (replaces FUNCtion) :VOLTage <Bool>, (@chanlist) Enables/disables voltage measurements (replaces FUNCtion) :INPut MAIN | AUXiliary, (@chanlist) Selects the voltage measurement input (only on N6781A) Series N6700 User’s Guide...
  • Page 19 (List commands only on N676xA, N678xA SMU and Option 054) :COUNt <NRf+> | INFinity, (@chanlist) Sets the list repeat count :CURRent [:LEVel] <NRf> {,<NRf>}, (@chanlist) Sets the current list :POINts? (@chanlist) Returns the number of current list points Series N6700 User’s Guide...
  • Page 20 :OFFSet <NRf+>, (@chanlist) Sets the tracking OVP offset :RANGe <NRf+>, (@chanlist) Sets the output voltage range :SLEW [:IMMediate] <NRf+> | INFinity, (@chanlist) Sets the output voltage slew rate :MAXimum <Bool>, (@chanlist) Enables/disables the maximum slew rate override Series N6700 User’s Guide...
  • Page 21 Triggers the external data log immediately :SOURce BUS|EXTernal|IMMediate|PIN<1-7>, (@chanlist) Sets the external data log trigger source :TRANsient [:IMMediate] (@chanlist) Triggers the output immediately :SOURce BUS | EXTernal | IMMediate | PIN<1-7> Sets the output trigger source | TRANsient<1-4>, (@chanlist) Series N6700 User’s Guide...

  • Page 22: Common Commands

    TRIG:ACQ:VOLT:SLOP OUTP:COUP TRIG:ELOG:SOUR OUTP:DEL:FALL TRIG:TRAN:SOUR OUTP:DEL:RISE VOLT OUTP:PMOD VOLT VOLT:BWID OUTP:TMOD LOWZ VOLT:LIM OUTP:PROT:COUP VOLT:LIM:COUP OUTP:PROT:DEL 0.02 VOLT:LIM:NEG OUTP:PROT:OSC VOLT:MODE OUTP:PROT:WDOG VOLT:PROT:DEL OUTP:REL:POL NORM VOLT:PROT:REM POW:LIM VOLT:PROT:REM:NEG VOLT:RANG RES:STAT VOLT:SLEW 9.9E+37 SENS:CURR:CCOM VOLT:SLEW:MAX SENS:CURR:RANG [SOUR:]VOLT:TRIG SENS:CURR:RANG:AUTO Series N6700 User’s Guide...

  • Page 23: Installation

    Before installing the instrument, check the list under “Items Supplied” and verify that you have received these items with your instrument. If anything is missing, please contact your nearest Agilent Sales and Support Office. Series N6700 User’s Guide...

  • Page 24: General Information

    200 microampere measurement range with output disconnect relays. Only on Models N6761A, N6762A. Tracking overvoltage protection function. Only available on Models N6752A, N6754A, and N6762A when installed in an N6700B, N6701A, or N6702A mainframe. A small AC network is always present across the output terminals. Series N6700 User’s Guide...

  • Page 25: Inspecting The Unit

    Inspecting the Unit When you receive your power system, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and nearest Agilent Sales and Support Office immediately. Refer to www.agilent.com/find/assist.

  • Page 26: Installing The Unit

    3 and 4, it is assigned channel number 3. Grouped power modules, those that are connected in parallel and have been configured or grouped to act as a single higher-power channel, are assigned the channel number of the lowest numbered slot of the group. Series N6700 User’s Guide...

  • Page 27: Power Module Installation

    Step 1. Remove the blower cover. Remove the screws from the top and sides of the blower cover. Tilt the cover up and slide it out. Step 2. To install a power module, align the module over the pins and push it down onto the mainframe connector. Series N6700 User’s Guide...

  • Page 28: Rack Installation

    Use Rack Mount kit (Option 908) to rack mount your instrument. The Rack Mount Kit is also available by ordering part number N6709A. Agilent N6700 MPS mainframes can be mounted in a 19-inch EIA rack cabinet. They are designed to fit in one rack-unit (1U) of space.

  • Page 29: Bench Installation

    Refer to the Service Guide for installation instructions. Power Factor Refer to Appendix A for power factor statistics at 400 Hz operation. Series N6700 User’s Guide...

  • Page 30: Connecting The Line Cord

    100 VAC to 240 VAC. The frequency can be 50 Hz, 60 Hz, or 400 Hz. Agilent N6702A Mainframe Note: Standard AC mains circuits rated at nominal 100-120 VAC cannot supply enough current to power the N6702A mainframe when it is operated at its full rated power.

  • Page 31: Connecting The Outputs

    LOCKING LOCKING + +S G -S SCREW SCREW SENSE +S +LS -LS -S INSERT WIRES SENSE JUMPERS INSTALLED FOR LOCAL SENSING INSERT WIRES SENSE JUMPERS TWIST INSTALLED TWIST LEADS LEADS FOR LOCAL SENSING LOAD LOAD LOAD Series N6700 User’s Guide...
  • Page 32 (refer to the table below). To satisfy safety requirements, load wires must be heavy enough not to overheat while carrying the short- circuit output current of the unit. Agilent Model N678xA SMU wiring requirements are described on the following page.

  • Page 33: Agilent N678Xa Smu Wiring Requirements

    Because of the effect of wire inductance, the wire length information given in NOTE the previous table does not apply to Agilent Models N678xA SMU. To minimize the effect of wire inductance, the following table describes the allowable load lead and wire length for several common output wire types.
  • Page 34 1 μA and greater. As shown below, cable guards are available at the output connector of Agilent Models N678xA SMU. The guard is typically used to drive the shields of cables and test fixtures. It provides a buffered voltage that is at the same potential as the + output terminals of the module connector.

  • Page 35: Multiple Loads

    Keep each pair of wires as short as possible and twist or bundle them to reduce lead inductance and noise pickup. Note that Agilent Models N678xA SMU have additional wiring restrictions as discussed under “Agilent N678xA SMU Wiring Requirements”.

  • Page 36: Remote Sense Connections

    0.5Ω per lead (this requires 20 AWG or heavier for a 50 foot length). Note that Agilent Models N678xA SMU require remote sensing when using any of the High output bandwidth modes discussed in Chapter 4.
  • Page 37 OVP circuit could be higher than the voltage being regulated at the load. Note that for Agilent Models N678xA SMU only, the OVP circuit senses at the 4-wire sense terminals rather than at the output terminals.

  • Page 38: Parallel Connections

    Parallel Connections Only connect outputs that have identical voltage and current ratings in parallel. CAUTION Agilent Models N678xA SMU cannot be connected in parallel. Connecting outputs in parallel provides a greater current capability than can be obtained from a single output.
  • Page 39 CV load effect, CV load cross regulation, CV source effect, and CV short term drift. These are all twice the voltage programming accuracy (including the percentage portion) at all operating points. Load Transient Load transient specifications are typically twice the single output. Recovery Time Series N6700 User’s Guide...

  • Page 40: Series Connections

    Only connect outputs that have identical voltage and current ratings in series. CAUTION Agilent Models N678xA SMU and N6783A–x cannot be connected in series. To prevent currents from damaging the power system when the load is connected, always turn series-connected outputs on and off together.
  • Page 41 CC load effect, CC load cross regulation, CC source effect, and CC short term drift. These are twice the current programming accuracy (including the percentage portion) at all operating points. Load Transient Load transient specifications are typically twice the single output. Recovery Time Series N6700 User’s Guide...

  • Page 42: Additional Load Considerations

    The instrument can be operated with any output terminal ± 240 VDC including output voltage from ground. Agilent Models N678xA SMU are optimized for grounding the negative output NOTE terminal. Grounding the positive terminal may result in increased current measurement noise and a reduction in current measurement accuracy.
  • Page 43 Scope probe N6700 Modular Power System Disconnecting the load from the output before switching the power system on NOTE or off will always protect the load from common mode currents. Series N6700 User’s Guide...

  • Page 44: Connecting The Auxiliary Voltage Measurement Input

    Agilent N6781A Auxiliary Voltage Measurement Input The auxiliary voltage measurement input is located on the rear panel of the Agilent N6781A. It is primarily used for battery voltage rundown measurements, but it is also suitable for general purpose DC measurements between ± 20 VDC. As shown in the following figure, auxiliary voltage measurements cannot be made on test points that are at a greater potential than ±...

  • Page 45: Getting Started

    Detailed information on configuring the remote interfaces is included in the NOTE Agilent Technologies USB/LAN/GPIB Interfaces Connectivity Guide, which is available on the Automation-Ready CD included with this product Series N6700 User’s Guide...

  • Page 46: Turning The Unit On

    Then press Enter. If you make a mistake, either use the  backspace key to delete the number, NOTE press Back to back out of the menu, or press Meter to return to meter mode. Series N6700 User’s Guide...

  • Page 47: Entering A Current Limit Setting

    In this case, the output channel is in constant voltage mode. For a description of the status indicators, refer to Chapter 1, under “Front Panel NOTE Display – At a Glance”. Series N6700 User’s Guide...

  • Page 48: Using The Front Panel Menu

    The menu path now shows that the commands shown on the second line are located under the Protect command. The OVP command is highlighted. The third line indicates which functions are located under the OVP command. Press the Sel key to select the OVP command. Series N6700 User’s Guide...
  • Page 49 Detailed information about the SCPI programming commands are found in the Programmer’s Reference Help file on your Agilent N6700 Product Reference CD. In Case of Trouble Press the Help key to obtain additional help about any function control menu level.

  • Page 50: Connecting To The Interfaces

    General Purpose Interface Bus (GPIB). The following figure illustrates a typical GPIB interface system. If you have not already done so, install the Agilent IO Libraries Suite from the Automation-Ready CD that is shipped with your product.
  • Page 51 USB-enabled instrument to the Universal Serial Bus (USB). The following figure illustrates a typical USB interface system. If you have not already done so, install the Agilent IO Libraries Suite from the Automation-Ready CD that is shipped with your product.
  • Page 52 They are typically large, centrally-managed networks with services such as DHCP and DNS servers. If you have not already done so, install the Agilent IO Libraries Suite from the Automation-Ready CD that is shipped with your product.
  • Page 53 Getting Started 3 If you have not already done so, install the Agilent IO Libraries Suite from the Automation-Ready CD that is shipped with your product. Connect the instrument to the computer using a LAN crossover cable. Alternatively, connect the computer and the instrument to a standalone hub or switch using regular LAN cables.

  • Page 54: Modifying The Lan Settings

    This value is used to enable the instrument to determine if a client IP address is on the same local subnet. When a client IP address is on a different subnet, all packets must be sent to the Default Gateway. Series N6700 User’s Guide...
  • Page 55 Use the navigation keys to enter an alpha character. Use the up/down navigation or arrow keys to select a letter from the alphabetic choices as you scroll through the selections. Use the number keys to enter a number. Series N6700 User’s Guide...
  • Page 56 (network traffic), using more of the available network bandwidth. Allowed values: 720 - 99999 seconds. Reset Resets the LAN settings to the factory-shipped state. These settings are listed at the end of this chapter. Series N6700 User’s Guide...

  • Page 57: Communicating Over The Lan

    Getting Started 3 Communicating Over the LAN The Agilent IO Libraries Suite along with instrument drivers for specific programming environments can be used to communicate with your power system. You can also communicate with your power system using its built-in Web server, the Telnet utility, or sockets.
  • Page 58 NOTE data socket, control socket, and telnet connections to be made. Agilent instruments have standardized on using port 5025 for SCPI socket services. A data socket on this port can be used to send and receive ASCII/SCPI commands, queries, and query responses. All commands must be terminated with a newline for the message to be parsed.

  • Page 59: Securing The Interfaces

    They should also work well for other network configurations. These factory-shipped LAN settings can be restored by selecting the Reset control in the System\IO\LAN\Config\Reset menu. All non-volatile settings including LAN, can be restored by selecting the Reset control located in the System\Admin\Nvram menu. Series N6700 User’s Guide...
  • Page 60 Positive Screen saver Enabled Front panel lockout Disabled Screen saver delay 60 minutes Front panel meter view 1-channel USB interface Enabled GPIB Address Wake on I/O Enabled Key clicks Enabled Web server Enabled LAN interface Enabled Series N6700 User’s Guide...

  • Page 61: Operating The Power System

    For complete details on the SCPI (Standard Commands for Programmable Instruments) commands, refer to the Programmer’s Reference Help file included on the Agilent N6700 Product Reference CD. This CD-ROM is shipped along with your instrument. The simple examples discussed in this chapter show you how to...

  • Page 62: Programming The Output

    Select a lower range and press Select. VOLT:RANG 5,(@1) For Agilent Models N678xA SMU operating in current priority mode, you can specify a Voltage limit., which limits the output voltage at the specified value. In current priority mode, the output current remains at its programmed setting as long as the output voltage is within the positive or negative limit.
  • Page 63 Select a lower range and press Select. CURR:RANG 1,(@1) For Agilent Models N678xA SMU operating in voltage priority mode, you can specify a Current limit., which limits the output current at the specified value. In voltage priority mode, the output voltage remains at its programmed setting as long as the load current is within the positive or negative limit.
  • Page 64 For other ranges the minimum slew rate is proportional to the full scale range. The current slew rate control is only available on Agilent Models N678xA SMU. It determines the rate at which the current changes to a new programmed setting.
  • Page 65 The relays are only opened or closed when the output is at a safe state (zero voltage; zero current). Note however, that you can program the output state on or off while leaving the relay state unchanged. Series N6700 User’s Guide...
  • Page 66 Enter a value and press Select. Set the Output Bandwidth NOTE This information applies to Agilent Models N678xA SMU only. Agilent Models N678xA SMU have several voltage bandwidth modes to allow you to optimize output response time with capacitive loads.
  • Page 67 Remote only 6 inches (155 mm) 50 to 200 mΩ See Chapter 2 under “Agilent N678xA SMU Wiring Requirements” for additional information on allowable load lead lengths. Connecting capacitive loads that fall outside the indicated ranges may result in NOTE output instability or oscillation, and may cause the output to turn off, setting the OSC status bit.

  • Page 68: Synchronizing Output Steps

    To set a voltage and current trigger level for output 1 use: Select the Trig Voltage box to set the voltage. Select the Trig Current VOLT:TRIG 15,(@1) box to set the current. Enter a value CURR:TRIG 1,(@1) and press Select. Series N6700 User’s Guide...
  • Page 69 To initiate the trigger system, use: Front Panel: SCPI Command: Select the Transient\Control. To initiate the transient trigger system: Scroll to Initiate and press Select. INIT:TRAN (@1) Series N6700 User’s Guide...
  • Page 70 ABOR:TRAN (@1) Scroll to and select Abort. When a trigger is received, the triggered functions are set to their programmed trigger levels. When the triggered actions are completed, the trigger system returns to the idle state. Series N6700 User’s Guide...
  • Page 71 Use the Channel key to select the To program channel 3’s step function channel that is the trigger source. to generate a trigger signal, use Select Transient\Step. STEP:TOUT ON,(@3) Check Enable Trigger Output. Then press Select. Series N6700 User’s Guide...

  • Page 72: Programming Output Lists

    The List Function Either output voltage or output current or both, may be list- controlled. For Agilent Models N678xA SMU, only the parameters associated with one of the priority modes (either voltage priority or current priority) may be list controlled. List mode lets you generate complex sequences of output changes with rapid, precise timing, which may be synchronized with internal or external signals.
  • Page 73 To program output 1, use Select List Step 1 and enter a LIST:VOLT 15,0, (@1) voltage value of 0. Press Select. LIST:DWEL 1,2, (@1) Enter a dwell value of 2 for List Step 1 and Press Select. Series N6700 User’s Guide...
  • Page 74 Select the Transient\Control. To program output 1, use Select Initiate and Press Select. INIT:TRAN (@1) Step 10. Trigger the output pulse or pulse train. Front Panel: SCPI Command: Select Transient\Control. *TRG Select Trigger and Press Select. Series N6700 User’s Guide...
  • Page 75 Step 4. Determine how the list is paced. To pace the list by dwell time, set the list pacing to Dwell-paced on the front panel menu. (Set the LIST:STEP command to AUTO.) As each dwell time elapses, the next step is immediately output. Series N6700 User’s Guide...
  • Page 76 2 times, use Enter the number of list repetitions (2) and Press Select. LIST:COUN 2, (@1) Step 8. Select a trigger source, initiate, and trigger the list. This is described in detail under "Synchronizing Output Steps". Series N6700 User’s Guide...

  • Page 77: Making Measurements

    Seamless Measurements Seamless voltage and current measurement autoranging is available on Agilent Models N6781A and N6782A. This enables a wide dynamic measurement range with no data lost across ranges. Autoranging does not include the 10 μA range, which must be selected manually.

  • Page 78: Agilent N6781A Auxiliary Voltage Measurements

    When the auxiliary voltage measurement input is selected, the voltage measurement input will be switched to the Aux Voltage inputs on the Agilent N6781A instead of the normal + and − sense terminals. To enable auxiliary voltage measurements:...

  • Page 79: Using The Digitizer

    Select Measure\Range. To set the 5 V measurement range: Select the lower measurement SENS:VOLT:RANG 5, (@1) To set the 1 A measurement range: range from the voltage or current dropdown menu. Then press Select. SENS:CURR:RANG 1, (@1) Series N6700 User’s Guide...
  • Page 80 Seamless Measurements Seamless voltage and current measurement autoranging is available on Agilent Models N6781A and N6782A. This enables a wide dynamic measurement range with no data lost across ranges. Autoranging does not include the 10 μA range, which must be selected manually.
  • Page 81 The following commands trigger and return measurement data.: Front Panel: SCPI Command: Select the Meter key. Front panel To measure average voltage & current: meters can only measure average MEAS:VOLT?(@1) voltage and current. MEAS:CURR?(@1) To measure RMS voltage & current: MEAS:VOLT:ACDC?(@1) MEAS:CURR:ACDC?(@1) Series N6700 User’s Guide...
  • Page 82 This may tie up the computer if the measurement trigger does not occur immediately. You can test the MEAS_active bit in the operation status register to know when the measurement has completed as explained in the following section. Series N6700 User’s Guide...
  • Page 83 This allows pre- or post-trigger data sampling. 524,288 DATA POINTS OFFSET = -524,287 524,288 DATA POINTS OFFSET = -262,144 524,288 DATA POINTS OFFSET = 0 OFFSET = 0 to 2E9 524,288 DATA POINTS TIME TRIGGER Series N6700 User’s Guide...
  • Page 84 To select Bus triggers for output 1: TRIG:ACQ:SOUR BUS,(@1) To select a Digital pin as the trigger: TRIG:ACQ:SOUR PIN<n>,(@1) To select a Transient output as trigger: TRIG:ACQ:SOUR TRAN<n>,(@1) where n is the output channel that will generate the trigger signal. Series N6700 User’s Guide...
  • Page 85 It takes a few milliseconds for the instrument to be ready to receive a trigger signal after receiving the INITiate:ACQuire command, and it can take longer for Agilent Models N678xA SMU. If a trigger occurs before the trigger system is ready for it, the trigger will be ignored.
  • Page 86 If a bit value of 32 is returned in the query, the MEAS_active bit is true, and the measurement is NOT complete. When the MEAS_active bit is false, you can retrieve the measurement. Refer to the N6700 Programmer’s Reference Help file for more information. Series N6700 User’s Guide...

  • Page 87: Using The Protection Functions

    Over-voltage protection is a hardware OVP whose trip level is a programmable value. The OVP is always enabled. OV− Negative voltage protection is a hardware OVP. Only applies to Agilent N678xA SMU and N6783A. Over-current protection is a programmable function that can be enabled or disabled.
  • Page 88 To set the tracking offset for output 1: VOLT:PROT:TRAC:OFFS 2,(@1) Agilent Models N678xA SMU also have a back-up local OVP function. Refer to “Over-voltage Protection” in chapter 2 for a description of the feature. Additionally, for Agilent Model N6784A, you can program a negative over-voltage value.
  • Page 89 60 seconds after all IO activity has ceased. The watchdog state and delay settings are volatile, but can be saved and recalled as part of the instrument state. A watchdog protect can be cleared as described under “Clear Output Protection Functions”. Series N6700 User’s Guide...
  • Page 90 OUTP:PROT:WDOG:DEL 600 Set the Oscillation Protection NOTE This information applies to Agilent Models N678xA SMU only. If open sense leads or capacitive loads outside the allowable range cause the output to oscillate, the oscillation protection function detects the oscillation and latches the output off. The condition is annunciated on the front panel by the OSC status annunciator.

  • Page 91: External Data Logging

    Select the Measurement Functions and Ranges The following commands select a measurement function: Front Panel: SCPI Command: Not Available To enable voltage or current measurements: SENS:ELOG:FUNC:VOLT ON,(@1) SENS:ELOG:FUNC:CURR ON,(@1) To enable min/max measurements: SENS:ELOG:FUNC:VOLT:MINM ON,(@1) SENS:ELOG:FUNC:CURR:MINM ON,(@1) Series N6700 User’s Guide...
  • Page 92 Seamless Measurements Seamless voltage and current measurement autoranging is available on Agilent Models N6781A and N6782A. This enables a wide dynamic measurement range with no data lost across ranges. Autoranging does not include the 10 μA range, which must be selected manually.
  • Page 93 Trigger Input to be used as a trigger source (see Appendix C). Use the following commands to select one of the available trigger sources: Front Panel: SCPI Command: Not Available TRIG:ELOG:SOUR BUS,(@1) TRIG:ELOG:SOUR IMM,(@1) TRIG:ELOG:SOUR EXT,(@1) TRIG:ELOG:SOUR PIN<n>,(@1) Series N6700 User’s Guide...
  • Page 94 The data for each channel is a definite length binary block, with the byte order specified by the FORMat:BORDer command. Terminate the Measurement Front Panel: SCPI Command: Not Available To abort the external data logger: ABOR :ELOG (@1) Series N6700 User’s Guide...

  • Page 95: System-Related Operations

    Cycle AC power. *TST? Instrument Identification For Agilent N6700 mainframes, you can return the model number, serial number, firmware revision, backup and active firmware. For power modules, you can return the model number, serial number, installed options, voltage, current and power rating.
  • Page 96 4 Operating the Power System Output Groups Output grouping does not apply to Agilent Models N678xA SMU. NOTE Output channels can be configured or “grouped” to create a single output with higher current and power capability. Almost all instrument functionality is supported by grouped channels, including voltage and current programming, measurements, status, step and list transients.
  • Page 97 NOTE reset the front panel lockout password. Refer to the Programmer’s Reference Help file on your Agilent N6700 Product Reference CD for more information. The SYSTem:COMMunicate:RLSTate RWLock command can also lock and unlock the front panel. This command is completely independent of the front panel lockout function.

  • Page 98: Front Panel Display

    You can specify how the output channels are displayed at turn on. Front Panel: SCPI Command: Select System\Preferences\Display\View To display all channels: DISP:VIEW METER4 Check 1-channel to display channel one. Check 4-channel to display all channels. Series N6700 User’s Guide...

  • Page 99: A - Specifications

    Complete specifications and supplemental characteristics information for all NOTE power modules are included in the Agilent N6700 Modular Power System Family Specifications Guide. This document is available on the Agilent N6700 Product Reference CD that is shipped along with your instrument as well as on the web at www.agilent.com/find/N6700.

  • Page 100: Agilent N6700B, N6701A, N6702A Mps Mainframes

    LXI Compliance Class C (only applies to units with LXI label on front panel) USB 2.0 Requires Agilent IO Library version M.01.01 or 14.0 and up 10/100 LAN Requires Agilent IO Library version L.01.01 or 14.0 and up Built-in Web server...
  • Page 101 Refer to the outline diagrams on the following page. Under full load at 400 Hz, power factor drops from 0.99 @ 120 VAC to as low as 0.76 @ 265 VAC. Power factor degrades further under no load conditions. Series N6700 User’s Guide...

  • Page 102: Outline Diagram

    Outline Diagram 549.7 mm 560.2 mm 21.64" 22.06" N6700B/ N6700B/ N6701A N6701A 598.0 mm 608.5 mm 23.54" 23.96" N6702A N6702A 25.4 mm 1.00" 432.5 mm 17.03" 482.6 mm 44.45 mm 19.00" 1.75" = AIRFLOW 425.45 mm 16.75" Series N6700 User’s Guide...

  • Page 103: B - Using The Digital Port

     Output State (see Appendix D)  Earlier Agilent N6700A mainframes use a 4-pin connector instead of the 8-pin NOTE connector available on the N6700B, N6701A, and N6702A mainframes. Refer to the Service Guide for information on pin functionality of the 4-pin connector.

  • Page 104: Digital Control Port

    When Negative polarity is selected, a logical true signal is a voltage low at the pin. For a complete description of the electrical characteristics of the digital port, see Appendix A. Series N6700 User’s Guide...

  • Page 105: Configuring The Digital Control Port

    Digital Output Pins 1 - 7 TTL, AS, CMOS, HC Relay driver Pins 1 - 7 (contain internal clamp diodes for inductive flyback) Digital Input Pins 1 - 7 A) Relay Circuits B) Digital Interface Circuits Series N6700 User’s Guide...

  • Page 106: Digital Input

    In the Function field, select either DIG:PIN1:FUNC TOUT To select the trigger input function Trig In or Trig Out. for pin 2: In the Polarity field, select either DIG:PIN2:FUNC TINP Positive or Negative. To select the trigger polarity: DIG:PIN<1-7>:POL <pol> Series N6700 User’s Guide...

  • Page 107: Fault Output

    Positive or Negative. To latch the Inhibit signal: Select Protect\Inhibit. OUTP:INH:MODE LATC Select either Latching or Live. To set the Inhibit signal live: To disable the Inhibit signal, select OUTP:INH:MODE LIVE To disable the Inhibit signal: OUTP:INH:MODE OFF Series N6700 User’s Guide...
  • Page 108 Output State Only pins 4 through 7 can be configured to control the output state. This function lets you connect multiple Agilent N6700 mainframes together and synchronize the output on/off sequence across mainframes. Refer to Appendix D for detailed information.

  • Page 109: C - Power Allocation

     Agilent N6701A = 600 W  Agilent N6702A @ nominal 100 - 120 VAC = 600 W  @ nominal 200 - 240 VAC = 1,200 W Note that the power system will continue to operate normally as long as the combined module output power is within the power rating of the mainframe.

  • Page 110: Power Limit Operation

    - either constant voltage or constant current mode. Power limiting should not be used when Agilent N673xB, N674xB, and N677xA NOTE power modules are grouped. When these power modules are grouped, you must reset the power limit to its maximum rated value.

  • Page 111: Module Power Allocation

    Power Allocation Appendix C For Agilent Models N678xA SMU, the power limit function does not apply. Module Power Allocation The following commands program the module power limit function: Front Panel: SCPI Command: Select To set a power limit on output 1: Output\Advanced\Power.

  • Page 113: D - Output On/Off Synchronization

    For complete details on the SCPI commands discussed in this appendix, refer to the N6700 Programmer’s Reference Help file included on the Agilent N6700 Product Reference CD. This CD-ROM is shipped along with your instrument. Series N6700 User’s Guide...

  • Page 114: Synchronizing Output Turn-On Delays

    Appendix D Output On/Off Synchronization Synchronizing Output Turn-on Delays All N6700 Power Modules that are installed in an Agilent N6700 mainframe exhibit a minimum delay offset that applies from the time that a command to turn on the output is received until the output actually turns on.
  • Page 115 Output turn-on synchronization must be enabled on the mainframe. Front Panel: SCPI Command: In the front panel menu, select To enable, send: Output\Sequence\Couple. OUTP:COUP ON Check the box labeled “Enable”. To disable, send: To disable, uncheck the box. OUTP:COUP OFF Series N6700 User’s Guide...
  • Page 116 There is no need to specify a delay offset when outputs turn off. Outputs start NOTE executing their turn-off delays as soon as an output Off command is received. Series N6700 User’s Guide...

  • Page 117: Synchronizing Multiple Mainframes

    In this example, pin 6 will be configured as the output On control. Pin 7 will be configured as the output Off control. The ground or Common pins also need to be connected together. Series N6700 User’s Guide...

  • Page 118: Operation

    If a mainframe has its ON/OFF key coupled (located in the System\Preferences\Keys menu), turning the output on or off on any coupled channel will cause all coupled channels as well as non- coupled channels on that mainframe to turn on or off. Series N6700 User’s Guide...

  • Page 119: E - Source Operating Modes

    Source Operating Modes Single Quadrant Operation ................120 Agilent N678xA Multi-Quadrant Operation ..........122 This appendix discusses the difference between constant voltage and constant current operating modes, multiple output quadrant operation, and other advanced source functions. Series N6700 User’s Guide...

  • Page 120: Single Quadrant Operation

    Appendix E Source Operating Modes Single Quadrant Operation The Agilent N6700 Modular Power System can operate in either constant voltage (CV) or constant current (CC) over the rated output voltage and current. Constant voltage mode is defined as an operating mode in which the dc source maintains its output voltage at the programmed voltage setting in spite of changes in load, line, or temperature.
  • Page 121 NOTE The following figure illustrates the autoranging output characteristic of the Agilent N675xA and N676xA power modules. Point 3 shows a situation in which the voltage and current settings are such that the operating locus is limited by the maximum output power boundary of the output.

  • Page 122: Agilent N678Xa Multi-Quadrant Operation

    Appendix E Source Operating Modes Agilent N678xA Multi-Quadrant Operation Agilent Models N678xA SMU can be operated in either voltage or current priority mode. They can source as well as sink output power. Note that Agilent Models N6781A and N6782A operate only in the + Voltage quadrants.
  • Page 123 +6 V +V limit I setting -1 A / -3 A + Current +1 A / +3 A − Voltage -V limit operation applies to N6784A only -20 V / -6 V Sourcing power Sinking power Programmable Series N6700 User’s Guide...
  • Page 124 Once the current is exceeds 12% of the rated current of the range (1.12 A on the 1 A range; 3.36 A on the 3 A range), the output will shut down, the output relays will open, and the OC and PROT status bits will be set. Series N6700 User’s Guide...
  • Page 125 Index damage ................25 Admin menu, password ........... 59 airflow ..............26, 29, 102 data socket................58 All ..................64 DCL ..................58 allocation, power ............. 110 Declaration of conformity ........... 2 autoranging............... 121 default gateway..............55 auxiliary voltage measurement ........44 digital I/O auxiliary voltage measurements ........
  • Page 126 Telnet ................58 groups................39, 95 list noise ................37 arbitrary................75 polarity reversal ............. 65 programming ..............72 pulse ................73 load connections ............... 31 quadrant ................ 122 lockout, front panel ............96 resistance ............... 66 Series N6700 User’s Guide...
  • Page 127 ..............28 USB interface ..............51 Rectangular ................ 81 relay, output ............... 65 remote interface voltage factory settings ............. 59 measurement range ............77 securing ................59 priority mode ..............63 remote sensing ..............36 Series N6700 User’s Guide...
  • Page 128 ..........82 setting ............... 46, 62 Warning ................. 3 slew rate ................. 64 watchdog timer ..............88 voltage priority ..............122 Web server ................57 Web URL’s ................4 wire sizes ................32 Series N6700 User’s Guide...

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