Keithley 2281S Quick Start Manual - Connect The Instrument

Manual is about: Precision DC Supply and Battery Simulator

Summary of 2281S

  • Page 1

    2281s precision dc supply and battery simulator quick start guide.

  • Page 2: Safety Precautions

    Safety precautions observe the following safety precautions before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. This product is inten...

  • Page 3

    Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance-limited sources. Never connect switching cards directly to ac mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card....

  • Page 4

    To maintain protection from electric shock and fire, replacement components in mains circuits — including the power transformer, test leads, and input jacks — must be purchased from keithley instruments. Standard fuses with applicable national safety approvals may be used if the rating and type are ...

  • Page 5: Introduction

    Introduction thank you for choosing a keithley instruments product. The model 2281s precision dc supply and battery simulator is a highly sensitive, accurate, programmable power supply that sources stable low-noise voltage, and monitors load currents over a wide dynamic range from amperes to nanoamp...

  • Page 6

    Unpack and inspect the instrument 1. Inspect the box for damage. 2. Open the top of the box. 3. Remove the bag that contains the documentation, standard accessories, cd-rom, and cable housing. 4. Remove the packaging insert. 5. Remove the 2281s from the box. Do not lift the 2281s from the front beze...

  • Page 7

    You should have received the 2281s with the following accessories, shown in the photograph: 1 power line cord 2 kickstart quick start guide 3 2281s quick start guide (this document) 4 2281s precision dc supply & battery simulator product information cd-rom 5 model ca-180-3a cat5 crossover cable for ...

  • Page 8: Connect The Instrument

    Connect the instrument important test system safety information this product is sold as a stand-alone instrument that may become part of a system that could contain hazardous voltages and energy sources. It is the responsibility of the test system designer, integrator, installer, maintenance personn...

  • Page 9: Install The Instrument

     provide training to all users of the system so they understand all potential hazards and know how to protect themselves from injury.  in many systems, during power up, the outputs may be in an unknown state until they are properly initialized. Make sure the design can tolerate this situation with...

  • 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 ea...

  • Page 11: Connections For Testing

    Connections for testing before making the connections, prepare the wires as described in the following table. Usage specifications front panel binding posts awg 20 to awg 12 rear panel output terminals awg 20 to awg 12 the wire must be heavy enough not to overheat while carrying the short-circuit ou...

  • Page 12

    Two-wire (local sensing) dut connection to front panel two-wire (local sensing) dut connection to rear panel.

  • Page 13

    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. Four-wire remote sense connection using four-wire remote sensing connections ensures that the programme...

  • 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

    Overview of the front-panel options the front panel of the 2281s allows you to set up most instrument functions and features and perform sourcing and measuring operations. The front panel includes:  a high-resolution color display that allows you to access instrument settings and measurement readin...

  • Page 16: Home Screen Overview

    Startup screen when you turn on the 2281s, you will see the following startup screen. As you can see from the figure, 2281s has three functions:  high-precision power supply: supplies 20 v, 6 a dc power  battery test: conducts battery charging and discharging test to calculate the capacity and res...

  • 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. The outpu...

  • Page 18

    Home screen for battery test: the above figure is the home screen 1 for the battery test function. You can enter this screen by choosing the battery test function in the startup screen. You can also visit other home screens by pressing next. The top row on the home screen displays the status and eve...

  • Page 19

    Home screen for battery simulator: the above figure is the home screen 1 for the battery simulation function. You can enter this screen 1 by choosing the battery simulation function in the startup screen. You can also visit other home screens by pressing next. The top row on the home screen displays...

  • Page 20: Menu Screen Overview

    Menu screen overview in any function, when you press the menu key on the front panel, the menu screen is displayed. The following section uses the menu for power supply as an example. From this screen, you can select source, measure, graph, trigger, and system setup menus. These menus allow you to c...

  • Page 21: Measurement

    Simple voltage output and current measurement the following example demonstrates how to configure a voltage output and perform a precision voltage and current measurement using the default instrument configuration in the power supply function. Connect the dut (for this example, a 1 k resistor) to th...

  • Page 22: Select A Measure Function

    Select a measure function the 2281s allows you to perform the following measure functions in the power supply function. Measure functions what the instrument measures concurrent (v + i) measure v oltage and current at the same time voltage (v) only measure voltage current (i) only measure current 1....

  • Page 23: Application Examples

    1. Press the menu key. 2. Highlight the settings icon under measure using either the navigation control or the softkeys. Press enter. 3. On the measure settings page, select the button next to range. The range dialog box is displayed. 4. Select the range. You are returned to the measure settings scr...

  • Page 24

    The battery under test and the model 2281s-20-6 can be connected by two-wire sense connections. However, four-wire sense connections, as shown in the following figure, is recommended because it cancels out the wire resistance. After connecting the battery to the instrument, to test a battery and gen...

  • Page 25

    4. Set the target voltage next to v-set. For example, for a li-ion battery that works in the range of 3.8 v to 4.2 v, you need to set the target voltage slightly lower than 3.8 v to make sure the battery will be discharged fully. 5. Set the end current next to end condition as 10 ma. When the discha...

  • Page 26

    Battery simulation test 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. Equipment required:  o...

  • Page 27: Next Steps

    1. Select the battery simulator function in the startup screen. 2. Select model in the soft key area 1. 3. Choose 10.Mdl, since it is the model of a cellphone li-ion battery normally seen in the market with a voltage range of 3.7 v to 4.2 v. 4. Press the menu key. 5. Under battery, select settings. ...

  • Page 28

    Copyright © 2016, tektronix. All rights reserved. Tektronix products are covered by u.S. And foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specification and price change privileges reserved. Tektronix and tek are registered...