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Fluke 8845A FE 8845A & 8846A Users Manual - Page 57

Understanding the Measurement Complete Signal, Accessing and Controlling Memory

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3 Front-Panel Operation Controlling Trigger Functions With the desired digit selected, press the soft key labeled -- to decrement the digit or ++ to increment the digit. 5. With the desired delay set, press the soft key labeled ENTER. Understanding the Measurement Complete Signal The trigger port on the Meter's back panel provides a low-true pulse at the completion of each Meter measurement. See the specifications section for more details on this signal. Accessing and Controlling Memory The Meter stores readings and meter configuration information internally and externally memory (8846A only). On the 8846A, external memory connects through the USB port on the front panel of the Meter. Optional Memory in various storage capacities is available from Fluke. See the "Options and Accessories" section in Chapter 1 for Fluke part numbers. In addition to storing and recalling readings and configurations, a memory management function is available to delete files. To access the Memory functions, press the M key. The memory menu appears over the five soft keys: RECALL SETUP, RECALL READING, STORE SETUP, STORE READINGS , and MANAGE MEMORY. Storing Readings in Memory The Meter will hold up to 9999 readings in one internal memory file. The 8846A, with external memory, will hold 999 additional readings files, each of which will store up to 5000 readings. To store readings in internal memory: 1. Press M. + 0.5993 F1 F2 F3 F4 F5 caw032.eps 2. Press the STORE READINGS soft key shown above. 3. If not already highlighted, press the INTERNAL MEMORY soft key. 4. Press the # SAMPLES soft key. 5. To adjust the number of samples, press either to select a digit. With the desired digit selected, press the soft key labeled -- to decrement the digit or ++ to increment the character. 6. With the desired number of samples set, press the ENTER soft key to return to the store readings menu. 7. Press the START soft key to initiate measurement storing. The START soft key will change to STOP which can be pressed to stop the storage process. When the requested number of samples have been stored, the soft key label changes back to START. The MEM annunciator in the display also illuminates while readings are being stored. 3-17

Section	Page
8845A/8846A Digital Multimeter Users Manual	1
LIMITED WARRANTY AND LIMITATION OF LIABILIT	2
Table of Contents	3
List of Tables	7
List of Figures	9
1. Introduction and Specifications	11
Introduction	13
Manual Set	13
About this Manual	14
Safety Information	14
General Safety Summary	14
Symbols	16
Instrument Security Procedures	16
Volatile Memory	16
Non Volatile Memory	17
Media Memory (8846A Only)	17
Accessories	17
General Specifications	19
Power	19
Dimensions	19
Display	19
Environment	19
Safety	19
EMC	19
Triggering	19
Memory	20
Math Functions	20
Electrical	20
Remote Interfaces	20
Warranty	20
Electrical Specifications	20
DC Voltage Specifications	20
Input Characteristics	20
8846A Accuracy	21
8845A Accuracy	21
Additional Errors	21
AC Voltage Specifications	21
Input Characteristics	22
8846A Accuracy	22
8845A Accuracy	23
Additional Low Frequency Errors	23
Resistance	23
Input Characteristics	24
8846A Accuracy	24
8845A Accuracy	24
Additional Ohms Errors	24
DC Current	25
Input Characteristics	25
Accuracy (8846A)	25
Accuracy (8845A)	25
Additional Current Errors	25
AC Current	26
Input Characteristics	26
8846A Accuracy	26
8845A Accuracy	27
Additional Low Frequency Errors	27
Frequency	28
8846A Accuracy	28
8845A Accuracy	28
Gate Time vs. Resolution	28
Additional Low Frequency Errors	28
Capacitance (8846A Only)	29
Temperature (8846A only)	29
Additional Temperature Errors	29
Continuity	29
Diode Test	30
Measurement Rates	30
2. Preparing the Meter for Operation	31
Introduction	33
Unpacking and Inspecting the Meter	33
Contacting Fluke	33
Storing and Shipping the Meter	33
Power Considerations	33
Selecting the Line Voltage	34
Replacing the Fuses	34
Line-Power Fuse	34
Current-Input Fuses	35
Connecting to Line Power	37
Turning Power-On	38
Adjusting the Bail	38
Installing the Meter in an Equipment Rack	38
Cleaning the Meter	39
3. Front-Panel Operation	41
Introduction	43
Controls and Indicators	43
Front-Panel Feature Descriptions	43
Display Panel	44
Rear-Panel Connectors	46
Adjusting the Meter's Range	47
Navigating the Front-Panel Menu	47
Configuring the Meter for a Measurement	47
Setting the Display Resolution	47
Setting the AC Signal Filter	48
Setting Continuity Resistance Threshold and Diode Test Parameters	48
Setting the Continuity Threshold Resistance	48
Setting the Diode Test Voltage and Current	49
Setting the Default Temperature Scale (8846A Only)	49
Enabling Automatic Input Impedance	49
Using the Analyze Functions	49
Collecting Statistics on Measurements	50
Starting the Measurement Collection	50
Reading the Min, Max, Std. Dev. and Avg. Values	50
Stopping Measurement Collection	50
Testing Using Limits	51
Setting an Offset Value	52
Using MX+B	52
Using TrendPlot	53
Using the Histogram Function	54
Controlling Trigger Functions	55
Choosing a Trigger Source	55
Auto Triggering	55
External Triggering	55
Setting the Trigger Delay	56
Setting the Number of Samples	56
Understanding the Measurement Complete Signal	57
Accessing and Controlling Memory	57
Storing Readings in Memory	57
Recalling Readings from Memory	58
Storing Meter Configuration Information	58
Recalling a Meter Configuration	59
Managing Memory	60
Controlling System-Related Operations	61
Identifying Meter Errors	61
Querying the Firmware for Revision Level	61
Adjusting Display Brightness	61
Setting the Meter's Date and Time	61
Configuring the Remote Interface	62
Checking the Meter's Calibration Date	62
Resetting the Meter's Default Settings	62
4. Making Measurements	63
Introduction	65
Selecting Function Modifiers	65
Activating the Secondary Display	65
Measuring Voltage	66
Measuring DC Voltage	66
Measuring AC Voltage	67
Measuring Frequency and Period	68
Measuring Resistance	69
Making a Two-Wire Resistance Measurement	69
Making a Four-Wire Resistance Measurement	70
Measuring Current	71
Measuring DC Current	72
Measuring AC Current	73
Measuring Capacitance (8846A only)	74
Measuring RTD Temperature (8846A only)	75
Testing Continuity	76
Checking Diodes	76
Making a Triggered Measurement	77
Setting the Trigger Mode	78
Setting a Trigger Delay	78
Setting Number of Samples per Trigger	78
Connecting an External Trigger	79
Monitoring the Measurement-Complete Signal	79
Appendices	81
A. 2X4 Test Leads	83
B. Errors	85
C. RS-232 Port Connections	89

Match case Limit results 1 per page

Front-Panel Operation

Controlling Trigger Functions

3-17

With the desired digit selected, press the soft key labeled

to decrement the digit

to increment the digit.

With the desired delay set, press the soft key labeled

ENTER

Understanding the Measurement Complete Signal

The trigger port on the Meter’s back panel provides a low-true pulse at the completion of

each Meter measurement. See the specifications section for more details on this signal.

Accessing and Controlling Memory

The Meter stores readings and meter configuration information internally and externally

memory (8846A only). On the 8846A, external memory connects through the USB port

on the front panel of the Meter. Optional Memory in various storage capacities is

available from Fluke. See the “Options and Accessories” section in Chapter 1 for Fluke

part numbers. In addition to storing and recalling readings and configurations, a memory

management function is available to delete files.

To access the Memory functions, press the

key. The memory menu appears over

the five soft keys:

RECALL SETUP

RECALL READING

STORE SETUP

STORE READINGS

, and

MANAGE MEMORY

Storing Readings in Memory

The Meter will hold up to 9999 readings in one internal memory file. The 8846A, with

external memory, will hold 999 additional readings files, each of which will store up to

5000 readings.

To store readings in internal memory:

Press

0.5993

caw032.eps

Press the

STORE

READINGS

soft key shown above.

If not already highlighted, press the

INTERNAL

MEMORY

soft key.

Press the

SAMPLES

soft key.

To adjust the number of samples, press either

<--

-->

to select a digit.

With the desired digit selected, press the soft key labeled

to decrement the digit

to increment the character.

With the desired number of samples set, press the

ENTER

soft key to return to the

store readings menu.

Press the

START

soft key to initiate measurement storing. The

START

soft key

will change to

STOP

which can be pressed to stop the storage process. When the

requested number of samples have been stored, the soft key label changes back to

START

. The MEM annunciator in the display also illuminates while readings are

being stored.