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Keithley 2281S Quick Start Manual
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Keithley 2281S Quick Start Manual

Precision dc supply and battery simulator
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2281S Precision DC Supply and Battery Simulator
Quick Start Guide

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Summary of Contents for Keithley 2281S

  • Page 1 2281S Precision DC Supply and Battery Simulator Quick Start Guide...

  • Page 2: Safety Precautions

    AC mains connections. familiar with the safety precautions required to avoid possible injury. Read and follow all Certain Keithley measuring instruments may be connected to mains. These instruments wi l l installation, operation, and maintenance information carefully before using the product.
  • Page 3 Do not connect switchi n g cards directly to unlimited power circuits. They are intended to be Chassis connections must only be used as shield connections for measuring circuits, NOT as used with impedance-limited sources. NEVER connect switching cards directly to AC protective earth (safety ground) connections.
  • Page 4 (note that selected parts should be purchased only through Keithley Instruments to maintain Storage temperature -20 °C to 70 °C (-4 °F to 158 °F), 5 % to 95 % relativ e accuracy and functionality of the product).
  • Page 5 Introduction Thank you for choosing a Keithley Instruments product. The Model Description Model 2281S Precision DC Supply and Battery Simulator is a highly number sensitive, accurate, programmable power supply that sources stable 2281S-20-6 Precision DC Supply and Battery Simulator, 20 V, 6 A low-noise voltage, and monitors load currents over a wide dynamic range from amperes to nanoamperes,.
  • Page 6 CD-ROM, and cable housing. Remove the packaging insert. Remove the 2281S from the box. Do not lift the 2281S from the front bezel. Lifting the instrument by the front bezel can cause instrument damage. Inspect the instrument for any obvious signs of physical...
  • Page 7 You should have received the 2281S with the following accessories, shown in the photograph: Power line cord KickStart Quick Start Guide 2281S Quick Start Guide (this document) 2281S Precision DC Supply & Battery Simulator Product Information CD-ROM Model CA-180-3A CAT5 Crossover Cable for Ethernet...
  • Page 8 , or 60 V DC for peak Use high-reliability fail-safe interlock switches to disconnect equipment rated for dry locations. Keithley Instruments products power sources when a test fixture cover is opened. are only rated for dry locations.  Where possible, use automatic handlers so operators are not...
  • Page 9 You can use the 2281S on a bench or in a rack. Please see the  In many systems, during power up, the outputs may be in an instructions that came with your rack-mount kit if you are installing unknown state until they are properly initialized.
  • Page 10 The power cord supplied with the 2281S contains a separate protective earth (safety ground) wire for use with grounded outlets. When proper connections are made, the instrument chassis is connected to power-line ground through the ground wire in the power cord. In addition, a redundant protective earth connection is provided through a screw on the rear panel.
  • Page 11 Rear panel output terminals AWG 20 to AWG 12 When making two-wire connections with the 2281S, you must short both Output Hi and Sense Hi and Output Lo and Sense Lo with the shorting jumpers. If you do not do this, the display will show incorrect voltage output readings.
  • Page 12 Two-wire (local sensing) DUT connection to front panel Two-wire (local sensing) DUT connection to rear panel...
  • Page 13 Four-wire remote sense connection After making the connections, slide the cable housing over the Using four-wire remote sensing connections ensures that the output mating connector and wires. programmed voltage is applied to the load and compensates for the voltage drop in the leads between the power supply and the load. As shipped, the sense terminals are connected to the output terminals by shorting jumpers.
  • Page 14 After making the connections, slide the cable housing over the output mating connector and wires. Failure to install the cable housing may result in personal injury or death due to electric shock.
  • Page 15 The action of the TRIGGER key depends on the trigger method that is selected: The front panel of the 2281S allows you to set up most instrument  If manual triggering is selected, TRIGGER causes the instrument functions and features and perform sourcing and measuring to make a measurement.

  • Page 16: Startup Screen

    You can choose a function by turning the navigation control or pressing the soft keys and pressing Enter to access the respective When you turn on the 2281S, you will see the following startup home screens of the function. screen.
  • Page 17 The top row on the Home screen displays the status and event indicators. You can select these options to open dialog boxes that provide additional information about the status or event. The OUTPUT view area of the Home screen displays the value of the present outputs and status indicators.
  • Page 18 Home screen for battery test: The top row on the Home screen displays the status and event indicators. You can select these options to open dialog boxes that provide additional information about the status or event. The OUTPUT view area of the Home screen displays the values of the battery under test.
  • Page 19 Home screen for battery simulator: The top row on the Home screen displays the status and event indicators. You can select these options to open dialog boxes that provide additional information about the status or event. The OUTPUT view area of the Home screen displays the values and status of the battery simulator.
  • Page 20 Menu screen overview From this screen, you can select source, measure, graph, trigger, and system setup menus. These menus allow you to choose options to set up your instrument for your applications. Select a setup item by In any function, when you press the MENU key on the front panel, either scrolling the navigation control or using the arrow keys to the Menu screen is displayed.
  • Page 21 You can also change the value using either the arrows keys or navigation control. Press the I-Limit soft key. The editing window is displayed at See the "General operation" section of the 2281S Reference Manual for the bottom. additional details and remote interface examples.
  • Page 22 Select a measure function Specify a measurement range The 2281S allows you to perform the following measure functions in You can set ranges for the measurement values in the power supply the power supply function. function. You can set specific ranges or allow the instrument to choose the ranges automatically.

  • Page 23: Application Examples

    2281S-20-6. Select the range. You are returned to the MEASURE SETTINGS screen. In this application, we will use the Model 2281S to charge a lithium- ion battery from empty to full, and measure battery capacity (amp- Voltage...
  • Page 24 The battery under test and the Model 2281S-20-6 can be connected by two-wire sense connections. However, four-wire sense 3. Under Source, select (dis)charge to conduct settings for connections, as shown in the following figure, is recommended discharging the battery to the empty state first.
  • Page 25 16. Assign a name to the battery model. 7. Under Measure, select A-H. Starting from this step, 2281S will 17. Select Yes to save the battery model. The Model 2281S-20-6 can charge the battery, measure its capacity, and generate a battery save up to 9 battery models.
  • Page 26 The following example demonstrates the procedure of simulating a battery with Model 2281S-20-6. This example shows how to use a Model 2281S to replace a real battery to power your device and test the device in different battery states more efficiently.
  • Page 27 Select I-Limit in the soft key area 2. The maximum Select the battery simulator function in the startup screen. current from 2281S to the DUT cannot be set higher than 6.1 A. Select Model in the soft key area 1.

  • Page 28: Contact Information

    Contact information: For further information ASEAN / Australia (65) 6356 3900 Tektronix and Keithley maintain a comprehensive, Austria 00800 2255 4835 constantly expanding collection of application notes, Balkans, Israel, South Africa, and other ISE Countries +41 52 675 3777 technical briefs, and other resources to help engineers Belgium 00800 2255 4835 working on the cutting edge of technology.