Model 2831E , 5491B 4 ½ Digit and 50,000 Count Bench Multimeters USER MANUAL
Notice The information contained in this document is subject to change without 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. This equipment is POLLUTION DEGREE 2, INDOOR USE product.
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.
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 (1000V) IEC Measurement Category II. Inputs may be connected to mains (up to 300 VAC) under Category II overvoltage conditions. CAT II (300V) IEC Measurement Category II. Inputs may be connected to mains (up to 300 VAC) under Category II overvoltage conditions.
Table of Contents Notice ................................................................................................................................................... 2 Safety Notice Supplement .................................................................................................................... 2 Safety Summary ................................................................................................................................... 2 Chapter 1 General Information...............
3.9.2 dB Calculation.............................................................................................................................. 30 3.9.3 dBm Calculation .......................................................................................................................... 31 Chapter 4 Measurement Options.................................................................................................. 33 4.1 Measurement configuration ....................................................
6.3.9 SYSTem Subsystem ................................................................................................................... 64 6.3.10 Common Commands ............................................................................................................... 64 Chapter 7 Specifications ................................................................................................................ 65 SERVICE INFORMATION ......................................................................
Chapter 1 1.1 General Information Feature Overview 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.
Chapter 2 2.1 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 Display Current Input fuse On /off Switch 5. Range Selection 4. Menu Operation 3. 2nd Display 7. Shift/local 6. Hold/Trig And speed key Key Key Figure 2-1 1. Front Panel 3.
5. Range and Combination function selecting keys Select a 2nd display parameter Select a 2nd 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. 6. Trig/Hold Key Trig Trigger a measurement from the front panel. Trig 7. Hold a reading on the display. Shift/Local keys Used to access shifted keys. (LOCAL) Cancel remote control mode and back to the LOCAL mode. 2.
HI/IN/LO RMT AUTO Max/Min ERR SHIFT Indicates the limit testing results Multimeter is in remote control mode Auto ranging enabled MAX / MIN operation is enabled Hardware or remote control error detected Accessing shifted keys 2.3 Front Panel Menu Reference A：MATH MENU 1: HI LIMIT → 2: LO LIMIT → 3: PERC REF → 4: dB REF→ 5: dBm REF 1. HI LIMIT Set the high limit for limit testing. 2. LO LIMIT Set the low limit for limit testing. 3. PERC REF Set the reference value for PERCENT function 4.
2.4 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. Each of the three levels has several horizontal choices which you can view by using left ( ) or right ( ). Menus Commands Parameters Figure 2-3 Menu Tree To turn on the menu, press To turn off the menu, press the front panel.
2.5 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. 4 1 2 3 Figure 2-4 Rear Panel 1. USB Device Port Connection port for USB remote control. 2. Grounding Chassis Grounding terminal 3. Power-Line Fuse-Holder Assembly The multimeter can be configured for line voltage of 110/220 V ± 10% AC at line frequency of 50/60 Hz ± 5%. Power-line fuse is used for instrument protection.
2.6 2.6.1 Power up Power Line Connection Follow the procedure below to connect the multimeter to line power and turn on the instrument. 1. 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 ± 5% (or 47.5 to 52.5 Hz) and that the line voltage switch is in the correct position before connecting the power cord.
2 mA-200 mA for 2831E, 5 mA-500 mA for model 5491B range DC/AC current input terminal for DC/AC current 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 terminal for DC/AC current measurement T1AL/250 V type fuse for the mA measurement range Figure 2-5 Input terminals Table 2-1 Input protection Limits 2.6.
hands-off measurements. Do not use test leads or accessories that decrease voltage spacing. This diminishes arc protection and creates a hazardous condition. Use the following sequence when measuring high energy circuits: 1. De-energize the circuit using a regular installed connect-disconnect device, such as a circuit breaker, main switch, etc. 2. Attach the test leads to the circuit under test. Use appropriate safety rated test leads. 3. Set the multimeter to the proper measurement function and range.
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. 2.7 Display The display of the multimeter is primarily used to display readings, along with the units and type of measurement.
Chapter 3 3.1 Basic Measurements Preparation One of the first things you would like to do with your multimeter is to become acquainted with its front panel. We have provided some exercises in foregoing chapters about preparations for use and operations of front panel. The front panel has six rows of keys to select various functions and operations. Most keys have a shifted function printed in blue above the key. To perform a shifted function, press (the Shift annunciator will turn on).
6. Press + to turn on the secondary display, Use or 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 CAUTION: Input Impedance = 1.
3.3 Measuring Current Model 2831E current measurement range: 2 mA, 20 mA, 200 mA, *2 A, *20 A Model 5491B current measurement range: 5 mA, 50 mA, 500 mA, *5 A, *20 A *Indicates range is available for manual range only. Auto range will not work when reading requires setting to this range. Maximum resolution: 100nA (on 2 mA range (on 5 mA range for model 5491B)) Current measurement is available in Auto range for the lower current measurements only.
5. In manual range, if the “OVL.D” message is displayed, press up key to select a higher range until a desired reading is displayed. Use the lowest possible range for the best resolution. Press + to turn on the 2nd parameter display, Use or key to select function for 2nd display. 6. Take readings from the display.
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 CAUTION: 3.3.
2. From the front panel, use a screwdriver to rotate the fuse carrier several turns counter-clockwise. Take the fuse carrier out of the socket. 3. Remove the fuse and replace it with the same type (T1AL, 250V, 5×20mm）. CAUTION: Do not use a fuse with a higher current rating than specified or instrument may be damaged. If the instrument repeatedly blows fuses, try to find out the reason before replacing the fuse. 4. Install the new fuse by reversing the procedure above. 3.
Note: Source current flows from the to COM terminals Figure 3-3 Resistance Measurements 3.5 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. The AC voltage range can be changed with the RANGE and keys. However, the signal voltage must be greater than 10% of the full-scale range. 3.5.
damaged. 4. Take reading from the display AC VOLTAGE SOURCE CAUTION: Figure 3-4 Frequency and Period Measurements Input Impedance =1.1 MΩ in parallel with 100 pF Maximum Input = 750 V RMS or 1000 V peak, 3x107 V-Hz 3.6 Measuring Continuity Under continuity test, when 200 Ω range is selected, the multimeter alerts you with a beep when a reading is below a threshold resistance level of 10 Ω. For other ranges, the beeper will sound if a reading is below a threshold resistance level listed in table 3-1.
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. Take reading from the display Figure 3-5 Note: Continuity Measurement Source current flows from the 3.7 to COM terminals.
Diode Figure 3-6 Note: Diode Measurement Source current flows from the 3.8 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: ( AC + DC ) RMS = dc 2 + ac 2 3.8.
VOLTAGE SOURCE DC+AC RMS volt measurement CURRENT SOURCE Figure 3-7 3.8.2 DC+AC RMS current measurement True RMS value of AC+DC voltages and currents Measurement Using the 2nd parameter display The 2nd display is one of the most useful features designed in to the multimeter. Users may read two different parameters at the same time. The available 2nd display parameters under different main measurement functions are listed in Table 3-2.
Table 3-2 Available 2nd display parameters for different measurement functions Secondary Display Primary Display DC V AC V dBm dB Hz AC V DC V dBm dB Hz DC V+AC V dBm dB Hz AC V DC I AC I Hz AC I DC I Hz DC I+AC I Hz AC I Hz AC V/AC I AC I/AC V DC I Percentage (%) (Measuring value) % Comp (Measuring value) HI，IN，LO，PASS，FAIL Max/Min (Measuring value) DC V Max Min Note: When a 2nd parameter is displayed, the measurement range for that measurement is based on the main meas
1. Press → +1.00000 2. Use and Rel for percent math operation and the present reference value displays: keys to choose a numerical place and use and 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. 4. The meter will then display the result of the percent 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 and keys to choose a numerical place and use and keys to increment or decrement the digits. Enter a value and units prefix. 3. Press (ENTER) to confirm the reference voltage, the message “SAVED” will be displayed for a moment. Then the meter will return back to the measurement status. 4. The display will now show result of the dB calculation.
To set the reference impedance, perform the following steps: 1. Press REF：0000 → 2. Use and for dBm math operation and the present reference value is displayed: keys to choose a numerical place and use and keys to increment or decrement the digits. Enter a value from 1 Ω to 9999 Ω. 3. Press (ENTER) to confirm the reference impedance, the message “SAVED” will be displayed for a moment. The meter will then return back to the measurement status. 4.
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.
measure the applied signal. However, auto ranging should not be used when optimum speed is required. Note that up-ranging and down-ranging occurs at 5% of normal range. To cancel auto ranging, press or or key. Pressing to cancel auto ranging leaves the instrument in its present manual range. The 4.1.2 key has no effect on the continuity and diode test functions. Relative The relative operation could be used to null offsets or subtract a baseline reading from present and future readings.
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. Use Medium to achieve a balance between noise performance and speed. Slow Slow sets speed to 5 readings per second. SLOW provides better noise performance and resolution at the expense of speed.
4. Use or 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 or to select between IMM, MAN or BUS trigger source. 7. Press (ENTER) to confirm the selection. The message “SAVED” will be displayed to show that the change is now in effect. The multimeter automatically exits the parameter level and moves up a level to the command level. 4.2.
4.4.1 Enabling limits Use the following procedure to turn on the limit operation: 1. → Press 4.4.2 to enable or disable LIMIT TEST function. Setting Limit Values Use the following steps to enter high and low limit values: 1. Press → to enter the menu on the menu level. 2. Use or key to move across to the MATH MEU on the menu level, “A: MATH MEU” will be displayed. 3. Press 4. Use to move down to the command level within the MATH MEU.
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. When you disable the beeper, the multimeter will not emit a tone when: 1. A limit is exceeded in a limit test 2.
Note: 1200 600 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. Perform the following steps to select a baud rate 1. Press → to enter the menu on the menu level, “A: MATH MEU” will be displayed. 2.
7. 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. 8. Press 4.5.4 → key to exit from the menu and return to the measurement status. Key Sound The multimeter has a key sound function and you can enable or disable it. The key sound state is stored in non-volatile memory and does not change when power has been off after a reset.
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. 5.1 USB & RS232 You can connect the USB interface or RS232 interface (Model 5491B only) to a computer.
Note: 600 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. 1. For command syntax and format, refer to Chapter 6 Command Reference. 2. The controller transmits the command using the ASCII code with or as the termination character. The multimeter executes the command after the termination character is received. 3.
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. 6.1 Command structure Commands are divided into two types: common commands and SCPI commands. The common commands are defined in IEEE std. 488.2-1987, and these commands are common for all devices. Not all commands are supported by the multimeter.
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] 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: or :RANGe :RANGe:UPPer NOTICE: When using optional command words in your program, do not include the brackets.
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. When the MAXimum parameter is used, the instrument is programmed to the largest allowable value.
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. Commands at the same level and in the same subsystem command group can be separated by a semicolon (;) on a multiple command line.
Table 6-1 Command :DISPlay :ENABle :ENABle? DISPlay Subsystem Commands Summary Function Description Enable or disable front panel display Query state of the display :ENABle Command syntax: :DISPlay:ENABle Command Parameter: = 0 or OFF 1 or ON Query: :ENABle? Disable front panel display Enable front panel display Query state of the display Description: This command is used to enable or disable front panel display circuitry. When disabled, the instrument operates at a higher speed.
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 :FUNCtion Selectable Functions Select measurement function: VOLTage:AC, VOLTage:DC, RESistance, CURRent:AC, CURRent:DC, FREQuency, PERiod, DIODe, CONTinuity.
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 :VOLTage:DC :NPLCycles :NPLCycles? :RANGe [:UPPer] [:UPPer]? :AUTO :AUTO? :REFerence :STATe :STATe? :ACQuire :REFerence? Path to configure DC voltage Set integration rate (*power line cycle: 0.
Command Parameter: = 0.1, 1, 10 DEFault MINimum MAXimum Query: :NPLCycles? Set power line cycles per integration 1 10 0.1 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.
= 1 or ON 0 or OFF Query: :AUTO? Enable auto range Disable auto range 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 ).
by :REFerence or :ACQuire command. If not, and error will occur in the return string.) :STATe Command syntax: :VOLTage:AC:REFerence:STATe :VOLTage:DC:REFerence:STATe Control reference for ACV Control reference for DCV Command parameter: = 1 or ON 0 or OFF Enable reference Disable reference Query: :STATe? Query state of reference. Description: These commands are used to enable or disable “reference” for the specified function.
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 :CURRent:DC :NPLCycles :NPLCycles? :RANGe [:UPPer] [:UPPer]? :AUTO :AUTO? :REFerence :STATe :STATe? :ACQuire :REFerence? Path to configure DC current Set integration rate(*power line cycles: 0.
Command Parameter: = 0.1, 1, 10 DEFault MINimum MAXimum Query: :NPLCycles? Set power line cycles per integration 1 10 0.1 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.
Command parameter: = 1 or ON 0 or OFF Enable auto range 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 ).
Conversely, when a reference is set using the :ACQuire command, the :REFerence? query command returns the acquired reference value. :STATe Command syntax: : CURRent:AC:REFerence:STATe : CURRent:DC:REFerence:STATe Control reference for ACI Control reference for DCI Command parameter: = 1 or ON 0 or OFF Enable reference Disable reference Query: :STATe? Query state of reference. Description: These commands are used to enable or disable :reference” for the specified function.
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 :RESistance :NPLCycles :NPLCycles? :RANGe [:UPPer] [:UPPer]? :AUTO :AUTO? :REFerence :STATe :STATe? :ACQuire :REFerence? Function Description Path to configure resistance Set integration rate (*power line cycles: 0.
:RANGe Commands :[UPPer] Command syntax: :RESistance:RANGe[:UPPer] Set measurement range for Ω Command Parameter: = 0 to 20e6 DEFault MINimum MAXimum Expected reading is ohms 20e6 (Ω) 0 (All functions) Same as DEFault Query: :RANGe[:UPPer]? Query measurement range of the current function. Description: This command is used to manually select the measurement range for the specified measurement function. The range is selected by specifying the expected reading as an absolute value.
:REFerence Commands :REFerence Command syntax: :RESistance:REFerence Command parameter: = 0 to 20e6 DEFault MINimum MAXimum Query: :REFerence? Specify reference for Ω Reference for Ω 0 (All measurement functions) Minimum value for specified function Maximum value for specified function Query reference for relative function Description: These commands are used to establish a reference value for the specified function.
: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 offset, sending this command and enabling reference zeroes the display. This command is functional only if the instrument is on the specified measurement function.
:RANGe Command syntax: :FREQuency:THReshold:VOLTage:RANGe Set voltage threshold range. :PERiod:THReshold:VOLTage:RANGe Set voltage threshold range. Command parameter: = 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.
:STATe Command syntax: :FREQuency:REFerence:STATe :PERiod:REFerence:STATe Control reference for FREQ Control reference for PER Command parameter: = 1 or ON 0 or OFF Enable reference 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.
Table 6-8 Command :TRIGger :SOURce :SOURce? TRIGger Subsystem Commands Summary Function Description Select control source Query control source Default IMMediate :TRIGger TRIGger subsystem commands are used for the instrument settings of trigger mode, trigger delay and triggering a measurement.
6.3.9 SYSTem Subsystem SYSTem:ERRor Command Command syntax: :SYSTem:ERRor? Description: This query command is used to query error messages from the error queue. From front display, if a wrong command has been sent, the display will show an error message for approximately one second. That error can be queried from the error queue by sending this command. Error Messages: “NO ERROR!” – This means no error(s) have occurred. “BUS:BAD COMMAND.
Chapter 7 Specifications A-1 Introduction Chapter 7 describes the complete specifications of the multimeter. A-2 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. Temperature Coefficient: add ± [0.
MODEL 2831E SPECIFICATIONS DC Voltage Resolution, Full Scale reading and Accuracy: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range Resolution Slow 200.00 mV 2.0000 V 20.000 V 200.00 V 1000.0 V 10 μV 100 μV 1 mV 10 mV 100 mV (1) Full Scale Reading 0.03%+0.08% (1) 0.03%+0.05% (1) 0.03%+0.06% 0.03%+0.06% 0.03%+0.06% 210.00 2.1000 21.000 210.00 1010.0 (2) Typical Input Impedance Accuracy (1 year) >10 MΩ >11.1 MΩ >10.
DC Current: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range Slow 2.0000 mA 20.000 mA 200.00 mA 2.0000 A 20.000 A (1) (2) (3) Resolution 0.1 μA 1 μA 10 μA 100 μA 1 mA Full Scale Reading Accuracy (1 year) 0.08%+0.025% (2) 0.08%+0.02% (2) 0.08%+0.02% 0.3%+0.025% 0.3%+0.025% 2.1000 21.000 210.00 2.1000 21.000 (3) Typical voltage across the input terminals at full scale reading.
Resistance: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range (1) Slow 200.00 Ω 2.0000 kΩ 20.000 kΩ 200.00 kΩ 2.0000 MΩ 20.000 MΩ Full Scale Reading Resolution 10 mΩ 100 mΩ 1Ω 10 Ω 100 Ω 1 kΩ Test Current Accuracy (1 year) 0.5 mA 0.45 mA 45 μA 4.5 μA 450 nA 45 nA 0.10%+0.05% (2) 0.10%+0.025% (2) 0.10%+0.025% (2) 0.10%+0.025% 0.15%+0.025% 0.3%+0.05% 210.00 2.1000 21.000 210.00 2.1000 21.
AC Voltage Resolution, Full Scale reading and Accuracy Range 500.00 mV 5.0000 V 50.000 V 500.00 V 750.0 V (1) Resolution 10 μV 100 μV 1 mV 10 mV 100 mV Full Scale Reading 510.00 5.1000 51.000 510.00 757.5(1) 1% over-range (757.50 V) is readable at 750 V range ACCURACY: ± (% of reading + % of range), 23 °C ± 5 °C Rate Slow Range (2) 20-50 Hz 50-20 kHz 20-50 kHz 50-100 kHz 500.00 mV 1.0%+0.08% 0.5%+0.06% 1.5%+0.1% 3.0%+0.3% 5.0000 V 1.0%+0.08% 0.35%+0.02% 1%+0.04% 3.0%+0.1% 50.000 V 1.
DC Current: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range Slow 5.0000 mA 50.000 mA 500.00 m A 5.0000 A 20.000 A (1) (2) (3) Resolution 0.1 μA 1 μA 10 μA 100 μA 1 mA Full Scale Reading Accuracy (1 year) 0.05%+0.01% (2) 0.05%+0.008% (2) 0.05%+0.008% 0.25%+0.01% 0.25%+0.01% 5.1000 51.000 510.00 5.1000 21.000 (3) Typical voltage across the input terminals at full scale reading.
Resistance: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range (1) Slow 500.00 Ω 5.0000 kΩ 50.000 kΩ 500.00 kΩ 5.0000 MΩ 50.000 MΩ Full Scale Reading Resolution 10 mΩ 100 mΩ 1Ω 10 Ω 100 Ω 1 kΩ 510.00 5.1000 51.000 510.00 5.1000 51.000 Test Current Accuracy (1 year) 0.5 mA 0.45 mA 45 μA 4.5 μA 450 nA 45 nA 0.10%+0.01% (2) 0.10%+0.008% (2) 0.10%+0.008% (2) 0.10%+0.008% 0.15%+0.008% 0.3%+0.
Period: ± (% of reading + % of range), 23 °C ± 5 °C ACV Range Frequency Range 200 mV (*500 mV) to 750 V 1-10 μs 10 μs-10 ms 10 ms-100 ms 100 ms Best Resolution 0.1 ns 1 ns 1 μs 10 μs Full Scale Reading 9.9999 9.9999 99.999 199.99 Accuracy Input Sensitivity (Sine Wave) 0.01%+0.008% 0.01%+0.008% 0.01%+0.02% 0.05%+0.02% 500 mV rms 300 mV rms 300 mV rms 200 mV rms *Applies to model 5491B Maximum Crest factor: 3.
SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Non-Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #.
LIMITED WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of one year for model 2831E only and three years for model 5491B only from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.
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