Fluke 125B/S Calibration Guide - Page 15

Industrial ScopeMeter



Specifications

7

with iFlex clamp

Ranges

............................................................

20 A/division

Maximum Current

...........................................

75 A @ 40 Hz to 300 Hz

Frequency derating: I * F <22 500 A*Hz @ 300 Hz to 3000 Hz

Accuracy

.........................................................

±(1.5 % + 10 counts) @ 40 Hz to 60 Hz

±(3 % + 15 counts) @ 60 Hz to 1000 Hz

±(6 % + 15 counts) @ 1000 Hz to 3000 Hz

Temperature (TEMP) with optional temperature probe

Range

.................................................................

200

°

C/div (200

°

F/div)

Scale Factor

........................................................

1 mV/

°

C and 1 mV/

°

F

Accuracy

.............................................................

as VDC (add temp. probe uncertainty)

Decibel (dB)

0 dBV

..................................................................

1 V

0 dBm (600

Ω

/50

Ω

)

...........................................

1 mW referenced to 600

Ω

or 50

Ω

dB on

...................................................................

VDC, VAC, or VAC+DC

Full Scale Reading

..............................................

1000 counts

Crest Factor (CREST)

Range

.................................................................

1 to 10

Accuracy

....................................................................

±

(5 % + 1 count)

Full Scale Reading

..............................................

90 counts

Phase

Modes

.................................................................

A to B, B to A

Range

.................................................................

0 degrees to 359 degrees

Accuracy

<1 MHz

...........................................................

2 degrees

1 MHz to 5 MHz

..............................................

5 degrees

Resolution

...........................................................

1 degree

Power (125B)

Configurations

.....................................................

1 phase / 3 phase 3 conductor balanced loads (3 phase: fundamental component only,

AUTOSET mode only)

Power Factor (PF)

...............................................

ratio between Watts and VA

Range

.............................................................

0.00 to 1.00

Watt

.....................................................................

RMS reading of multiplying corresponding samples of input A (volts) and input B (amperes)

Full Scale reading

...........................................

999 counts

VA

.......................................................................

Vrms x Arms

Full Scale Reading

..........................................

999 counts

VA Reactive (VAR)

.............................................

√

((VA)

2

-W

2

)

Full Scale Reading

..........................................

999 counts

Vpwm

Purpose

...............................................................

to measure on pulse width modulated signals, like motor drive inverter outputs

Principle

..............................................................

readings show the effective voltage based on the average value of samples over a whole

number of periods of the fundamental frequency

Accuracy

.............................................................

as Vrms for sinewave signals

Input A

Ohm (

Ω

)

Ranges

125B

................................................................

50

Ω

, 500

Ω

, 5 k

Ω

, 50 k

Ω

, 500 k

Ω

, 5 M

Ω

, 30 M

Ω

124B, 123B

.....................................................

500

Ω

, 5 k

Ω

, 50 k

Ω

, 500 k

Ω

, 5 M

Ω

, 30 M

Ω

Accuracy

....................................................................

±

(0.6 % + 5 counts)

50

ω

±

(2 % + 20 counts)

Full Scale Reading

50

Ω

to 5 M

Ω

..................................................

5000 counts

30 M

Ω

.............................................................

3000 counts

Measurement Current

.........................................

0.5 mA to 50 nA, decreases with increasing ranges

Open Circuit Voltage

...........................................

<4 V

Section	Page
123B/124B/125B	1
LIMITED WARRANTY AND LIMITATION OF LIABILITY	2
Table of Contents	3
List of Tables	5
List of Figures	7
Introduction	9
How to Contact Fluke	9
Safety Information	10
Specifications	12
Dual Input Oscilloscope	12
Cursor Readout (124B, 125B)	16
Power Quality (125B)	17
Field Bus Measurements (125B)	17
Miscellaneous	18
Environmental	18
Required Equipment	20
Performance Verification	20
Test Preparation	20
Input A and Input B Tests	21
Input A and Input B Base Line Jump Test	21
Input A Trigger Sensitivity Test	23
Input A Frequency Response Upper Transition Point Test	24
Input A Frequency Measurement Accuracy Test	24
Input B Frequency Measurement Accuracy Test	25
Input B Frequency Response Upper Transition Point Test	26
Input B Trigger Sensitivity Test	26
Input A and Input B Trigger Level and Trigger Slope Test	27
Input A and Input B DC Voltage Accuracy Test	30
Input A and Input B AC Voltage Accuracy Test	32
Input A and Input B AC Input Coupling Test	33
Input A and Input B Volts Peak Measurements Test	33
Input A and B Phase Measurements Test	35
Harmonics Test (125B)	35
Input A and B High Voltage AC/DC Accuracy Test	36
Resistance Measurements Test	38
Continuity Function Test	38
Diode Function Test	39
Capacitance Measurements Test	39
LED, Beeper, LCD, and Front Panel Functional Checks	40
WiFi Functional Check (Version Dependent)	40
Calibration Adjustment	41
Calibration Number and Date	41
Start the Calibration Adjustment	41
Warm Up and Pre-Calibration	42
Final Calibration	42
Delta T Gain, LF- HF Gain Input, Filter, A & B	42
Position, Input A and B	44
Pulse Adjust Input B	44
Gain DMM (Gain Volt)	45
Diode Zero, Gain	47
Capacitance Clamp and Zero	48
Capacitance Gain	48
Save Calibration Data and Exit	48
Test Tool Disassembly	49
Battery Pack Removal	49
Bail Removal	50
Open the Test Tool	51
Main PCA, Keypad, and Keypad Foil Removal	52
Display Assembly Removal	52
Maintenance	52
How to Clean	52
Storage	52
Battery Replacement	52

Fluke 125B/S Calibration Guide - Page 15

Temperature TEMP with optional temperature probe, Decibel dB, Crest Factor CREST, Phase, Power 125B

Page 15 highlights