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ADCMT 6540 Operation Manual

4-channel dc voltage current source/monitor
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6540/6541
4-Channel DC Voltage Current Source/Monitor
Operation Manual
FOE-00000147B01
MANUAL NUMBER
First printing Jul 31, 2017
ADC CORPORATION
C
2017
All rights reserved.
Printed in Japan

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  • Page 1 Cover 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual FOE-00000147B01 MANUAL NUMBER First printing Jul 31, 2017 ADC CORPORATION 2017 All rights reserved. Printed in Japan...
  • Page 3 Safety Summary Safety Summary To ensure thorough understanding of all functions and to ensure efficient use of this instrument, please read the manual carefully before using. Note that ADC Corporation (hereafter referred to as ADC) bears absolutely no re- sponsibility for the result of operations caused due to incorrect or inappropriate use of this instrument. If the equipment is used in a manner not specified by ADC, the protection provided by the equipment may be im- paired.
  • Page 4 Safety Summary • Do not place anything on the product and do not apply excessive pressure to the product. Al- so, do not place flower pots or other containers containing liquid such as chemicals near this product. • When the product has ventilation outlets, do not stick or drop metal or easily flammable ob- jects into the ventilation outlets.
  • Page 5 Safety Summary Main Parts with Limited Life Part name Life Unit power supply 5 years Fan motor 5 years Electrolytic capacitor 5 years LCD display 6 years LCD backlight 2.5 years Memory backup battery 5 years • Hard Disk Mounted Products The operational warnings are listed below.
  • Page 6 Environmental Conditions This instrument should be only be used in an indoor area which satisfies the following conditions: • An area free from corrosive gas • An area away from direct sunlight • A dust-free area • An area free from vibrations •...
  • Page 7 Types of Power Cable Replace any references to the power cable type, according to the following table, with the appropriate power cable type for your country. Rating, color Model number Plug configuration Standards and length (Option number) PSE: Japan 125 V at 7 A Straight: A01402 Black...
  • Page 9 Certificate of Conformity This is to certify, that 4-Channel DC Voltage Current Source/Monitor 6540, 6541 complies with the provisions of the EMC Directive, 2014/30/EC in accordance with EN61326-1, Low Voltage Directive, 2014/35/EC in accordance with EN61010-1/A1, and RoHS Directive, 2011/65/EC in accordance with EN IEC 63000.

  • Page 11: Table Of Contents

    TABLE OF CONTENTS 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual TABLE OF CONTENTS PREFACE ...................... Product Overview ....................Supplied Accessories ..................Optional Accessories ..................Operating Environment ..................1.4.1 Environmental Conditions ................1.4.2 Power Specification ..................1.4.3 Changing Power Voltage, and Checking or Replacing Power Fuse ..
  • Page 12 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Table of Contents 2.9.2 Synchronization of Multiple Channels (AutoSet ExtSig) ......2-43 REFERENCE ....................Menu Index ....................... Function Description ..................3.2.1 MENU Key (Parameter Setting) ..............3.2.2 CH Key and 1CH/4CH Key ...............
  • Page 13 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Table of Contents 4.2.6.2 Setting Limit Values ................... 4-37 4.2.6.3 Displaying and Outputting of Limit Detection ........... 4-38 4.2.7 Alarm Detection ..................4-39 4.2.8 Source and Measurement Timing ............... 4-40 4.2.8.1 Basic Source and Measurement Timing .............
  • Page 14 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Table of Contents 5.7.1 Command Syntax ..................5-29 5.7.2 Data Format ....................5-30 5.7.3 Remote Command List ................5-31 5.7.4 TER? Command ..................5-51 Sample Programs ....................5-52 5.8.1 Program Example for GPIB ...............
  • Page 15 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual LIST OF ILLUSTRATIONS Title Page Operating Environment ..................... Setting Power Voltage Indicator ..................Power Cable ........................Connecting Power Cable ....................Self-Test in Progress ......................1-10 Self Test Completion ......................1-10 Start-Up Screen .........................
  • Page 16 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual List of Illustrations Title Page Connections for Calibration ....................Calibration Procedure (1) ....................Calibration Procedure (2) ....................Calibration Procedure (3) ....................Calibration Procedure (4) ....................Calibration Procedure (5) ....................7-10...
  • Page 17 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual LIST OF TABLES Title Page Standard Accessory List ....................Optional Accessory List ....................Power Supply Specification ....................Operations in DC Source Mode ..................Operations in Pulse Source Mode ..................Operations in Sweep Source Mode ...................

  • Page 19: Preface

    This chapter describes the accessories, operating environment, precautions, and operating check for person- nel who operate the 6540/6541. Read this manual before using the 6540/6541. Product Overview The 6540/6541 is a 4-Channel DC Voltage Current Source/Monitor that offers high sensitivity with 4 -digit source resolution and 5 -digit measurement resolution, as well as various sweep functions and a pulse mea- surement function with a minimum pulse width of 50 s.

  • Page 20: Supplied Accessories

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 1.2 Supplied Accessories Supplied Accessories The 6540/6541 standard accessories are listed below. If any accessory is missing or damaged, contact an ADC CORPORATION sales representative. Specify the part number when ordering. Table 1-1 Standard Accessory List...

  • Page 21: Optional Accessories

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 1.3 Optional Accessories Optional Accessories The 6540/6541 optional accessories are listed below. Specify the part number when ordering. Table 1-2 Optional Accessory List Name Part number Remarks Test fixture 12701A Connecting cable A01036-1500 BNC-BNC cable (1.5 m)

  • Page 22: Operating Environment

    Obstructing the vents will cause the internal temperature to rise, possibly causing faulty operation. • Mounting in a rack Ensure that exhaust air from other devices is not directed at the vents on the side of the 6540/6541. To prevent the temperature in the rack from rising, install a heat sink fan.

  • Page 23: Operating Environment

    Figure 1-1 Operating Environment NOTE: Warm-up Time Allow the 6540/6541 to warm up for at least 60 minutes after turning on the power at room temperature to ensure the specified accuracy of the 6540/6541.

  • Page 24: 1.4.2 Power Specification

    1.4.2 Power Specification 1.4.2 Power Specification Table 1-3 below shows the 6540/6541 power supply specifications. CAUTION: To prevent damage to the 6540/6541, do not apply a voltage or frequency that exceeds the specified range. Table 1-3 Power Supply Specification Optional Standard...

  • Page 25: Changing Power Voltage, And Checking Or Replacing Power Fuse

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 1.4.3 Changing Power Voltage, and Checking or Replacing Power Fuse 1.4.3 Changing Power Voltage, and Checking or Replacing Power Fuse The 6540/6541 power voltage can be changed manually. This section describes the procedure for changing the power voltage, and checking and replacing the power fuse.

  • Page 26: Power Cable

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 1.4.4 Power Cable 1.4.4 Power Cable CAUTION: Use a power cable that conforms to the power outlet voltage and type. However, for use outside of Japan, use only a power cable approved for the respective country.

  • Page 27: Operating Check

    1.5 Operating Check Operating Check This section describes the simple self-test which must be performed when operating the 6540/6541 for the first time. Follow the procedure below to ensure the instrument operates correctly. Ensure that the POWER switch on the front panel is set to OFF.

  • Page 28: Self-Test In Progress

    1.5 Operating Check Set the POWER switch on the front panel to ON. 6540: After all the LEDs (OPR, SUS, LMT and ERR) turn ON, a self-test is per- formed. When the test finishes normally, the LEDs (OPR, SUS, LMT and ERR) go OFF.

  • Page 29: Start-Up Screen

    500 mA. Figure 1-8 VSIM Measurement in (Output ON) Press the OPR keys of CH1 to CH4. The OPR keys go OFF and the 6540/6541 enters the Standby (output OFF) sta- tus. The operation check is complete.

  • Page 30: Cleaning, Storage, And Transport Methods

    (90 days or longer), place the 6540/6541 in a moisture-proof bag together with a desiccant. Avoid storing the 6540/6541 in a location where there is a lot of dust or where it will be sub- jected to direct sunlight.

  • Page 31: Warm-Up

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 1.7 Warm-Up Warm-Up Allow the 6540/6541 to warm up for at least 60 minutes after turning on the power to ensure the specified accuracy of the 6540/6541. Calibration Calibrate the 6540/6541 in accordance with the procedure described in Chapter 7 "CALIBRATION."...

  • Page 32: 1.10 Product Disposal And Recycling

    1.10 Product Disposal and Recycling 1.10 Product Disposal and Recycling Correctly dispose of the 6540/6541 in accordance with local and national regulations. Before disposal, remove the following parts from the product to prevent dispersal of substances that may adversely affect the environment, human health, or the ecosystem.
  • Page 33 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 1.10 Product Disposal and Recycling Name of substance or removed part Used? Location Unit Part Electrolytic capacitors containing substance of concern (With height> 25 mm, dia.> 25 mm, or equivalent volume) Arsenic or its compounds...

  • Page 35: Panel And Operation

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2. PANEL AND OPERATION PANEL AND OPERATION This chapter describes the part names on the panels and basic operations. Front and Rear Panels This section describes the part names and functions on the front and rear panels.

  • Page 36: 2.1.1 6540 Front Panel

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.1.1 6540 Front Panel LED indicators Turns ON in the Operate status (output relay ON), or Turns OFF in the Standby status (output relay OFF). Turns ON in the Suspend status. LMT Turns ON when a limit value is detected.

  • Page 37: 6540 Rear Panel

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.1.2 6540 Rear Panel 2.1.2 6540 Rear Panel The following describes the 6540 rear panel. Figure 2-2 6540 Rear Panel USB connectors Connect to external controllers via USB cables. Corresponding to displayed channels.

  • Page 38: 2.1.3 6541 Front Panel

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.1.3 6541 Front Panel 2.1.3 6541 Front Panel The following describes the 6541 front panel. Figure 2-3 6541 Front Panel POWER switch Turns ON or OFF the power. Output terminals The output terminals are always 4-wire connection.

  • Page 39: 2.1.3 6541 Front Panel

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.1.3 6541 Front Panel Rotary knob and other keys • Rotary knob Increases or decreases the digit at the cursor position, and selects units or parameters. In the direct input mode, it selects units. On the MENU screen, it selects parameters vertically.

  • Page 40: 2.1.4 6541 Rear Panel

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.1.4 6541 Rear Panel 2.1.4 6541 Rear Panel The following describes the 6541 rear panel. Figure 2-4 6541 Rear Panel USB connector Connects to an external controller via a USB cable. GPIB interface connector (factory option) Connects to an external controller via a GPIB cable.

  • Page 41: 6541 Basic Operation

    2.2 6541 Basic Operation 6541 Basic Operation This section describes the basic operations of the 6541. To operate the 6540, set the USB IDs and control it from a personal computer in reference to Section , 5.7, "Remote Commands." 2.2.1...

  • Page 42: Numerical Input

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.2.2 Numerical Input 2.2.2 Numerical Input You can input numbers in two ways. One is by using the left and right keys and the rotary knob, and the other is by using "direct input mode."...

  • Page 43: Numerical Input In Direct Input Mode

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.2.2 Numerical Input 2.2.2.2 Numerical Input in Direct Input Mode Pressing the 123... key switches to the direct input mode. (The 123... key turns ON.) Green colored characters at the lower left sides of the panel keys are enabled in the direct input mode.

  • Page 44: 6541 Example Operations

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3 6541 Example Operations 6541 Example Operations Parameter settings are available by using the soft keys, the MENU or the VIEW key. This section describes how to set parameters with the soft keys.
  • Page 45 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.1 DC Source and Measurement Setting the source value. Set the source value. For more information how to set it, refer to Section 2.2.2, "Numerical Input." When the source range is set to LOCK (fixed), out-of-range values cannot be set.
  • Page 46 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.1 DC Source and Measurement Pressing the soft key: Limit will develop the limit layer and the move the cursor to HL. When LMT In is set to Balance, setting HL will set LL to the same value of the reverse polarity.

  • Page 47: Pulse Source And Measurement

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.2 Pulse Source and Measurement 2.3.2 Pulse Source and Measurement An example operation of the pulse source mode at channel 2 is described below. Example 2: Channel: 2, IS: +1 mA, VL: 10 V, Load: 5 k...
  • Page 48 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.2 Pulse Source and Measurement Selecting the source function. Choose "IS" with the soft key: Source. Selecting the measurement function. Choose "VM" with the soft key: Measure. 2-14...
  • Page 49 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.2 Pulse Source and Measurement Time settings. Display the time setting screen with the soft key: Time Select level Input/Run level Set the relevant parameters such as IT and TP on the time setting screen.
  • Page 50 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.2 Pulse Source and Measurement Setting the source value, the limit values, and output ON As in the case of DC source, set the source current value (pulse value) and limit voltage values.

  • Page 51: 2.3.3 Sweep Measurement

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.3 Sweep Measurement 2.3.3 Sweep Measurement This section describes how to read out measurement data from the memory by using the sweep source mode at channel 3. Example 3: Channel: 3, VSIM: 0.5 V to 5 V (0.5 V step) , linear sweep, Load: 1 k...
  • Page 52 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.3 Sweep Measurement Selecting the channel Choose "3" with the CH key. Selecting the source mode Choose "DC sweep" with the soft key: Mode. Press the soft key: RETURN to return to the top layer of the soft keys. The soft key: SWPType is dis- played.
  • Page 53 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.3 Sweep Measurement Input values at the Sweep Value layer. Select level Input/Run level Select the parameters at the Sweep Value layer (Select level on the left) with the rotary knob. Press the ENTER key to move to the Input/Run level on the right to edit the values.
  • Page 54 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.3 Sweep Measurement Time settings. Display the time setting screen with the soft key: Time Set the relevant parameters as in the case of pulse source. Setting the measurement memory and output ON Press the soft key: Measure and then StoreSW.
  • Page 55 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.3.3 Sweep Measurement Checking the measurement data After completion of sweep measurement, press the soft key: Memory View in Measure to display the data stored in the measurement data memory. When the limit values are detected, they are displayed in red.

  • Page 56: 6541 Display

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.4 6541 Display 6541 Display The 6541 has two types of home screens: 1 channel-display and 4-channel display. To switch the home screens, press the SHIFT key first and the CH key second.

  • Page 57: Home Screen (1-Channel) Display

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.4 6541 Display Other annotations • DC/PLC (pulse)/DSWP (DC sweep)/PSWP (pulse sweep) : Source mode. • AZ: Turns On when the Auto Zero function is ON. • SLOW/FAST: Output response • HOLD: Turns ON when the trigger mode is set to HOLD.
  • Page 58 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.4 6541 Display Integration time Indicates IT (integration time). Measurement range Indicates the measurement range (MeasRng). Shows whether it is AUTO or FIX. Source rnage Indicates the source range (SrcRng). Shows whether it is AUTO or FIX in the sweep mode.

  • Page 59: Soft Keys

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.5 Soft Keys Soft Keys To set parameters, choose an arbitrary channel by using the CH key, and utilize the MENU hierarchy, the VIEW key or soft keys at the lower side of the display.
  • Page 60 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.5 Soft Keys • Rng Auto Source range DC or pulse source: FIT or LOCK Sweep source: AUTO or FIX • Sus Z Impedance in the Suspend status: HiZ or LoZ •...
  • Page 61 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.5 Soft Keys Limit Setting the limit values (The cursor moves to HL.) • High limit value • Low limit value Limit setting: Balance or INDIV • LMT In • Balance: Setting HL (or LL) will set LL (or HL) to the same value of the reverse polarity.
  • Page 62 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.5 Soft Keys SWPType Selecting the sweep type • Linear Linear sweep • Fixed Fixed sweep • Random Random sweep • Linear2 2-slope linear sweep 2-28...

  • Page 63: Menu Hierarchy

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6 MENU Hierarchy MENU Hierarchy This section describes the MENU hierarchy details. 2.6.1 MENU Operation Press the MENU key will display the MENU hierarchy (top layer). The MENU is a 2-layer hierarchical structure.

  • Page 64: Menu Structure And Parameter List

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 1) Source 1) Mode Source mode DC / Pulse / DC Sweep / Pulse Sweep...
  • Page 65 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 3)Sweep Value 1) Start Value Linear sweep start value At linear sweep +0.0000 A to 500.00 mA -10.000 V to +10.000 V...
  • Page 66 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 4) Sweep Memory Top Adr Random memory setting top address Select and change with the soft key: SetAdr. SetAdr Random memory setting top address Switch to Top Adr setting.
  • Page 67 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 6) Measure 6) Measure 1) Auto Zero Measurement Auto Zero ON / OFF 2) Integ Time Integration time 100 s / 500 s / 1 ms / 5 ms / 10 ms / 1 PLC / 2 PLC / 100 ms /...
  • Page 68 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 6) Measure 8) Compute 1) Compare SW Comparator calculation ON/OFF OFF / ON 2) Scaling SW Scaling calculation ON/OFF...
  • Page 69 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 10) EXT SIGNAL 1) OPR Signal INTERLOCK/OPERATE IN/OUT control signal function setting Disable / Interlock / STBY IN / OPR/SBY IN / OPR/SUS IN /...
  • Page 70 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 6) Measure 12) Sync Master Synchronized master channel CH1 / CH2 / CH3 / CH4 CH1 synchronization OFF / ON ;...
  • Page 71 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.6.2 Menu Structure and Parameter List Category level Select level Input/Run level MENU 6) Measure 13) Interface 1) I/F BUS Interface selection USB / GPIB / LAN 2) Header Header ON / OFF...

  • Page 72: View Key

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.7 VIEW Key VIEW Key Pressing the VIEW key will display the Table Edit list of one of the parameters. Pressing the VIEW key in this state will display the following parameters by turns.
  • Page 73 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.7.2 Table Edit Parameter List 2.7.2 Table Edit Parameter List 1: SOURCE • Mode Source mode • PLS Base Base value at pulse source • Suspend V Output voltage in the Suspend status •...
  • Page 74 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.7.2 Table Edit Parameter List 8: COMPUTE • Compare Comparator calculation ON/OFF • Scaling Scaling calculation ON/OFF • Max/Min MAX/MIN calculation ON/OFF • NULL NULL calculation ON/OFF 9: CONST (Viewing only) •...

  • Page 75: Sweep Memory Settings (Random Memory)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.8 Sweep Memory Settings (Random Memory) Sweep Memory Settings (Random Memory) This section describes how to set the source data (sweep memory) that is used for random sweep. The settings are done at 4) Sweep Memory on the MENU layer.

  • Page 76: Parameter Copy And Synchronization Setting

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.9 Parameter Copy and Synchronization Setting Parameter Copy and Synchronization Setting This section describes 12) SYNC on the MENU layer. This parameter is convenient for copying parameters and setting synchronous channels. 2.9.1 Parameter Copy (ParamSync) Parameters set on the master channels can be copied to the slave channels.

  • Page 77: Synchronization Of Multiple Channels (Autoset Extsig)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.9.2 Synchronization of Multiple Channels (AutoSet ExtSig) 2.9.2 Synchronization of Multiple Channels (AutoSet ExtSig) This section describes how to perform source and measurement on the master channel and the slave chan- nels in synchronization.
  • Page 78 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 2.9.2 Synchronization of Multiple Channels (AutoSet ExtSig) When the AutoSetExtSig function is used, the following parameters are automatically set. • External control signals Master CH Slave CH OPR Signal OPR OUT OPR/SBY IN...

  • Page 79: Menu Index

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3. REFERENCE REFERENCE This chapter describes panel keys, parameter groups, parameter items and parameter functions in the follow- ing sections. Menu Index Use the Menu Index as index for the setting parameters in the MENU.
  • Page 80 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.1 Menu Index USB ID ........... 3-12 Variable IT ..........3-8...

  • Page 81: Function Description

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2 Function Description Function Description This section describes the panel keys and the parameter functions. 3.2.1 MENU Key (Parameter Setting) Pressing the MENU key will display the parameter group setting screen. The MENU parameters are described below: 1: Source Sets source-related parameters.
  • Page 82 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 2: Sweep Sets the sweep source-related parameters. Sweep Type Selects the sweep type. Linear: Linear sweep Fixed: Fixed sweep Random: Random sweep Linear 2: 2-slope linear sweep Sweep Range Selects the range function for sweep source.

  • Page 83: Linear Sweep

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 3: Sweep Sets the vales used for sweep source operation. The setting parameters are different depending on the sweep type. Linear Start Value Sets the start value for linear sweep.

  • Page 84: 2-Slope Linear Sweep

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) Random Start Adr Sets the start address for random sweep. Stop Adr Sets the stop address for random sweep. Bias value Sets the bias value (source value before sweep start).
  • Page 85 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 4: Sweep memory Displays the source data screen for random sweep Top Adr: Displays and sets the top address. Soft key: SetAdr Sets the top address. Soft key: PageUp Scrolls up one page.
  • Page 86 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 6: Measure Sets the measurement-related parameters. Auto Zero Switches the measurement auto zero function ON or OFF. Corrects measurement zero-point drifts approximately every 10 seconds. The AZ indicator turns ON.
  • Page 87 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 8: Compute Set the calculation-related parameters. Compare SW Switches the comparator calculation ON or OFF. Executes the comparator calculation. The calculation result is reflected on the comparator calculation indicator, the header of GPIB data output and the status byte.
  • Page 88 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 10. EXT SIGNAL Displays the Table Edit screen for the external control signals. OPR Signal Selects the input or output function of the external control signals: INTERLOCK and OPERATE IN/OUT.
  • Page 89 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) Complete Selects the output function of external control signals: COM- PLETE OUT and SYNC OUT. Meas Front: Outputs a negative pulse when the measurement starts. Meas End: Outputs a negative pulse when the measurement is completed and the period time ends.
  • Page 90 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 12: SYNC Sets the synchronization-related parameters. Master Selects the master channel for synchronization from CH1, CH2, CH3 and CH4. CH1 to 4 Sets channels to be synchronized.
  • Page 91 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.1 MENU Key (Parameter Setting) 14: SYSTEM Sets the system-related parameters. Limit Buzzer Buzzes when the limit (compliance) is activated. Turns ON the limit detection buzzer. OFF: Turns OFF the limit detection buzzer.

  • Page 92: Ch Key And 1Ch/4Ch Key

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.2 CH Key and 1CH/4CH Key 3.2.2 CH Key and 1CH/4CH Key CH key: Switches the setting channel. 1CH/4CH key (shift mode): Switches the home screen between 1-channel and 4-channel displays. 3.2.3 HOLD Key (Trigger Mode) Switches the source and measurement trigger mode.

  • Page 93: Shift Key (Shift Mode)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.5 SHIFT Key (Shift Mode) 3.2.5 SHIFT Key (Shift Mode) In the shift status, the SHIFT key turns ON and the blue characters on the panel are enabled. Press the SHIFT key again to release the shift mode.

  • Page 94: Enter Key

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 3.2.11 ENTER Key 3.2.11 ENTER Key Confirms selected items. 3.2.12 EXIT Key/LOCAL Key EXIT Key: Cancels selected items. The previous values return and the edit status is released. On the MENU layer, the display moves to the upper level.

  • Page 95: Technical References

    4.1.1 Output Terminals The following figure shows the 4-channel internal connections of the 6540/6541. The output high terminals are cut off from the internal circuits by the Operate/Standby relays in the Standby status. The output low terminals are conducted with the internal circuit even at power OFF, and shared among the four channels (common LO).

  • Page 96: Output Terminal Plug

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.1.1 Output Terminals The output terminal functions are common among the four channels and they adopt 4-wire connection. HO: HI OUTPUT terminal Functions as high-side voltage or current output terminal. HS: HI SENSE terminal Functions as high-side voltage output sensing terminal or voltage measurement input terminal.

  • Page 97: Remote Sensing (4-Wire Connection)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.1.2 Remote Sensing (4-Wire Connection) 4.1.2 Remote Sensing (4-Wire Connection) When connecting the 6540/6541 to a DUT, apply 4-wire connection. Figure 4-3 4-Wire Connections NOTE: The maximum remote sensing voltage (tolerable voltage difference between OUTPUT and SENSE) is ...

  • Page 98: Preventing Oscillation

    4.1.3 Preventing Oscillation 4.1.3 Preventing Oscillation The DUT itself may oscillate, or the 6540/6541 may oscillate if capacitance or inductance exceeding the specified value is connected (due to stray capacitance or retained inductance from connected cables, a scanner, or a fixture).

  • Page 99: Preventing Dut Oscillation

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.1.3 Preventing Oscillation 4.1.3.2 Preventing DUT Oscillation The DUT itself may oscillate due to the stray capacitance of cables and a test fixture. Particularly a high hFE transistor or a high gm FET has a higher probability of oscillation.

  • Page 100: Functions In Detail

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2 Functions in Detail Functions in Detail 4.2.1 Operations in DC Source Mode The following table shows operations in the DC source mode. Table 4-1 Operations in DC Source Mode (1 of 2)
  • Page 101 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.1 Operations in DC Source Mode Table 4-1 Operations in DC Source Mode (2 of 2) Operational Trigger Description Operation Remarks condition mode Changing AUTO Source value Tp: Period time the source...

  • Page 102: 4.2.2 Operations In Pulse Source Mode

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.2 Operations in Pulse Source Mode 4.2.2 Operations in Pulse Source Mode The following table shows operations in the pulse source mode. Table 4-2 Operations in Pulse Source Mode (1 of 2)
  • Page 103 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.2 Operations in Pulse Source Mode Table 4-2 Operations in Pulse Source Mode (2 of 2) Operational Trigger Description Operation Remarks condition mode Changing AUTO Source value Tp: Period time the source...
  • Page 104 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.2 Operations in Pulse Source Mode When the trigger mode is AUTO: • The measurement and the pulse cycle repeat at intervals of the specified by the period time. • If the measurement does not finish in the specified period, the pulse width does not change but the pulse cycle is extended.

  • Page 105: 4.2.3 Operations In Sweep Source Mode

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode 4.2.3 Operations in Sweep Source Mode The following table shows operations in the sweep source mode. Table 4-3 Operations in Sweep Source Mode (1 of 2)
  • Page 106 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode Table 4-3 Operations in Sweep Source Mode (2 of 2) Sweep type Description Waveform Last value Sweeps with staircase pulse waveforms of the step value between the first value and the last value.
  • Page 107 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode Changing the sweep measurement parameters The sweep measurement parameters are basically changeable only in the Standby or Suspend status, however the following parameters are changeable during sweep stop in the Operate status.

  • Page 108: Operations In Dc Sweep Source Mode

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode 4.2.3.1 Operations in DC Sweep Source Mode The following table shows operations in the DC sweep source mode. Table 4-4 Operations in DC Sweep Source Mode (1 of 2)
  • Page 109 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode Table 4-4 Operations in DC Sweep Source Mode (2 of 2) Operational Trigger Description Operation Remarks condition mode Changing AUTO Changes the Th: Hold time Auto range processing...

  • Page 110: Operations In Pulse Sweep Source Mode

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode 4.2.3.2 Operations in Pulse Sweep Source Mode The following table shows operations in the pulse sweep source mode. Table 4-5 Operations in Pulse Sweep Source Mode (1 of 2)
  • Page 111 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode Table 4-5 Operations in Pulse Sweep Source Mode (2 of 2) Operational Trigger Description Operation Remarks condition mode Changing AUTO Changes the Th: Hold time the source...

  • Page 112: Random Sweep And Random Pulse Sweep

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode 4.2.3.3 Random Sweep and Random Pulse Sweep The random sweep function sweeps waveforms of the source values stored in the memory from the spec- ified start address to the stop address.

  • Page 113: 2-Slope Linear Sweep

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode 4.2.3.4 2-Slope Linear Sweep The 2-slope linear sweep function initially sweeps staircase waveform (staircase pulse waveform) of the first step value between the designated first value and middle value. Next, it sweeps staircase waveforms (staircase pulse waveforms) of the second step value between the designated middle value and last value.

  • Page 114: Reverse Mode

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode 4.2.3.5 Reverse Mode Switching the reverse mode will switch the sweep operation between one-way sweep and round sweep. Single: One-way sweep Reverse: Round sweep The linear sweep sweeps as shown below.

  • Page 115: Output Value At Sweep Stop

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.3 Operations in Sweep Source Mode Table 4-7 Reverse Operations in Pulse Sweep Mode Operational Trigger Operation Remarks condition mode Pulse sweep AUTO Th: Hold time Tp: Period time Td: Measurement Bias value...

  • Page 116: Source Function

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.4 Source Function 4.2.4 Source Function This section describes restrictions on and operations of the source function. 4.2.4.1 Source Mode, Source Function and Setting Parameters The following shows relationships between the source-related setting parameters.

  • Page 117: Restrictions On Switching Source Function

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.4 Source Function 4.2.4.2 Restrictions on Switching Source Function There are following restrictions on switching the source function: While operating in the DC or pulse source mode, switching between VS and IS causes the Suspend status.
  • Page 118 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.4 Source Function Range to be set when the sweep range is Auto Source function Setting value Range 0 mV  |Vs|  3.2000 V Voltage source (VS) 3.2000 V < |Vs|  10.000 V 10 V 0 A ...

  • Page 119: Operate, Standby And Suspend

    Operate, Standby and Suspend Transitions among Operate, Standby, and Suspend The 6540/6541 has three output statuses; Operate, Standby and Suspend. The output relay is connected and the setting values are output in the Operate status, the output relay is disconnected in the Standby status, and the Suspend status is high-resistance or low-resistance sta- tus where the output relay is connected but Vsus voltages are output.

  • Page 120: Output Status And Internal Setting Values

    Pressing the SHIFT + OPR keys will set Suspend status. The OPR key blinks. As the output status is high resistance, it rarely affects the DUT. The 6540/6541 operates as follows in the Operate status. VS setting: Vsus  Current limit value setting  VS output IS setting: Vsus ...
  • Page 121 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.4 Source Function Setting Suspend conditions Setting the suspend voltage Set selecting 1) Source and then 3) Suspend V in the menu. The voltage range for the suspend voltage is the same as that for the voltage source function.

  • Page 122: Measurement Function

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.5 Measurement Function 4.2.5 Measurement Function 4.2.5.1 Measurement Function The measurement functions are classified into the following types: Voltage measurement function Current measurement function Resistance measurement function For the voltage source function, resistance values are displayed by measuring current.

  • Page 123: Measurement Ranging

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.5 Measurement Function 4.2.5.2 Measurement Ranging The measurement range is determined by the relationship between the measurement auto range ON/OFF and the source or measurement function. Measurement auto range OFF Measurement auto range ON...
  • Page 124 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.5 Measurement Function Measurement auto range for the DC source mode The following example shows how the measurement range and the limit range operate in the DC source mode. In this example, with the current limit value set to 200 mA, current of 1 mA is measured and then 100...
  • Page 125 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.5 Measurement Function Measurement auto range during sweep While sweeping, measurements are performed in each step. When the measurement range is set to Auto, auto ranging continues until measurement data is determined in each step.
  • Page 126 Thus, before increasing the range, the auto measurement function detects voltage overload and sets the output status to Standby. The operation above is unavoidable in principle. For using the 6540/6541 under the above condition, do NOT use the measurement auto range. NOTE: In the current source function, apply an external V voltage within the voltage limit range.

  • Page 127: Measurement Delay Time And Measurement Value

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.5 Measurement Function 4.2.5.3 Measurement Delay Time and Measurement Value The measurement timing in the pulse source mode or pulse sweep mode varies depending on the measure- ment delay timing (Td) as described below.

  • Page 128: Auto Zero Function

    4.2.5.4 Auto Zero Function The 6540/6541 has a function for canceling offset drift of the AD converter. This "Auto Zero function" periodically measures the zero point and cancels drift. When the Auto Zero function is set to ON, auto zero operation takes place under the following conditions: •...

  • Page 129: Measurement In Peak Hold

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.5 Measurement Function Tds: Source delay time Tp: Period time Tw: Pulse width Tit: Integration time (1 ms) Tk: Internal processing time Tm: Tit + Tk Output Peak hold circuit AD input...

  • Page 130: Limit (Compliance)

    For voltage source, the current limit is set. For current source, the voltage limit is set. Appropriate settings of these limit values can prevent DUT damage due to over-voltage or over-current. Both the voltage and current limits on the 6540/6541 have HI and LO limit values which can be set indi- vidually.

  • Page 131: Setting Limit Values

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.6 Limit (Compliance) 4.2.6.2 Setting Limit Values Setting Types Two types of limit value settings are available; one is Balance setting. This sets the same absolute value on both the polarities, + and -; the other is Individual setting. This sets a different value on each polarity.

  • Page 132: Displaying And Outputting Of Limit Detection

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.6 Limit (Compliance) 4.2.6.3 Displaying and Outputting of Limit Detection Four indicators, HLMT, LLMT, , and are used for displaying the limit detection. HLMT and LLMT indicate that measured data is obtained in the limit detection status.

  • Page 133: Alarm Detection

    Alarm Detection The 6540/6541 has a function to detect the following alarms to prevent itself and the DUT from being dam- aged. When any of these alarms is detected, a message is displayed and output to the remote device event status register, the error register and the header of measurement data.

  • Page 134: Source And Measurement Timing

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.8 Source and Measurement Timing 4.2.8 Source and Measurement Timing 4.2.8.1 Basic Source and Measurement Timing The following figure shows the basic timing of source and measurement. Tp: Repeat cycle for the DC and pulse source mode, or step cycle for the sweep source mode.
  • Page 135 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.8 Source and Measurement Timing (Measurement delay time (Td) +19 s < period time (Tp) [Td + 19 s < Tp] • Condition) Source mode: DC, pulse or sweep Measurement 19 s or more Source delay time (Tds) ...
  • Page 136 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.8 Source and Measurement Timing Relationship between restrictions and source mode The table below shows the relationship between the restrictions described above and the source mode. Source mode Restriction DC-SWP PLS-SWP [Tds + 19 s < Tp] [Td + 19 s <...

  • Page 137: Measurement Delay And Settling Time

    4.2.8.3 Measurement Delay and Settling Time In the pulse source or sweep source mode, the 6540/6541 waits for source value and sample settling and then starts measurement. This section describes the settling time of the 6540/6541 and the measurement delay to be set.
  • Page 138 4.2.8 Source and Measurement Timing Current source The settling time (Ts) of the 6540/6541 is defined by the current source value (Is), the current sense resistance (Rs), the load voltage (VRL = Is  RL), and the output response, as shown below.

  • Page 139: Integration Time And Processing Time

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.8 Source and Measurement Timing 4.2.8.4 Integration Time and Measurement Time The measurement time (Tm) is calculated from the integration time (Tit), measurement data processing time (Tk) and internal processing time (Ts) according to the following formula: Tm = Tit + Tk + Ts The integration time (Tit) can be selected between 100 s and 200 ms.

  • Page 140: Auto Range Delay

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.8 Source and Measurement Timing (Example) DC source mode, integration time: 1 PLC (50 Hz), Memory Store: ON, NULL calculation: ON, Scaling calculation: ON, Max/Min calculation: ON, Comparator calculation: ON Tit = 20 ms Tk = 0.04 ms...
  • Page 141 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.8 Source and Measurement Timing Measurement range Setting value Example 3 A 5000 ms 30 A Tar/10 500 ms 300 A Tar/100 50 ms 3 mA Tar/1000 5 ms 30 mA or higher 0 ms •...

  • Page 142: Calculation Functions

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.9 Calculation Functions 4.2.9 Calculation Functions 4.2.9.1 NULL Calculation NULL calculation is used to cancel leak current or offset values. Calculation expression R = X - Xnull Calculation result Present measurement data...

  • Page 143: Scaling Calculation

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.9 Calculation Functions 4.2.9.2 Scaling Calculation Calculation expression The scaling calculation is defined using the following formula: X-Constant B Scaling calculation =  Constant C Constant A X: Measurement value Operation •...

  • Page 144: Comparator Calculation

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.9 Calculation Functions 4.2.9.3 Comparator Calculation Calculation expression The result of the comparator calculation is judged as shown below: Du < X ...... HI  X  Du ....GO X < D .......

  • Page 145: Max/Min Calculation

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.9 Calculation Functions 4.2.9.4 Max/Min Calculation Calculation expression The Max/Min calculation obtains the maximum, minimum, average, and total values while the cal- culation is set to ON. Calculation result Select the parameters, 8) Compute and 5) Max/Min View on the menu screen to refer to the results.

  • Page 146: External Control Signal Functions

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.10 External Control Signals 4.2.10 External Control Signals The external control signals are used to synchronize multiple units or channels and control external devices such as scanners and digital multimeters. The following table shows the signal names, levels and functions.
  • Page 147 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.10 External Control Signals External control signal input specification Maximum input voltage: 24 V TTL level or contact signal 6540/6541 External control signal output specification Maximum input voltage: 24 V LED or other indicator, or...

  • Page 148: Internal Configuration Of External Control Signals

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.10 External Control Signals 4.2.10.1 Internal Configuration of External Control Signals The external control signals are connected internally on the 6540/6541 to enable 4-channel synchroniza- tion as shown below. Enable TRIGGER IN Enable TRIGGER IN...

  • Page 149: Restrictions On Using External Trigger

    The minimum time is required for the time Top from specifying Operate by a remote command or the external signal (OPR In signal) to inputting the external trigger. (See Table 4-14.) Allow the 6540/6541 at least 10 ms after completion of the previous sweep to input the TRIGGER IN signal for sweep start.

  • Page 150: Restrictions On Tp, Tp (Ext), Th And Th (Ext)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.10 External Control Signals Table 4-12 Restrictions on Tp, Tp (ext), Th and Th (ext) Measurement Tp, Tp (ext) Tp (ext) min Th, Th (ext) Thp (ext) 0.1 ms Tp Tp (ext)-TA 0.7 ms...
  • Page 151 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.10 External Control Signals • Example for the DC source mode • Example for the sweep source mode 4-57...

  • Page 152: Multiple Unit And Channel Operation

    4.2.11.1 Synchronous Operation The synchronous operation of the 6540/6541 allows synchronous measurement in the DC source mode, and synchronous source and measurement in the pulse source and sweep source modes. The timing control for the synchronization is performed by the external control signals; TRIGGER IN, SYNC OUT and OPERATE OUT, and the time parameter settings such as measurement delay and source delay.
  • Page 153 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.11 Multiple Unit and Channel Operation Source and measurement Measure ment Source and measurement Measure ment Synchronous delay time  s Tsync = Approx. 5 4-59...
  • Page 154 4.2.11 Multiple Unit and Channel Operation Restrictions on setting The 6540/6541 has a Tsync time delay of approximately 5 s from the external trigger input to • the measurement start. Consider this time delay when using two or more 6540/6541 units in synchronous operation.
  • Page 155 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.11 Multiple Unit and Channel Operation From the above, considering the Tsync time, make the relevant settings as follows: Tds1  Tds2 + Tsync (5 s) Td1  Td2 + Tsync (5 s) Tp1 ...

  • Page 156: Measurement Data Memory Function

    4.2.12 Measurement Data Memory Function 4.2.12 Measurement Data Memory Function The 6540/6541 features a measurement data memory for storing up to 10000 measurement data items. This section describes how data is stored in and cleared from the measurement data memory. 4.2.12.1 Memory Store Setting the Store mode to ON will display "ST"...

  • Page 157: 4.2.14 Error Log

    The 6540/6541 holds the error number in the error log memory when it detects an error. Operation The 6540 has the maximum five memory areas for error logs and the 6541 has ten and they operate as follows: • Error logs are stored in the order of detection.

  • Page 158: Self-Test Items

    4.2.15 Self Test 4.2.15 Self Test The 6540/6541 can self-test internal operations by turning on the power, executing the remote command, or manual operation. The self-test items and output results are shown below. Table 4-16 Self-Test Items (1 of 2)
  • Page 159 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.2.15 Self Test Table 4-16 Self-Test Items (2 of 2) Execution method TER register (*1) Error code Description Power ON *TST? Register Data IM 3 A ZERO IM 30 A ZERO IM 300 A ZERO...

  • Page 160: Operational Principles

    LO OUTPUT 4.3.2 Operational Principles The 6540/6541 is equipped with the source and measurement circuits of four channels. Since the circuit configuration is common among all the four channels, the operations on one channel are described below. • The 6540/6541 contains a DA converter SrcDAC, for setting the voltage source or current source. It also has two DA converters, HiLimitDAC and LoLimitDAC for setting the current limits and the voltage limit.
  • Page 161 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 4.3.2 Operational Principles • Current range switching is done by switching the current detection resistor Rs. Consequently, the current measurement always takes place in the same range as that of current source or current-limit.

  • Page 163: Remote Programming

    This chapter also contains lists of commands for programming and introduces program examples. Using Interface The 6540/6541 is equipped with the USB interface. The GPIB and LAN interfaces are also available as fac- tory options (6541 only). These interfaces cannot be used at the same time. Select which interface you wish to use.

  • Page 164: Usb

    5.2.3.1 Connecting with PC Connect the USB connector (type B) on the rear of the 6540/6541 to that on the PC with a cable. Fully insert all connectors. Use a USB hub to connect multiple instruments to a single PC.

  • Page 165: Gpib

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.3 GPIB GPIB 5.3.1 Overview GPIB (General Purpose Interface Bus) allows external control of the 6541 measurement function settings, parameter settings and reading data, making it simple to configure an automated measurement system.

  • Page 166: 5.3.2 Precautions When Using Gpib

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.3.2 Precautions when Using GPIB 5.3.2 Precautions when Using GPIB Do not use connection cables to measuring instruments or bus cables to controllers that are longer than necessary. Ensure that these cables do not exceed 20 m in length. ADC CORPORATION offers the following standard bus cables.

  • Page 167: Lan

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.4 LAN 5.4.1 Overview To remotely control the 6541 via the LAN interface, connect the LAN port on the panel to a personal com- puter. The 6541 can be controlled by plugging in a network or directly connecting to a host computer.

  • Page 168: Communication Setting On Pc

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.4.3 Communication Setting on PC 5.4.3 Communication Setting on PC When controlling the 6541 remotely via the LAN interface, make the communication settings of the con- trol software on the computer side as follows:...
  • Page 169 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.4.5 IP Connection Check The following shows an example of "ping" command execution results when the proper connection is con- firmed. C:\>ping 192.168.0.1 Pinging 192.168.0.1 with 32 bytes of data: Reply from 192.168.0.1: bytes=32 time<10ms TTL=128 Reply from 192.168.0.1: bytes=32 time=20ms TTL=128...

  • Page 170: 5.4.6 Communication Method

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.4.6 Communication Method 5.4.6 Communication Method The 6541 uses TCP/IP to communicate with a computer. The TCP/IP communication is performed accord- ing to the following procedure: After turning ON, the 6541 waits for the computer sending a TCP/IP connection request with the specified port number (refer to Table 5-4.)

  • Page 171: Status Register Structure

    The 6540/6541 has a hierarchical status register structure that conforms to the IEEE standard 488.2-1987 and can send various statuses of the 6540/6541 to the controller. The following explains an operational model of the status structure and allocation of events.

  • Page 172: Status Byte Register (Stb)

    Master Standard Event Status Register (MSESR) • Device Event Status Register (DESR) • Error Event Register (ERR) The Figure 5-1 and Figure 5-2 show the 6540/6541 status register structure. Status Register Structure Device Event Status Register Device Event Status Enable Register Comparator HI...
  • Page 173 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Slave Device Slave Device Event Status Register 1 to 4 Event Status Enable Register 1 to 4 Device Event Status Register Device Event Status Enable Register Status Byte Register...

  • Page 174: Status Byte Register Structure

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Event Enable Register Each Event Register has an Enable Register that decides which bit is to be enabled. The Enable Register sets the relevant bits in decimal values.
  • Page 175 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-5 Status Byte Register (STB) (6540) Name Description Not in use Always set to 0 Not in use Always set to 0 Not in use Always set to 0...
  • Page 176 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-6 Status Byte Register (STB) (6541) Name Description Not in use Always set to 0 Not in use Always set to 0 Not in use Always set to 0...
  • Page 177 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Standard Event Status Register The following tables show the allocations of the Standard Event Status Register. Table 5-7 Standard Event Status Register (SESR) (6540) Name Description ON: Set to 1 when all operations are complete after receiving the *OPC command.
  • Page 178 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-8 Standard Event Status Register (SESR) (6541) Name Description ON: Set to 1 when bit 0 of MSESER is 1 and bit 0 of MSESR is 1.
  • Page 179 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-9 Slave Standard Event Status Register (SSESR) (6541) Name Description Not in use Always set to 0 Not in use Always set to 0 Not in use Always set to 0 ON: Set to 1 when a device-dependent error occurs.
  • Page 180 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-10 Master Standard Event Status Register (MSESR) (6541) Name Description ON: Set to 1 when all operations are complete after receiving the *OPC command. Operation Complete Not in use...
  • Page 181 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Device Event Status Register The following tables show the allocations of the Device Event Status Register. Table 5-11 Device Event Status Register (DESR) (6540) Name Description ON: Set to 1 when the comparator calculation result is HI.
  • Page 182 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Common conditions in which the Device Event Status Register is cleared • All cleared when the power is turned ON. • All cleared by *CLS. • All cleared when read by DSR?.
  • Page 183 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-12 Device Event Status Register (DESR) (6541) Name Description ON: Set to 1 when the corresponding bit of SDESER 1 to 4 is 1 and the cor- Comparater HI responding bit of SDESR 1 to 4.

  • Page 184: Slave Device Event Status Register (Sdesr)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Table 5-13 Slave Device Event Status Register (SDESR) (6541) Name Description ON: Set to 1 when the comparator calculation result is HI. Comparater HI ON: Set to 1 when the comparator calculation result is GO.
  • Page 185 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Common conditions in which the Slave Device Event Status Register is cleared • All cleared when the power is turned ON. • All cleared by *CLS. • SDESR of the target channels is all cleared when read by SDSR?.

  • Page 186: Errors Register (Err)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.5 Status Register Structure Error Register The following table shows the allocations of the Error Register. Table 5-14 Errors Register (ERR) (6540) Description ON: Set to 1 when a self-test error occurs at power ON.

  • Page 187: Data Output Format (Talker Format)

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.6 Data Output Format (Talker Format) Data Output Format (Talker Format) The measurement data and the measurement data memory (RECALL) are read in the following format. Multiple data reading  E ...
  • Page 188 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.6 Data Output Format (Talker Format) Header Sub header Main header The header is not output when the header setting is OFF. • Main header DV: DC voltage measurement DI: DC current measurement...
  • Page 189 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.6 Data Output Format (Talker Format) Mantissa part and exponent part The exponent columns below show exponents when scaling calculation is not performed. Unit display Measurement function Decimal point and unit symbol form...
  • Page 190 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.6 Data Output Format (Talker Format) Measurement function Mantissa part Exponent part High limit value detected in resistance measurement *1 +9.99999 E+37 Low limit value detected in resistance measurement *1 +9.99999 E+36 Range over...

  • Page 191: Remote Commands

    (,). For more information on the data types, refer to Section 5.7.2 "Data Format." Describing multiple commands The 6540/6541 allows multiple commands to be described consecutively or separated by semicolon (;), comma (,), or space ( ) in one line. 5-29...

  • Page 192: Data Format

    Voltage Current Current Current NOTE: When numeric data is expressed in an exponent format for the 6540/6541, the number conversion   time becomes too long if the exponent is set to 31 or higher (xx.xxxE 31). The exponent setting ...

  • Page 193: 5.7.3 Remote Command List

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List 5.7.3 Remote Command List The Default column shows default settings at Power ON or at factory shipment. • The Power ON column shows the status when the power is turned ON.
  • Page 194 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Source Source mode DC mode Pulse modem DC sweep mode Pulse sweep mode Response: MD0 to MD3...
  • Page 195 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS G data Source Spot command Executes the measurement trigger after setting the source value for the currently set source function.
  • Page 196 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Source Trigger mode AUTO HOLD Response: M0 or M1 Operate/Standby Sets the output to OFF (Standby)
  • Page 197 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Sweep Start value Linear sweep (100 [st, sp, V/ step] Stop value mV/10 step: Step value (The polarity is ignored.) (100 V/...
  • Page 198 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Sweep 2-slop linear SM [fd, First value (100 md, ld, sweep V/ st1, st2]...
  • Page 199 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Sweep Random sweep N [adr] Random sweep memory data setting starts from the N command and completes at the P command.
  • Page 200 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Sweep RTB OFF (Stays at the final value when sweep stops.) (Return To Bias) (Returns to the bias value when sweep stops.)
  • Page 201 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Integration time 100 µs sure 500 µs ment 1 ms 5 ms 10 ms...
  • Page 202 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Measurement Store OFF sure buffer memory ment Normal ON Response: ST0 to ST1 Initializes the stored data.
  • Page 203 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Measurement Reads out the number of stored data sure buffer memory Response: <dddd> ment...
  • Page 204 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Scaling calcula- KA a a: Constant A (0 (zero) is invalid.) sure tion ment...
  • Page 205 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS System User parameter RPP a, b Copies setting parameters from channel a to chan- nel b.
  • Page 206 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS System Comparator calculation buzzer ON (Comparator calculation result: HI) ON (Comparator calculation result: GO)
  • Page 207 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS System Interlock STBY In signal input (IN) OPR/STBY In signal input (IN) InterLock In signal input (IN)
  • Page 208 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Remo Block delimiter CRLF Response: DL0 or DL1 Header Response: OH0 or OH1 Time stamp...
  • Page 209 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Remo Status SDSE ch, DSE setting of each channel (0 to 65535) data SDSE? ch...
  • Page 210 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Cali Calibration range Sets the calibration range. Voltage range Current range tion XR-2 3 A...
  • Page 211 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Commands compatible with former models Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Source Function and Voltage source function 3 V range...
  • Page 212 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.3 Remote Command List Default Operation Active Item Command Description chann Power Factory DC/pulse Sweep shipment OPR/SUS OPR/SUS Source Operate/Standby Sets the output to OFF (Standby). Sets the output to ON (Operate).

  • Page 213: Ter? Command

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.7.4 TER? Command 5.7.4 TER? Command The TER? command reads out the self set results. Command response ddddd,ddddd,ddddd,ddddd,ddddd Descriptions of values a, b, c, d and e The TER register column in Table 4-16 shows the error factors and register values for a, b, c, d and e.
  • Page 214 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 5.8 Sample Programs Sample Programs This section describes program examples to remotely control the 6540/6541 via GPIB or USB. Download these programs from ADC's website. http://www.adcmt.com/samplesoft/samplesoft_01.html 5.8.1 Program Example for GPIB [Operating environment]...

  • Page 215: Performance Test

    6. PERFORMANCE TEST PERFORMANCE TEST This chapter describes the methods for checking whether the 6540/6541 operates in the specified accuracy. Measuring Instrument Necessary for Performance Test For the performance test, use a measuring instrument which meets the specifications shown in Section 7.1, "Measuring Instrument Necessary for Calibration."...
  • Page 216 Set the DMM to DCV, auto range and integration time of 10 PLC or longer. Set the 6540/6541 to DC source mode, AUTO trigger and integration time of 200 Select voltage source voltage measurement, and set the output to Operate.
  • Page 217 CALIBRATION This chapter describes how to calibrate the 6540/6541 to perform within the specified accuracy ranges. In order to use the 6540/6541 in the specified accuracies, periodic calibration at least once a year is recom- mended. Contact an ADC CORPORATION sales representative for the calibration service.

  • Page 218: Safety Precautions

    Temperature Relative humidity 70 % or lower Allow the 6540/6541 to warm-up for 2 hours or longer before calibration. Allow other measuring instruments to be used in calibration to warm-up for the period of time spec- ified before the calibration.

  • Page 219: Connections

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.3 Connections Connections The following figure shows connections for calibrating the 6540/6541 using a DMM. 6541 (a) Checking and calibrating voltage source measurement 6541 (b) Checking and calibrating current source measurement Figure 7-1 Connections for Calibration...

  • Page 220: Calibration Points And Tolerance Ranges

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.4 Calibration Points and Tolerance Ranges Calibration Points and Tolerance Ranges For calibration, use measuring instruments satisfying the required accuracy described in Section 7.1, "Mea- suring Instrument Necessary for Calibration" to meet the tolerance ranges shown in the following table.
  • Page 221 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.4 Calibration Points and Tolerance Ranges Calibration point Item Range Tolerance range ZERO F.S. 3 A +3.000 A 100 pA Current HI limit 30 A +30.00 A 1 nA 300 A +300.0 A 10 nA...

  • Page 222: Calibration Procedure

    7.5 Calibration Procedure Calibration Procedure The 6540/6541 is calibrated by using the remote commands through USB, GPIB or LAN. Figure 7-2 to Figure 7-6 show the calibration procedures. For more information on the remote commands, refer to the calibration parameters described in Section 5.7.3, "Remote Command List."...

  • Page 223: Calibration Procedure

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5 Calibration Procedure Voltage source /limit calibration [Calibration mode setting] VS mode VL-Hi mode VL-Lo mode [Range setting] Within tolerance range? Enters the DMM data input mode. DMM data acquisition XD DMM data DMM data input *Out-of-range setting results in a parameter error.

  • Page 224: Calibration Procedure

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5 Calibration Procedure Voltage measurement calibration VM mode [Range setting] Within tolerance range? Enters the DMM data input mode. DMM data acquisition XD DMM data DMM data input *Out-of-range setting results in a parameter error.

  • Page 225: Calibration Procedure

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5 Calibration Procedure Current source/limit calibration [Calibration mode setting] IS mode IL-Hi mode IL-Lo mode [Range setting] Within tolerance range? Enters the DMM data input mode. DMM data acquisition XD DMM data DMM data input *Out-of-range setting results in a parameter error.

  • Page 226: Calibration Procedure

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5 Calibration Procedure Current measurement calibration IM mode [Range setting] Within tolerance range? Enters the DMM data input mode. DMM data acquisition XD DMM data DMM data input Measurement data read out...

  • Page 227: 7.5.1 Overall Calibration Procedure

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5.1 Overall Calibration Procedure 7.5.1 Overall Calibration Procedure This section describes the overall calibration procedure according to Figure 7-2 Calibration Procedure (1). Enter the calibration mode by CAL1. When executing all the calibrations, initialize calibration data only once by XINI at the start of the calibrations.

  • Page 228: 7.5.3 Voltage Measurement Calibration

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5.3 Voltage Measurement Calibration 11. Check the full-scale calibration value. Fine-adjust the calibration coefficient by XUP and XDN. 12. Move to the next step When changing the voltage calibration mode: XNXT When moving to voltage measurement calibration:XNXT  XVM 7.5.3...
  • Page 229 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 7.5.4 Current Source/Current Limit Calibration 7.5.4 Current Source/Current Limit Calibration Select the current calibration mode. Current source: Current HI limit: XILH Current LO limit: XILL Select the range. 3 A range: XR-2 30 A range:...

  • Page 231: Specifications

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8. SPECIFICATIONS SPECIFICATIONS All accuracy specifications are guaranteed for one year at a temperature of 23  5C and a relative humidity not exceeding 85 %. Source and Measurement Setting Measurement Measurement...
  • Page 232 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement Voltage/current limit (compliance) range: Setting range Setting resolution Voltage limit 0 V to 3.200 V 1 mV 3.201 V to 10.00 V 10 mV 0.010 A to 3.200 A...
  • Page 233 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement Accuracy 1-day stability Temperature coefficient Range (ppm of setting + A + A (% of setting + A +A  Vo/1 V)  Vo/1V)/C 3 A Current source 0.03 + 6 nA + 20 pA...
  • Page 234 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement Accuracy 1-day stability Temperature coefficient Range  (ppm of reading + A + A (%of reading + A + A  Vo/1 V)  Vo/1V)/C 3 A Current 0.03 + 5.5 nA + 20 pA...
  • Page 235 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement The full-scale item tolerances listed below are added to the measurement accuracies with integration time of 100 s to 10 ms and P/H, and the 1-day stability. Integration time...
  • Page 236 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement Current source Low frequency noise High frequency noise Load Range resistance DC to 100 Hz DC to 10 kHz DC to 20 MHz 3 A 10 k 10 nA...
  • Page 237 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement Time to reach the final value 0.1 % when varying from zero to the full scale. Settling time: Setting conditions: Source values and limit values are full-scale settings.
  • Page 238 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.1 Source and Measurement Output resistance: Output cable not included Maximum load capacitance: Maximum load capacitance that does not generate oscillation in volt- age source or voltage limit status Output resistance ()

  • Page 239: Source And Measurement Function

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.2 Source and Measurement Function Source and Measurement Function Source and measurement channel: 4 channels DC source and measurement: Source and measurement of DC voltage and current Pulse source and measurement: Source and measurement of pulse voltage and current...
  • Page 240 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.2 Source and Measurement Function 1 V Max (at output voltage of less than 8 V) Maximum remote sensing voltage: 0.5 V Max (at output voltage of 8 V or higher) HI OUTPUT - HI SENSE, LO OUTPUT - LO SENSE (The voltage between HI SENSE and LO SENSE must be within the maximum output voltage range.)

  • Page 241: Interface Functions

    8.3 Interface Functions Interface Functions USB: USB 2.0 Full-speed Connector; Type B (6540: single per channel, 4 USB ports in total) GPIB: Compliant with IEEE-488.2-1987 6541+01 (factory option) Interface function; SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0, E2 Connector;...

  • Page 242: Setting Time

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.4 Setting Time Setting Time 50 s (Set more than the integration time for measurement ON) Minimum pulse width: Under fixed source/measurement range, integration time of 100 s, the Minimum step (repeat) time:...
  • Page 243 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.4 Setting Time Measurement delay time: Setting range Resolution Setting accuracy 1 s 0.050 ms to 60.000 ms 10 s  (0.1 % + 10 s) 60.01 ms to 600.00 ms 100 s 600.1 ms to 6000.0 ms...

  • Page 244: General Specifications

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.5 General Specifications General Specifications Operating environment conditions: Temperature: 0 ºC to +50 ºC (up to 0.5 W/channel at current sink) Relative humidity: 85 % or less with no condensation However, temperature: 0 ºC to +40 ºC for power of up to 2.5 W/chan- nel at current sink, and temperature: 0 ºC to +35 ºC for power of up to...

  • Page 245: Supplementary Descriptions

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.6 Supplementary Descriptions Supplementary Descriptions 8.6.1 How to Calculate Accuracy for Current Source, Current Measurement and Current Limit Example) Calculating the accuracy in current source of 3 mA (3 mA range) with resistance of 1 k...

  • Page 246: How To Calculate Accuracy For Resistance Measurement

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.6.2 How to Calculate Accuracy for Resistance Measurement 8.6.2 How to Calculate Accuracy for Resistance Measurement Example) Calculating the accuracy in current source of 3 mA (3 mA range) and voltage measurement of 3 V (3 V range) Accuracies for resistance measurement must be calculated separately.
  • Page 247 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual 8.6.2 How to Calculate Accuracy for Resistance Measurement CMV item digit value = A  Vo / 1 V = 20 nA  3 V / 1 V (*1) = 60 nA The source resolution in the 3 mA range for current source is 100 nA according to the specification.

  • Page 249: Appendix

    A.1 When Problems Occur (Before Requesting Repairs) If any problem is encountered when using the 6540/6541, inspect the unit referring to Table A-1. If the problem cannot be solved by the suggested remedial actions, contact an ADC CORPORATION sales representative.
  • Page 250 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Table A-1 Items to be Inspected before Requesting the Repair (2/2) Q (Symptom) A (Cause and Solution) 3. Does not output the Cause: The unit is in the HOLD status. measurement values.

  • Page 251: A.2 Error Message List

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual A.2 Error Message List If an error occurs when using the 6540/6541, an error code and a message appear on the screen. The contents are explained in the following: Table A-2 6541 Error Message List (1/2)
  • Page 252 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Table A-2 6541 Error Message List (2/2) Error code Message *1 Channel display Description OVL Check OVL detection check error P/H Check Peak hold test error CAL dt Lost Depends CAL data lost...

  • Page 253: A.3 Execution Time

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual A.3 Execution Time A.3.1 Remote Execution Time (Typical Value) Measurement execution time Conditions: Source range; fixed Measurement range; fixed, Trigger mode; external trigger, Number of measurement digits; 5 digits Integration time; 100 s, Measurement delay; 0.3 ms, Source delay; 30 s Period;...
  • Page 254 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Data read time Number 6540 6541 6541 6541 Item of data execution time GPIB Source value data read by query 5 ms 5 ms 1 ms 5 ms Measurement buffer memory read after RDT?

  • Page 255: Internal Processing Time (Typical Value

    6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual A.3.2 Internal Processing Time (Typical Value) Source processing time Time from external trigger signal input until the source value (pulse value or base value) starts to change. For the time from when the source value changes to when the source value settles, refer to Section 4.2.8.3, "Measurement Delay and Settling Time."...

  • Page 257: Dimensional Outline Drawing

    DIMENSIONAL OUTLINE DRAWING EXT-1...
  • Page 258 EXT-2...

  • Page 259: Alphabetical Index

    ALPHABETICAL INDEX ALPHABETICAL INDEX 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual ALPHABETICAL INDEX [Numerics] Displaying and Outputting of Limit Detection ........4-38 2-Slope Linear Sweep ......4-19 DUT Connection ........4-1 4-Wire Connection ........4-3 6540 Front Panel ........2-1 6540 Rear Panel ........
  • Page 260 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Alphabetical Index Overview ..........5-2, 5-3, MAC address .......... 3-12 Master ............. 3-12 Max/Min SW .......... 3-9 Max/Min View ........3-9 PANEL AND OPERATION ....2-1 Meas Delay (Td) ........3-7 Param Load ..........3-11 Measure SW ..........
  • Page 261 6540/6541 4-Channel DC Voltage Current Source/Monitor Operation Manual Alphabetical Index Scaling Calculation ......... 4-49 Scaling SW ..........3-9 USB ............5-2 Scaling value A ........3-9 USB ID ........... 3-12 Scaling value B ........3-9 USB Remote Execution Time Scaling value C ........3-9 (Typical Value) ........
  • Page 263 IMPORTANT INFORMATION FOR ADC CORPORATION SOFTWARE PLEASE READ CAREFULLY: This is an important notice for the software defined herein. Computer programs including any additions, modifications and updates thereof, operation manuals, and related materials provided by ADC CORPORATION (hereafter referred to as "SOFTWARE"), included in or used with hardware produced by ADC CORPORATION (hereafter referred to as "PRODUCTS").
  • Page 264 5. EXCEPT TO THE EXTENT EXPRESSLY PROVIDED HEREIN, ADC CORPORATION HEREBY EXPRESSLY DISCLAIMS, AND THE PURCHASER HEREBY WAIVES, ALL WARRANTIES, WHETHER EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, (A) ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND (B) ANY WARRANTY OR REPRESENTATION AS TO THE VALIDITY, SCOPE, EFFECTIVENESS OR USEFULNESS OF ANY TECHNOLOGY OR ANY INVENTION.

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