- •Contents
- •In This Book
- •To Prepare the Multimeter for Use
- •If the Multimeter Does Not Turn On
- •To Adjust the Carrying Handle
- •To Measure Voltage
- •To Measure Resistance
- •To Measure Current
- •To Measure Frequency (or Period)
- •To Check Diodes
- •To Select a Range
- •To Set the Resolution
- •Front-Panel Display Formats
- •To Rack Mount the Multimeter
- •Front-Panel Menu Reference
- •A Front-Panel Menu Tutorial
- •Messages Displayed During Menu Use
- •Menu Example 1
- •Menu Example 2
- •Menu Example 3
- •To Turn Off the Comma Separator
- •To Make Null (Relative) Measurements
- •To Store Minimum and Maximum Readings
- •To Make dB Measurements
- •To Make dBm Measurements
- •To Trigger the Multimeter
- •To Use Reading Hold
- •To Make dcv:dcv Ratio Measurements
- •To Use Reading Memory
- •Measurement Configuration
- •Math Operations
- •Triggering
- •System-Related Operations
- •Remote Interface Configuration
- •Calibration Overview
- •Operator Maintenance
- •Power-On and Reset State
- •Command Summary
- •Simplified Programming Overview
- •Using the MEASure? Command
- •Using the CONFigure Command
- •Using the range and resolution Parameters
- •Using the READ? Command
- •Using the INITiate and FETCh? Commands
- •The MEASure? and CONFigure Commands
- •Measurement Configuration Commands
- •Math Operation Commands
- •Triggering
- •Agilent 34401A Triggering System
- •The Wait-for-Trigger State
- •Triggering Commands
- •System-Related Commands
- •The SCPI Status Model
- •What is an Event Register?
- •What is an Enable Register?
- •SCPI Status System
- •The Status Byte
- •Using *STB? to Read the Status Byte
- •To Interrupt Your Bus Controller Using SRQ
- •To Determine When a Command Sequence is Completed
- •How to Use the Message Available Bit (MAV)
- •Using *OPC to Signal When Data is in the Output Buffer
- •The Standard Event Register
- •The Questionable Data Register
- •Status Reporting Commands
- •Calibration Commands
- •RS-232 Interface Configuration
- •RS-232 Configuration Overview
- •RS-232 Data Frame Format
- •Connection to a Computer or Terminal
- •RS-232 Troubleshooting
- •RS-232 Interface Commands
- •An Introduction to the SCPI Language
- •Command Format Used in This Manual
- •Command Separators
- •Using the MIN and MAX Parameters
- •Querying Parameter Settings
- •SCPI Command Terminators
- •IEEE-488.2 Common Commands
- •SCPI Parameter Types
- •Numeric Parameters
- •Discrete Parameters
- •Boolean Parameters
- •String Parameters
- •Output Data Formats
- •Using Device Clear to Halt Measurements
- •TALK ONLY for Printers
- •To Set the GPIB Address
- •To Select the Remote Interface
- •To Set the Baud Rate
- •To Set the Parity
- •To Select the Programming Language
- •Alternate Programming Language Compatibility
- •Agilent 3478A Language Setting
- •Fluke 8840A/8842A Language Setting
- •SCPI Compliance Information
- •IEEE-488 Compliance Information
- •Execution Errors
- •Self-Test errors
- •Calibration Errors
- •Using MEASure? for a Single Measurement
- •Using CONFigure with a Math Operation
- •Using the Status Registers
- •RS-232 Operation Using QuickBASIC
- •RS-232 Operation Using Turbo C
- •Thermal EMF Errors
- •Loading Errors (dc volts)
- •Leakage Current Errors
- •Rejecting Power-Line Noise Voltages
- •Common Mode Rejection (CMR)
- •Noise Caused by Ground Loops
- •Resistance Measurements
- •4-Wire Ohms Measurements
- •Removing Test Lead Resistance Errors
- •Power Dissipation Effects
- •Settling Time Effects
- •Errors in High Resistance Measurements
- •DC Current Measurement Errors
- •True RMS AC Measurements
- •Crest Factor Errors (non-sinusoidal inputs)
- •Loading Errors (ac volts)
- •Measurements Below Full Scale
- •High-Voltage Self-Heating Errors
- •Temperature Coefficient and Overload Errors
- •Low-Level Measurement Errors
- •Common Mode Errors
- •AC Current Measurement Errors
- •Frequency and Period Measurement Errors
- •Making High-Speed DC and Resistance Measurements
- •Making High-Speed AC Measurements
- •DC Characteristics
- •AC Characteristics
- •Frequency and Period Characteristics
- •General Information
- •Product Dimensions
- •To Calculate Total Measurement Error
- •Total Measurement Error
- •Interpreting Multimeter Specifications
- •Number of Digits and Overrange
- •Sensitivity
- •Resolution
- •Accuracy
- •Transfer Accuracy
- •24-Hour Accuracy
- •90-Day and 1-Year Accuracy
- •Temperature Coefficients
- •Configuring for Highest Accuracy Measurements
- •DC Voltage, DC Current, and Resistance Measurements
- •AC Voltage and AC Current Measurements
- •Frequency and Period Measurements
- •Index
Single
On/Off
Shift 
<
> 
> 
>
Chapter 2 Front-Panel Menu Operation
To Use Reading Memory
To Use Reading Memory
The multimeter can store up to 512 readings in internal memory.
The following steps demonstrate how to store readings and retrieve them.
1Select the function.
Select any measurement function. You can also select Null, Min–Max, dB, dBm, or limit test. You can change the function at any time during reading memory.
2Select the single trigger mode.
Notice that the Trig annunciator turns on. When reading memory is enabled, readings are stored when you trigger the multimeter.
For this example, single triggering is used to store readings. You can also use auto triggering or reading hold.
3Turn on the menu.
A: MEAS MENU
4Move across to the SYS MENU choice on this level.
D: SYS MENU
5Move down to a level to the RDGS STORE command.
1: RDGS STORE
46
>
Auto/Man
ENTER
Single
Single
Single
Recall
Shift 
>
Chapter 2 Front-Panel Menu Operation
To Use Reading Memory
6 Move down a level and then across to the “ON” choice.
ON
2
7Save the change and exit the menu.
Notice that the Mem (memory) annunciator turns on to indicate that the multimeter is ready to store readings. Up to 512 readings can be stored in first-in-first-out (FIFO) order. When memory is full, the Mem annunciator will turn off.
Readings are preserved until you re-enable reading memory at another time, turn off the power, or perform a remote interface reset.
8Trigger the multimeter three times.
This stores three readings in memory.
9Use menu recall to retrieve the stored readings.
This takes you to the “SAVED RDGS” command in the SYS MENU.
2: SAVED RDGS
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Chapter 2 Front-Panel Menu Operation
To Use Reading Memory
10 Move down a level to view the first stored reading.
Reading memory is automatically turned off when you go to the “parameter” level in the menu.
The first reading displayed is the first reading that was stored (FIFO). If no readings are stored in memory, “EMPTY” is displayed. The stored
readings are displayed with their units ( , m, k, etc.) when appropriate. For example:
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Turn off the menu. |
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EXITING MENU
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3
3
Features and
Functions
Features and Functions
You will find that this chapter makes it easy to look up all the details about a particular feature of the multimeter. Whether you are operating the multimeter from the front panel or from the remote interface, this chapter will be useful. This chapter is divided into the following sections:
•Measurement Configuration, starting on page 51
•Math Operations, starting on page 63
•Triggering, starting on page 71
•System-Related Operations, starting on page 84
•Remote Interface Configuration, starting on page 91
•Calibration Overview, starting on page 95
•Operator Maintenance, starting on page 100
•Power-On and Reset State, on page 101
Some knowledge of the front-panel menu will be helpful before you read this chapter. If you have not already read chapter 2, “Front-Panel Menu Operation,” starting on page 25, you may want to read it now. Chapter 4, “Remote Interface Reference,” starting on page 103, lists the syntax for the SCPI commands available to program the multimeter.
Throughout this manual, the following conventions are used for SCPI command syntax for remote interface programming.
•Square brackets ( [ ] ) indicate optional keywords or parameters.
•Braces ( { } ) enclose parameters within a command string.
•Triangle brackets ( < > ) indicate that you must substitute a value for the enclosed parameter.
•A vertical bar ( | ) separates multiple parameter choices.
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