Keysight Technologies BT2152A Operating And Service Manual
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Keysight Technologies BT2152A Operating And Service Manual

Keysight Technologies BT2152A Operating And Service Manual

Keysight bt2152a self-discharge analyzer
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Keysight BT2152A
Self-Discharge Analyzer
Operating and
Service Guide

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  • Page 1 Keysight BT2152A Self-Discharge Analyzer Operating and Service Guide...

  • Page 3: Table Of Contents

    Legal and Safety Information Legal Notices Safety Symbols Safety Notices 1 Quick Reference Welcome What is self-discharge? Advantages of the Keysight BT2152A Self-Discharge Analyzer Contact Keysight Technologies Models and Specifications Models Front and Rear Views Specifications Characteristics Self-Discharge Measurement Criteria...
  • Page 4 System Commands Status Tutorial Status Registers Alarm Channel Groups Alarm Status Group Standard Operation Group Status Byte Register Error and Output Queues Status Diagram Reset (*RST) and Interface Settings SCPI Error Messages Error List Keysight BT2152A Operating and Service Guide...
  • Page 5 Aborting Channel Calibration Wire Resistance Calibration Benefits of Wire Resistance Calibration Wire Resistance Compensation Constraints Wire Resistance Calibration Procedure Calibration Security Reset Electrostatic Discharge (ESD) Precautions Tools Required Cover Removal Password Reset Maintenance Index Keysight BT2152A Operating and Service Guide...

  • Page 6: Legal And Safety Information

    No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Keysight Technologies Inc. as governed by United States and international copyright laws. Manual Part Number...
  • Page 7 Legal and Safety Information Certification Keysight Technologies certifies that this product met its published specifications at time of shipment from the factory. Keysight Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.

  • Page 8: Safety Symbols

    This text indicates that the instrument is an Industrial Scientific and Medical Group 1 Class A product (CISPER 11, Clause 4). ICES/NMB- This text indicates product compliance with the Canadian Interference- Causing Equip- ment Standard (ICES-001). Keysight BT2152A Operating and Service Guide...

  • Page 9: Safety Notices

    Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability of the customer’s failure to comply with the requirements.
  • Page 10 Do not attempt to clean internally. In Case of Damage Instruments that are not functioning correctly, appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel. Keysight BT2152A Operating and Service Guide...

  • Page 11: Quick Reference

    Keysight BT2152A Operating and Service Guide Quick Reference Welcome Models and Specifications Command Quick Reference...

  • Page 12: Welcome

    Note that self-discharge current is very difficult to measure in practice. Usually a defective cell can only be detected after days or weeks of aging. This is where the proprietary technology of the Keysight BT2152A Self-Discharge Analyzer provides a superior method of measuring self-discharge over other traditional methods.

  • Page 13: Models And Specifications

    Characteristics Self-Discharge Measurement Criteria External Temperature Measurement Dimensions and Airflow Models Keysight BT2152A - 32 channel Self-Discharge Analyzer Front and Rear Views 1. Line switch Turns the unit on or off 2. Status Indicators Power: Green LED indicates power is on.

  • Page 14: Specifications

    Optional configurations available in 4- channel increments Current measurement accuracy: 1 ± (0.33% + 1 μA) Voltage measurement accuracy: ± (0.05% + 1 mV) 1 Current measurement accuracy is measured at 1 minute integration. Keysight BT2152A Operating and Service Guide...

  • Page 15: Characteristics

    1 Output voltage stability is measured over 24 hours at 1 minute integration. 2 Specification applies at output terminals. Cabling and interconnect errors may degrade this significantly. 3 Maximum rate-of-change (dT/dt) must be <5°C/hour. Keysight BT2152A Operating and Service Guide...

  • Page 16: Self-Discharge Measurement Criteria

    SENSe:WIRE:RESistance:CONFigure command. is cell’s internal equivalent series resistance. This can be provided by the user if necessary by adding it to the resistance of the total cabling wiring from the Keysight BT2152A to the cell under test, using the SENSe:WIRE:RESistance:CONFigure command.

  • Page 17: Dimensions And Airflow

    1.25 inches (30 mm) or more. Clearance to the instrument support rail could be as small as 10 mm if rack mounted. The instrument should not be installed in a pressured rack or enclosure. Keysight BT2152A Operating and Service Guide...

  • Page 18: Command Quick Reference

    Returns instrument identification *OPC? Returns "1" to the output buffer when all pending operations complete *RST Resets the instrument *STB? Status byte query *TST? Self-test query *WAI Pauses command processing until all pending operations are complete Keysight BT2152A Operating and Service Guide...
  • Page 19 Selects the byte order for binary block transfers INITiate       :TEST             :MATChed <time><units>, <ovp>, <uvp>, <res> Sets parameters for the voltage matched [,<tint>[,<curr>[,<ocp>]]], (@<chanlist>) discharge current measurement             :OCV (@<chanlist>) Initiates an open-circuit voltage test             :PROBecheck (@<chanlist>) Initiates a probe check test Keysight BT2152A Operating and Service Guide...
  • Page 20 Returns the sum of the under-voltage condition bits             :ENABle <value> Sets the alarm enable register.       :OPERation [:EVENt]? Queries the operation event register             :CONDition? Queries the operation condition register             :ENABle <value> Sets the operation enable register Keysight BT2152A Operating and Service Guide...
  • Page 21 Sets the date of the system clock       :ERRor? Reads and clears one error from the error queue       :TIME <hh>, <mm>, <ss> Sets the time of the system clock       :TEMPerature? Returns the external sensor's temperature value Keysight BT2152A Operating and Service Guide...

  • Page 23: Installing The Analyzer

    Keysight BT2152A Operating and Service Guide Installing the Analyzer Before Installation Connect the Power Cord Connect the Interfaces Connect the Cell Cables...

  • Page 24: Before Installation

    Before Installation Inspect the Unit When you receive your Keysight BT2152A Self-Discharge Analyzer, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and nearest Keysight Sales and Support Office immediately. Refer to www.keysight.com/find/assist.

  • Page 25: Review Safety Information

    The unit must be installed in a location that allows sufficient space of at least 6 inches (15 cm) at the front and back of the unit for adequate air circulation. Keysight BT2152A Operating and Service Guide...

  • Page 26: Connect The Power Cord

    100 VAC to 240 VAC. The frequency can be 50 Hz or 60 Hz. The detachable power cord may be used as an emergency disconnecting device. Removing the power cord will disconnect AC input power to the unit. Keysight BT2152A Operating and Service Guide...

  • Page 27: Connect The Interfaces

    If the instrument cannot be found, add the instrument using the instrument’s hostname or IP address. 4. You can now use Interactive IO within the Connection Expert to communicate with your instrument, or program the instrument directly using the applicable SYSTem:COMMunicate:LAN commands. Keysight BT2152A Operating and Service Guide...

  • Page 28: Usb Connections

    Items Supplied for the thermistor cable part number. 1. Insert wires 2. Tighten screws The thermistor provided with the cable is Keysight p/n 0837-4194; Amphenol Advanced Sensors RL1005-5744-103-SA. Refer to SENse:THERmistor:CONFigure for additional information. Keysight BT2152A Operating and Service Guide...

  • Page 29: Connect The Cell Cables

    Connect the RJ45 CAT6+ cables from the instrument to the test fixture. When using shielded cables like Cat 6A or Cat 7, leave the shield floating at the cell end of the cable. The cable shield connects to the instrument chassis at the BT2152A end of the cable. Wire resistance calibration is recommended when all RJ45 cables have been installed in the instrument to allow for more accurate output resistance selections.

  • Page 30: Rj45 Wire Color Codes And Pinout Numbers

    2 Installing the Analyzer When using shielded cables like Cat 6A or Cat 7, leave the shield floating at the cell end of the cable. The cable shield connects to the instrument chassis at the BT2152A end of the cable. Wire resistance calibration is recommended when all RJ45 cables have been installed in the instrument to allow for more accurate output resistance selections.

  • Page 31: 32-Channel Mapping To Rj45 Connectors

    Channels 9 to 12 RJ45 #4 Channels 13 to 16 RJ45 #5 Channels 17 to 20 RJ45 #6 Channels 21 to 24 RJ45 #7 Channels 25 to 28 RJ45 #8 Channels 29 to 32 Keysight BT2152A Operating and Service Guide...

  • Page 33: Operating The Analyzer

    Keysight BT2152A Operating and Service Guide Operating the Analyzer Understanding Front Panel Operation Using the Digital Port Maintaining Cell Stability During Testing...

  • Page 34: Understanding Front Panel Operation

    Ready LED will again turn orange for about one hour. The Test and Error indicators should be off. If the Error LED is red, either a protection event or an error has occurred (see What happens when a protection event or error occurs?). Keysight BT2152A Operating and Service Guide...

  • Page 35: What Happens When A Test Is Initiated

    Clearing the protection event or error can only be done using the test program. There is no front panel control to clear protection events or errors. Once the test program clears the protection event or error, the Error LED turns off. Keysight BT2152A Operating and Service Guide...

  • Page 36: Using The Digital Port

    Each of the seven pins can be configured as general purpose bi-directional digital inputs and outputs. The polarity of the pins can also be configured. Pin 8 is the signal common for the digital I/O pins. Data is programmed according to the following bit assignments: Keysight BT2152A Operating and Service Guide...

  • Page 37: Digital Input

    Pin 8 is the signal common for the digital input pins. The pin status reflects the true condition of the external signal that is applied to the pin. The pin state is not affected by the setting of DIGital:OUTPut:DATA. To configure the pins for digital input only: Keysight BT2152A Operating and Service Guide...

  • Page 38: Fault Output

    To configure the Inhibit Input function: DIG:PIN3:FUNC INH \\ sets the function for pin 3 to Inhibit DIG:PIN3:POL POS \\ sets the polarity for pin 3 to positive OUTP:INH:MODE LIVE \\ sets the inhibit mode to Live Keysight BT2152A Operating and Service Guide...

  • Page 39: Fault/Inhibit System Protection

    ONE unit as explained under Clearing Protection Functions. If the operating mode of the Inhibit input is Latched, turn off the Inhibit input on ALL units individually. To re-enable the chain, re-program the Inhibit input on each unit to Latched mode. Keysight BT2152A Operating and Service Guide...

  • Page 40: Maintaining Cell Stability During Testing

    If the cell is at charge equilibrium, the only influence on the cell’s voltage is due to self-discharge. As the BT2152A holds its voltage constant, the net result is the BT2152A needs to only replenish the self-discharge current to maintain constant voltage.

  • Page 41: Expected Self-Discharge Current And Temperature Dependency

    A cell’s voltage temperature dependency can be expressed as a temperature coefficient of voltage (TCV), and can be quantified in microvolts per degree C (μV/ °C). Since the BT2152A's method to measure a cell’s self-discharge current relies on matching its internal voltage source to the cell’s voltage and then connecting them together, it is easy to see how the self-discharge current measurement is impacted by any change of the cell’s voltage afterward.

  • Page 42: Impact Of Stress And Vibration On Current Measurement

    Static stress can induce a relatively fixed voltage shift while vibrations can create substantial peak-to-peak deviations in the measurement. Take care to: not subject the cell to stress. isolate the cell from any direct vibration that may exist. Keysight BT2152A Operating and Service Guide...

  • Page 43: Programming Reference

    Keysight BT2152A Operating and Service Guide Programming Reference Introduction to the SCPI Language Programming Samples Commands by Subsystem Status Tutorial Reset and Interface Settings SCPI Error Messages...

  • Page 44: Introduction To The Scpi Language

    The command syntax shows most commands (and some parameters) as a mixture of upper- and lower-case letters. The upper-case letters indicate the abbreviated spelling for the command. For shorter program lines, you can send the abbreviated form. For better program readability, you can send the long form. Keysight BT2152A Operating and Service Guide...

  • Page 45: Queries

    Any keyword enclosed in brackets is optional and can be omitted. However, if you are com- bining several commands within the same message string, you must include the optional commands to place the command parser at the correct level in the hierarchy. Keysight BT2152A Operating and Service Guide...

  • Page 46: Parameter Types

    "OFF" or "0". For a true condition, the instrument will accept "ON" or "1". When you query a Boolean setting, the instrument will always return "0" or "1". The following command requires a Boolean parameter: SYSTem:COMMunicate:LAN:DHCP OFF|0|ON|1 Keysight BT2152A Operating and Service Guide...

  • Page 47: Device Clear

    The instrument returns to the trigger idle state. The instrument's input and output buffers are cleared. The instrument is prepared to accept a new command string. The ABORt command is the recommended method to terminate an instrument operation. Keysight BT2152A Operating and Service Guide...

  • Page 48: Programming Samples

    The following initiates a probe check test and returns the status of the channel probes. INIT:TEST:PROB (@1:16) While(SENS:PROB:AVAIlable? == 0) \\ wait for data to become available Sleep(1000); FETC:PROB? (@1:16) \\ return comma-separated boolean values Keysight BT2152A Operating and Service Guide...

  • Page 49: Retrieving All Test Values

    INITiate:TEST command is sent, there may be no data to fetch for quite a while. numCurrPointsPerChannel = 200; numCurrPointsPerChannel = min( numCurrPointsPerChannel , FETC:CURR:LOG:POIN? FETC:CURR:LOG? numCurrPointsPerChannel, (@1:16) numVoltPointsPerChannel = 200; numVoltPointsPerChannel = min( numVoltPointsPerChannel , FETC:VOLT:LOG:POIN? FETC:VOLT:LOG? numVoltPointsPerChannel, (@1:16) Keysight BT2152A Operating and Service Guide...

  • Page 50: Stopping/Aborting A Test

    To read and clear error codes send: SYSTem:ERRor? Each time this command is sent, one error is removed from the error queue. When the query returns a zero, all error have been removed from the queue. Keysight BT2152A Operating and Service Guide...

  • Page 51: Commands By Subsystem

    4 Programming Reference Commands by Subsystem Calibration Common Commands Digital Fetch Format Initiate Output Sense Status System Keysight BT2152A Operating and Service Guide...

  • Page 52: Calibration Commands

    Loads the previous calibration values: CAL:LOAD CALibration:RESult? <value> Used to enter the resulting measurement for calibration. The value entered depends on the calibration step. The command returns a zero (0) if the calibration step was successful. Keysight BT2152A Operating and Service Guide...
  • Page 53 Closes the output relays on all channels Disables the OVP, UVP, OCP, and UCP protections Sets all instrument DACs to 3.5 V. Sets the calibration status bit Parameter Typical Return (none) (none) Start calibration: CAL:STAR Keysight BT2152A Operating and Service Guide...
  • Page 54 Returns the reference calibration constants of the specified step. Values are either in volts or amps, depending on the step. This allows you to query the reference calibration values before doing a new calibration to see how far the references have shifted. Keysight BT2152A Operating and Service Guide...
  • Page 55 An error is returned if the channel voltage exceeds the voltage limit. CALibration:VERification:MEASure:INITiate <time>, <tint> Initiates a measurement with the specified input parameters. The front panel Test light flashes orange when this command is executed. Keysight BT2152A Operating and Service Guide...
  • Page 56 This includes any changed values from the SENSe:WIRE:RESistance:CONFigure command. To use the wire resistances after having performed the wire resistance calibration, a subsequent INITi- ate:TEST:MATChed command must be performed without issuing a factory reset *RST. Keysight BT2152A Operating and Service Guide...
  • Page 57 (none) (none) Resets the wire resistance calibration values to zero: CAL:WIRE:RES:CLE Turning power on and the *RST will also reset all wiring resistance values to zero. Values saved to non-volatile memory are not cleared. Keysight BT2152A Operating and Service Guide...

  • Page 58: Common Commands

    Transfers the calibration values to the instrument channels. This calibration is automatic and can take up to 1 hour. Returns a 0 (zero) when successful, and an error code otherwise. IMPORTANT Remove all connections from the CAL connector on the rear panel of the BT2152A before performing the channel calibration. Parameter Typical Return...
  • Page 59 (none) Reset the instrument: *RST *RST forces the ABORt command. This cancels any measurement actions presently occurring. Allow at least 4 seconds for the *RST to complete. Set the IO timeout to >4 seconds. Keysight BT2152A Operating and Service Guide...
  • Page 60 Pauses additional command processing until all pending operations such as the INIT:TEST commands are complete. See for more information. Parameter Typical Return (none) (none) Wait until all pending operations complete. *WAI *WAI can only be aborted by sending the instrument a Device Clear command. Keysight BT2152A Operating and Service Guide...

  • Page 61: Digital Commands

    Sets the pin function. The functions are saved in non-volatile memory. Digital input/output mode DINPut Digital input-only mode. FAULt Pin 1 functions as an isolated fault output. Pin 2 is common for pin 1 INHibit Pin 3 functions as an inhibit input. Keysight BT2152A Operating and Service Guide...
  • Page 62 For trigger inputs and outputs, NEGative means a falling edge. The pin polarities are saved in non-volatile memory. Parameter Typical Return POSitive|NEGative POS or NEG Sets pin 1 to POSitive polarity: DIG:PIN1:POL POS Keysight BT2152A Operating and Service Guide...

  • Page 63: Fetch Commands

    Returns 10 voltage readings per channel: FETC:VOLT:LOG? 10, (@1:32) The readings are returned sequentially in channel groups (i.e. x,x,x,x,x,x,x,x, y,y,y,y,y,y,y,y, ….) Where x represents all measurements for channel 1, y represents all measurements for channel 2 etc. Keysight BT2152A Operating and Service Guide...
  • Page 64 The instrument clears all measurements from reading memory whenever INIT is executed. If INITiate:TEST:MATChed has been configured for a different channel group than the channel group specified in this command, non-active channels will return +9.91000000e37 (not a number). Keysight BT2152A Operating and Service Guide...
  • Page 65 8192 is the maximum number of ASCii values that can be returned in any one call. The instrument clears all measurements from reading memory whenever INIT is executed. Keysight BT2152A Operating and Service Guide...
  • Page 66 Returns the number of temperature readings available: FETC:TEMP:LOG:POIN? If you attempt to return more readings than are available, an error will be generated. You must include any offset values in the total number of readings available. Keysight BT2152A Operating and Service Guide...
  • Page 67 Returns the OCV values at the start of the test: FETC:VOLT:OCV? (@1:32) If INITiate:TEST:MATChed has been configured for a different channel group than the channel group specified in this command, non-active channels will return +9.91000000e37 (not a number). Keysight BT2152A Operating and Service Guide...

  • Page 68: Format Command

    The byte order setting is stored in non-volatile memory and does not change when power has been off. The default value is restored after a reset (*RST). The most common setting for this command is SWAPped. Keysight BT2152A Operating and Service Guide...

  • Page 69: Initiate Commands

    To calculate the maximum test time in hours use Hours=(<tint> * 72) Time interval Maximum test time 1 second (default) 3 days 10 seconds 30 days 60 seconds 180 days 250 seconds 750 days Keysight BT2152A Operating and Service Guide...
  • Page 70 Send SENSe:PROBecheck:AVAIlable? to check whether a probe check test has completed. Parameter Typical Return (none) (none) Initiate a probe check test on 16 channels: INIT:TEST:PROB (@1:16) Keysight BT2152A Operating and Service Guide...

  • Page 71: Lxi Command

    Turns the front panel LXI identify indicator on or off. When turned on, the "LAN" status indicator on the front panel blinks on and off to identify the instrument that is being addressed. Parameter Typical Return 0|OFF|1|ON 0 or 1 To blink the front panel LXI indicator: LXI:IDENT ON Keysight BT2152A Operating and Service Guide...

  • Page 72: Output Commands

    Sets the Inhibit Input to Live mode: OUTP:INH:MODE LIVE OUTPut:PROTection:CLEar Resets any protection events that have occurred. The protection settings are specified in the INIT:TEST commands. Parameter Typical Return (none) (none) Clear instrument protection: OUTP:PROT:CLE Keysight BT2152A Operating and Service Guide...

  • Page 73: Sense Commands

    <temp> the nominal temperature of the thermistor in degrees C, from -272.15° C to 273.15° C 25° C <resistance> the nominal resistance in ohms, from 1 Ω to 1,000,000 Ω 10,000 <beta> value from 1 to 1,000,000 4073 Specifies the nominal temperature and resistance: SENS:THER:CONF 25, 10000, 4073 Keysight BT2152A Operating and Service Guide...
  • Page 74 Specifies a wire resistance of 0.188 Ω for channel 1: SENS:WIRE:RES:CONF 0.188, (@1) Wire resistance calibration is required when all RJ45 connectors have been installed in the instrument. Wire resistance calibration is also required whenever any RJ45 connector is unplugged, reinserted, or reseated. Keysight BT2152A Operating and Service Guide...

  • Page 75: Status Commands

    Status Byte. An enable register defines which bits in the event register will be reported to the Status Byte register group. You can write to or read from an enable register. Keysight BT2152A Operating and Service Guide...
  • Page 76 Returns the sum of the bits feeding the under-voltage (UVP) condition bit in the Status Alarm Register group. This is a 32-bit unsigned value, where each bit represents one channel. Channel 1 is represented by bit 0; channel 32 by bit 31. Keysight BT2152A Operating and Service Guide...
  • Page 77 Once a bit is set, it remains set until cleared by reading the event register or by sending *CLS (clear status). The value returned is the binary-weighted sum of all bits set in the register. Keysight BT2152A Operating and Service Guide...
  • Page 78 +16 (bit 4 set) weighted sum of the bits in the register. Enable bit 4 in the enable register: STAT:OPER:ENAB 16 event register *CLS does not clear the enable register, but does clear the Keysight BT2152A Operating and Service Guide...

  • Page 79: System Commands

    IP address, Subnet Mask, and Default Gateway to the instrument. OFF or DHCP unavailable - the instrument uses the static IP address, Subnet Mask, and Default Gateway during power-on. Parameter Typical Return 0|OFF|1|ON, Default: ON 0 or 1 Disable DHCP: SYST:COMM:LAN:DHCP OFF Keysight BT2152A Operating and Service Guide...
  • Page 80 If Dynamic Domain Name System (DNS) is available on your network and your instrument uses DHCP, the domain name is assigned by the Dynamic DNS service at power-on. A null string ("") indicates that no domain name is assigned. Keysight BT2152A Operating and Service Guide...
  • Page 81 String of up to 15 characters. Must start with letter (A-Z) May contain (none) letters, numbers (0-9), or dashes ("-"). Query: [CURRent|STATic]. Default: CURRent "Keysight BT2152A" To define a hostname: SYST:COMM:LAN:HOST "Keysight BT2152A " Keysight BT2152A Operating and Service Guide...
  • Page 82 Hardware Address. This is an unchangeable 48-bit address assigned by the manufacturer to each unique Internet device. Your LAN administrator may need the MAC address to assign a static IP address for this device. Keysight BT2152A Operating and Service Guide...
  • Page 83 Quoted string of up to 15 characters. Default: "BT2152A" "BT2152A". To set a command prompt: SYST:COMM:LAN:TELN:PROM "BT2152A" The instrument uses LAN port 5024 for SCPI Telnet sessions and port 5025 for SCPI Socket sessions. Telnet sessions are typically started from a host computer shell (telnet <IP_address> <port>).
  • Page 84 If DHCP is available and enabled, DHCP will auto- assign these server addresses. These auto-assigned server addresses take precedence over the static addresses assigned with this command. Contact your LAN administrator for details. Keysight BT2152A Operating and Service Guide...
  • Page 85 The real-time clock does not adjust itself for time zone changes or daylight savings time. SYSTem:ERRor? Reads and clears one error from the error queue. Parameter Typical Return (none) +0,"No error" Reads and clears the first error in error queue: SYST:ERR? Keysight BT2152A Operating and Service Guide...
  • Page 86 TEMP input in °C (see Rear View). Parameter Typical Return EXTernal +2.41923802E+001 Return the temperature of the external thermistor: SYST:TEMP? EXT FETCh:TEMPerature:LATest? Same as If nothing is connected to the external temperature connector, the command will return 9.91E37. Keysight BT2152A Operating and Service Guide...

  • Page 87: Status Tutorial

    When true, the affected channel is shut down. The channel bits are logically-ORed into bits 0, 1, and 9 of the Alarm Status Group. The following table describes the bit assignments. Keysight BT2152A Operating and Service Guide...

  • Page 88: Alarm Status Group

    It is a read-only register that is cleared when read. The Standard Operation enable register functions similarly to the enable registers of the Alarm Status group. Refer to Status Registers for a description of each register. The following table describes the bit assignments. Keysight BT2152A Operating and Service Guide...

  • Page 89: Status Byte Register

    One or more bits are set in the Status Byte Register and may generate a Service Summary Request. Bits must be enabled, see *SRE. Operation Status One or more bits are set in the Operation Status Register. Bits must be enabled, see Summary STATus:OPERation:ENABle. Keysight BT2152A Operating and Service Guide...

  • Page 90: Error And Output Queues

    Request Enable register. MSS is set whenever the instrument has one or more reasons for requesting service. *STB? reads the MSS in bit position 6 of the response but does not clear any of the bits in the Status Byte register. Keysight BT2152A Operating and Service Guide...

  • Page 91: Status Diagram

    4 Programming Reference Status Diagram Keysight BT2152A Operating and Service Guide...

  • Page 92: Reset (*Rst) And Interface Settings

    All enabled Telnet prompt: "BT2152A> " IP addresses of Windows Internet 0.0.0.0 Name System Power must cycled for interface enable or LAN service changes to take effect. LAN settings changes require a LAN restart. Keysight BT2152A Operating and Service Guide...

  • Page 93: Scpi Error Messages

    One or more of the internal power rails have failed 208, "Power supply fault"; One or more of the internal power supplies have failed 210, "diagnostic error"; An internal diagnostic error has occurred in the instrument Keysight BT2152A Operating and Service Guide...
  • Page 94 The internal 10 mA reference has failed during self-test. 613, "Self Test Failure: 100 mA Reference failed"; The internal 100 mA reference has failed during self-test. 680, "Incorrect cal password"; An incorrect calibration password has been entered 700, "Unknown calibration error occurred"; Keysight BT2152A Operating and Service Guide...
  • Page 95 The measured data is out of range; the returned value is clipped to the lower limit. -222, "Parameter 1 out of range"; The command could not be executed because the 1st parameter is out of range. Keysight BT2152A Operating and Service Guide...
  • Page 96 The command could not be executed because the USB file system scan failed -350, "Error queue overflow"; The error queue is full. No additional errors can be stored until errors are removed from the queue. Keysight BT2152A Operating and Service Guide...

  • Page 97: Verification And Calibration

    Keysight BT2152A Operating and Service Guide Verification and Calibration Verification Procedure Reference Calibration Channel Calibration Wire Resistance Calibration Calibration Security Reset Maintenance...

  • Page 98: Verification Procedure

    A 442-ohm ¼ watt through-hole resistor, Keysight P/N 0698-4591 or equivalent The ambient temperature is stable and between 23 °C ±2 °C. Relative humidity is <80% The BT2152A must be warmed up for at least 1 hour prior to verification tests External DMM Connections and Setup The verification setup shown for channel 1 on a single RJ45 connector.

  • Page 99: Zero-Scale Current Accuracy Verification

    Building a multi-channel breakout board assembly can simplify verification, especially when planning to verify all the channels. This can be constructed by wiring all BT2152A channels in parallel at the breakout board. Only one channel can be tested at a time with this arrangement (see...

  • Page 100: Full-Scale Current Accuracy Verification

    Set the interval the measurement in seconds <tint> = 10 Step 7. While the BT2152A is performing its measurements, take a current reading with the DMM and record this value. Step 8. Wait for the measurement time set in step 6 to complete. Either send...

  • Page 101: Voltage Accuracy Verification

    Set the interval the measurement in seconds <tint> = 10 Step 7. While the BT2152A is performing its measurements, take a voltage reading with the DMM and record this value. Step 8. Wait for the measurement time set in step 6 to complete. Either send...

  • Page 102: Verification Assembly

    1 - Verification fixture (see below) p/n BT2152-65510 8 - Ethernet Cat6A, 26AWG, 8-conductor, 1ft. cables p/n 8121-3032 Connect the eight Ethernet cables to the Verification Kit and the back of the BT2152A. Connect the inputs of the 7½-digit DMM, for voltage or current verification (as...

  • Page 103: Reference Calibration

    The following figure illustrates the connections between the CAL connector on the rear panel of the BT2152A and the DMM. Shielded, twisted–pair, interconnect cables of minimum length are recommended between the instrument and the DMM to reduce settling and noise errors.

  • Page 104: Enter Calibration Mode

    5 Verification and Calibration Step 2. Power-on the DMM and allow it to warm-up, as required. Step 3. Plug the connector into the Cal port on the rear of the BT2152A to be calibrated. Enter Calibration Mode The following SCPI command starts the calibration. It aborts any other instrument process that is running and prepares the instrument for reference calibration.

  • Page 105: End Calibration And Store Results

    Step 1. End calibration. This returns the instrument to the *RST/Power-on state and sets the CAL:STEP to 0. Send CAL:END Step 2. Store the calibration results. This step overwrites the previous calibration constants. Send CAL:STOR Step 3. Disconnect the DMM from the instrument. Keysight BT2152A Operating and Service Guide...

  • Page 106: Channel Calibration

    5 Verification and Calibration Channel Calibration IMPORTANT Remove all connections from the CAL connector on the rear panel of the BT2152A before performing the transfer calibration. Channels should be calibrated on a regular interval as determined by the maintenance schedule.

  • Page 107: Wire Resistance Calibration

    Using wire resistance calibration lets you run discharge measurements with better performance when using programmable resistance, because the cable wiring will be taken into account. This only applies if the RJ45 cables on the back of the BT2152A have not been removed or reseated. Otherwise, programmable output resistance cannot be guaranteed.
  • Page 108 Step 2. Disconnect any LI cells that are connected to the RJ45 cables. Step 3. If you are using the BT2152A to make and enter the resistance measurement, short the ends of each wire-pair that would normally be connected to the cell together. Otherwise you must use an external DMM to measure the resistance across the wire ends.

  • Page 109: Calibration Security Reset

    2. Remove the 6 flat-head screws located on the top and the 7 pan-head screws along the sides (see below). Place the screws in a container so that you do not lose them. 3. Remove the instrument cover. Keysight BT2152A Operating and Service Guide...

  • Page 110: Password Reset

    3. Turn the instrument ON, allow it to boot-up, wait 3 minutes, then turn the instrument OFF again. 4. Remove the clip lead from pins A6/B6. 5. Reassemble the cover. 6. Turn the unit on. The security code will now be reset to the default value of 0 (zero). Keysight BT2152A Operating and Service Guide...

  • Page 111: Maintenance

    5 Verification and Calibration Maintenance The following table describes the maintenance tasks for the Keysight BT2152A as well as their recommended frequency. Maintenance Task Recommended Schedule Reference Calibration Run annually (once per year). Channel Calibration Run after Reference calibration. Run monthly, or during any production line downtime (e.g. scheduled maintenance).

  • Page 112: Index

    Keysight 12 Inspect 24 Running a test 48 Introduction 44 clearing protection 50 SCPI Language 44 Device Clear 47 retrieving values 49 Digital Commands 61 stopping 50 Digital Port 36 Keywords 44 Fault 38 Keysight BT2152A Operating and Service Guide...
  • Page 113 44 SCPI Status System 93 Self-Discharge Meas- urement 16 Sense Commands 73 Specifications 14 STATus 75 Status System Diagram 91 Status Tutorial 87 Subsystem commands 51 Syntax Conventions 45 System Commands 79 Verification 98 Keysight BT2152A Operating and Service Guide...

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