Related Manuals for BK Precision 2831E
Summary of Contents for BK Precision 2831E
- Page 1 Model 2831E , 5491B 4 ½ Digit and 50,000 Count Bench Multimeters USER MANUAL GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 2: Notice
Safety Notice Supplement As described in the International Electrotechnical Commission (IEC) Standard IEC 664, digital multimeter measuring circuits (e.g., B&K Models 2831E and 5491B) and the USB terminal are Installation Category II (CATII). The AC input terminal is rated CAT I. - Page 3 Do not attempt any internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present. DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT Do not install substitute parts or perform any unauthorized modifications to this instrument. Return the instrument to B&K Precision for service and repair to ensure that safety features are maintained.
- Page 4 SAFETY SYMBOL This symbol on an instrument indicates that the user should refer to the operating instructions located in the manual. Electrical Shock hazard. Chassis ground symbol. CAT I IEC Measurement Category II. (1000V) Inputs may be connected to mains (up to 300 VAC) under Category II overvoltage conditions.
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Page 5: Table Of Contents
Table of Contents Notice ..............................2 Safety Notice Supplement ........................2 Safety Summary ........................... 2 Chapter 1 General Information ......................8 1.1 Feature Overview ............................8 1.2 Incoming Inspection ............................. 8 Chapter 2 Overview .......................... 9 ... - Page 6 3.9.2 dB Calculation ..........................30 3.9.3 dBm Calculation ........................... 31 Chapter 4 Measurement Options ....................33 4.1 Measurement configuration ........................33 4.1.1 Range ............................. 33 4.1.2 Relative ............................34 4.1.3 Rate ..............................
- Page 7 6.3.9 SYSTem Subsystem ........................64 6.3.10 Common Commands ........................ 64 Chapter 7 Specifications ........................ 65 SERVICE INFORMATION ......................73 LIMITED WARRANTY ........................74 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 8: Chapter 1 General Information
The 2831E 4½ digit and 5491B 50,000 count multimeters provide measurements with high accuracy, great stability and fast measurement rates. The meters provide a maximum measurement rate of 25 readings/sec and a 0.02% and 0.03% DC voltage basic accuracy for model 5491B and 2831E respectively. Both meters have broad ranges that can measure:... -
Page 9: Chapter 2 Overview
Chapter 2 Overview Front Panel Overview The front panel of the multimeter is shown in Figure 2-1. This figure includes some important abbreviated information that should be reviewed before operating the instrument. 2. Math function key 1. Function keys Input terminals Primary Display Secondary... -
Page 10: Annunciators On Screen
Range and Combination function selecting keys Select a 2 display parameter Select a 2 display parameter Select a higher range and disable auto ranging. Select a lower range and disable auto ranging. Toggle between auto ranging and manual ranging. Trig/Hold Key Trig Trigger a measurement from the front panel. -
Page 11: Front Panel Menu Reference
HI/IN/LO Indicates the limit testing results Multimeter is in remote control mode AUTO Auto ranging enabled Max/Min MAX / MIN operation is enabled Hardware or remote control error detected SHIFT Accessing shifted keys Front Panel Menu Reference MATH MENU 1: HI LIMIT → 2: LO LIMIT → 3: PERC REF → 4: dB REF→ 5: dBm REF 1. -
Page 12: Front Panel Menu Overview
Front Panel Menu Overview The menu is organized in a top-down tree structure with three levels (menus, commands and parameters) as shown in Figure 2-3. You can use down ( ) or up ( ) to move menu tree from one level to another. -
Page 13: Rear Panel Summary
Rear Panel Summary The rear panel of the multimeter is shown in Figure 2-4. This section includes important information that should be reviewed before operating the instrument. Figure 2-4 Rear Panel 1. USB Device Port Connection port for USB remote control. 2. -
Page 14: Power Up
Power up 2.6.1 Power Line Connection Follow the procedure below to connect the multimeter to line power and turn on the instrument. Check to make sure that the line voltage is in the correct range of 110 V or 220 V ± 10% (198 V to 242 V) and line frequency is in the range of 60 Hz or 50 Hz ±... -
Page 15: Power-Up Sequence
2 mA-200 mA for 2831E, 5 mA-500 mA for model 5491B range DC/AC current input terminal for DC/AC current measurements Input-High terminal for Volts, ohms, Hz, period, diode and continuity measurements Common terminal 2 A (5 A for model 5491B) and 20 A range current input... -
Page 16: Power-On Defaults
2.6.5 Power-on Defaults 2831E and 5491B have a factory default setting for the power-on setting. Since the basic measurement procedures in this manual assume the factory defaults, reset the instrument to the factory settings when following step-by-step procedures. Table 2-2 lists the factory default settings. -
Page 17: Warm-Up Time
2.6.6 Warm-up time The multimeter is ready for use as soon as the power-up sequence has completed. However, to achieve rated accuracy and stability, allow the instrument to warm up for half an hour. If the instrument has been subjected to extreme temperatures, allow additional time for internal temperatures to stabilize. Display The display of the multimeter is primarily used to display readings, along with the units and type of measurement. -
Page 18: Chapter 3 Basic Measurements
Voltage ranges: 200 mV, 2 V, 20 V, 200 V, 1000 V (750 VAC) (model 5491B: 500 mV, 5 V, 50 V, 500 V, 1000 V (750 VAC)) Maximum resolution: 50 µV for DC and 1 mV for AC (on 200 mV range (model 2831E) and on 500 mV range (model 5491B)) AC technique: true RMS, AC-coupled, 1000 V Peak AC 3.2.1... - Page 19 6. Press to turn on the secondary display, Use key to choose the function for secondary display. 7. Take readings from the display. DC VOLTAGE SOURCE Input Resistance = 10 MΩ CAUTION: Maximum Input = 1010 V peak AC VOLTAGE SOURCE Input Impedance = 1.1 MΩ...
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Page 20: Measuring Current
Current measurement is available in Auto range for the lower current measurements only. Note: For 2831E, readings that are below 200 mA using the low current measurement input can be set in auto range. This means it will auto range between 2 mA, 20 mA, and 200 mA range. For readings above 200 mA, auto range is not available. - Page 21 6. Take readings from the display. DC CURRENT SOURCE (Model 2831E) DC Current measurement on Range: 2 mA, 20 mA, 200 mA (Model 5491B) DC Current measurement on Range: 5 mA, 50 mA, 500 mA AC CURRENT SOURCE (Model 2831E) AC Current measurement on Range: 2 mA, 20 mA, 200 mA...
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Page 22: Front Panel Fuse Replacement
DC CURRENT SOURCE (Model 2831E) DC Current measurement on Range: 2 A, 20 A (Model 5491B) DC Current measurement on Range: 5 A, 20 A AC CURRENT SOURCE (Model 2831E) AC Current measurement on Range: 2 A, 20 A (Model 5491B) AC Current measurement on Range: 5 A, 20 A... -
Page 23: Measuring Resistance
4. Install the new fuse by reversing the procedure above. Measuring Resistance Model 2831E Resistance measurement range: 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, 2 MΩ, 20 MΩ; Maximum resolution: 10 mΩ (on 200 Ω range) Model 5491B Resistance measurement range: 500 Ω, 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 50 MΩ; Maximum resolution: 10 mΩ... -
Page 24: Measuring Frequency And Period
Note: Source current flows from the to COM terminals Figure 3-3 Resistance Measurements Measuring Frequency and Period Frequency measurement range: 5 Hz to more than 1 MHz. Period measurement range: 0.2 s to less than 1 µs. Input signal range: 200 mV AC to 750V AC. The instrument uses the volts input terminals to measure frequency. -
Page 25: Measuring Continuity
3-1. This beep will sound within less than half a second when reading measured is below the threshold. Table 3-1 Threshold resistance levels in Continuity Test Model 2831E Measuring range Beeper on 200.00 Ω... -
Page 26: Connections
3.6.1 Connections Assuming the multimeter is under factory default conditions, the basic procedure to measure continuity is as follows: 1. Connect test leads to and COM terminals. 2. Select Continuity measurement function by pressing → 3. Connect test leads to the resistance under test as shown in Figure 3-5. 4. -
Page 27: Measuring True Rms Ac+Dc
Diode Figure 3-6 Diode Measurement Note: Source current flows from the to COM terminals Measuring True RMS AC+DC The multimeter can measure the True RMS value of AC+DC voltages or currents (available in manual range mode only). When is pressed, the multimeter will measure the dc and ac signals respectively and then calculate and display the AC+DC RMS value by using the following formula: 3.8.1 Connections... -
Page 28: Using The 2 Nd Parameter Display
VOLTAGE SOURCE DC+AC RMS volt measurement CURRENT SOURCE DC+AC RMS current measurement Figure 3-7 True RMS value of AC+DC voltages and currents Measurement 3.8.2 Using the 2 parameter display The 2 display is one of the most useful features designed in to the multimeter. Users may read two different parameters at the same time. -
Page 29: Math Functions
Table 3-2 Available 2 display parameters for different measurement functions Secondary Display Primary Display DC V AC V AC V DC V DC V+AC V AC V DC V DC I AC I AC I DC I DC I+AC I AC I DC I AC V/AC I... -
Page 30: Db Calculation
1. Press → for percent math operation and the present reference value displays: +1.00000 2. Use keys to choose a numerical place and use keys to increment or decrement the digits. Enter a value and units prefix. 3. Press (ENTER) to confirm the reference value. The message “SAVED” will be displayed for a moment. -
Page 31: Dbm Calculation
To set the reference voltage, perform the following steps: 1. Press for dB math operation and the present reference value is displayed: R.F：+0.00000 2. Use keys to choose a numerical place and use keys to increment or decrement the digits. Enter a value and units prefix. 3. - Page 32 To set the reference impedance, perform the following steps: 1. Press for dBm math operation and the present reference value is displayed: → REF：0000 2. Use keys to choose a numerical place and use keys to increment or decrement the digits. Enter a value from 1 Ω to 9999 Ω. 3.
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Page 33: Chapter 4 Measurement Options
Chapter 4 Measurement Options This chapter provides description of the front panel features of the multimeter. For those measurement options accessible only by a remote interface, refer to Chapter 5 and 6. This chapter is organized as follows: " Measurement Configuration – Describes Ranging, Relative readings, Digits of Resolution and Measurement rate "... -
Page 34: Relative
For example: on the 2 V range, model 2831E still overflows for a 2.1 V input. For model 5491B, on the 5 V range it will still overflow for a 5.1 V input. -
Page 35: Trigger Operations
The RATE parameters are explained as follows: Fast FAST sets speed to 25 readings per second. Use FAST, if speed is of primary importance, however it is at the expense of increased reading noise and fewer usable digits (resolution). Medium Medium sets speed to 10 readings per second. -
Page 36: Reading Hold
4. Use key to move across to the TRIG MODE command on the command level. “1: TRIG MOD” will be displayed. 5. Press to move down a level to select a trigger source. 6. Using to select between IMM, MAN or BUS trigger source. 7. -
Page 37: Enabling Limits
4.4.1 Enabling limits Use the following procedure to turn on the limit operation: Press to enable or disable LIMIT TEST function. → 4.4.2 Setting Limit Values Use the following steps to enter high and low limit values: Press to enter the menu on the menu level. →... -
Page 38: Beeper Control
Terminal character setup. The information is not directly related to making measurements but is an important part of operating the multimeter. 4.5.1 Beeper Control Normally, the multimeter will emit a tone whenever certain conditions are met. For example: the multimeter will beep when a stable reading is captured in reading hold. You may want to disable the beeper for certain applications. -
Page 39: Selecting The Terminal Character
" 1200 " Note: Factory default baud rate is 9600. Before you choose a baud rate, make sure the programming terminal on a computer that will be used to connect to the instrument supports the baud rate you selected. Both the digital multimeter and the computer must be configured for the same baud rate. -
Page 40: Key Sound
Press (ENTER) to confirm the selection. The message “SAVED” will be displayed to show that the change is now in effect. The multimeter will exit the parameter level and move up a level to the command level. Press key to exit from the menu and return to the measurement status. →... -
Page 41: Chapter 5 Remote Operation
Chapter 5 Remote Operation Besides the front panel control, the multimeter provides a USB interface and RS232 interface (model 5491B only) for remote control. Standard Commands for Programmable Instruments (SCPI) is fully supported to communicate with computer via the serial interface. USB &... -
Page 42: Software Protocol
" Note: Factory default baud rate is 9600. Refer to section 4.5.2 for details on configuring baud rate settings on the multimeter. 5.2.4 Software Protocol Please refer to the content below before programming application software. For command syntax and format, refer to Chapter 6 Command Reference. The controller transmits the command using the ASCII code with <LF>... -
Page 43: Chapter 6 Scpi Command Reference
Chapter 6 SCPI Command Reference This chapter provides descriptions of all available remote communication commands which correspond to Standard Commands for Programmable Instruments (SCPI) command sets. Use this chapter as a reference. Command structure Commands are divided into two types: common commands and SCPI commands. The common commands are defined in IEEE std. - Page 44 Brackets [ ]: Some command words are enclosed in brackets. These brackets are used to denote an optional command word that does not need to be included in the program message. For example: :RANGe[:UPPer] <n> These brackets indicate that :UPPer is optional and does not have to be used. Thus, the above command can be sent in one of the two ways below: :RANGe <n>...
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Page 45: Short-Form Rules
<n> Numeric value: A numeric value parameter can consist of a NRf number or one of the following name parameters: DEFault, MINimum, MAXimum. When DEFault parameter is used, the instrument is programmed to the *RST default value. When the MINimum parameter is used, the instrument is programmed to the lowest allowable value. -
Page 46: Multiple Command Rules
The command header should be followed by a question mark (?) to generate a query for that command. For example: FUNC? 6.2.4 Multiple Command Rules The semicolon (;) can be used as a separator to execute multiple commands on a single line. The multiple command rules are as follows. - Page 47 Table 6-1 DISPlay Subsystem Commands Summary Command Function Description :DISPlay :ENABle <b> Enable or disable front panel display :ENABle? Query state of the display :ENABle <b> Command syntax: :DISPlay:ENABle <b> Command Parameter: <b> = 0 or OFF Disable front panel display 1 or ON Enable front panel display Query:...
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Page 48: Function Subsystem
6.3.2 FUNCtion subsystem The commands in this subsystem are used to configure the measurement function subsystems and are summarized in Table 6-2. Table 6-2 FUNCtion Subsystem Commands Summary Commands Selectable Functions :FUNCtion <name> Select measurement function: VOLTage:AC, VOLTage:DC, RESistance, CURRent:AC, CURRent:DC, FREQuency, PERiod, DIODe, CONTinuity. -
Page 49: Voltage Subsystem
6.3.3 VOLTage subsystem The commands in this subsystem are used to configure and control voltage measurement function and are summarized in Table 6-3. Table 6-3 VOLTage Subsystem Commands Summary Command Function Description Default :VOLTage:DC Path to configure DC voltage :NPLCycles <n> Set integration rate (*power line cycle: 0.1,1, or 10) :NPLCycles? Query power line cycle integration rate... - Page 50 Command Parameter: <n> = 0.1, 1, 10 Set power line cycles per integration DEFault MINimum MAXimum Query: :NPLCycles? Query programmed NPLC value Description: The integration period (measurement speed) for the basic measurement functions (except Frequency and Period) is set using the:NPLCycles command. NPLC (Number of Power Line Cycles) expresses the integration period based on the power line frequency.
- Page 51 <b> = 1 or ON Enable auto range 0 or OFF Disable auto range Query: :AUTO? Query auto range (ON or OFF) Description: These commands are used to control auto ranging. With auto ranging enabled, the instrument automatically goes to the most ideal range to perform the measurement. The auto range command (:RANGe:AUTO) is coupled to the command that manually selects the measurement range (:RANGe <n>).
- Page 52 by :REFerence <n> or :ACQuire command. If not, and error will occur in the return string.) :STATe <b> Command syntax: :VOLTage:AC:REFerence:STATe <b> Control reference for ACV :VOLTage:DC:REFerence:STATe <b> Control reference for DCV Command parameter: <b> = 1 or ON Enable reference 0 or OFF Disable reference Query:...
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Page 53: Current Subsystem
6.3.4 CURRent subsystem The commands in this subsystem are used to configure and control current measurement function and are summarized in Table 6-4. Table 6-4 CURRent Subsystem Commands Summary Command Function Description Default :CURRent:DC Path to configure DC current :NPLCycles <n> Set integration rate(*power line cycles: 0.1, 1, 10) :NPLCycles? Query line cycle integration rate... - Page 54 Command Parameter: <n> = 0.1, 1, 10 Set power line cycles per integration DEFault MINimum MAXimum Query: :NPLCycles? Query programmed NPLC value Description: The integration period (measurement speed) for the basic measurement functions (except Frequency and Period) is set using the :NPLCycles command. NPLC (Number of Power Line Cycles) expresses the integration period by basing it on the power line frequency.
- Page 55 Command parameter: <b> = 1 or ON Enable auto range 0 or OFF Disable auto range Query: :AUTO? Query auto range (ON or OFF) Description: These commands are used to control auto ranging. With auto ranging enabled, the instrument automatically goes to the most ideal range to perform the measurement. The auto range command (:RANGe:AUTO) is coupled to the command that manually selects the measurement range (:RANGe <n>).
- Page 56 Conversely, when a reference is set using the :ACQuire command, the :REFerence? query command returns the acquired reference value. :STATe <b> Command syntax: : CURRent:AC:REFerence:STATe <b> Control reference for ACI : CURRent:DC:REFerence:STATe <b> Control reference for DCI Command parameter: <b> = 1 or ON Enable reference 0 or OFF...
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Page 57: Resistance Subsystem
6.3.5 RESistance subsystem The commands in this subsystem are used to configure and control resistance measurement function and are summarized in Table 6-5. Table 6-5 RESistance Subsystem Commands Summary Command Function Description Default :RESistance Path to configure resistance :NPLCycles <n> Set integration rate (*power line cycles: 0.1, 1, 10) :NPLCycles? Query line cycle integration rate... - Page 58 20 Ω, simply let the parameter <n> = 20 in order to select the 200 Ω range (for model 2831E). If you expect a reading of approximately 50 Ω, simply let the parameter <n> = 50 in order to select the 500 Ω range (for model 5491B).
- Page 59 :REFerence <n> Commands :REFerence <n> Command syntax: :RESistance:REFerence <n> Specify reference for Ω Command parameter: <n> = 0 to 20e6 Reference for Ω DEFault 0 (All measurement functions) MINimum Minimum value for specified function MAXimum Maximum value for specified function Query: :REFerence? Query reference for relative function...
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Page 60: Frequency And Period Subsystem
:ACQuire Command syntax: :RESistance:REFerence:ACQuire Acquire reference for Ω Description: When one of these commands is sent, the measurement input signal is acquired and established as the reference value. This command is typically used to zero the display. For example, if the instrument is displaying a 0.1 Ω... - Page 61 :RANGe <n> Command syntax: :FREQuency:THReshold:VOLTage:RANGe <n> Set voltage threshold range. :PERiod:THReshold:VOLTage:RANGe <n> Set voltage threshold range. Command parameter: <n> = 0 to 1010 Specify signal levels in volts (voltage threshold) Query: :RANGe? Query maximum signal level. Description: These commands are used to specify the expected input level. The instrument will then automatically select the most ideal current or voltage threshold range.
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Page 62: Trigger Subsystem
:STATe <b> Command syntax: :FREQuency:REFerence:STATe <b> Control reference for FREQ :PERiod:REFerence:STATe <b> Control reference for PER Command parameter: <b> = 1 or ON Enable reference 0 or OFF Disable reference Query: :STATe? Query state of reference. Description: These commands are used to enable or disable “reference” for the specified function. When enabled, the displayed reading will include the programmed reference value. -
Page 63: Fetch Subsystem
Table 6-8 TRIGger Subsystem Commands Summary Command Function Description Default :TRIGger :SOURce <name> Select control source IMMediate :SOURce? Query control source :TRIGger TRIGger subsystem commands are used for the instrument settings of trigger mode, trigger delay and triggering a measurement. :SOURce <name>... -
Page 64: System Subsystem
Reset the instrument *TRG Command Syntax: *TRG Description: Trigger the instrument for measurement *IDN? Query Syntax: *IDN? Query return: <product>,<version><LF^END> Here: <product> 2831E Multimeter <version> Ver1.0.09.12.03 Description: Query information of the instrument GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 65: Chapter 7 Specifications
Chapter 7 Specifications Introduction Chapter 7 describes the complete specifications of the multimeter. Technical Specifications Specifications are based on the following conditions: " One year calibration cycle. " Operating temperature at 18 °C to 28 °C " Accuracy is expressed as: ± (% of reading + % of range) after 30 minutes warm-up. "... - Page 66 MODEL 2831E SPECIFICATIONS DC Voltage Resolution, Full Scale reading and Accuracy: ± (% of reading + % of range), 23 °C ± 5 °C Typical Full Scale Accuracy Rate Range Resolution Input Reading (1 year) Impedance 200.00 mV 10 µV 210.00...
- Page 67 DC Current : ± (% of reading + % of range), 23 °C ± 5 °C Full Scale Accuracy Burden Voltage Rate Range Resolution Reading (1 year) & Shunt Resistor 2.0000 mA 0.1 µA 2.1000 0.08 +0.025 <0.3 V / 100 Ω 20.000 mA 1 µA 21.000...
- Page 68 Resistance : ± (% of reading + % of range), 23 °C ± 5 °C Full Scale Accuracy Rate Range Resolution Test Current Reading (1 year) 200.00 Ω 10 mΩ 210.00 0.5 mA 0.30 +0.05 2.0000 kΩ 100 mΩ 2.1000 0.45 mA 0.10 +0.025...
- Page 69 AC Voltage Resolution, Full Scale reading and Accuracy Range Resolution Full Scale Reading 500.00 mV 10 µV 510.00 5.0000 V 100 µV 5.1000 50.000 V 1 mV 51.000 500.00 V 10 mV 510.00 750.0 V 100 mV 757.5 1% over-range (757.50 V) is readable at 750 V range ACCURACY: ±...
- Page 70 DC Current : ± (% of reading + % of range), 23 °C ± 5 °C Full Scale Accuracy Burden Voltage Rate Range Resolution Reading (1 year) & Shunt Resistor 5.0000 mA 0.1 µA 5.1000 0.05 +0.01 <0.6 V / 100 Ω 50.000 mA 1 µA 51.000...
- Page 71 +0.04 Maximum Input Protection: 1000 VDC or 750 VAC for all ranges. Open circuit voltage: <5.5 VDC Test Current: around 0.5 mA DC Threshold value: 2% of range SPECIFICATIONS FOR MODEL 2831E AND 5491B Diode Full Scale Rate Range Resolution...
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Page 72: General Specifications
Dimensions (W×H×D): 225 mm 100 mm 355 mm × × Net Weight: Around 2.5 kg Warranty: 1 year (Model 2831E), 3 years (Model 5491B) *Specifications are subject to change without notice. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...