MELLON 5p 14 1938 Operational and Safety Notes FCC Notice, U.S.A. All Hop Net products comply with Part 15 of the FCC Rules. Operation is subject to the following conditions: « This device may not cause harmful interference, and this device must accept any interference received, including interference that may cause undesired operation. » This device is specifically designed to be used under Section 15.203 of the FCC Rules and Regulations.
Contents Chapter 1 Hop Net Family of Products Overview About the Hop Net Products H-1000 Outdoor Base/ Remote Station H-1500 Indoor Base/ Remote Station. H-2000 Repeater... H-3000 Remote... Typical Hop Net Applications . Chapter 2 Functional Description Overview Network Communication Point-To-Point Networks Multi point Networks... -6 Multi point Network Examples 2-12 Minimizing Latency Minimizing Power CONSUMPTION chess sins 2-16 Chapter 3 Configuring the Hop Net Network Overview Using the NET COM Software.
Chapter 1 Hop Net Family of Products Overview Introduction The Hop Net family of products provides reliable wireless connectivity for either point-to-point or point-to-multi point applications. The Hop Net products are built around the Hop Net radio transceiver, which employs frequency hopping spread spectrum technology.
Overview, Continued Term Definition DTE Data Terminal Equipment. A device that provides data in the form of digital signals at its output. The computer side of a computer-to-modem connection. EIRE Effective Isotropic Radiated Power. ISM Industrial, Scientific, or Medical band operating at 2.4 GHz. Allows use of a radio without a license, but the equipment must be immune to interference from other users in the band. Latency The delay between when data is received on TX until it is output on RX.
H-1000 Outdoor Base/Remote Station Introduction The Hop Net Outdoor Base/ Remote Station (H-1000) features a low-cost, rugged, compact, NAME 4X/1P 66 enclosure for outdoor or harsh industrial environments. You can use the H-1000 with all Hop Net products and with any existing WIT2400 network. Data Transmission The H-1000 supports up to 255 remotes on a single network. You can operate 16 different networks in the same area without conflicts. The H-1000 can easily transmit up to 1.0 mile line of sight.
H-1000 Outdoor Base/Remote Station, Continued 800226 Rev. A Technical Specifications Refer to the following table for the technical specifications for the H-1000. General Specification Value Frequency Band » 2401-2480 MHz (USA) » 2448-2480 MHz (France) Number of Channels * 80 Approvals o US FCC: Part 15. 203 « European Community: ETS 300.
H-1500 indoor Base/Remote Station Introduction The Hop Net Indoor Base/ Remote Station (H-1500) features a rugged, compact, NAME 4X enclosure for indoor or harsh industrial environments. Data Transmission The H-1500 supports up to 255 remotes on a single network, with up to 16 different networks in the same area. The H-1500 can usually transmit over a range of 500 to 1000 feet indoors with obstructions. You can extend this range by adding a Hop Net Repeater (HN-2000).
H-1500 Indoor Base/Remote Station, Continued Technical Specifications Refer to the following table for the technical specifications for the FIN-1500. General Specification Value Frequency Band 24012480 MHz (USA) 2448-2480 MHz (France) Number of Channels 80 Approvals US FCC: Part 15. 203 European Community: ETS 300.
H-2000 Repeater Introduction The Hop Net Repeater (H-2000) provides extended range capability between two Hop Net networks. This repeater capability allows Hop Net networks to be “daisy chained” in series to send and receive data from remote locations that would otherwise be outside the coverage area of a single network. If a remote unit is unable to communicate with the Base because of distance or obstruction, you can install a repeater.
H-2000 Repeater, Continued Three-Way Switch A miniature 3-way switch is located inside the back panel of the enclosure. See the illustration below. A) =) Base 4 Remote Repeater Use this switch to select one of three functions for the repeater: + Remote configuration + Base configuration + Repeater operation (normal setting) When you select Base or Remote configuration mode, you can program either side of the repeater through the DB-9 connector.
H-2000 Repeater, Continued Configuring the Repeater Complete these steps to configure the H-2000 Repeater to the desired mode: 1. 800226 Rev. A Remove the back panel of the repeater to set the function. Once the panel is removed, you should see the following: * A DB-9 connector * A 3-way switch * An Led Flip the 3-way switch to the Remote position and configure one of the modems as a remote unit.
H-2000 Repeater, Continued 800226 Rev. A Mechanical Specification Value Case » NAME 4X, IP 66 Size * 8.4in. x 5.
H-3000 Remote, Continued Remote Pin-Out Pin Number Signal Type Description 1 TX Input « Non-inverted TX Data * R-485 levels + Logic “1” =5V * Logic “0” =0V 2 Disputant e Inverted TX Data » RS485 levels o Logic “1” =5V » Logic “0” =0V Output « Non-inverted RX Data » RS485 levels + Logic “1” =5V » Logic “0” = OV Output « Inverted RX Data » RS-485 levels + Logic “1” =0V * Logic “0” = 5V Output + Clear to Send * RS-232 levels « Buffer Ready = +12V + Buffer Full =-12V 6 DTR Input » Data Terminal Ready + RS-232le
H-3000 Remote, Continued 800226 Rev. A Technical Specifications Refer to the tables below for the technical specifications for the H-3000 Remote. Electrical Specification Value Transmitter FCC ID * HSW-2400M Transmit Power e EIRE: +24 dBm Nominal * +26 dBm Maximum Hopping Patterns » User configurable, 16 patterns (networks) available Number of Channels * 80 Line-of-Sight Range * Greater than 1 mile Frequency Band * 2401-2480 MHz (USA) * 2448-2480 MHz (France) Approvals » US FCC: Part 15.
Typical Hop Net Applications Introduction The illustration below shows a complete network of multiple data sources connected to a central base. Units that are out of range are connected through a repeater. See the illustration of a point-to-point application on the next page. Point to Multi point This common application consists of a central host and remote terminal units or other data collection devices.
Chapter 2 Functional Description Overview Introduction The Hop Net product line will allow you to create a wide range of wireless networking topologies—everything from simple point-to-point configurations to complex multi point networks. Hop Net wireless modems transmit and receive serial asynchronous data in either RS-232 or RS485 format.
Network Communication, Continued Channel Access When transmitting to the base station, multiple remotes must share the same channel. Hop Net products offer two methods for channel access: « SCAM + MADMAN Carrier Sense Multiple Access (SCAM) is contention based. Time Division Multiple Access (MADMAN) is slotted or scheduled. For more information on these access methods, see Contention Protocols later in this chapter. 800226 Rev.
Point-To-Point Networks, Continued Typical Point-to-Point Networks Refer to the following diagram of a typical point-to-point network: 800226 Rev.
Multi point Networks, Continued Guidelines Refer to the following table for a description of each part of the multi point packet format. Part Description STX Start-of-transmission character. Used to signal the beginning of a packet (02 Hex). Remote Address | In the case of the base station receiving a packet, this is the source address of the remote that sent the packet. In the case of the base sending a packet, this is the destination address of the remote unit that will receive the packet.
Multi point Networks, Continued Contention Protocols The various remote nodes must share air-time capacity in any multi point communications network, The Hop Net products have two means of doing this: ¢ SCAM * MADMAN SCAM Carrier-sense multiple access (SCAM) is one contention protocol. The SCAM protocol is very effective with sorting random packets of irregular data from a large number of remote nodes. One advantage of SCAM is that it does not require special coordination between remotes.
Multi point Networks, Continued Transparent Broadcast Network One type of multi point network is a transparent broadcast network, which transmits packets to all remote nodes simultaneously. Dyes at these remote nodes can determine whether the information was intended for that particular node. Data from any remote node always transmits to only the base station to which the remote unit is dedicated.
Minimizing Latency Introduction The Hop Net system user can choose modem configuration settings that greatly influence the data delays that may be encountered. Many times there is a trade off between latency and bandwidth. It is difficult to optimize both parameters. Data Rates The Hop Net products all have transmit buffers for storing data prior to transmission. You can configure Hop Net modems at a variety of data rates, for example 2400 bps to 115 Bps.
Chapter 3 Configuring the Hop Net Network Overview Introduction You can configure the Hop Net network using a PC and the NET COM software provided by Digital Wireless Corporation. NET COM is a menu-driven software package that runs under Windows 95 or NT and guides you through the necessary steps to configure your application network. This chapter provides the information you need to configure your Hop Net network.
Using the NET COM Software Introduction The NET COM software is a Windows 95/NT Program written for PC compatible computers that you can use to easily configure your Hop Net network. This following information describes the NET COM software, provides installation instructions for NET COM, and describes the fields that require user input.
Using the NET COM Configuration Program Window Introduction The NET COM Configuration Program window is illustrated below. The left part of the window displays the Source Address, Data Rate and Radio Name of all units in the network. You can select a radio by clicking on it. You can also select multiple radios by holding down the CTR key and clicking on selected radios or by clicking the Select All Radios push button. The center of the window displays the various fields, which require user input.
Configuring the Network Commands Introduction This section provides information to help you configure the individual network parameters of the Hop Net network. Network Commands The network window contains four sections (see below). * System « Address « Packet » Access Method 115200 mane ooo no: ce oor foot 9s eases 1 Radio Name Allows you to give the network radio a generic name, such as RUT. This name is not stored in the radio and is only used in the NET COM software.
Configuring the Network Commands, Continued Set Minimum Packet Length Defines the smallest packet size (number of bytes) that a remote unit will immediately transmit. The modem input buffer accumulates data until this minimum packet size is reached and then transmits the data. This parameter only applies to remote units. Since the base station transmits on every hop, it has an effective minimum packet length of 1 byte.
Configuring the Serial Commands Introduction This section provides information for configuring the serial parameters of the Hop Net network. Serial Commands The serial window contains three main sections {see below). + Data Rate « Data Format = Power On Options 115708 Bess.
Configuring the ARQ Commands Introduction This section provides information for configuring the ARQ parameters of the Hop Net network. ARQ Commands The ARQ window allows you to set the error correction protocol as shown below. = 1% 560 Remove 9600 Remote 3 S500 Remote 2 S08 Remote 3 $600 Remote ¢ Error Correction Enable or disable error correction. Enable Redundant Transmit 800226 Rev. A Overrides reception of ARQ acknowledgments, forcing the radio to transmit packets redundantly.
Configuring the RF Commands Introduction This section provides information for configuring the RF parameters of the Hop Net network. RF Commands The RF window contains three main sections (see below): + Transmit Power » Frequency Set + Options Set Transmit Power Caution: When using the 10 mW power setting, the antenna port is biased with 5 VDC. Although this is typically not a problem, it may exceed the input limits of some RF test equipment.
Designing Your System Introduction The Hop Net family offers versatility because you can configure it with an existing WIT2400 network both indoors and outdoors. Consider these three factors when you design your system: « Operating Margin of system » Insertion Loss of Cable « Antenna Selection All three items are used in the design to determine overall system performance. For indoor applications, fire codes specify the type of cables you can route in certain locations within the building.
Installing the Hop Net Products Guidelines for Installation ‘When installing your system, always consider the following points: « Directional antennas are best for remote unit sites. They may increase the cost, but they confine the transmission path to a narrow lobe and minimize the interference from nearby stations. For systems with constant interference present, you may need to change the polarity of the antenna system and reduce data streams.
Chapter 4 Programming Examples Overview Introduction This appendix provides examples that you can refer to when you configure your network with the NET COM software. In this Chapter This chapter contains information on the following topics. Topic See Page Configuring a SCAM Multi point Network with Four Remotes 42 Configuring a Point-to-Point Network with a Repeater 4-6 HORNET H-2000 Repeater Configuration 4-10 41 800226 Rev.
Configuring a SCAM Multi point Network with Four Remotes, Continued Configuring the Remote Unit Follow these steps to configure the remote unit. 800226 Rev. A From the radio list box, select Remote 0. Click on the Network Tab. Click on SCAM Persistence and enter 192 Click on Timeout Duration in the Packet Box and enter 0. Click on Remote 1 from the Radio list box . Click on Timeout Duration in the Packet Box and enter 0. Click on SCAM Persistence and enter 192 Repeat steps 5 through 7 for remotes 2 and 3.
Configuring a SCAM Multi point Network with Four Remotes, Continued Printing the Network Configuration Follow these steps to print the network configuration file. “own 800226 Rev. A Open Word pad or any word-processing program. Select Open. Go to the NET COM directory. Click on the file name (for example, Remoteness. Click on the Print icon to print your configuration file.
Configuring a Point-to-Point Network with a Repeater, Continued Downloading the Configuration to the Base Follow these steps to download the configuration to the base side of the network. 800226 Rev. A Remove the back panel of the repeater to set the function. Once the panel is removed, you should see the following: » A DB-9 connector * A-way switch « An Led Note: A bi color LED is directly behind the switch that indicates when configuration mode has been selected and which unit is being configured.
Configuring a Point-to-Point Network with a Repeater, Continued 800226 Rev. A « If the download is successful, the system will prompt you. Click OK to return to the NET COM Configuration Program window. » If the download is unsuccessful, identify the error, correct it, and click Retry. Unplug the serial cable from the H-2000. Flip the 3-way switch to the center position for repeater made. Be sure the LED is off. Replace the back panel. Select Network. Select Save As.
HORNET H-2000 Repeater Configuration, Continued To send the same message through the repeater to a remote in network B, a second packet wrapper must be added.
Chapter 5 Troubleshooting Overview Introduction Troubleshooting the Hop Net products is not difficult, but it does require a logical approach. It is best to begin troubleshooting at the base station because the rest of the system synchronizes to it. If the base station has problems, the entire network will be compromised. This chapter provides troubleshooting information for your Hop Net products.
Guidelines for Reducing Interference Introduction The transceivers share the same frequency spectrum with other services and other Part 15 devices in the US. Because of this, you may not achieve 100 percent error free communications in a given location. You should also expect some level of interference.
Customer Support Introduction Digital Wireless Corporation products are designed for long life and trouble free operation. The following information is provided if servicing becomes necessary. Technical Assistance Technical assistance for DWC products is available from the hours of 9:00 A.M 5:30 P.M. Eastern Standard Time. When calling, please have available the complete model name, serial number, and a complete description of the problem.
Appendix A Mechanical Drawings Overview Introduction The following examples are provided to help you install your Hop Net products. In this Appendix This appendix contains the following mechanical drawings. Drawing « H-1000 Outdoor Base/ Remote Station « H-1500 Indoor Base/ Remote Station * H-2000 Repeater » FEN-3000 Remote s H-3500 Adapter 800226 Rev.
Appendix B Modem Command Summary Overview Introduction Refer to the following information for a summary of the command list for the Hop Net products. These commands are hexadecimal values that you can use to configure the radio instead of using the NET COM software. Command Conventions Brackets as used here denote a set of optional arguments. Vertical slashes separate selections. For example, given the string wn[? legal commands would be wn?, wn(, wn3, and wna.
Protocol Commands Command Description Set Hop Duration Set Minimum Packet Length (remote only) Set Maximum Packet Length (remote only) pt[? | 00..ff Set Packet Timeout Duration (remote only) pm[? [00.
Appendix C Accessories Overview Introduction This appendix provides information on the accessories that support the Hop Net products. In this Chapter This chapter contains the following topics. Topic See Page Antennas C2 Adapter C3 Power Supply C5 800226 Rev. A.
Adapter Introduction The H-1000 and H-3000 can be used with an RS-232 to RS-485 adapter (the HIN-3500). The GIN-3500 enables you to configure the GIN-1000 and H-3000 outdoor units from an RS-232 controller. The adapter housing is designed for an indoor environment.
Power Supply Introduction The H-3500 provides the power necessary to operate the Hop Net products. This power supply can also power the H-2000. The power supply is designed for an indoor environment. The part number for this power supply is A-3200-1000. AC to DC Conversion The external power supply connects to a 2-pin Cornwall corrector on the H-3500 adapter. The adapter converts 115 AC to +9 VDC.
Index # 3-Way Switch, H-2000, 1-15 9-Pin Conceal 1-20 A Accessories, C-1 Adapter, C-3 Aiming the Antenna, FIN-3000, 1-22 Antennas Corner Reflector, C-2 Omani 24-2, C-2 Omani 24-9, C-2 Omani 24-12, C-2 Magi 24/14, C-2 Antenna Connection H-1000, 1-6 H-1500, 1-10 H-2000, 1-14 Antenna Recommendations, 2-8 Termagant Selection, 3-17 Approvals H-1000, 1-7 GIN-1500, 1-11 H-2000, 1-18 H-3000, 1-23 ARQ 1-2 ARQ Attempt Limit, 3-14 ARQ Commands, 3-13 ARQ Per-Hop Limit, 3-14 Asynchronous Data Format, 3-12 B Banner Displ
N NET COM Installing, 3-4 Menu Functions, 3-6 Using, 3-3 Network Commands, 3-7, B-2 Network Communication, 2-2 Network Number, 3-7 Network Protocol H-1000, 1-7 H-1500, 1-11 Number of Channels H-1000, 1-7 H-1500, 1-11 H-2000, 1-18 H-3000, 1-23 0 Omani 24-2 Antenna, C-2 Omani 24-9 Antenna, C-2 Omani 24-12 Antenna, C-2 Operating Frequency, 14 Operating Margin of System, 3-17 Output Impedance H-1000, 1-7 H-1500, 1-11 P Packet Format, 2-6 Packet Length Maximum, 3-9 Minimum, 3-9 Packet Mode, 3-12 Packet Timeout D
Sleep Mode, 2-16 Source Address, 3-8 Status Commands, B-3 Supply Current H-2000, 1-18 Synchronizing the Base with the Remotes, 2-2 Synchronous Data Format, 3-12 T MADMAN, 1-3, 2-10 Technical Assistance, 5-5 Terminal Block, H-3500, C4 Testing Your Network Site, 3-18 Three-Way Switch, H-2000, 1-15 Transmit Power H-2000, 1-18 H-3000, 1-23 Transmitter FCC ID H-2000, 1-18 H-3000, 1-23 Transparent Broadcast Network, 2-11 TX Power Output H-1000, 1-7 u-Z Magi Antenna, C-2 800226 Rev.
DB-9 Connector, 1-9, 1-14, C4 dBi, 1-2 dBm, 1-2 DCD, 1-2 DCE, 1-2 Decibel, 1-2 Designing Your System, 3-17 Destination Address, 3-8 Diversity Antenna, 3-16 Downloading a Radio Configuration, 4-4 DTE, 1-3 Dwell Time, 2-15 E EIRE, 1-3 Enable Banner Display, 3-12 Enable Diversity Antenna, 3-16 Enable Limited TSETSE Channel Set, 3-15 Enable Peer Addressing, 3-8 Enable Redundant Transmit, 3-13 Environmental Specifications H-1000, 1-8 H-1500, 1-12 H-2000, 1-19 H-3000, 1-24 Error Correction, 3-13 Escape Sequence D
Adapter, Continued DB-9 Connector The H-3500 is equipped with a DB-9 corrector to link the R-232 interface to a terminal block for the RS-485 interface. See the following illustration for the signal description. 5 Ground 9 Not Used 4 Not Used 8 Clear to Send (CTS) 3 Transmit Data (TX) 7 Request to Send (RTS) 2 Receive Data (RX) 8 Data Set Ready (DTR) 1 Data Carrier Detect (DCD) Terminal Block The terminal block on the connector converts RX and TX R-232 signals into RS-485 differential.
Antennas Types of Antennas The Hop Net product line can be used with a number of antennas. The physical layout of your system determines the style of antenna you should use. At the base station, an omnibus-directional antenna is normally used to ensure coverage to all of the remote sites. See the table below for a selection of antennas available from Digital Wireless Corporation.
Network Commands Command Description wn? Set Network Number Set Base/ Remote wd? Set Destination Address (base only} Set Source Address (remote only) Set Channel Access Mode (remote only} Set Transmit Power Serial Interface Commands B-2 Command Description Set Data Rate Divisor Set Sync/ Sync Set Packet Mode (base only) Modem Command Summary 800226 Rev.
Guidelines for Reducing Interference, Continued Guidelines for Avoiding Terrain Obstructions The Hop Net transceivers operate in the GHZ frequency band. While this band offers many advantages over the VHF for data transmission, it is also more prone to signal attenuation from obstructions such as terrain, foliage, buildings and anything in the transmission path.
Troubleshooting Table Common System Problems The following table offers suggestions for resolving some common systems problems that the operator may experience from the radio system. If problems persist, contact the factory for further assistance. Problem System Checks Unit is inoperative 1. Check for proper DC voltage at the power connector. 2. Momentarily remove and reapply power. No Carrier Detect at | 1. Check for secure interface connections at the remote units or transceiver. intermittent 2.
HORNET H-2000 Repeater Configuration Introduction Exa 410 mole data rate : network ; The HORNET H-2000 repeater acts as a bridge between two Hop Net wireless networks to extend range or coverage area. The following information illustrates how messages flow through the network. Internally, the repeater essentially consists of two modems with connected data lines one modem is a “base,” the other a “remote.” As an example, assume you have a network A you wish to extend the range of.
Configuring a Point-to-Point Network with a Repeater, Continued Saving the Network Configuration Follow these steps to save the network configuration. 1. Click on the Network option. Click on the Save As option. Type in Base Station as the file name and click Save. You can now configure side 2 of the network. Configuring Side 2 of the Network Follow these steps to configure side 2 of the network. oo WNP Select Network. Open the Base Station configuration file. Select Base from the radio list box.
Configuring a Point-to-Point Network with a Repeater Introduction In a point-to-point network configuration, you may need to extend the range because of obstruction or because you have reached the line of sight limit. You can add a repeater to the network to extend the range. The H-2000 Repeater must be configured as two separate networks. Configure one side as a base and the other side as a remote. See the illustration below.
Configuring a SCAM Multi point Network with Four Remotes, Continued Downloading the Configuration Follow these steps to download radio configuration parameters to selected radios in this multi point network. 1. Use a straight-thru cable to connect the download radio to the serial port of the terminal. From the list box on the NET COM Configuration Program window, highlight the radio to which you wish to download radio configuration parameters. Click the Download... button at the bottom right of the window.
Configuring a SCAM Multi point Network with Four Remotes Introduction The following is an example of programming a SCAM network with four remotes. In a SCAM network, each remote will be programmed with a distinct address. In multi point operation, the base must be set for packet mode for sending ari receiving data. Packet mode provides a way for the base station to tell the user which remote sent a particular message.
Installing the Hop Net Products, Continued 2. Measure and install primary power source for the radio. It must be within 7.5 to 12 VDC and capable of furnishing 750 millionaires. 3. Install the antenna and antenna feed line for the station. The H-3000 does not require an external antenna or feed line. Preset the directional antenna as required. 4. Connect the data equipment to the interface connection. Most applications only require that you connect TXD, RXD, and signal ground for proper operation. 5.
Testing Your Network Site If you are in doubt about the suitability of your network site, follow these steps to perform an over-the-air test survey. 1 Install a transceiver at the proposed base station site with the proposed antenna in its final position. Visit each remote unit site with a transceiver and a hand-held antenna and verify carrier detect. This indicates that the remote unit is in range of the base. wa 318 Configuring the Hop Net Network 800226 Rev.
Configuring the RF Commands, Continued Set Link Margin Sets the number of consecutive hops on which a remote unit can fail to hear the base station signal before dropping DCD and attempting to reacquire. Smaller values are useful if more rapid indication of signal loss is required. Larger values will prevent DCD from fluctuating excessively at the edge of range. For most applications, a value of 16 is sufficient. Enable Diversity Antenna Allows the radio to operate with a steerable antenna.
Configuring the ARQ Commands, Continued Set ARQ Attempt Limit Sets the number of times the radio will attempt to send an incorrect packet before discarding it. A value of zero disables ARQ. Setting this parameter to 255 will cause the radio to re-send messages indefinitely until they are acknowledged. Set ARQ Per-Hop Limit Sets the number of times the radio will attempt to send an incorrect packet given hop.
Configuring the Serial Commands, Continued Set Packet Mode Enables the base station to operate in a multi point network. In order for the base station to distinguish data streams from multiple remote units, user data that comes to and from the base station must conform to the packet format. Set Idiosyncrasy Selects the data format as standard asynchronous (8 data bits, 1 stop bit). Refer to the following illustration.
Configuring the Network Commands, Continued Set SCAM Back off Constant In SCAM mode, defines the maximum time that a remote unit will wait before attempting to send the packet again (also called the back off interval}. Enter this value in 153.6 ps increments. Set SCAM Persistence In SCAM mode, sets the probability that a remote unit will transmit immediately rather than first waiting for a back off interval.
Configuring the Network Commands, Continued Set Hop Duration Sets the length of time the transceiver spends on each frequency channel. Enter the values in hexadecimal as follows: « A smaller value allows the remote unit to lock onto the base signal faster at system startup and will generally decrease packet latency. ¢ A larger value increases network capacity, due to decreased overhead in channel switching. The hop duration is specified in 153.6 ps increments.
Using the NET COM Configuration Program Window, Continued Menu Functions From the NET COM Configuration Program window, you can do the following: 36 Perform basic file functions: — Create a new configuration file Open an existing configuration file ~ Save a NET COM configuration Save a NET COM configuration as a new name * Configure four main areas of a Hop Net network: Network — Serial ~ ARQ ~ RF » Configure the radios in your network: ~ Add radios ~ Delete radios — Select all radios ~ Select all remotes —
Installing the NET COM Software Follow these steps to install the NET COM software. 1 Be sure that your monitor is set up for 800 by 600 pixels. Insert the NET COM diskette into the floppy drive of your computer. Click on Start from the taskbar and do the following: » Highlight Programs. + Highlight Window Explorer. From Explorer, select the A: drive Copy the NET COM application to the appropriate directory on your C: drive. The NET COM software loads onto your computer in the specified directory.
Overview, Continued Related information See Chapter 4 for programming examples. See Appendix B for a summary of all the modem commands. 32 Configuring the Hop Net Network 800226 Rev.
Minimizing Power Consumption Introduction Hop Net products offer a way to minimize power consumption. Power Consumption Hop Net remote units can stay linked to a network while neither transmitting nor receiving data with a typical power consumption of about 30 mA. As network activity increases, this consumption increases as the transmit duty cycle increases. Sleep Mode Hop Net units can be put into a reduced power consumption sleep mode via the DTR pin.
Multi point Network Examples Typical Point-to-Multi point Network Refer to the following examples of typical point-to-multi point networks: Example 1 ” 2-12 Functional Description 300226 Rev.
Multi point Networks, Continued TOMS Time-division multiple access (MADMAN) is the other multi point protocol built into the Hop Net products. The MADMAN protocol allocates fixed portions of bandwidth by providing a time slot for transmissions from each remote modem on every frequency hop. With MADMAN, each remote is programmed to transmit during an individual dedicated time slot. Since bandwidth is reserved for each unit in advance, channel availability is more consistent than with SCAM.
Multi point Networks, Continued Antenna Recommendations Maximum range can be achieved by using the omnibus-directional antenna on the base station node and the 15 dB Magi antenna on the remote nodes of the network. You must take special care to properly aim the highly directional 15 dB Magi antenna.
Multi point Networks Introduction Most multi point networks require a base station with omnibus-directional coverage, such as the FIN-1000 (outdoor applications) or the H-1500 (indoor applications). The wireless base station modem is typically combined with one of the following: » 2 dB dipole antenna * 9 dB omnibus-directional high-gain antenna + 12 dB omnibus-directional high-gain antenna You can use any of the Hop Net wireless modems on the remote nodes of the network.
Point-To-Point Networks Introduction For point-to-point operations, communication is bi-directional and the underlying alphabetization process completely transparent. Multi point applications, however, require some accommodation for alphabetization. Any combination of the H-1000, H-1500, or the H-3000 wireless modems can communicate with each other in a point-to-point configuration. The H-1000 and H-1500 each require external antennas.
Network Communication Introduction This section provides information on how Hop Net products communicate with each other. Synchronizing the Base with the Remotes The base station establishes the network timing by sending out a synchronization pulse at the beginning of each hop. The remotes first scan for this pulse and synchronize to the base hopping pattern before they can communicate. This timing acquisition may take about 5 seconds.
Typical Hop Net Applications, Continued Point-to-Point A point-to-point application as shown below provides a communication data link between two locations. H-1000 126 Hop Net Family of Products 800226 Rev.
H-3000 Remote, Continued Environmental Specification Value Temperature Range degrees C Humidity degrees C, Non-condensing 1-24 Hop Net Family of Products BO0226 Rev.
H-3000 Remote, Continued Cable Interface When you install the cable, check the cable interface for the two power connections VCC and GND to ensure that the supply voltage into the remote never drops below 5.5 V. During initial turn-on, the remote can draw up to 700 mA. This surge current will produce a sizable voltage drop across the combined resistance of the VCC and GND wires in the cable assembly. If the resulting supply voltage into the Remote drops below the 5.
H-3000 Remote Introduction The Hop Net Remote (H-3000) is a low-cost, weatherproof version of the Hop Net product line. The interface to the Hop Net Remote allows the Host to communicate with the Remote unit through an external cable of up to 300 feet (100 meters). Design Features The H-3000 Remote has an internally mounted 6 dBi patch antenna. The built-in antenna of the GIN-3000 case greatly eases outdoor installation since no antenna feed line cable or adapters are needed.
H-2000 Repeater, Continued Technical Specifications Refer to the following tables for the technical specifications for the H-2000.
H-2000 Repeater, Continued Power Power for the repeater VDC. The current consumption of the repeater depends on the radio operating mode and the state of battery charge, but is typically 330 mA. Battery backup is provided to maintain power during outages. Approximate operating time from this battery is 2 hours. A trickle charge is maintained on the battery whenever the unit is externally powered.
H-2000 Repeater, Continued Antenna and Power Connections There are three external connections going into the repeater enclosure and one internal connection: » Two RF ports * A 2-pin Conceal power connector ® An internal DB-9 connector RF Antenna Connectors The two RF antenna connectors are standard TNC. These ports connect to the output of each internal modem.
H-1500 Indoor Base/Remote Station, Continued 1-12 Environmental Specification Value Temperature Range * 20°t0 70°C Humidity * 95% at +40°C, Non-condensing Hop Net Family of Products 800226 Rev.
H-1500 Indoor Base/Remote Station, Continued LED Status The five LED indicators are included on the front panel to provide the status of the H-1500 Indoor Base/ Remote station. See the illustration below. These built-in flow control indicators allow you to quickly check the operational status. PWR CFG The table below describes the function of each LED.
H-1000 Outdoor Base/Remote Station, Continued 1-8 Environmental Specification Value Temperature o 20° 70°C Humidity 40°C, Non-condensing Hop Net Family of Products 800226 Rev.
H-1000 Outdoor Base/Remote Station, Continued Antenna Connection 16 The RF signal is brought in on a standard female TNC jack connector located on the front panel. Use the following guidelines when installing the antenna: « Be sure to strictly follow the antenna manufacturer's installation instructions for proper operation of the antenna. « Be sure that you use the proper polarization for a gain type antenna.
About the Hop Net Products Introduction This section provides operational information about the Hop Net products. Operating Frequency The Hop Net family operates in the 2.4 GHz ISM band that allows for license-free use and worldwide compliance. Hop Net Spread Spectrum Advantages In the frequency domain, a multi path fade can be described as a frequency selective notch that shifts in location and depth over time. Multi path fades typically occupy five percent of the band.
Overview, Continued Design Features The Hop Net modems have many advanced features: » Employ frequency hopping technology with 80 channels in the 2401 to 2480 MHz frequency range * Support RS-232 interface « Support digital addressing for up to 16 networks, with 255 remotes per network.
Contents, Continued Appendix A Mechanical Drawings Overview. H-1000 Outdoor Base/ Remote Station H-1500 Indoor Base/Remote Station . H-2000 Repeater .. .A4 H-3000 Remote A-5 FIN-3500 Adapt Appendix B Modem Command Summary Overview Network Commands . Serial Interface Commands Protocol Commands Status Commands... Memory Commands Appendix C Accessories Overview Adapter. Power SUPPLY iv Contents 800226 Rev.