- •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
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Chapter 4 Remote Interface Reference
To Set the Baud Rate
To Set the Baud Rate
You can select one of six baud rates forRS-232 operation. The rate is set to 9600 baud when the multimeter is shipped from the factory. See also “Baud Rate Selection,” on page 93.
1Turn on the front-panel menu.
A: MEAS MENU
2Move across to the I/O MENU choice on this level.
E: I/O MENU
4
3 Move down a level and then across to the BAUD RATE command.
3: BAUD RATE
4Move down to the “parameter” level to select the baud rate.
Use the left/right arrow keys to see the baud rate choices. Choose from one of the following: 300, 600, 1200, 2400, 4800, or 9600 baud.
9600 BAUD
5Save the change and exit the menu.
The baud rate selection is stored in non-volatile memory, and does not change when power has been off or after a remote interface reset.
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Chapter 4 Remote Interface Reference
To Set the Parity
To Set the Parity
You can select the parity for RS-232 operation. The multimeter is configured for even parity with 7 data bits when shipped from the factory. See also “Parity Selection,” on page 93.
1Turn on the front-panel menu.
A: MEAS MENU
2Move across to the I/O MENU choice on this level.
E: I/O MENU
3Move down a level and then across to the PARITY command.
4: PARITY
4Move down to the “parameter” level to select the parity.
Use the left/right arrow keys to see the parity choices. Choose from one of the following: None (8 data bits),Even (7 data bits), or Odd (7 data bits). When you set parity, you are indirectly setting the number of data bits.
EVEN: 7 BITS
5Save the change and turn off the menu.
The parity selection is stored in non-volatile memory, and does not change when power has been off or after a remote interface reset.
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On/Off
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Chapter 4 Remote Interface Reference
To Select the Programming Language
To Select the Programming Language
You can select one of three languages to program the multimeter from the selected remote interface. The language is SCPI when
the multimeter is shipped from the factory. See also “Programming Language Selection,” on page 94.
1Turn on the front-panel menu.
A: MEAS MENU
2Move across to the I/O MENU choice on this level.
E: I/O MENU |
4 |
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3 Move down a level and then across to the LANGUAGE command.
5: LANGUAGE
4Move down to the “parameter” level to select the language.
Choose from one of the following: SCPI, Agilent 3478A, or Fluke 8840A.
SCPI
5Save the change and turn off the menu.
The language selection is stored in non-volatile memory, and does not change when power has been off or after a remote interface reset.
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