SNR900.
SNR900.book Page ii Friday, December 3, 2004 2:02 PM Contact Information Trimble Geomatics and Engineering Division 5475 Kellenburger Road Dayton, Ohio 45424-1099 U.S.A. 800-538-7800 (toll free in USA) +1-937-233-8921 Phone +1-937-233-9004 Fax www.trimble.com Copyright and Trademarks © 2001–2004, Caterpillar Trimble Control Technologies LLC. All rights reserved.
SNR900.book Page iii Friday, December 3, 2004 2:02 PM Contents 1 Introduction Welcome . . . . . . Related Information . Technical Assistance Your Comments . . . 2 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 3 3 Introduction . . . . . . . Hardware Specification . SNR900 Description . . Features. . . .
SNR900.book Page iv Friday, December 3, 2004 2:02 PM Contents 4 Installing the SNR900 Network Introduction . . . . . . . . . . . . . . . . . . . . . . . Physical Description . . . . . . . . . . . . . . . . . . Connectors and Indicators . . . . . . . . . . . . Mounting the SNR900 on a Machine . . . . . . . . . . Machine Mount Kit (PN 35087-00) . . . . . . . Cabling Configurations . . . . . . . . . . . . . . . . . Power and I/O Cable for Machine Installations .
SNR900.
SNR900.book Page 2 Friday, December 3, 2004 2:02 PM 1 1.1 Introduction Welcome This manual describes how to set up and use the SNR900 radiomodem. This publication assumes that you are know how to use the Microsoft® Windows® operating system. 1.2 Related Information Sources of related information include the following: 2 • Readme.txt file – a Readme.txt file contains information added after the documentation was completed. To read this file, double-click it or use a text editor to open it.
SNR900.book Page 3 Friday, December 3, 2004 2:02 PM Introduction 1.3 1 Technical Assistance If you have a problem and cannot find the information you need in the product documentation, contact your local dealer. Alternatively, do one of the following actions: 1.4 • Request technical support using the Trimble website at www.trimble.com/support.html • Send an e-mail to trimble_support@trimble.
SNR900.
SNR900.
SNR900.book Page 6 Friday, December 3, 2004 2:02 PM 2 2.1 Getting Started Introduction The SNR900 radio-modem broadcasts raw GPS data in Compact Measurement Record (CMR) format from a reference receiver to one or more roving receivers for precise machine positioning. The SNR900 is compatible with the Trimble SiteNet™ 900 and TRIMCOMM™ 900 radio for broadcasting and receiving Radio Technical Commission for Maritime Services (RTCM) or CMR data.
SNR900.book Page 7 Friday, December 3, 2004 2:02 PM Getting Started 2.3 2 SNR900 Description The SNR900 is a frequency-hopping, spread-spectrum radio unit and data modem packaged in a rugged, waterproof, metal case and is designed to withstand severe environmental stress. 2.3.1 Features • Low latency CMR transmission • Compatible with SiteNet and TRIMCOMM radio networks • Upgradeable software • Forty selectable networks • License-free operation in the U.S.
SNR900.book Page 8 Friday, December 3, 2004 2:02 PM 2 2.3.2 Getting Started Frequency Band The SNR900 operates in the 902 to 928 MHz frequency band. It is certified for unlicensed use in this band as a transmitter pursuant to 47 C.F.R. §§ 15.247, 15.249 (1993) (unlicensed, low-power devices) Subpart C of Part 15 of FCC Rules regarding Spread Spectrum Systems for the United States. License-free operation in Canada is covered by RSS-210 of Industrie Canada.
SNR900.
SNR900.book Page 10 Friday, December 3, 2004 2:02 PM 3 3.1 Configuring the SNR900 Introduction The SNR900 is a data modem and a radio in one unit. Two units can provide a radio data link between Trimble GPS receivers. 3.2 Default Settings The SNR900 serial ports are initially configured with the following settings: • 38400 baud • 8 data bits, no parity • 1 stop bit The SNR900 is also initially configured as a rover; its network setting is Network 1.
SNR900.book Page 11 Friday, December 3, 2004 2:02 PM Configuring the SNR900 3.3.1 3 Connecting to the SNR900 1. Connect a SNR900 machine service cable to the SNR900. 2. Connect the I/O DB-9 connector of the service cable to a serial port on your office computer. Note – Figure 4.7 on page 27 shows an infrastructure cable (PN 38968-25) connected to the SNR900. Figure 4.10 on page 30 shows the service cable (PN 40942-xx) connected to the SNR900 and an office computer. 3. 3.3.
SNR900.book Page 12 Friday, December 3, 2004 2:02 PM 3 Configuring the SNR900 The following dialog appears: 12 3. Select the Configure radio option in the Operations group and click Next. 4. Click Finish on the next screen to establish a connection with the radio.
SNR900.book Page 13 Friday, December 3, 2004 2:02 PM Configuring the SNR900 3 5. When WinFlash has successfully connected to the radio, the Properties window appears: 6. From the Properties window, configure the Network number, Radio Mode, and Port settings. Once these settings are correct, click Set to send the settings to the radio. The following dialog appears: 7. To finish, click Exit. To make further changes, click Menu. The Operation Selection dialog shown in Step 2 on page 11 appears.
SNR900.book Page 14 Friday, December 3, 2004 2:02 PM 3 3.3.3 Configuring the SNR900 Network To change which GPS base station a SNR900 listens to, set the Network number. The SNR900 offers 40 different Network numbers. Note – If you only have one GPS base station on your site, set all your radios to the same Network number. If you have more than one GPS base station on your site, each GPS base station must be on a separate radio network. Select a different Network number for each radio network.
SNR900.book Page 15 Friday, December 3, 2004 2:02 PM Configuring the SNR900 3.3.6 3 Defaults Table 3.1 shows the default factory settings for the SNR900. Table 3.1 3.4 SNR900 default settings Item Default setting Network number Network 1 Radio mode Rover Baud rate 38400 Parity None Diagnostics and Firmware Upgrade Use WinFlash to download a diagnostics file from the SNR900 to an office computer or to upgrade the radio firmware.
SNR900.
SNR900.
SNR900.book Page 18 Friday, December 3, 2004 2:02 PM 4 4.1 Installing the SNR900 Network Introduction Trimble recommends that you read this chapter before installing your SNR900 radios. 4.2 Physical Description The SNR900 radio-modem is encased in a rugged, waterproof metal case. It has an antenna mount on the top cap, and a connector and LED on the bottom cap. The physical aspects of SNR900 hardware are outlined below, followed by details covering interface connections and antenna installations. 4.
SNR900.book Page 19 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4 The LED can be orange and/or green depending on the situation, as shown in Table 4.1. Table 4.1 Operational status LED Color Status Orange (solid) Power is available. Orange and green (both solid) With the SNR900 configured as a base radio (that is, a source of GPS), power is available. The base is always considered to be synchronized. “Sychronized” means that the radio can receive and transmit data.
SNR900.book Page 20 Friday, December 3, 2004 2:02 PM 4 Installing the SNR900 Network Contact tip Antenna mount Figure 4.2 4.3 SNR900 top cap Mounting the SNR900 on a Machine When mounting the SNR900 on a machine consider the following: – Reduce damage by minimizing shock and vibration to the SNR900: Mount the radio-modem on a solid part of the cab. – Locate the best antenna position: Mount the entire antenna above the roofline so that it has an uninterrupted view.
SNR900.book Page 21 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4.3.1 4 Machine Mount Kit (PN 35087-00) The machine mounting kit for the SNR900 comprises: • Radio mount bracket (upper) • Radio mount bracket (lower) • Machine mount adapter plate (with U-bolts) • Rubber shock mount kit Figure 4.3 shows the SNR900 mounting kit and how the parts fit together. Radio mounting bracket (upper) PN 41529 Adapter plate PN 71105-00 Figure 4.
SNR900.book Page 22 Friday, December 3, 2004 2:02 PM 4 Installing the SNR900 Network Mounting the SNR900 To mount the SNR900 onto a machine: 1. Bolt the SNR900 into the radio mounting bracket (upper and lower brackets). Ensure that the radio mounting screws are all fitted with washers and lock washers. 2. 3. B 22 Securely mount the adapter plate to the machine. Do one of the following actions: – Use existing weld bosses (see Figure 4.
SNR900.book Page 23 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4 Figure 4.4 shows a SNR900 mounted at the rear of a cab roof. Notice how this installation ensures that all of the antenna is above the roof of the cab. Figure 4.
SNR900.book Page 24 Friday, December 3, 2004 2:02 PM 4 4.4 Installing the SNR900 Network Cabling Configurations The SNR900 is typically configured as a rover, but the cables and adapters necessary for other configurations are also available. Table 4.2 summarizes the cabling items available or provided with the SNR900 unit or available accessories. Table 4.2 4.4.
SNR900.book Page 25 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4 The straight connector attaches to the bottom cap of the SNR900, and the angled connector attaches to the 8-pin Bendix connector of the GPS receiver. SNR900 PN 32942-17 8-pin Bendix 8-pin Bendix MS860 GPS receiver PN 38920-60 Figure 4.
SNR900.book Page 26 Friday, December 3, 2004 2:02 PM 4 4.4.2 Installing the SNR900 Network Infrastructure/Base Station Power and I/O Cable The cable shown in Figure 4.6 is used for base station and repeater installations of SNR900s. Cables come in the lengths shown in Table 4.3. Table 4.3 Available cable lengths Part number Cable length 38968-25 7.5 m (25 ft) 40942-03 1 m (3 ft) 40942-40 12 m (40 ft) 40942-99 30 m (99 ft) Note – Most installations of infrastructure radios require either a 7.
SNR900.book Page 27 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4 The 7.5 m (25 ft) infrastructure cable (PN 38968-25) connects directly to the SNR900. The 12-pin Conxall connector connects directly to the Trimble MS750™ GPS receiver with a split to power via a TA-3 connector. This cable also splits to a DBF-9, which can be used to configure the SNR900. When you install this cable with a MS750 base station, the complete cabling configuration looks similar to that shown in Figure 4.7.
SNR900.book Page 28 Friday, December 3, 2004 2:02 PM 4 Installing the SNR900 Network The DB-9 connectors can connect to a GPS receiver and to a PC at the same time. This is particularly useful for troubleshooting. This cable requires its own power for the radio. It has no Conxall connector for the MS750 GPS receiver. You can connect it to the MS750 with the hammerhead connector B1/B2 cable PN 37382 that comes with the base (reference) station kit.
SNR900.book Page 29 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4 When you install cable 40942-xx with a MS750 base station, the complete cabling configuration looks similar to that shown in Figure 4.9. Note – The 40942-99 cable is the 99 ft base station cable for the SNR900 radio. To fit the SNB900 radio, you need an adapter.
SNR900.book Page 30 Friday, December 3, 2004 2:02 PM 4 4.4.3 Installing the SNR900 Network Machine Service Cable Figure 4.10 shows cable 40942-xx when used to configure SNR900 radios with a laptop. SNR900 DB-9 GPS 8-pin Bendix DB-9 I/O Cable 40942-40 (= 12 m or 40 ft) 40942-99 (= 30 m or 99 ft) 1 shell 5-pin Lemo Figure 4.
SNR900.book Page 31 Friday, December 3, 2004 2:02 PM Installing the SNR900 Network 4.5 4 Antenna Description The standard SNR900 antenna is a 0 dB, low-profile antenna. An optional infrastructure installation kit comes with an antenna base and 5 dB whip antenna tip. The 5 dB antenna measures 81 cm (32") in length, including the base. See Figure 4.11. 0 dB low-profile antenna SNR900 Figure 4.
SNR900.book Page 32 Friday, December 3, 2004 2:02 PM 4 4.5.1 Installing the SNR900 Network Antenna Considerations Note – Please use care when removing the radio antenna. The SNR900 antenna contact tip is designed for maximum efficiency and very low loss. To maintain its integrity, do not remove the top cap from the radio housing. Make sure that you mount the base and repeater radios as high as possible.
SNR900.
SNR900.book Page 34 Friday, December 3, 2004 2:02 PM A A.1 Technical Specifications Technical Information Table A.1 shows the technical information for the SNR900 radio-modem. This information is subject to change without notice. Table A.1 Technical information Specification Physical: Size Weight Environmental: Operating temperature Storage temperature Humidity Vibration Shock: Operational Survival 85 mm (3.4") W x 250 mm (10") H 0.9 kg (2.
SNR900.book Page 35 Friday, December 3, 2004 2:02 PM Technical Specifications Table A.1 A Technical information (continued) Specification Radio-modem performance Range Optimal Typical Frequency range Networks Transmit power Wireless data rates Modes 10 km (6 miles), line-of-sight 3–5 km (2–3 miles) Varies with terrain and operating conditions. Repeaters may be used to extend range.
SNR900.book Page 36 Friday, December 3, 2004 2:02 PM A A.2 Technical Specifications Pinout Information Figure A.1 shows the pinout information for the 8-pin male Bendix connector on the base of the SNR900 radio-modem. A G F B H E Pin A B C D Figure A.1 Function Power to radio GND RS-232 TXD2 RS-232 RXD2 C D Pin E F G H Function CAN Hi RS-232 TXD3 RS-232 RXD3 CAN Lo SNR900 connector (8-pin Mil-Spec) Note – This pinout is the same as that on the SiteNet 900 radio.
SNR900.
SNR900.book Page 38 Friday, December 3, 2004 2:02 PM Index H P hardware, performance 6 humidity, specification 34 parity 14 performance specification 35 pinout information 36 power 19 cables 24 consumption 34 I/O cable 25 infrastructure/base station 26 requirements 6 I indicator, LED 19 installing.
SNR900.
SNR900.
