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Printed in U.S.A. All product names are trademarks of their respective companies. The warranty period is one year and begins on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke’s opinion,. The normal operation of some equipment (e.g. signal generators) may be subject to specific restrictions. Please observe the notices in the users manual. This Users Manual contains information, warnings and cautions. Use of this equipment in a manner not specified herein may impair the protection provided by the equipment. D-1 E Computed Channel Equations. E-1 Data File Format. F-1 G Dynamic Data Exchange (DDE). G-1 H Ethernet Cabling. H-1 Network Considerations. J-1 K Fluke Service Centers. K-1 Index. The instruments measure dc volts, ac volts, Ohms, temperature, frequency, and dc current. NetDAQ NETWORKED DATA ACQUISITION UNIT REVIEW LAST Primary, Secondary, and Annunciator Displays. Indicators and annunciators for operating mode, configuration, display, and data measurements. Indicates the Host Computer and the Instrument are communicating on the network, i.e., the instrument is being operated remotely. SCAN (Scanning) Annunciator. Indicates the instrument is scanning. REM SCAN m Annunciator. Indicates the multiplier for the reading is.001 (milli). Connects mainframe to ground. Power Switch. Applies power to the instrument (ac or dc operation).External signal conditioning for the analog inputs is not necessary. The host computer configures all analog channels using NetDAQ Logger. Computed Channels In addition to the 20 analog channels, the instrument provides an additional 10 computed channels (21 to 30) by processing analog channels and other computed channels.
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An alarm condition occurs when a measurement falls below a low alarm value or rises above a high alarm value.To prevent switch contact “bounce” from triggering false readings, select the Totalizer Debounce feature. This TTL output interfaces with external equipment such as warning lights, alarms, automatic shutdowns, and paging systems. Real-Time Trend Plotting. Trend Link for Fluke (optional) lets you view real- time or historical trends in your collected data. It compares data from multiple. NetDAQ Logger supports up to 20 instruments for operation. You cannot operate an instrument from more than one host computer at a time. Isolated Networks An isolated network consists of only NetDAQ instruments and host computers. The advantages include simplified setup, faster network operation, and freedom from general network problems. The Master controls scanning operations, including the scan intervals and method of scan triggering. You can create only one group instrument. Scanning and Logging When a scan is triggered, the instrument scans the 20 analog channels and calculates the 10 computed channels. A 2620A-100 Instrument Connector Set comes with each instrument. You can wire additional connector sets to allow quick interfacing to multiple wiring setups. Setting up your system requires the following steps (described in detail later in this chapter), performed in the order shown: Instrument Preparation Unpacking and setting up the NetDAQ instrument. Fluke guarantees equipment specifications only for 50 Hz and 60 Hz operation. Refer to Figure 2-2 and the descriptions below for making power connections. Fluke warrants the instrument to meet specifications only at 50 Hz and 60 Hz operation. Power consumption is a nominal 15 watts. Power consumption is a nominal 6 watts.Resistance and RTD measurements use two terminals (one channel) or four terminals (two channels). The 4-wire connection provides increased accuracy over the 2-wire connection.
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SOURCE (4-WIRE) SENSE (4-WIRE) Use H and L terminals for two channels on rear panel input module. Connections for Channel 8 are shown here with Channel 18 providing the additional two connections. Use the Trigger Output to trigger other instruments via their Trigger Input connection and to interface with external equipment. Table 2-1 summarizes the front panel control functions.Table 2-2 summarizes the front panel indicator functions. REVIEW LAST Primary Display Table 2-2. Annunciator Display Descriptions Annunciator REVIEW Displays while reviewing the instrument parameters. The power switch controls both ac and dc power inputs. Rear Panel Indicators The rear panel has three LED indicators for the Ethernet adapter (Figure 2-11). Red LED blinks for instrument transmitting Ethernet data. The instrument communication parameters are the same as when the instrument was last turned off. Configuration-Reset Power-On Hold the front panel COMM key down, and then turn the power switch on. See Figure 2-13 for examples. Channel Display When you press the MON key, the first monitor channel displayed is the channel most recently monitored. The instrument updates the Totalizer display once per second. (See Figure 2-15 for examples.) To clear the Totalizer count, cycle the instrument power. You can also configure NetDAQ Logger to clear the Totalizer count when it starts logging. The BCN identifies the instrument. The BCN is also the first two digits of the Global Channel Number (GCN), which uniquely identifies each instrument channel. Line frequency selection allows the instrument to optimize internal circuitry for maximum precision. (See Figure 2-20 for examples.) Line Frequency Choices Select 50 Hz or 60 Hz as the frequency of the primary power when an ac source powers the instrument. Perform the procedure in Figure 2-23 to review or set the network type to general. An isolated network consists of only NetDAQ instruments and one or more host computers.
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You will need to enter an IP address, socket port, and possibly a subnet mask and gateway address into each instrument. Get this information from your network administrator. The default is 04369. In order to communicate with each other, a host computer and an instrument must use the same socket port number. (See Figure 2-25 for examples.) General Network Socket Port Enter the Socket Port supplied by your network administrator. Get this information from your network administrator. The subnet mask, when masked with the instrument IP address, determines what the network number is. For example, if the IP address is 129.196.180.93 and the subnet mask is 255.255.255.0, the network number is 129.196.180.0. Press the ENTER key. For example, 00:80:40:12:34:56. The first 6 hexadecimal digits represent a manufacturer, for example, 00:80:40 represents Fluke Corporation. The remaining digits are a sequential number assigned during manufacturing. Ethernet addresses are always unique; they are never altered, reused, or duplicated. Installing Host Computer Ethernet Adapter Skip this section if you have an Ethernet adapter installed on your computer. Since the installation procedures for Ethernet adapters change frequently and without notice, you must follow the instructions supplied with your particular Ethernet adapter. If your site is already wired, you will probably use the wire in place. If your site is not wired, and you are connecting your instrument directly to your host computer, it is easiest to use the coaxial cable supplied with your NetDAQ instrument. Host Computer 1 Host Computer 2 Figure 2-31. Interconnection Using 10Base2 (Coaxial) Wiring 2-46 Terminator Ground Wire 50-Ohm Terminator Connect to 10Base2 Coax Port BNC “T” or “Y” (Typical) 10Base2 Coaxial Cable (50-Ohm) Host Computer 1 Host Computer 2 RJ-45 10BaseT Outlets (Typical) Patch Cord RJ-45 Interface (Typical) Figure 2-33.
Interconnection Using 10BaseT (Twisted-Pair) Wiring Host Computer and Network Preparation Connect to RJ-45 10BaseT Port 10BaseT Twisted-Pair. This section discusses how to set your host computer networking parameters after you install your adapter and networking software. I f you plan to install NetDAQ Logger for general network operation, and you are just now enabling networking, you must set the host computer’s IP address, subnet mask, and possibly its default gateway IP address. The default name of the program folder or program group is Fluke NetDAQ Logger. You can select or type a different name. Click Next. 2-52 2-45. If you want to change the setup, click Back to go to the appropriate screen and make the changes. Click Next and check the setup again. If it is correct, click Next to begin file transfer. The default name of the program folder or program group is Fluke NetDAQ Logger. You can select or type a different name. Click Next. 8. Check the setup. If the setup is correct, click Next to begin file transfer. Installing Trend Link for Fluke (Optional) The Trend Link setup program automatically determines whether to install the 32-bit (for Windows 95 and Windows NT) or 16-bit version of the software. To install Trend Link, complete the following procedure: 1. Select the instrument model number and enter the instrument BCN. On a general network, you must enter the instrument IP address which you previously recorded inside the back cover of this manual. Table 2-5 is a summary of how to use the Ethernet LED indicators on the instrument to identify network problems. The host computer cannot establish network communication. Unable to initialize The host computer Winsock.If it still fails, then either the host computer Ethernet adapter is not working or the instrument is defective. Unable to verify communications with an instrument. General Protection Faults. Changed instruments on the network and the new instrument do not respond. Table 2-6.
This chapter provides instructions on managing configuration information for NetDAQ Logger. Chapter 4 provides details on operating NetDAQ Logger: starting and stopping the instruments, managing data files, and optimizing performance. This involves identifying the instruments by their BCN numbers and, on a general network, their IP addresses. Network configuration data is not saved as part of the setup files but is its own separate file, ccf.cfg, maintained by NetDAQ Logger. The dialog box lets you view the instruments currently on the network, modify them, and add or delete instruments. For a general network, the IP address appears after the instrument model number. 4. If you are on a general network, you may need to change the socket port if a conflict occurs with other network operations. Any instruments you delete in this procedure will no longer be accessible to any setup file. Do not use this procedure simply to remove an instrument icon from the Icon Bar. This collection of information is called the current setup. NetDAQ Logger allows you to save the current setup to a file and open previously saved setup files. A message appears warning you that the instrument’s configuration will be lost. If you choose to delete the icon, it will disappear from the Icon Bar in the Main Window. Designating Instruments as Group or Asynchronous You can designate instruments as grouped or asynchronous (standalone). NetDAQ Logger configures the Slaves for External Trigger so they will respond to the trigger signal from the Master. Unwired Group If you cannot wire the grouped instrument, select only the Interval Trigger for the Master. You can open the setup file later to reestablish the saved setup. Using setup files, you can create any number of setups in advance and use them when applicable. You can set up your system so that you can activate NetDAQ Logger by opening a setup file. Before you open a setup file, you must stop logging on all instruments.
Use any of the following methods to open a setup file.This channel will automatically be displayed on the instrument’s front panel when logging is started. 3. 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. The Channels Configuration Dialog Box All channels configuration procedures start with the Channels Configuration dialog box shown in Figure 3-4. To configure analog channel functions, complete the following procedure: 1. Select an analog channel in the Channels Configuration dialog box. 2. To select computed channel functions, complete the following procedure: 1. Select a computed channel in the Channels Configuration dialog box. 2. Click Function to open the Computed Function dialog box. 3. Click OK in the error message box. If possible, NetDAQ Logger highlights the location of the error in the equation. Change the equation as necessary and click OK to return to the Channels Configuration dialog box. An alarm condition occurs when a measurement falls below a low alarm value (LO alarm) or rises above a high alarm value (HI alarm). NetDAQ Logger records all alarm conditions in the data file. The decimal point character corresponds to your Windows International settings. For example, if you set up three instruments with identical channel configurations, you can configure one instrument and then copy the channels configuration to the other two instruments. This includes starting and stopping logging, viewing and storing your data, and optimizing system performance. Starting and Stopping Logging You can start or stop logging for an individual instrument, a group instrument (by starting or stopping the Master), or all instruments. If the menu command and button are dimmed, the instrument is not logging, or it is a Slave and you must stop the Master.
Otherwise, the totalizer value in the instrument will not be cleared.The maximum entry is 999 hours, 99 minutes, 99 seconds (999:99:99). 4. Click OK to return to the Main Window. Real-Time Displays The Real-Time displays let you monitor data as it is being collected. The following displays are available: Logging Status displays the status of data collection during real scanning or simulated scanning. See Chapter 5 of this manual for more information on Trend Link. Dynamic Data Exchange (DDE) links measurement data to other applications such as a spreadsheet, with the measurements appearing in other applications as they are being collected. The Spy Window The Spy Window displays up-to-date measurements whether or not instruments are scanning. Double-click in the Spy window to return to the Spy Channel Selection dialog box. ds060s.eps 4-10. Quick Plot samples the incoming scan data at a specified interval and displays a graphical trend of the data. For a more detailed view of your data, use the Trend Link application. You can record data into Fast Binary and then convert it into the Trend Link format. When using the Trend Link format, you may specify a deadband value for each channel. For the Fast Binary or ASCII (CSV) format, select Append to File or Overwrite File. This file mode determines what happens when logging starts if a data file of the same name exists. Enter text characters (79 maximum) into the File Comment box. The data file may be automatically rolled over when it reaches a specified size, when a time interval elapses from the last rollover, or at a particular time each day. To safeguard your data when recording in the Trend Link format, you must perform a rollover or stop logging data before your disk completely fills up. Use the batch definition to tell NetDAQ Logger when to mark the start and stop points of batches: Entire logging session.
NetDAQ Logger performs the following conversions: Binary to ASCII ASCII to Text (timestamp conversion) Binary to Trend Link Complete the following procedure to perform one of these conversions. This conversion does not modify or destroy the original file, but creates an additional file in the new format. The procedures in this section describe the options for optimizing performance. Optimizing Performance for Speed To optimize the data collection rate of your system, you can alter the parameters that affect the instrument’s scanning rate, the data put through from the instrument to the data file, or the speed of the network. The following suggestions are: Avoid using the Quick Plot, Spy, Readings Table, or Logging Status windows. Avoid using the Trend Link window in real time. Close any other applications that are open. This chapter supports Trend Link operation with a series of procedures to use in conjunction with NetDAQ Logger. Refer to the Trend Link for Fluke Reference Manual for complete information.Use the scroll bar at the bottom of the chart to display the measurement area of interest. For example, enter c:\Program Files\Fluke\netdaq\testdata.csv. Enter the desired title and click OK. The example below shows the data.set file exported in Column Heading Format as file: c:\Program Files\Fluke\netdaq\ data.set\data.csv with a sampling interval of 0.5 second. Click OK. 5-10 ds128s.bmp. See the Trend Link for Fluke Reference Manual for more information on menu items and other Trend Link capabilities. 5-12 5-15. Refer to the Trend Link for Fluke Reference Manual for complete menu information. The Curve Status display is the window at the bottom of the chart containing the parameter information of the curves. Toggle Curve Status on and off with the Curve Status Window button on the Control Bar. You can customize various attributes of each curve on the chart. For example, you can change the color, add a fixed range, and position one curve on top of another.
Click OK to open the Curve Parameters box (below). (You can also open this dialog box directly by double-clicking the Curve icon.) Otherwise, a band without numbers will appear. Curve Type Select the type of curve: normal, highlight, shaded, or SPC (Statistical Processing Control).Grid Color: Choose the grid color. Calculate Interval:Select this option to enter the number of vertical grid lines to display. Pixel Width: Select this option to enter the distance between vertical grid lines in pixels. Use scale tickmarks: If you select this option, horizontal grid lines draw to match the tickmark labels on the band bars. Enter the chart title name in the text box, for example, station one. Click OK. 2. Observe that the entered text appears at the top of the chart in the Title Bar. Using the Note System Complete the following procedure to add a text note to a curve. The X and Y Offsets specify the position of the upper- left corner of the printed page, and the Width and Height determine the size of the printed chart. Otherwise, package the instrument securely (using the original container, if available), and mail it to the nearest Fluke Service Center. Include a description of the problem. Fluke assumes no responsibility for damage in transit. To prevent damage, never apply solvents to the instrument housing. Wipe the instrument with a cloth lightly dampened with water or mild detergent. Do not use aromatic hydrocarbons, chlorinated solvents, or methanol-based fluids. To perform these tests, you will need a Fluke 5700A Multifunction Calibrator and several other pieces of equipment meeting the minimum specifications given in Table 6-2. Testing begins with the instrument and host computer unpowered. This assures that at power-up self-tests are completed successfully, the correct host computer Ethernet port is activated, the host computer configuration is accurately reflected, and other background operations are completed. The message Connection Successful.
Do not begin this test until the instrument has been temperature stabilized for a minimum of 30 minutes. Do not use the instrument front panel monitor function for performance testing; use the higher resolution Spy window at the host computer, as specified in procedures. Change the channel 1 range as required (see Step 1). Volts DC Range 90 mV Short Circuit (Zero) 90 mV 90 mV. Change the channel 1 range as required (see Step 1).Change the channel 1 range as required (see Step 1). Volts AC Range 300 mV 300 mV 300 mV 300 mV. Measurement accuracy applies to all channels, not just the channel used for the test. (The 4-wire resistance accuracy test is more rigorous and you may wish to skip this step and continue to “4-Wire Resistance Accuracy Test.”) 1. You must add any additional lead wire resistance present in your setup to the resistance values given in this table. Change the channel 1 range as required (see Step 2). Resistance Range Short Circuit (Zero) Short Circuit (Zero) 30 k. Allow 20 minutes for thermal stabilization.The instrument must be scanning to set the DIO lines. 10. Adjust the signal generator for an output of 1.5V rms sine wave at 10 Hz. 3. Open Spy Window Select the Spy command from the Utilities menu. Select 01TOTAL. Be sure Interval Trigger and Alarm Trigger are not enabled. In the Instrument Configuration dialog box, verify the Trigger Out box is checked.If you have activated calibration and wish to exit, press CAL ENABLE until the CAL annunciator is removed from the display (or turn the power off). Adding Calibration to the Utilities Menu To add calibration to the Utilities menu, complete the following procedure: 1. See the Service Manual (PN 942615) for the calibration procedure. RS-232 Port Click the scroll arrow to list the RS-232 port choices: COM1 to COM4. If the problem cannot be remedied, send the instrument, postage paid, to the nearest Fluke Service Center. A list of Service 6-34 key and then apply power.
Be sure to pack the instrument securely; use the original container if available. Fluke assumes no responsibility for damage in transit. For application or operation assistance or information on Fluke products, telephone: 1-800-44-FLUKE (1-800-443-5853) in USA and Canada. Defective units may be returned to either Fluke or to the option manufacturer for repair or replacement. The original equipment manufacturer may offer warranties beyond the warranty supplied by Fluke. C-1 RTD Linearization. D-1 Computed Channel Equations. F-1 Dynamic Data Exchange (DDE). G-1 Ethernet Cabling. J-1 Fluke Service Centers. K-1 Appendices Title Page. The first section contains the combined specifications that apply equally to both the 2640A and 2645A instruments. The second section contains specifications that apply only to the 2640A instrument. The third section contains specifications that apply only to the 2645A instrument. The 4-wire measurements use 2 input channels a decade apart, e.g., channels 4 and 14. Table A-15. 2640A 4-Wire Resistance Temperature Coefficient Specification Temperature Coefficient Accuracy at -20 C. The topics include static versus dynamic measurement, noise and shielding, and how to minimize crosstalk effects Static Versus Dynamic Measurements Some signals change value slowly. Crosstalk from a VAC or frequency signal on a 2645A channel to an adjacent channel using the Slow reading rate is as shown in Table B-1: Table B-1. In physical terms, the rms (root-mean-square) value of an waveform is the equivalent dc value that causes the same amount of heat to be dissipated in a resistor. True rms measurement greatly implies the analysis of complex ac signals. However, consider the 2V (peak-to- peak) square wave. Both types of measurement correctly display the dc component (0V), but the NetDAQ instrument also correctly measures the ac component (1.0000V). The average-responding device measures 1.11V, which amounts to an 11 error.
Average-responding measurement devices have been in use for a long time;. Fixed-385 RTD The Fixed-385 RTD linearization uses segmented polynomials to approximate the Callendar Van-Dusen equation for a 385 RTD.In addition to R specified via NetDAQ Logger.The Custom-385 linearization will compensate for the change in, but errors will be introduced due to the difference in the and coefficients of the RTD and the fixed coefficients. Constants are passed to the instrument as single precision (4 byte) floating point numbers which have a maximum magnitude of 3.402823E38. The ASCII format is compatible with data analysis and management tools running simultaneously in other computers on a network. A conversion utility, Binary to ASCII Conversion (Utilities menu) is provided for converting data files recorded in Fast Binary (BIN) to ASCII (CSV). Data files from a group of instruments contain the time tag from the Master instrument and data from all the instruments in the group. Each scan record consists of the instrument time tag and a comma separated list of channel readings (including the DIO word, totalizer, alarm1 and alarm2). For example, with a DDE connection, data collected by NetDAQ Logger can be displayed in a spreadsheet as it is being collected from the instruments. Click on Chart and then OK. UTP cable configurations are summarized in Figure H- UTP Cables There are two types of UTP cables: patch cord cables and direct connection cables. Patch cord cables connect an instrument or host computer to an existing 10BaseT hub, usually via a network outlet. This was OK with limited channel measurement rates,. Now, the increased processing capability of affordable host computers, increased channel measurement rates, and pressure to place the instruments close to the signal source have made support of high-speed, long distance communication techniques necessary. If so, what’s the IP address of my default gateway or router device? 3. Will all the routers route IP packets? 4.
What are my domain and host names (optional). The minimum information you need to get is the IP Addresses for the PC and the instruments. Fluke supplies a terminator with each NetDAQ instrument and wiring kit. A hub is a device that allows communication among multiple 10BaseT network hosts and allows these hosts to communicate with other Ethernet wiring. So, unless you’re doing low- level analysis of network traffic, you never need to deal with Frame information. For any protocol, the Packet consists of a destination address, a source address, some protocol type information, a message length field, and error detection information. The network ID must be unique among all network subnets within a connected Internet. It identifies the network subnet to which a host is connected. The host ID must be unique among hosts within a network subnet and identifies the host within the subnet. However, if you want to attach a. This frame contains a request for the host with the unknown IP address to return a frame to the ARP requester. This response frame contains the Ethernet address of the sourcing host, and this information is then added to the address correspondence table. As a result, only one package of protocol software can use a packet driver at any one time.The setup information for ODI drivers is contained in a file called net.cfg that must be in the Novell directory (the driver must be there too). This process is generally referred to as routing the packet, and devices that do this are also referred to as Routers or Gateways. In many modern networks, the use of subnet masking and the default gateway is not necessary. With the isolated network operation, you are limited to using the 198.178.246.0 subnet (Class C subnet assigned to the Fluke Corporation) for both the PC and instruments. During installation of the Newt software, be careful to enter the IRQ and port address that matches the network card attached to the NetDAQ instruments. I-15.
If you’re using two network cards, and as a result, two drivers, you must select two different soft interrupt levels for the drivers. For example, Packet drivers (used with Trumpet) usually use soft interrupt level 60 (hex). Check all network wiring. Make sure that 10Base2 terminators are placed at the two open ends of the coax. Make sure that there is no more than one terminator on each end (some network repeaters, bridges, and routers have termination built into the unit.) In a 10Base2 network, make sure that the collision indicator on the. If possible, increase the scan interval. Use the Fast Binary file format rather than CSV or Trend Link formats. Make sure that there are few or no other Windows applications running at the same time as NetDAQ Logger. In these rare cases, you must force use of the uni-directional communication on this interface. See “Installing the Host Computer Ethernet Adapter” before proceeding with the Newt software installation. Instrument Preparation Each NetDAQ instrument should be connected to an ac outlet or dc source with a proper ground. You must configure Vines to use the NDIS driver in order to install the Newt software. This is done via the Banyan PCCONFIG utility supplied with Vines. Click Continue. e. Acknowledge the Setup is Complete. Accept the Ethernet defaults. Click OK. If you are already using Novell NetWare Client software, Banyan Vines, Windows for Workgroups (with networking enabled) or another package that already has installed an ODI or NDIS driver, the following Hardware Selection dialog box will not appear and the existing driver is used. Enter the domain name assigned by your network administrator for this host computer. Click OK. 9. Enter the path to the NDIS driver. It is usually found in the NDIS directory of the diskette supplied with your Ethernet adapter. Network wiring scheme using unshielded, twisted pair cable (10 MHz, Baseband, Twisted Pair). API Application Programming Interface.