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XITRON 2000I User Manual

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USER GUIDE
2000I & 2000M
DC Power Source
Instruments

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Summary of Contents for XITRON 2000I

  • Page 1 USER GUIDE 2000I & 2000M DC Power Source Instruments...

  • Page 3: Warranty

    This warranty does not apply to any products repaired or altered by persons not authorized by Xitron Technologies or not in accordance with instructions provided by Xitron Technologies. If the instrument is defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs will be billed at cost.
  • Page 4 All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form with prior written consent from Xitron Technologies. This product’s user guide is copyrighted and contains proprietary information, which is subject to change without notice.

  • Page 5: Table Of Contents

    Contents Contents Warranty____________________________________________ 3 Introduction ________________________________________ 11 Product Description ____________________________________ 11 Features _____________________________________________ 12 Front Panel Controls and Connections____________________ 13 Display ______________________________________________ 13 “POWER” Switch _____________________________________ 13 Battery Indicators ______________________________________ 14 Red “BATT CHG” Light __________________________________ 14 Green “OK” Light________________________________________ 14 “OUTPUT”...
  • Page 6 2000I & 2000M User Guide, Rev B Charging the Battery _________________________________ 21 The Internal Battery ____________________________________ 21 To Charge the Battery_____________________________________ 21 Charging Status__________________________________________ 22 Charging from the Charging Module _______________________ 22 Charging Modules________________________________________ 23 Charging from an External DC Voltage Supply ______________ 24...
  • Page 7 Contents Applications ________________________________________ 49 Low-level DC Power ___________________________________ 49 Ensuring Stable Voltage Connections ________________________ 49 Ensuring Stable Current Connections_________________________ 51 Process Control Industry Applications______________________ 53 Calibrating in Process Control Environments __________________ 53 Simulating Thermocouple Systems __________________________ 56 Measuring Thermocouple Outputs ___________________________ 57 Engineering Laboratory Environment Applications______________ 58 Calibration and Maintenance ___________________________ 61 Internal Calibration ____________________________________ 61...
  • Page 8 2000I & 2000M User Guide, Rev B Command String Usage _________________________________ 84 Setting an Output Voltage or Current_________________________ 84 Adjusting Output Level ___________________________________ 85 Reading Present Output Level ______________________________ 85 Internal Calibration ____________________________________ 86 External Calibration ____________________________________ 86 Appendix A– Output Specifications _____________________ 87...
  • Page 9 Tables Tables Table 1: Resistance Values for Transfer ______________________ 59 Table 2: Voltage Accuracy Margins _________________________ 63 Table 3: Current Accuracy Margins__________________________ 64 Table 4: Command Characters______________________________ 82 Table 5: Shortcuts to Command Character Sequences ___________ 82 Table 6: Extended Command Set ___________________________ 83 Table 7: DC Voltage Output _______________________________ 87 Table 8: DC Current Output _______________________________ 88 Table 9.
  • Page 10 2000I & 2000M User Guide, Rev B...

  • Page 11: Introduction

    Introduction Introduction This chapter describes the 2000I and 2000M DC power source instruments and highlights their features and functionalities. The 2000 instruments were introduced in 1989 to support the fields of Process Control, Calibration, and General Equipment Testing. Product Description The 2000I and 2000M products are portable, lightweight DC power source instruments.

  • Page 12: Features

    2000I & 2000M User Guide, Rev B Automatic internal calibration and simple front panel (covers on) external calibration maintain high accuracy. A comprehensive range of computational abilities enable a variety of applications. Note: To ensure full use of this instrument, review this complete user guide at setup.

  • Page 13: Front Panel Controls And Connections

    Front Panel Controls and Connections This chapter discusses the basic use of the various controls, connectors and indicators on the front panel of the 2000I and 2000M DC power source instruments. Before using your instrument refer to the text on Charging the Battery.

  • Page 14: Battery Indicators

    2000I & 2000M User Guide, Rev B charging control circuitry in the instrument, thus the POWER switch does not control the charging of the battery. When the POWER switch is toggled up, in the ON position, the microprocessor and analog circuitry is powered and the instrument may be operated normally.

  • Page 15: Key

    Front Panel Controls and Connections output level, these keys initiate a numeric entry of a new output level, this entry will be completed by pressing the required units key. +/– Key (+/–) The change sign key may be used during a numeric entry to change the polarity of the entered data.

  • Page 16: Units/Enter Keys

    2000I & 2000M User Guide, Rev B • If the multiplier key is the same as the display, it toggles the usage of the selected multiplier in the display format. Units/Enter Keys The V, ºC and ºF keys are encircled within a white line on the keypad.

  • Page 17: Rear Panel Connections And Controls

    Rear Panel Connections and Controls This chapter discusses the basic use of the various controls and connectors located on the rear panel of the 2000I and 2000M power source instruments. complete discussion of the methods used to perform specific tasks For a refer to Front Panel Operation.

  • Page 18: Interface Connectors

    2000I & 2000M User Guide, Rev B During calibration of thermocouple measuring instruments, be sure to use thermocouple wire between the 2000M instrument and the unit being calibrated Interface Connectors A connector slot is available at the top center in the back panel. A connector in this location is only present when either of the interface options IE-BAT or RS-BAT is fitted in the instrument.

  • Page 19: Rear Panel Switch

    Rear Panel Connections and Controls Rear Panel Switch The rear-panel mounted toggle switch is only present when the IE-BAT option is fitted in the instrument. When ON (up position), the internal interface is enabled for operation and is disabled when OFF (down position). Note that the battery life is considerably shortened when the IE-BAT Interface is enabled, thus it is highly recommended that this switch be maintained in the OFF (down) position whenever this interface is not being...
  • Page 20 2000I & 2000M User Guide, Rev B...

  • Page 21: Charging The Battery

    We recommend the battery be recharged for at least 12 hours prior to its initial use. Use the charging unit provided by Xitron Technologies to charge the internal battery and to operate this instrument. Ensure that the included charging unit is compatible with your local power ratings and socket connection.

  • Page 22: Charging Status

    2000I & 2000M User Guide, Rev B Charging Status For battery charge status, refer to the front panel’s red BATT CHG light. • If the BATT CHG light extinguishes then the battery is fully charged. • If the BATT CHG light does not extinguish after several hours of charging, turn the unit OFF and back ON.

  • Page 23: Charging Modules

    Charging the Battery Charging Modules One of these modules is included with the main unit (as specified at the time of order). Additional charging modules may be obtained using the codes described below. “M02000” This option delivers an additional copy of this user guide. If not included at the time of placing the order for the basic unit, please have the serial number of your unit available when making this order.

  • Page 24: Charging From An External Dc Voltage Supply

    Continuous Power from External Supply Both the charging module or an external DC supply may be left continuously applied without damage to the 2000 instrument. Xitron Technologies recommends using an external DC supply for process control applications. Warning: Unless the charging source is an external battery, continuous operation from an external supply when the instrument is connected to a process control system may degrade the safety of that system.

  • Page 25: Operating The 2000 Instrument

    Operating the 2000 Instrument Operating the 2000 Instrument This chapter discusses operating the 2000I and 2000M DC power source instruments. Throughout this chapter, the instrument is assumed to be a 2000M, which has full capabilities, described in this User Guide. If data is entered for which the option is not fitted, then a message displays for two seconds, and the entry is discarded.

  • Page 26: Connecting To The Output Terminals

    When the POWER switch is placed in the OFF position the terminals remain in the condition prevailing. Xitron Technologies recommends selecting the “Standby” state prior to switching the POWER switch OFF, to afford the highest level of protection both to any circuitry connected to the instrument and to protect the instrument from inadvertent application of external signals.
  • Page 27 Operating the 2000 Instrument The displayed output level will be present when the instrument returns to “Operate” status. Displaying Mode Options The menu-selectable modes always display a possible mode selection available at that point, which is an opposite mode or mode change from what is presently active in the instrument.

  • Page 28: Numeric Data Entry

    2000I & 2000M User Guide, Rev B Press any of the Units/Enter keys (V, A, ºC or ºF) to display the output (value) in terms of the displayed mode. The display then returns to displaying the selected output level and mode.

  • Page 29: Direct Entry Of Required Output Level

    Operating the 2000 Instrument • To correct a data entry error: 1. Press the CLR key. This initializes the entry point either to a blank area or the previous data. 2. Enter or reenter the entire numeric. If the CLR key is pressed at this time, then the numeric entry is aborted, the display returns to the previous display.

  • Page 30: Changing Displayed Multiplier

    2000I & 2000M User Guide, Rev B • -10mV To set the output to: 1 0 +/- m V 1. Press the following keys: 2. The display then shows the requested output level: -10.00000mV • 20.0035mA To set the output to: 2 0 .

  • Page 31: Direct Entry Of Temperature Data

    Operating the 2000 Instrument • To deselect the multiplier: +10.00000mV 1. For example:if the display is: +.0100000 V 2. Press the key to change the display to: • To use the selected multiplier: +10.00uV 1. For example: if the display is: +0.01000mV 2.

  • Page 32: Adjusting Output Level Or Simulated Temperature

    2000I & 2000M User Guide, Rev B +1.000000 V 1. If the displayed output level is -1.000000 V 2. Press the +/- key to change the output level to: —And— +100.00ºC R 1. If the displayed simulated temperature is: -100.00ºC R 2.
  • Page 33 Operating the 2000 Instrument • The multiplier is automatically selected to provide the required resolution in the display. The previously described ability to control the multiplier used in the display format is inactive. • The thermocouple type data is no longer provided in the display. •...

  • Page 34: Increasing Or Decreasing Output Level

    2000I & 2000M User Guide, Rev B +/– 99.99º C º F The maximum deviation possible is: . Any attempt to deviate a temperature beyond this limit will be ignored: +1000.00+10.00º C Increasing or Decreasing Output Level After the “Adjust” mode has been initiated, the output level or simulated...

  • Page 35: Selecting Default Power On Condition

    Operating the 2000 Instrument Selecting Default Power on Condition The 2000 instruments allow you to define the state and output level at which the instrument will commence operation following application of power. The sequence required to select the desired output level and status are described below.

  • Page 36: Range Locking

    2000I & 2000M User Guide, Rev B Performing Internal and External Calibrations Calibration is initiated via the MNU key. Refer to the Maintenance and Calibration chapter. Range Locking The F.02 firmware provides “Range Lock” mode for the 20VDC and 2VDC, as well as for the 20mA DC current range.

  • Page 37: Calculating Output Mode Of Operation

    Operating the 2000 Instrument Calculating Output Mode of Operation The 2000I and 2000M DC power source instruments have the capacity to compute the actual output level from an equation entered in the specific data units of the instrument being calibrated. For example, a process controller’s 4 –...
  • Page 38 2000I & 2000M User Guide, Rev B 7. The display then prompts you to select the required user entry units. You may sequentially select (for each character position) the desired character 5 and 6 keys. Note that both upper- and lower-case by using the characters are available and up to three characters may be specified.

  • Page 39: Selecting Measurement Mode

    Operating the 2000 Instrument 2. While a multiplier key may be used during the entry, this does not affect the display format (it is used to scale the entered data however). 3. The “Adjust” mode may be used while in “Calculated Output” mode; however, the display format is such that the user units are not displayed during the adjustment process.

  • Page 40: Deselecting Measurement Mode

    2000I & 2000M User Guide, Rev B The instrument will then begin measuring the applied voltage, converting it into the computed temperature for the selected thermocouple type. • To display the measured voltage: Press the V key. • To show the computed temperature in the respective units.
  • Page 41 Operating the 2000 Instrument non-volatile, thus may be selected prior to use, even if the instrument is to be powered down. This option is available in the 2000M only. Thermocouple Simulation and Measurement Set-Up The 2000M instrument’s thermocouple simulation capability is achieved by setting the desired simulation parameters and then commanding the required temperature outputs.
  • Page 42 2000I & 2000M User Guide, Rev B • To achieve Thermocouple Simulation: Press the MNU key, the display will prompt you to select either the “Standby” or “Operate” state. Press any arrow key repeatedly until either one of the following appears: <...

  • Page 43: Deselecting Thermocouple Simulation Mode

    Operating the 2000 Instrument If “Active CJC” has been selected, then the unit will return to normal operation, displaying the present output level and status. If the instrument is presently performing a thermocouple simulation, then this data will be used immediately, or it will be used when the temperature to be simulated is entered.
  • Page 44 2000I & 2000M User Guide, Rev B...

  • Page 45: Using The Memory Options

    Using the Memory Options Using the Memory Options The option called MEM is a 10-step memory, which allows you to program up to 10 output levels. These levels may be recalled speedily from either the front panel or by the rear panel mounted contact closure input. The ten memory steps are automatically stored in electronic nonvolatile memory.

  • Page 46: Front Panel Memory

    2000I & 2000M User Guide, Rev B Front Panel Memory The front panel memory steps may be either edited or recalled by initially pressing the MNU key. Editing Memory Steps 1. Press the MNU key twice. The display now shows the choice: <...

  • Page 47: Rear Panel Memory

    Using the Memory Options 7. You may toggle the displayed status for the memory step by pressing any of the arrow keys or the MNU key. When the desired status displays, select it by pressing any of the Units/Enter keys. The display is then returned to the “Press Memory”...

  • Page 48: General Memory Considerations

    0.101 sub-miniature phono socket. The recommended mating plug is obtainable from Switchcraft® as part number 850. The connector is provided with each instrument as standard and when MEM is ordered. (Xitron Technologies part number C109001001000001). General Memory Considerations Memory of Instument Status The contents of a memory step only affect the selection of the “Operate”...

  • Page 49: Applications

    Applications Applications This chapter describes specialized applications for using the 2000I and 2000M DC power source instruments. And some ways to ensure the quality of the power source. The front panel terminals are used to: • Provide stable low-level DC voltage and current;...
  • Page 50 2000I & 2000M User Guide, Rev B levels. These thermal E.M.F. voltages may be caused by temperature differentials between the binding posts and the internal ambient in the instrument or by temperature differentials between the connection leads and the binding posts.

  • Page 51: Ensuring Stable Current Connections

    Applications • In most circumstances, the use of a tightly twisted pair of 28AWG wires is recommended, as this both reduces the effects of thermal E.M.F. voltages and achieves the close coupling required to reject interference. • Route all line wiring and any digital wiring as distant as possible from the analog instrument connections (particularly computer interface and networking cables).
  • Page 52 2000I & 2000M User Guide, Rev B • When dealing with low-level DC currents at high compliances, the effects of leakage currents become dominant. To limit leakage use the correct insulation throughout the cabling, and keep all connectors and front panels free of grease and dirt.

  • Page 53: Process Control Industry Applications

    Low-Level Application Summary • To reduce thermal E.M.F. voltage interference to acceptable levels: ü Use twisted pairs of 26 AWG (or smaller) wire. ü Use the Xitron Technologies option SP48 shielded lead set. • To reduce current interference to acceptable levels: ü...
  • Page 54 2000I & 2000M User Guide, Rev B Note: The 2000I and 2000M instruments do not have intrinsic safety certification for process control systems. Using the Adjust Mode to Check Calibration For this application the “Adjust” mode of operation is used to measure the error of the equipment being tested.
  • Page 55 Applications ü is the combined input impedance of the instrument being adjusted. • The increase in the limits of error due to applying this correction Error = ( ( 1000 + EZ ) * Z ) / Z ü Where is the tolerance of the input impedance (in ppm, 1% = 10000ppm).

  • Page 56: Simulating Thermocouple Systems

    2000I & 2000M User Guide, Rev B The 2000 instruments can be operated in parallel with a sending unit of a transducer having the above characteristics. Use the instrument to modify the transducer indication by entering the data entry as given above, except with the 4mA offsets removed.

  • Page 57: Measuring Thermocouple Outputs

    Applications achieve thermocouple simulation, accuracies approach 0.1ºC. When using external ice-point reference junction to achieve thermocouple simulation, accuracies approach 0.02ºC The 2000M instrument simulates the thermocouple system by computing the hot and reference junction-E.M.F. voltages from the N.I.S.T. tables with linear interpolation.

  • Page 58: Engineering Laboratory Environment Applications

    22mV. Refer to Table 1. The short-term stability for current output enables the use of the 2000 instruments for resistance transfers. In this application the 2000I or 2000M instrument is set to a suitable current for the resistance to transfer—a 10V drop across the resistor.

  • Page 59: Table 1: Resistance Values For Transfer

    Applications Ω, thus this The 2000 instruments have an output impedance greater than 10 affect is not of importance for unknown values below 1mΩ. The following table gives the uncertainty of the transfer for various values of standard and unknown resistors. See Note following table. Table 1: Resistance Values for Transfer Uncertainty With Basic...
  • Page 60 2000I & 2000M User Guide, Rev B Other Laboratory Applications: Variable voltage or current reference source: The 2000 instruments may be used as voltage and current reference sources in most instrumentation circuits, enabling the measurement of reference sensitivity and related effects. The low noise of battery power injects little noise into the circuitry.

  • Page 61: Calibration And Maintenance

    Calibration and Maintenance Calibration and Maintenance This chapter describes the procedures for internal calibration, external calibration, periodic maintenance and internal maintenace of the 2000I and 2000M DC power source instruments. Internal Calibration The internal calibration procedure ensures the 2000 instrument’s low-level DC voltage and current specifications are maintained.

  • Page 62: External Calibration

    2000I & 2000M User Guide, Rev B The instrument then performs the internal tests and calibrations automatically. During these tests and calibrations the display shows the progress, generating warning messages if any out of tolerance or malfunctioning circuitry is detected. After completing an internal cal test, the instrument returns to the output level that was present when the sequence was initiated.

  • Page 63: Table 2: Voltage Accuracy Margins

    The 2000 instruments require current measuring equipment with the accuracy requirements shown in Table 3, for a margin of 2:1 or better. Xitron Technologies recommends using a high-accuracy digital DC ammeter, such as, the Hewlett-Packard 3458A, or a DC voltage measuring device and laboratory standard resistors to achieve the current measurement accuracies.

  • Page 64: Initiating External Calibration

    2000I & 2000M User Guide, Rev B Table 3: Current Accuracy Margins Accuracy Accuracy Input For 90-Day For 1-Year Level Specification Specification 10mA 210nA 315nA 15.5nA 26nA 2.1nA 3.2nA 100µA 275pA 400pA 10µA 25pA 50pA Important Note: The combination of the resistance and DC voltage measurement uncertainty should not exceed the figures shown in Table 2.
  • Page 65 Calibration and Maintenance 3. Press any of the Units/Enter keys (V, A, ºC or ºF) to make the selection. If the instrument has been programmed to require a password for this procedure, you will be prompted with the following display: <...

  • Page 66: Performing External Calibration

    2000I & 2000M User Guide, Rev B • To enter a password at this time, press the digits for the new password (up to 10 digits). Press the CLR key to abort, as required. Press any of the Units/Enter keys to place the password in non-volatile storage.
  • Page 67 Calibration and Maintenance Attach the 2000I or 2000M instrument to a recently zeroed nullmeter. 2000 Nullmeter Measure the actual output level of the 2000 instrument using the nullmeter. Adjust the instrument, using the arrow keys, until the output µ µ V µ...
  • Page 68 2000I & 2000M User Guide, Rev B 10. Calibrate to an output level of +100.000mV . Adjust the output level to µ µ V within 0.7 of 100mV as described in step 2. Nullmeter 2000 10V DC Source 100:1 Divider This output level may be measured directly by using: ü...
  • Page 69 Calibration and Maintenance ü The preferred method of using a nullmeter to monitor the deviation between this instrument’s output level and the output of a high precision 10:1 attenuator whose input is obtained from a precision calibrated 10V source. 12. Calibrate to an output level of +10.00000V . Adjust the output level of µ...
  • Page 70 2000I & 2000M User Guide, Rev B µ µ A Calibrate to an output level of 1.0000 . Adjust the output level of the 2000 instrument as described in step 2 until the voltage measured is: 100mV +/– 7.5 µ µ V , i.e., a current of 1 µ µ A +/– 75pA .
  • Page 71 Calibration and Maintenance This output level may be measured directly by using a calibration standard 100kΩ resistor and a high precision DMM to monitor the voltage drop across the standard resistor. µ µ A 19. Calibrate to an output level of +100.0000 .

  • Page 72: Periodic Maintenance

    Internal Maintenance In general, the 2000I and 2000M DC power source instruments do not require internal maintenance. In the event of a failure, a calibration fault, or when the internal battery requires replacement, however, the instrument may require opening.
  • Page 73 Calibration and Maintenance Caution: The 2000 instruments contain delicate precision circuitry, ensure static control procedures are followed while internal maintenance is in progress. Warning: Prior to removing the outside covers of the 2000 instruments, ensure that the external charging unit or power supply is disconnected and check that the front panel’s POWER switch is OFF.

  • Page 74: Replacing The Internal Battery

    2000I & 2000M User Guide, Rev B 7. Locate and remove the four cross-head screws that hold the Power Supply board to the standoffs mounted on the chassis bottom. Maintain cable connections to this board, as board can be adjusted while connected.
  • Page 75 Calibration and Maintenance present prior to disassembly. Ensure the nylon washers are included when reattaching the Analog board. Warning: The printed circuit boards are continuously powered by the battery, use extreme care in handling them. Reconnect the battery cables after reattachment of the boards.
  • Page 76 2000I & 2000M User Guide, Rev B...

  • Page 77: Interface Operation

    Interface Operation Interface Operation This chapter discusses the methods used to interface the 2000I and 2000M DC power source instruments using the optional interface connectors RS- BAT and IE-BAT. In general, operation of these instruments via an interface involves the writing and reading of ASCII data to or from the instrument.

  • Page 78: Selecting Rs232

    The IE-BAT option enables the 2000 instruments to be controlled or interrogated by any IE-BAT interfaced computer. This interface is fully isolated from the analog circuitry of the 2000I and 2000M DC power source instruments for voltages of up to 500V.

  • Page 79: Remote/Local Operation

    Interface Operation Remote/Local Operation The IEEE488 interface defines separate “REMOTE” and “LOCAL” states.While in the LOCAL state, which is following the initial application of power, the instrument will only respond to commands from the instrument’s front panel. Placing the instrument in the “REMOTE” state by way of the defined interface command, the instrument will only respond to commands received via the interface or until released into the “LOCAL”...

  • Page 80: Bus Commands

    2000I & 2000M User Guide, Rev B Bus Commands As previously mentioned, the IEEE488 interface can perform many tasks that the RS232 does not, those used by the 2000 instrument are as follows: 1. Remote/Local Selection. This has been previously described.

  • Page 81: Reading Data Via An Interface

    Up to 30 characters may be stored in the receive buffer, which may contain more than one complete command string type, as desired. Command Set for the 2000 Instrument The 2000I or 2000M instrument command sets are split into two groups: • The commands, which correspond exactly to individual front panel key presses—to allow the same procedure to be followed, whether the...

  • Page 82: Table 4: Command Characters

    2000I & 2000M User Guide, Rev B Note: Command types other than those listed in Tables 4, 5 or 6 are always discarded and ignored. Table 4: Command Characters Command Front Characters Front Character Panel Key Received Panel Key Received .

  • Page 83: Firmware Version F.02

    Initiates an external calibration, which is equal to selecting “External Cal”. Firmware Version F.02 The Firmware Version F.02 update to the 2000I and 2000M DC power source instrument models include all the standard capabilities, including “Range Lock” mode, the ITS-90 Thermocouple temperature for the 2000M instrument and an extended command set.

  • Page 84: Command String Usage

    Unlocks the 20mA Range Command String Usage Xitron Technologies assumes the user is conversant with the send and receive data commands when using the actual computer interface and with the language used to control the 2000 instruments. Xitron Technologies also assumes all command strings (those shown enclosed in quotation marks) are followed by the carriage return and linefeed characters.

  • Page 85: Adjusting Output Level

    The 2000 instruments output level and status may be read at any time, when using the IE-BAT interface. You can read via the RS-BAT interface after transmitting the @ character to the 2000I or 2000M instrument and then reading the characters as received from the instrument.

  • Page 86: Internal Calibration

    2000I & 2000M User Guide, Rev B Internal Calibration You may command an automatic internal calibration of internal zero offsets whenever desired. Remotely command an internal calibration via either interface by sending the command string “I”. The progress of the internal...

  • Page 87: Appendix A-Output Specifications

    Appendix A—Output Specifications Appendix A–Output Specifications The DC voltage and current output capabilities of the 2000I and the 2000M instruments are provided here. Additionally, specifications for the 2000M instrument’s of thermocouple measurement and simulation option are included here. DC Voltage Output Specifications The accuracy figures given in Table 7 are valid throughout the temperature range of 18º...

  • Page 88: Dc Current Output Specifications

    Pk-PK Noise 0.01 – 10Hz 1.5 + 0.02 1.2 + 0.1 0.8 + 0.5 0.8 + 5.0 (ppm+ nA) RMS Noise 10Hz – 10kHz 200pA 750pA 50nA DC current output is available in both the 2000I and the 2000M instruments.

  • Page 89: Voltage Measurement Specifications

    Appendix A—Output Specifications Settling Time: -------Less than 2 seconds to within 10ppm of change + 50pA. Drive Capability: ---Greater than 18V compliance ability, stable into active and/or inductive loads. Overload:-------------Output fully protected against open circuits, or applied voltages less than 50V. Output Impedance: -Greater than 1011Ω...

  • Page 90: Table 9. Thermocouple Simulation & Measurement Specifications

    0.01ºC 0.01ºC +100 to +400ºC Note: For tables 10a and 10b, the +3ppm + 1µV absolute accuracy adder for the Xitron Technologies production calibration may be substituted by the accuracy figures of your calibration equipment, changing the absolute accuracies provided.

  • Page 91: Table 10: Cjc Stability-Simulation And Measurement

    Appendix A—Output Specifications Table 10a: CJC Stability — Simulation...
  • Page 92 2000I & 2000M IUser Guide, Rev B Table 10b: CJC Stability — Measurement...

  • Page 93: Appendix B- General Specifications

    Appendix B–General Specifications Appendix B– General Specifications Battery Discharge Time: 8 hours min. after full charge conditions: output unloaded; interface disabled 6 hours min. after full charge conditions: output loaded, interface disabled 5 hours min. after full charge conditions: RS232 interface enabled Battery Charge Time: 12 hours max.

  • Page 94: Warm-Up Time

    “Standby” mode. Computation Both the 2000I and 2000M power source instruments can use a computed output level such as an equation output = S*entry + 0, where S and 0 are user-defined constants. The output may be either voltage or current and you may optionally define displayed units of up to three characters in length using upper- or lower-case characters.
  • Page 95 Password Page The common password for enabling External Calibration is: 10288 Place instrument in a known state, such as, current or voltage before entering the password. Note that this page can be removed, as required, to protect this data from unauthorized users.
  • Page 96 2000I & 2000M Instrument’s User Guide, Revision B...

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