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Related Manuals for FreeWave Spread Spectrum
Summary of Contents for FreeWave Spread Spectrum
- Page 1 FreeWave Spread Spectrum Wireless Data Transceiver User Manual FreeWave Technologies, Inc. 1880 South Flatiron Court Boulder, CO 80301 (303) 444-3862 (303) 786-9948 www.freewave.com...
- Page 3 FreeWave Spread Spectrum Wireless Data Transceiver User Manual FreeWave Technologies, Inc. 1880 South Flatiron Court Boulder, CO 80301 (303) 444-3862 (303) 786-9948 www.freewave.com...
- Page 5 Other product names mentioned in this manual may be copyrights, trademarks, or registered trademarks of their respective companies and are hereby acknowledged. The FreeWave Wireless Data Transceiver is made in the United States of America. Printed in the United States of America.
- Page 6 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f...
- Page 7 Consult the dealer or an experienced radio/TV technician for help. Note: Whenever any FreeWave Technologies module is placed inside an enclosure a label must be placed on the outside of that enclosure which includes the module's FCC ID.
- Page 8 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f...
- Page 9 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f This product is licensed by The United States. Diversion contrary to U.S. law is prohibited. Shipment or re-export of this product outside of The United States may require authorization by the U.S.
- Page 10 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f...
- Page 11 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Model# DGRO9RFS is suitable for use in Class 1, Division 2, Groups A, B, C, and D or non- hazardous locations only.
- Page 12 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f viii...
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Page 13: Table Of Contents
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Table of Contents QUICK START....................1 TUNING TRANSCEIVER PERFORMANCE............2 OPERATION MODE SELECTIONS..............5 (0) P ...............5 OINT OINT ASTER (1) P ..............5 OINT OINT LAVE (2) P ............5... - Page 14 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f (6) S ...............31 LAVE ECURITY (7) RTS CTS................31 (8) R ..............32 ETRY (9) L ..............32 OWPOWER RADIO STATISTICS..................34 TRANSCEIVER LOCATION ................36 FRONT PANEL LEDS ..................37 USING AN EXTERNAL ANTENNA..............39 ..............41...
- Page 15 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f List of Tables Table 1: Setup Menu Terminal Settings ................2 Table 2: AT Script File Commands ..................7 Table 3: Subnet ID Settings....................16 Table 4: Data Word Length and Parity Selections...............19 Table 5: Frequency Bands, 900 MHz..................25...
- Page 16 900 MHz and 2.4 GHz V4.2f Table of Figures Figure 1: Initial Menu......................3 Figure 2: FreeWave Operation Mode Menu................. 4 Figure 3: Multipoint Parameters..................11 Figure 4: Multipoint Subnet Diagram...................16 Figure 5: Baud Rate, Word Length, & Modbus..............18 Figure 6: Call Book Menu ....................21 Figure 7: Radio Parameters Menu..................23...
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Page 17: Quick Start
FreeWave will potentially operate in virtually any environment where RS232 data communications occur. The transceivers function as a 9 pin null modem cable. If FreeWave is to be used in an application where a null modem cable is used (such as communication between two computers), then FreeWave can be connected directly. -
Page 18: Tuning Transceiver Performance
900 MHz and 2.4 GHz V4.2f Tuning Transceiver Performance FreeWave allows you to tune several parameters to optimize its performance for your particular application. All adjustments are done through the FreeWave setup program, a user interface which eliminates the need for setup diskettes, DIP switch settings, or custom software. -
Page 19: Figure 1: Initial Menu
900 MHz and 2.4 GHz V4.2f When the setup program is invoked all three LEDs on the FreeWave front panel will turn green and will remain green for the entire time the Transceiver is in setup mode. The main menu screen for the setup program is shown in Figure 1:... -
Page 20: Figure 2: Freewave Operation Mode Menu
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Figure 2: FreeWave Operation Mode Menu... -
Page 21: Operation Mode Selections
LEDs will be solid red. (1) Point-to-Point Slave When set up as a slave a FreeWave Transceiver will communicate with any master in its call book, either directly or through one or two repeaters. When functioning as a slave, the Entry to Call feature in the Transceiver's call book (Figure 5) is not operational. -
Page 22: Point-To-Point Repeater
V4.2f (5) Point-to-Point Repeater FreeWave allows the use of up to two repeaters in a communications link, significantly extending the operating range. When designated as a repeater a Transceiver behaves as a pass-through link. All settings for the call book, baud rate, and radio transmission characteristics are disabled. -
Page 23: Table 2: At Script File Commands
RF Data Rate ATXP_ RF Transmit Power ATDT_ Position in Call Book to Call ATD_ Allows specific FreeWave Serial Number to be entered to call ATXC_ Used in conjunction with the ATD command, instructs transceivers which repeater path to follow... -
Page 24: Point-To-Multipoint Repeater
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Using Mode 6 to call a transceiver not listed in the Call Book Mode 6 will accept the command ATD####### where ####### is any arbitrary modem serial number such as 5551234. Upon receipt of this command the modem will call that modem even though the number is not in the sending modem’s Call Book. -
Page 25: Multipoint Operation
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Multipoint Operation Theory of Operation In a Multipoint system a transceiver designated as a master is able to simultaneously be in communication with numerous slaves. In its simplest form,... -
Page 26: Number Repeaters
Multipoint network (master, slaves, and repeater(s)). (1) Master Packet Repeat In point-to-point operation the FreeWave transceivers acknowledge every data packet transmitted. In a Multipoint network, transmissions from a master to the slaves are not acknowledged by the slaves. This is to prevent system overload. -
Page 27: Master Packet Repeat In Multipoint Systems With Repeaters
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Master Packet Repeat in Multipoint Systems with Repeaters The Master Packet Repeat parameter must also be set in multipoint repeaters when they are used in a multipoint system. In a multipoint system a repeater looks like a master to a slave. -
Page 28: Max Slave Retry
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f (2) Max Slave Retry (3) Retry Odds While packets transmitted from the master to the slaves in a Multipoint network are not acknowledged, packets transmitted from slaves to the master are. -
Page 29: Network Id
(8) MultiMaster Synch (8) MultiMaster Synch is reserved for applications (either point to point or multipoint) with concentrations of Master units where it is necessary to reduce interference between the Masters. Please contact FreeWave Technologies for more information. (9) 1 PPS Enable/Delay The 1 PPS Enable/Delay option allows the radio network to propagate a GPS 1PPS signal from the master transceiver to all slaves in a multipoint network. -
Page 30: (A) Slave/Repeater
A second computer to run the diagnostics software A diagnostics cable, available through FreeWave Technologies Diagnostics software, also available through FreeWave Technologies Please contact FreeWave if you are interested in using the diagnostics feature in your network. (C) Subnet ID... - Page 31 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Note: The Subnet ID settings are irrelevant for the Master. Note: The Master always transmits on Subnet ID=0, regardless of the setting. To force communications directly through the Master the Slave or Repeater's Rcv SubnetID must be set to 0.
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Page 32: Table 3: Subnet Id Settings
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f The drawing below depicts a Multipoint Network in which the Subnet ID is used to force communications along specific paths. In this example Repeater1 must talk directly to the Master, and Repeater2 must talk directly to Repeater1. -
Page 33: (D) Radio Id
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f (D) Radio ID Option (D) allows a transceiver to be designated with an arbitrary, user selectable, 4 digit number which identifies the transceiver in the diagnostics mode. -
Page 34: Baud Rate Selections
It is important to note that this is independent of the baud rate for the other Transceiver(s) in the communication loop. For example, FreeWave may be used in an application to send data from remote process instrumentation to an engineer's computer. In this application the baud rate for the Transceiver on the instrumentation might be set to 9600, and the Transceiver on the computer might be set to 57,600 or 115,200. -
Page 35: Data Word Length And Parity
(2) Data Word Length and Parity There are six data word length and parity configurations available to be used with FreeWave transceivers. The default setting is 0 (8,N,1) and is the most commonly used serial communications protocol. Data word length and parity selections available:... -
Page 36: Call Book Selections
Call Book Selections (2) Edit Call Book The Call Book is an innovative feature in FreeWave which offers both security and flexibility in use. The Call Book accomplishes this by allowing the user to determine with which other FreeWave Transceivers a given Transceiver will communicate, based on the serial numbers for both the master and slave. -
Page 37: Entering Or Modifying Numbers In The Call Book
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Figure 6: Call Book Menu Entering or Modifying numbers in the Call Book Entering or modifying serial numbers in the Call Book is a straightforward process. When in the Call Book menu enter the position number (0 - 9) you wish to edit. -
Page 38: Programming The Call Book In Multipoint Systems
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f master is instructed to Call All available slaves it will call all slaves listed until it reaches the first phone number of 000-0000. If a valid serial number is entered after the all zero number it will not be recognized as a valid number to call by the master. -
Page 39: Radio Transmission Parameters
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Radio Transmission Parameters (3) Edit Radio Transmission Characteristics When item (3) is selected in the main menu the screen in figure 6 appears, which allows the user to modify the radio transmission characteristics of the Transceivers. -
Page 40: Freqkey
Selection (0) in the Radio Parameters menu allows the user to modify the hopping patterns of the Transceivers to minimize the interference with other FreeWave Transceivers in operation in the area. For instance, if there were 10 pairs of FreeWave transceivers in operation within a factory or refinery, changing the Frequency Key would ensure that they would not jump onto the same frequencies at the same time for the same length of time. -
Page 41: Table 5: Frequency Bands, 900 Mhz
Within a specified band you may select the number of frequencies to be used, ranging from 50 to 112. (2) Hop Freq Offset The Hop Freq Offset option is not functional in the 900 MHz spread spectrum transceiver. Note: Irrespective of the Freq Key used, all transceivers in either point to point or point to multipoint networks must be set to identical Hop Tables and Table Size (number of frequencies). -
Page 42: Table 6: 2.4 Ghz Frequency Band Selections Available
V4.2f 2.4GHz The Frequency Key for the FreeWave Technologies 2.4GHz transceivers offers the ability to select more than just a different pseudo random hop table, but also the portion of the band which the transceiver will use. Because this feature offers... -
Page 43: Figure 9: Frequency Key & Hop Table Options, 2.4 Ghz
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Figure 9: Frequency Key & Hop Table Options, 2.4 Ghz... -
Page 44: Max Packet Size And (2) Min Packet Size
This may be of particular value when using FreeWave with different communications software packages; you may find that throughput is optimized when packet sizes are restricted by the transceiver. It should be noted, however, that in Point to Point modes the Max and Min Packet Settings will not have any material impact on throughput unless 115.2 KBaud is desired. -
Page 45: Table 8: Max Packet Size Settings (Bytes) Rf Data Rate=2
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Table 8: Max Packet Size Settings (Bytes) RF Data Rate=2 Max Setting Setting Table 9: Max Packet Size Settings (Bytes) RF Data Rate=3 Max Setting Setting... -
Page 46: Xmit Rate
(4) RF Data Rate FreeWave has two settings for the RF Data Rate (not to be confused with the RS232 Baud Rate). Setting 2 should be used when the transceivers are close together and data throughput is to be optimized. Setting 2 must also be used when full throughput of 115.2 KBaud is necessary. -
Page 47: Rf Xmit Power
With option 6 the user may disable the transceiver’s security so it will accept a call from any other FreeWave unit. The default setting is 0 where security is enforced (the caller’s serial number must be in the slave’s Call Book), with a setting of 1 security is disabled. -
Page 48: Retry Time Out
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Slave. In point-to-multipoint mode the Master will repeat the message the number of times equal to the Master Packet Repeat number in the Multipoint Setup menu. Because the Master transmit time is completely asynchronous to the occurrence of any change of the RTS line, the latency time from RTS to CTS is variable. -
Page 49: Table 11: Low Power Settings
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f back to the master. Designed primarily for SCADA systems, the Lowpower Mode is of little value when significant amounts of data need to be sent from the slave to the master. -
Page 50: Radio Statistics
High noise levels can often be improved with bandpass filters, antenna placement or antenna polarization. Please contact FreeWave Technologies for more information. Average Signal Level The average signal level indicates the level of received signal at the measurement site. -
Page 51: Table 12: Conversion Of Average Noise Level To Dbm
Radio Temperature The radio temperature value is the current operating temperature of the radio in degrees C (Celsius.) For proper operation, FreeWave radio modems must be in the range of –40 to 75 C. -
Page 52: Transceiver Location
V4.2f Transceiver Location Placement of your FreeWave unit is likely to have a significant impact on its performance. In general the rule of thumb with FreeWave is that the higher the placement of the antenna the better the communication link - height is... -
Page 53: Front Panel Leds
900 MHz and 2.4 GHz V4.2f Front Panel LEDs The LEDs on FreeWave's front panel provide important information on the operation of the transceiver. Compare the status of a Transceiver's LEDs with the table below to aid you in the troubleshooting process. -
Page 54: Table 14: Led Status In Multipoint Mode
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Table 14: LED Status in Multipoint Mode MultiPoint Communications Master Slave Repeater Condition Powered, disconnected Repeater and slave connected to master, no data Repeater & slave connected to master,... -
Page 55: Using An External Antenna
The use of an external antenna may radically improve the results obtained with FreeWave Transceivers. It is highly desirable to obtain line of sight with the antennas, and changes in placement height of as few as a couple of feet may make the difference between no link and one that is solid and reliable. -
Page 56: Table 17: Approved Antennas, 900Mhz And 2.4Ghz
Nearby lightning strikes or elevated levels of static electricity may lead to voltage spikes on the line, causing failure in the transceiver’s RS232 interface. Table 17: Approved Antennas, 900MHz and 2.4GHz The following antennas are approved for use with FreeWave transceivers: 900MHz Directional Antennas Gain Manufacturer... -
Page 57: Antenna Alignment
V4.2f Antenna Alignment FreeWave modems have a convenient, built-in tool that simplifies the task of aligning directional antennas. This tool is particularly useful when the antenna on either end is not visible from the other end due to distance or obstructions. -
Page 58: Rs232 Pin Assignments
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f RS232 Pin Assignments Table 18: RS232 Pin Assignments Assignment Signal Carrier Detect Output Transmit Data Output Receive Data Input Input Ground Data Set Ready Output Input Output... - Page 59 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Pin 8: Clear to Send (CTS) This signal is used to tell the system device connected to the modem that the modem is ready to receive data. When asserted, the modem will accept data, when deasserted the modem will not accept data.
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Page 60: Dgro Small Footprint Series Pinout
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f DGRO Small Footprint Series Pinout The DGRO Small Footprint Series transceivers are available in both TTL and RS232 versions. The TTL versions use reverse polarity from standard RS-232 at 0 to 5 Volt levels. -
Page 61: Dgr-115W Waterproof Enclosure Pinout
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f DGR-115W Waterproof Enclosure Pinout Table 20: DGR-115W Pinout Color Function Signal Brown Carrier Detect Output Transmit Data Output Orange Receive Data Input Yellow Input Green Ground Signal Ground... -
Page 62: Data Communications Settings
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Data Communications Settings The device to which FreeWave is connected should be configured to match the settings shown in Table 21. Table 21: Data Communication Settings Parameter... -
Page 63: Establishing Data Communication Links
900 MHz and 2.4 GHz V4.2f Establishing Data Communication Links FreeWave's versatility allows data communication links to be established using a variety of different configurations. This, in turn, makes it possible to extend the range of FreeWave and get around obstacles. - Page 64 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Diagram (C) shows a link with two repeaters between the master and slave. With two repeaters there is clearly more flexibility in getting around obstacles and greater total range is possible. Once again, it would be desirable to use external omnidirectional antennas with the repeaters, and attaching a Yagi to the master and slave would increase the range of the link.
- Page 65 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Example (E) depicts a standard point-to-multipoint system. In this example any data sent from the master is broadcast to all three slaves, one of which receives it through a multipoint repeater. The data is in turn sent out of the RS232 port of each of the three slaves.
- Page 66 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f In (F) a point-to-multipoint system is depicted which uses one of the slave sites as a repeater simultaneously, all through the same radio. This system works in...
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Page 67: Other Settings
V4.2f Other Settings A number of parameters other those shown in the setup menu may be set on FreeWave transceivers. The parameters below may be set with DOS based software available by contacting FreeWave Technologies. Baud Rate The transceiver's RS232 baud rate may be set to 300, 600, or 900 baud. -
Page 68: Technical Specifications
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Technical Specifications Specification Frequency: 902 to 928 MHz 2.400 to 2.4835 GHz Transmitter: 955 mW (+29.8 dBm) at 9.5 to 14.0 V 500 mW (+27 dBm) at 9.5 to 14.0 V Output Power 400 mW (+26 dBm) at 7.5 to 9.5 V... - Page 69 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f DGR-115 DGR-115H DGR-115R / DGR-115W / DGMR-115R DGMR-115W Enclosure Plastic Milled Aluminum Extruded Aluminum Extruded Aluminum Waterproof Dimensions 41mmH x 99mmW x 188mmL 28mmH x 102mmW x...
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Page 70: Troubleshooting
900 MHz and 2.4 GHz V4.2f Troubleshooting "I am using FreeWave to communicate between two PCs. I am using pcANYWHERE, which is set to direct connection. Both pcANYWHERE and the modem are set to 115.2 KBaud, yet throughput is considerably lower."... - Page 71 FreeWave in the field. FreeWave essentially functions as a null modem cable. If the application will not work with a hard wire connection then it will not work with FreeWave, and the problem lies within the application or other hardware (such as the computer serial ports).
- Page 72 "I have 2 DGR-115 transceivers set up between two computers and have been unsuccessful in my attempts to establish a link using LapLink." At various times difficulty using FreeWave with LapLink has been documented by FreeWave Technologies. The cause, while not confirmed, is believed to be due to LapLink changing baud rates, which FreeWave does not support.
- Page 73 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Notes:...
- Page 74 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Notes:...
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Page 75: Antenna Installation Drawing
FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f Antenna Installation Drawing... - Page 76 FreeWave Technologies Spread Spectrum Transceiver User Manual 900 MHz and 2.4 GHz V4.2f...
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