NetDAQ Users Manual
Table Of Contents
- 2640A/2645A NetDAQ Users Manual
- 1. Overview
- 2. Preparing for Operation
- Introduction
- Instrument Preparation
- Unpacking and Inspecting the Instrument
- Positioning and Rack Mounting
- Connecting to a Power Source and Grounding
- Universal Input Module Connections
- Digital I/O Connections
- Alarm/Trigger I/O Connections
- External Trigger Wiring for a Group Instrument
- Controls and Indicators
- Front Panel Operating Procedures
- Power-On Options
- Displaying a Monitor Channel
- Displaying the Digital I/O Status
- Displaying the Totalizer Status
- Reviewing and Setting the Base Channel Number
- Reviewing and Setting the Line Frequency
- Reviewing and Setting the Network Type
- Reviewing and Setting the General Network Socket Port
- Reviewing and Setting the General Network IP Address
- Reviewing and Setting the Subnet Mask and Default Gateway
- Viewing the Instrument Ethernet Address
- Host Computer and Network Preparation
- Testing and Troubleshooting
- 3. Configuring NetDAQ Logger for Windows
- Introduction
- Configuring Network Communications
- Configuring the Current Setup
- Setup Files
- Configuring an Instrument
- Configuring Channels
- Configuring Mx+B Scaling From a File
- Entering an Instrument's Description
- Copying a Channels Configuration
- Default Configuration Settings
- Using Configuration Lockout
- Saving an Instrument's Configuration as a Text File
- Configuring the netdaq.ini File
- 4. Operating NetDAQ Logger for
- 5. Using Trend Link for Fluke
- Introduction
- Getting the Right Look for Your Trend Link Chart
- 6. Maintenance
- Introduction
- Self-Test Diagnostics and Error Codes
- Cleaning
- Fuse Replacement
- Performance Test
- Configuring the Performance Test Setup
- Initializing the Performance Test Setup
- Accuracy Performance Tests
- Volts DC Accuracy Test (2640A)
- Volts DC Accuracy Test (2645A)
- Volts AC Accuracy Test
- Frequency Accuracy Test
- Analog Channel Integrity Test
- Computed Channel Integrity Test
- Thermocouple Temperature Accuracy Test
- Open Thermocouple Response Test
- 2-Wire Resistance Accuracy Test (2640A)
- 2-Wire Resistance Accuracy Test (2645A)
- 4-Wire Resistance Accuracy Test (2640A)
- 4-Wire Resistance Accuracy Test (2645A)
- RTD Temperature Accuracy Test (Resistance) (2640A)
- RTD Temperature Accuracy Test (Resistance) (2645A)
- RTD Temperature Accuracy Test (DIN/IEC 751 RTD)
- Digital Input/Output Tests
- Totalizer Tests
- Master Alarm Output Test
- Trigger Input Test
- Trigger Output Test
- Calibration
- Variations in the Display
- Service
- Replacement Parts
- Appendices
- A. Specifications
- Introduction
- 2640A/2645A Combined Specifications
- 2640A Specifications
- 2640A DC Voltage Measurement Specifications
- 2640A AC Voltage Measurement Specifications
- 2640A 4-Wire Resistance Measurement Specifications
- 2640A 2-Wire Resistance Measurement Specifications
- 2640A RTD's 4-Wire, per ITS-1990 Measurement Specifications
- 2640A RTD's 2-Wire per ITS-1990 Measurement Specifications
- 2640A Thermocouple per ITS-1990 Measurement Specifications
- 2640A Frequency Measurement Specifications
- 2645A Specifications
- 2645A DC Voltage Measurement Specifications
- 2645A AC Voltage Measurement Specifications
- 2645A 4-Wire Resistance Measurement Specifications
- 2645A 2-Wire Resistance Measurement Specifications
- 2645A 4-Wire RTD per ITS-1990 Measurement Specifications
- 2645A Thermocouple per ITS-1990 Measurement Specifications
- 2645A Frequency Measurement Specifications
- B. Noise, Shielding, and Crosstalk Considerations
- C. True-RMS Measurements
- D. RTD Linearization
- E. Computed Channel Equations
- F. Data File Format
- G. Dynamic Data Exchange (DDE)
- H. Ethernet Cabling
- I. Network Considerations
- J. Error Messages & Exception Conditions
- K. Fluke Service Centers
- A. Specifications
- Index
- Instrument Parameter Record (Isolated Network)
- Instrument Parameter Record (General Network)
- General Network Parameter Record
- Host Computer General Network Parameter Record
Configuring NetDAQ Logger for Windows
Configuring an Instrument
3
3-17
• External Only
A scan is triggered immediately after the external trigger input is pulled
low (active). While the external trigger line remains low, each successive
scan is triggered after Interval 2 elapses since the start of the previous
scan.
• Alarm Only
A scan is triggered when the instrument detects an alarm condition on a
channel being used as an alarm trigger. As long as at least one alarm
trigger channel is in alarm, each successive scan is triggered after Interval
2 has elapsed. The instrument performs background scanning of alarm
trigger channels, according to Interval 5, until it detects an alarm
condition. The Alarm Checking Interval (Interval 3) is configurable in the
netdaq.ini file. Defaults are 1 second (2640A) and 0.1 second (2645A).
When the external trigger is combined with the alarm trigger, scans are
triggered at the Interval 2 rate as long as either the external trigger line is low
or at least one alarm trigger channel is in alarm.
When the interval trigger is combined with the external trigger and/or the
alarm trigger, scans are triggered at the Interval 2 rate when the conditions are
met for the external trigger and/or the alarm trigger, and at the Interval 1 rate
at all other times.
5. Select the slow reading rate for high precision, the fast reading rate for high
speed, or the medium reading for a balance of the two. The actual number of
readings per second depends on the selected functions.
6. Enable Drift Correction to have the instrument automatically correct
measurements for drift due to changes in instrument temperature and
humidity. You can disable Drift Correction to obtain a faster scan rate when
you have set the reading rate to fast, but this may reduce long-term accuracy.
7. Enable Trigger Out (TO) to have the instrument set the rear-panel TO line to
logic low for 125 µs each time a scan starts. Disable Trigger Out if you are not
using it so that the instrument may achieve maximum scanning speeds.
NetDAQ Logger automatically enables the trigger out when an instrument is
the Master of an externally wired group.
8. Enable and enter a value for the duration if you would like NetDAQ Logger to
automatically shut down logging for the instrument after the specified time
has elapsed since the start of logging.