Frequency Counter Sensitivity, Burden Voltage A, mA, µA | Fluke 187

Specifications	7
Frequency Counter Sensitivity

Frequency Counter Sensitivity

Approximate VAC Sensitivity

(RMS Sine Wave)1

Input Range

50mV

500mV

3000 mV

5V

50V

500V

1000 V

15 Hz to

100 kHz 2

5mV

20mV

500mV

0.5 V

5V

20V

100V

500 kHz 2

10mV

20mV 2000 mV

2.0V

5.0V

20V

100V

VAC Bandwidth 3

1MHz

1MHz

800kHz

950kHz

1MHz

1MHz

> 400 kHz

Approximate VDC

Trigger Levels 1

-5 mV & 5 mV

5 mV & 65 mV

140 mV & 200 mV

1.4V & 2.0 V

0.5V & 6.5 V

5 V & 65 V

5 V & 65 V

VDC

Bandwidth 3

1MHz

1MHz

90kHz

14kHz

> 400 kHz > 400 kHz > 400 kHz

. 1. Maximum input = 10 x Range (1000 V max). Noise at low frequencies and amplitudes may affect accuracy. 2. Useable at reduced sensitivity to 0.5 Hz and 1000 kHz.

. 3. Typical frequency bandwidth with full scale (or maximum 2 X 107 V-Hz product) RMS sine wave.

Burden Voltage (A, mA, µA)

Function	Range
mA - ∝ A	500.00	∝ A
	5,000 ∝	A
	50.000 mA
	400.00 mA
A	5.0000	A
	10.000	A

Burden Voltage (typical)

102 ∝ V / ∝ A

102 ∝ V / ∝ A

1.8mV / mA

1.8mV / mA

0.04V / A

0.04V / A

7-11

Image 92

Fluke 187 user manual Frequency Counter Sensitivity, Burden Voltage A, mA, µA

Contents

Model 187 Lifetime Limited Warranty Table of Contents Model 187 Making Measurements Iii Maintenance Specifications List of Tables List of Figures Viii Contacting Fluke Safety InformationBefore You Start Safety Information WWarning Before You Start Symbols International Electrical Symbols Turning the Meter On Getting AcquaintedIntroduction Battery Considerations Automatic Power Off Low Battery Indication Automatic Backlight Off Rotary Switch Rotary Switch Pushbuttons Pushbuttons Rotary Switch Selections Position Rotary Switch Function Blue Key Function Rotary Switch Positions View MEM Button Pushbuttons Yellow Button Description Function Pushbuttons Button Description Yellow Button Function Primary Display Selecting the RangeUnderstanding the Display Bar Graph Secondary Display Display Features Number Feature Display Features Description Display Features Number 8.8.8 Number Feature Display Features Description Display Features Number 51000 FMS8888 HM8888 8.8 Using the Input Terminals Input Terminals Using Display Hold Display Hold and AutoHOLD Using AutoHOLD Using MIN MAX Model 187 Using Fast MN MX Min Max Avg Using Relative Mode REL Using Hold with MIN MAX or Fast MN MX Making Measurements Measuring Voltage Measuring AC Voltage AC Voltage Measurement DB Measurements in AC Volts Functions DBm Display Measuring DC Voltage Both AC and DC Voltage Measurements AC over DC DC over AC AC and DC Display Measuring Resistance Capacitors before measuring resistance OFF Testing for Continuity Automatically subtract this value Using Conductance for High Resistance Tests For in-circuit tests, turn circuit power off Conductance Measurement Measuring Capacitance Testing Diodes Capacitance Measurement Diode Test Electrically live circuits Measuring TemperatureShock, do not connect the thermocouples to Measuring Current Input Ranges Input Alert Feature Measuring Current Measuring AC Current Following are some tips for measuring current 11. AC Current Measurement Measuring DC Current Total current to circuit Current through one component Measuring Frequency 13. Functions Allowing Frequency Measurement Measuring Duty Cycle 14. Hz Display Measures Positive Pulse Measures Negative Pulse Measuring Pulse Width 16. Duty Cycle Display Start and Stop on Positive Slope Start and Stop on Negative Slope 18. Pulse Width Display Using Memory & Communications Features Types of MemorySaved Readings Memory Logged Readings Memory Stopping Logging Storing Saved ReadingsStarting Logging Viewing Memory Data To avoid electric shock, disconnect the test View Display MEM Using Communications 187 Clearing Memory Changing the Default Settings Selecting Setup Options Function Specific Setup Selections Factory DefaultPrecondition Option Common Setup Selections Choices Adjusting the Temperature Offset Changing the Default Settings Selecting Display Resolution 3 1/2 or 4 1/2 Digits Setting the Power Off Timeout Setting the 24-Hour Clock Setting the Line Main Frequency Returning to Factory Defaults Saving Setup Options Testing the Fuses MaintenanceIntroduction General Maintenance Replace F2 if Replace F1 if Displayed Replacing the Batteries Battery and Fuse Replacement Case of Difficulty Replacing the FusesUser-Replaceable Parts MP8 MP9 Specifications Safety and Compliances Physical Specifications Feature Summary Basic Specifications Detailed Accuracy Specifications Accuracy Function 45-1 kHz20 kHz KHz-100 kHz DC a 500.00 Ω Capacitance Diode Test MIN MAX AVG Frequency Counter Sensitivity Burden Voltage A, mA, µA Input Characteristics