Model 2831E , 5491B 4 ½ Digit and 50,000 Count Bench Multimeters USER MANUAL

10 5. Range and Combination function selecting keys Select a 2nd display parameter Select a 2nd display parameter S

11 HI/IN/LO Indicates the limit testing results RMT Multimeter is in remote control mode AUTO Auto ranging enabled Max/Min

12 2.4 Front Panel Menu Overview The menu is organized in a top-down tree structure with three levels (menus, commands and parameter

13 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 revi

14 2.6 Power up 2.6.1 Power Line Connection Follow the procedure below to connect the multimeter to line power and turn on the instrument. 1.

15 Figure 2-5 Input terminals Table 2-1 Input protection Limits Function Input Terminals Maximum Allowable Input DCV to COM 1010V DC ACV,HZ to

16 hands-off measurements.  Do not use test leads or accessories that decrease voltage spacing. This diminishes arc protection and cre

17 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 sta

18 Chapter 3 Basic Measurements 3.1 Preparation One of the first things you would like to do with your multimeter is to become acquainted with

19 6. Press + to turn on the secondary display, Use or key to choose the function for secondary display. 7. Take readings from the display

2 Notice The information contained in this document is subject to change without notice. Safety Notice Supplement As described in the International

20 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

21 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

22 (Model 2831E) DC Current measurement on Range: 2 A, 20 A (Model 5491B) DC Current measurement on Range: 5 A, 20 A (Model 2831E) AC Current me

23 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

24 Note: Source current flows from the to COM terminals Figure 3-3 Resistance Measurements 3.5 Measuring Frequency and Period Frequenc

25 damaged. 4. Take reading from the display Figure 3-4 Frequency and Period Measurements Input Impedance =1.1 MΩ in parallel with 100 pF CAUTION

26 3.6.1 Connections Assuming the multimeter is under factory default conditions, the basic procedure to measure continuity is as follows: 1. Co

27 Figure 3-6 Diode Measurement Note: Source current flows from the to COM terminals 3.8 Measuring True RMS AC+DC The multimeter can meas

28 DC+AC RMS volt measurement DC+AC RMS current measurement Figure 3-7 True RMS value of AC+DC voltages and currents Measurement 3.8.2 Using

29 Table 3-2 Available 2nd display parameters for different measurement functions Primary Display Secondary Display

3 Do not attempt any internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present. DO NOT SUBST

30 1. Press → for percent math operation and the present reference value displays: +1.00000 2. Use and keys to choose a numer

31 To set the reference voltage, perform the following steps: 1. Press + for dB math operation and the present reference value is displayed:

32 To set the reference impedance, perform the following steps: 1. Press → for dBm math operation and the present reference value is displayed

33 Chapter 4 Measurement Options This chapter provides description of the front panel features of the multimeter. For those measurement options ac

34 measure the applied signal. However, auto ranging should not be used when optimum speed is required. Note that up-ranging and down-ranging occurs

35 The RATE parameters are explained as follows: Fast FAST sets speed to 25 readings per second. Use FAST, if speed is of primary importance, ho

36 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 l

37 4.4.1 Enabling limits Use the following procedure to turn on the limit operation: 1. Press → to enable or disable LIMIT TEST function. 4.

38 Terminal character setup. The information is not directly related to making measurements but is an important part of operating the multimeter. 4.5

39  1200  600 Note: Factory default baud rate is 9600. Before you choose a baud rate, make sure the programming terminal on a computer that wil

4 SAFETY SYMBOL This symbol on an instrument indicates that the user should refer to the operating instructions located in the manual. Electrical

40 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

41 Chapter 5 Remote Operation Besides the front panel control, the multimeter provides a USB interface and RS232 interface (model 5491B only) for

42  600 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

43 Chapter 6 SCPI Command Reference This chapter provides descriptions of all available remote communication commands which correspond to Standard

44  Brackets [ ]: Some command words are enclosed in brackets. These brackets are used to denote an optional command word that does not nee

45 <n> Numeric value: A numeric value parameter can consist of a NRf number or one of the following name parameters: DEFault, MIN

46  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

47 Table 6-1 DISPlay Subsystem Commands Summary Command Function Description :DISPlay :ENABle <b> :ENABle? Enable or disable front panel d

48 6.3.2 FUNCtion subsystem The commands in this subsystem are used to configure the measurement function subsystems and are summarized in Table 6

49 6.3.3 VOLTage subsystem The commands in this subsystem are used to configure and control voltage measurement function and are summarized in Tab

5 Table of Contents Notice ...

50 Command Parameter: <n> = 0.1, 1, 10 Set power line cycles per integration DEFault 1 MINimum 10 MAXimum

51 <b> = 1 or ON Enable auto range 0 or OFF Disable auto range Query: :AUTO? Query auto range (ON or OFF) Description:

52 by :REFerence <n> or :ACQuire command. If not, and error will occur in the return string.) :STATe <b> Command syntax: :VOLTage:AC:

53 6.3.4 CURRent subsystem The commands in this subsystem are used to configure and control current measurement function and are summarized in Ta

54 Command Parameter: <n> = 0.1, 1, 10 Set power line cycles per integration DEFault 1 MINimum 10 MAXimum

55 Command parameter: <b> = 1 or ON Enable auto range 0 or OFF Disable auto range Query: :AUTO? Query auto range (ON

56 Conversely, when a reference is set using the :ACQuire command, the :REFerence? query command returns the acquired reference value.

57 6.3.5 RESistance subsystem The commands in this subsystem are used to configure and control resistance measurement function and are summarized

58 :RANGe Commands :[UPPer] <n> Command syntax: :RESistance:RANGe[:UPPer] <n> Set measurement range for Ω Command Parameter: <n

59 :REFerence <n> Commands :REFerence <n> Command syntax: :RESistance:REFerence <n> Specify reference for Ω Command paramete

6 3.9.2 dB Calculation ...

60 :ACQuire Command syntax: :RESistance:REFerence:ACQuire Acquire reference for Ω Description: When one of these commands is sent, the measur

61 :RANGe <n> Command syntax: :FREQuency:THReshold:VOLTage:RANGe <n> Set voltage threshold range. :PERiod:THReshold:VOLTage:RANGe <n

62 :STATe <b> Command syntax: :FREQuency:REFerence:STATe <b> Control reference for FREQ :PERiod:REFerence:STATe <b

63 Table 6-8 TRIGger Subsystem Commands Summary Command Function Description Default :TRIGger :SOURce <name> :SOURce? Select control so

64 6.3.9 SYSTem Subsystem SYSTem:ERRor Command Command syntax: :SYSTem:ERRor? Description: This query command is used to query error messages

65 Chapter 7 Specifications A-1 Introduction Chapter 7 describes the complete specifications of the multimeter. A-2 Technical Specificat

66 MODEL 2831E SPECIFICATIONS DC Voltage Resolution, Full Scale reading and Accuracy: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range Resolut

67 DC Current: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range Resolution Full Scale Reading Accuracy (1 year) Burden Voltage(1) & Shunt

68 Resistance: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range (1) Resolution Full Scale Reading Test Current Accuracy (1 year) Slow 200.00

69 AC Voltage Resolution, Full Scale reading and Accuracy Range Resolution Full Scale Reading 500.00 mV 5.0000 V 50.000 V 500.00 V 750.0 V 10 μV

7 6.3.9 SYSTem Subsystem ... 64 6.3.1

70 DC Current: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range Resolution Full Scale Reading Accuracy (1 year) Burden Voltage(1) & Shunt

71 Resistance: ± (% of reading + % of range), 23 °C ± 5 °C Rate Range (1) Resolution Full Scale Reading Test Current Accuracy (1 year) Slow 500.00

72 Period: ± (% of reading + % of range), 23 °C ± 5 °C ACV Range Frequency Range Best Resolution Full Scale Reading Accuracy Input Sensitivi

73 SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the

74 LIMITED WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from

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8 Chapter 1 General Information 1.1 Feature Overview The 2831E 4½ digit and 5491B 50,000 count multimeters provide measurements with high accur

9 Chapter 2 Overview 2.1 Front Panel Overview The front panel of the multimeter is shown in Figure 2-1. This figure includes some