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FH915
Operator's Manual
Version 2.1
Last Revised January 19, 2011
All contents in this manual are copyrighted by JAVAD GNSS.
All rights reserved.The information contained herein may not be used, accessed, copied,
stored, displayed, sold, modified, published, or distributed, or otherwise reproduced without express written
consent from JAVAD GNSS
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Table of Contents
Summary of Contents for Javad FH915
- Page 1 Version 2.1 Last Revised January 19, 2011 All contents in this manual are copyrighted by JAVAD GNSS. All rights reserved.The information contained herein may not be used, accessed, copied, stored, displayed, sold, modified, published, or distributed, or otherwise reproduced without express written...
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Page 3: Table Of Contents
3.1. FH915 connection ........ - Page 4 Appendix D. Warranty Terms ..........37 www.javad.com...
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Page 5: Preface
Thank you for purchasing this product. The materials available in this Manual (the “Manual”) have been prepared by JAVAD GNSS for owners of JAVAD GNSS products. It is designed to assist owners with the use of the FH915 and its use is subject to these terms and conditions (the “Terms and Conditions”). Note: Please read these Terms and Conditions carefully. -
Page 6: Regulatory Information
Conditions. The user is granteJAVAD GNSSd a personal, non-exclusive, non-transferable license to use such Software under the terms stated herein and in any case only with a single FH915 or single computer. You may not assign or transfer the Software or this license without the express written consent of JAVAD GNSS. -
Page 7: Canadian Emissions Labeling Requirements
For more detailed information about the take-back and recycling of this product, please contact your supplier where you purchased the product or consult. www.javad.com... -
Page 8: Technical Assistance
Canadian Emissions Labeling Requirements Technical Assistance If you have a problem and cannot find the information you need in the product documentation, contact your local dealer. Alternatively, request technical support using the JAVAD GNSS World Wide Web site at: www.javad.com. www.javad.com... -
Page 9: Chapter 1. General Description
Sleep Mode 300 mW 500 W Standby Mode, ordered by SLEEP input pin 1. The supply voltage (pins 15 and 16 in user interface connector,) must be 3.6 to 4.2VDC to provide RF output power >500mW (licensed operation mode). www.javad.com... -
Page 10: Antennas
Antenna type depends on the site requirements, and may be directional or omni-directional. Note that to support 8 miles distance range between Base station and FH915 unit, an antenna mast should elevate the base antenna a minimum of 20 feet above the average level of the terrain. -
Page 11: Chapter 2. Product Features
The firmware of the FH915 radio transceiver resides in a flash memory. The updating of the radio transceiver programs is entirely software-based. The flash memory is re-programmable through an UART interface or over the air. -
Page 12: Operating At Spread Spectrum Band
2.3. Modulation Technique FH915 radio transceiver uses two bands: 902-928 MHz ISM license free USA band and European CEPT license free 868-870 MHz band. In 902-928 MHz band FH915 radio uses frequency hopping transmission techniques. -
Page 13: Media Access Control (Mac)
(CMOS/TTL compatible input lines). 2.3.2. Operating Modes The operating modes for FH915 can be set through the CLI, and/or through AWLaunch. The following operating modes are available for FH915: 1. The sleep mode has automatic transmitter activation by an internal real-time clock, or by an external controller through the data interface control lines (RTS and DTR), or by the triggering of the external Sense Inputs. -
Page 14: Management Tools
(including Frame’s CRC). This provides the wireless media access protection. 2. User selectable Frequency Hopping Pattern provides another level of the wireless media access protection. At the same time it allows operators to increase the number of links deployed in the same location. www.javad.com... -
Page 15: Chapter 3. Connection
6-20 V DC, 1A Figure 3-1. FH915 connected to Evaluation Kit 3.2. Antenna connection The FH915 may be connected to external antenna using TNC to MMCX RA Antenna cable (included in the Kit). 3.3. Power connection The FH915 powered through Evaluation Kit and Power Cable (included in Kit). The Banana plugs of power cable may be connected to any available laboratory power supply, battery or other power source with power parameters, suitable for particular FH915 power specifications. -
Page 16: Serial Rs-232 Connection
Serial RS-232 connection : Evaluation Kit provides reverse polarity protection only in voltages range, specified for particular AUTION FH915. 3.4. Serial RS-232 connection A standard Null-Modem cable (included in Kit) with DB-9 Female connectors on both ends may be used to connect PC COM_X port with Serial port on adapter. -
Page 17: Chapter 4. Command Line Interface
- Unit’s Configuration files - Software Images • Uploading Unit’s Configuration files • Saving into the configuration files the configuration parameters modified through the CLI. 4.1. Command Line Interface Convention The following convention is implemented in FH915 Command Line Interface (CLI): www.javad.com... -
Page 18: Software Switching To Maintenance Mode
• Escape-Sequence: “+++” with 20 ms guard time before and after the command characters • Escape-Acknowledge: “@00<CR><LF>” 20 ms toggling on CTS control line needed to acknowledge switching from Data to Maintenance mode and vice versa. In Maintenance mode, the unit’s serial port must keep CTS line always active. www.javad.com... -
Page 19: Hardware Switching To Maintenance Mode
The powered up radio modem by default goes to Data Mode regardless of DTR control line polarity. 4.1.3. Switching to Data Mode • DTE sends the CLI command “DATAMODE<CR>” or „DATAMODE<LF>” to the unit. Note: Command “DATAMODE<CR><LF>“will be accepted as command “DATAMODE<CR>” and Data Byte=0x0A. www.javad.com... -
Page 20: Networking Commands
Parameter List 0 – Disable Forward Error Correction, a default setting (see note below) 1 – Enable Forward Error Correction (see note below) FHOP (0-9) - Frequency Hoping Pattern numbers for USA; (10-19) - Frequency Hoping Pattern numbers for Australia; www.javad.com... - Page 21 - “Half Duplex” Base (reserved) 4 - “Half Duplex” Repeater (reserved) 9 - “Transparent w/EOT” Repeater (used with GMSK and 4FSK) 10 - “Repeater” (JAVAD GNSS Proprietary Simplex) 12 - “Transparent w/EOT” Receiver (used with GMSK and 4FSK) 13 - “Transparent w/EOT”...
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Page 22: Serial Interfacing Commands
1 – 1200 baud 2 – 2400 baud 3 – 4800 baud 4 – 9600 baud 5 – 14400 baud 6 – 19200 baud 7 – 38400 baud 8 – 57600 baud 9 – 115200 baud, a default setting www.javad.com... -
Page 23: Special Commands
ALARM Note: JAVAD GNSS radio modem’s does not support data flow and parity on the maintenance serial port. MPORT operates using 8 bits in one byte fixed (not configurable). The radio modem with none-dedicated maintenance serial port must keep CTS line always active in MPORT mode (DP/MP is low). -
Page 24: Save
4.4.5. SLEEP The SLEEP command determines the sleep mode parameters. The sleeping FH915 can be activated by real-time CLK, DTR/RTS lines, and command received through TTL inputs. The user can select one, two, or all three conditions. -
Page 25: Diagnostics And Identification Commands
(range from 01 to 99) for engineering releases and alphabetic format (A to Z) for manufacturing releases BootLoader Version The INFO command without Parameter Name indicates all values: FH915 Spread Spectrum Radio Modem. Product ID =41 S/N = 11327 Hardware =2.0 Firmware =2.1.9... - Page 26 TTL_IN2 = 1 RSSI = -110 dBm BER = < 2.3E-5 FREQ = 910.000000 MHz CHAN = 10 TEMP = 70C Note: The indicated receive signal strength (RSSI) is equal to -147 dBm if there is no signal received from transmitter. www.javad.com...
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Page 27: Appendix A. Technical Specifications
Appendix A ECHNICAL PECIFICATIONS FH915 DSP based integrated Spread Spectrum Modem is the single board OEM wireless transceiver intended for SCADA, outdoor telemetry applications and transmission /receiving of differential corrections and additional information by terrestrial radio channels between two GNSS receivers. -
Page 28: Radio Receiver
Data Rate Radio Interface 7500 bps – GMSK (20 kHz Channel Spacing) 15000 bps – 4FSK Data Rate Radio Interface 4800 bps – GMSK (12.5 kHz Channel Spacing) 9600 bps – 4FSK Forward Error Correction (FEC) Convolutional code Data scrambling www.javad.com... -
Page 29: Compliance
• Embedded Firmware Compensation for Operation at Extremely Low and High Temperatures • Compact Design A.1.7. Mechanical Properties For End-product Dimensions for PCB Mounted Enclosure: 80 mm x W: 46.5 mm x H: 7.6/9.5 mm (3.15" x 1.83" x 0.3") www.javad.com... -
Page 30: External Connectors
The user ports connector is used to provide connection with an external DTE or with the PC running AWLaunch management software applications. Note: The RS232-to-TTL adapter must be used to provide physical level compatibility between COM port of PC running AWLaunch and FH915 user interface port. www.javad.com... - Page 31 As an option could be used as TTL Input Line 1. DPORT3 MDM_GRN Data Carrier Used by remotes to indicate that the remote Detect Output has successfully acquired the signal from base station: (0V) 1 – Carrier detected (synchronized) (3.3V) 0 – No carrier detected (not synchronized) www.javad.com...
- Page 32 Signal and Chassis Ground TTLI2 TTLIN TTL Input line TTL Input An internal 100K pull-up resistor is applied. VCC36 Power Supply External Regulated positive 4.0V DC from ext. Power Supply. VCC36 Power Supply External Regulated positive 4.0V DC from ext. Power Supply. www.javad.com...
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Page 33: Appendix B. Spread Spectrum Radio Usage
The quality and strength of the Spread Spectrum signals translates into range for Spread Spectrum communications. The system’s range will greatly depend on the local conditions. Topography, local communications and even meteorological conditions play a major role in the possible range of communications. www.javad.com... - Page 34 Spread Spectrum Radio Usage www.javad.com...
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Page 35: Appendix C. Safety Warnings
This product should never be used: • Without the user thoroughly understanding operator’s manual. • After disabling safety systems or altering the product. • With unauthorized accessories. • Contrary to applicable laws, rules, and regulations. FH915 ANGER SHOULD NEVER BE USED IN DANGEROUS ENVIRONMENTS www.javad.com... - Page 36 Safety Warnings General Warnings www.javad.com...
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Page 37: Appendix D. Warranty Terms
JAVAD GNSS’ Authorized Dealers During the warranty period, JAVAD GNSS will, at its option, repair or replace this product at no additional charge. Repair parts and replacement products will be furnished on an exchange basis and will be either reconditioned or new. - Page 38 900 Rock Avenue, San Jose, CA 95131 USA Phone: +1(408)770-1770 Fax: +1(408)770-1799 www.javad.com Copyright © JAVAD GNSS, Inc., 2011 All rights reserved. No unauthorized duplication.