GeminiPD Mobile Radiomodem Installation Guide Version 1.41 Preliminary – For Internal Use Only The entire contents of this manual and the Radio Installation Software described in this manual are copyright 2000 by DATARADIO Inc. Copyright DATARADIO Inc. March, 2001 Part no.
Table of Contents 1. PRODUCT OVERVIEW ...................................................................................................................................1 1.1 INTENDED AUDIENCE ........................................................................................................................................1 1.2 GENERAL DESCRIPTION .....................................................................................................................................1 1.2.1 Features ......
4.4.4.1 4.4.4.2 4.4.4.3 4.4.5 Banner Field.................................................................................................................................................. 14 Comments ..................................................................................................................................................... 15 Password ...................................................................................................................................................
What's New in this version History Version 1.41, March 2001 • Section 2.5 “Antenna” and Figure 4 “Antenna spacing” amended to show FCC’s RF Exposure Guidelines for increased Duty Cycle. Version 1.40, December 2000 • Supporting footnotes for Gemini/PD Lite model (No GPS option) added. • Section 3.2, function of DE-9F pin 9 (Aux input) corrected and clarified. • Section 4.0, re-written to support the WinRIS program. • Section 5.0, Table 5, step 4, values revised. • Section 6.
• Power output specifications for 800MHz model added to section 1.2.1 “Features”. • Main transceiver Output Power for 800MHz model added to: Table 4 “Tests, Full and Half Channel Units” and minimum value edited in the footnote. • Title of section 4.4.4.2 edited to specify that RSSI Indicator also serves as power meter. Note added to establish that the internal wattmeter is not to be interpreted as a precision instrument. • Section 4.4.4.3.
Definitions The following terms are used throughout this document. Item DCE DTE GCU GeminiPD GeminiPD Lite HDX RS-232 Simplex WinRIS 120 20110-141 Definition Data Communications Equipment. This designation defines the direction (input or output) of the various RS-232 interface signals. Modems are always wired as DCE. Data Terminal Equipment. This designation defines the direction (input or output) of the various RS-232 interface signals. Most user equipment, as well as PCs, are wired as DTE.
1. PRODUCT OVERVIEW This document provides the information required for the installation, operation and verification of the DATARADIO GeminiPD mobile radiomodem. 1.1 Parallel Decode (PD) technology (patent pending) featuring dual receivers for added decode sensitivity in multi-path and fading environments. • Sophisticated DSP-based modem design provides added system performance, fewer retries and more effective throughput. • Automatic channel changing for improved roaming capabilities.
1.3 Factory Technical Support 1.5 This product is not field serviceable, except by the replacement of a complete unit. Specialized equipment and training is required to repair the GCU board and radio modules. The Technical Support departments of DATARADIO provide customer assistance on technical problems and serve as an interface with factory repair facilities. They can be reached in the following ways: Contact Technical Support for service information before returning equipment.
ignition circuits to help prevent interference between these components and radio equipment. Try using existing holes in firewall and trunk wall and the channels above and below or beneath the doors, channels through doors and window columns that are convenient to run cables and wires. Whenever possible, install conduit in which to run the cables. 2. Installation 2.1 Planning the Installation 2.1.
Space containing radio equipment shall be isolated by a seal from the space containing the LP-gas container and its fittings. Outside filling connections shall be used for the LP-gas container. The LP-gas container space shall be vented to the outside of the vehicle. - If the installation vehicle contains such equipment, consult the dealer for the make of vehicle and enlist his aid in determining if such electronic circuits will perform normally when the radio is transmitting. 2.2.
• After drilling, remove all metal shavings before installing screws. • Do not overtighten selftapping screws. 1. Once you have found a suitable mounting position for GeminiPD, hold the unit and the unattached mounting bracket in the proposed mounting position and check that there is clearance behind the unit for the heatsink, cables, etc. Check that the position provides a large enough flat surface that the bracket will not be distorted when installed.
6. Repeat the step above for connecting the red DC power lead. 7. Attach the positive lead at the battery positive terminal. Attach the negative wire at the vehicle end of the battery ground cable. a Packard Electric “Weather-Pack” connector (DC power Connector). The DC Power connector has: • • • At position “A”, the smaller red switch-sense wire (commonly to ignition) At position “B”, the blue ground wire At position “C”, a larger red B+ DC power wire (MUST be unswitched) 13.
2.5 Antenna MPE To meet the FCC’s RF Exposure Guidelines, the main transmitter antenna must be vehicle-mounted to provide a separation distance of 50 cm or more from all persons and the antenna gain must not exceed 5dB to satisfy RF exposure requirements. 50cm 19.7in. T R ≥24in. 2.5.1 Recommended tools and supplies • • • • ≥5/8λ λ (UHF: 18"/46cm 800MHz: 9"/23cm) G circle cutter hole saw or socket punch for antenna Mini-UHF Crimp tool Figure 4 - Antenna spacing 2.5.
• Connect DC Power cable’s connector to PD Gemini ’s until you hear a click as the two parts snap together. 1. Route good quality 50-ohm coaxial cables (e.g. RG-223) from each of the selected antenna positions to the position where the GeminiPD unit is mounted. • Re-check that all other connections are secure (antennas, PC, etc.) • Switch vehicle ignition ON. 2. Terminate the end at each of the antenna positions with the appropriate connector for the antenna used and make the connection.
3. Operating Description 3.1 Front & Rear Panels The front panel includes: • One mini-UHF type female antenna connector for the auxiliary receiver • One SMA type female connector for the GPS receiver (not installed on Gemini • Two LED indicators PD Lite model) • Three DE-9F RS232 ports The rear panel includes: • One mini-UHF type female antenna connector for the main transceiver • One 3-pin pigtailed DC Power connector with ignition sense Gemini/PD RX PWR PGM RX TX PC/SETUP 2.
Table 1 - Gemini PD LEDs indications Gemini PD LEDs indications Special Errors Normal Power-on Sequence (LEDs are paired) PWR RX / TX Red Red Amber Off Indication Normal boot-up start (10 to 27 sec.) Then 8 seconds to completing boot-up Normal Operation (LEDs are independent) PWR Indication RX / TX Green* Normal ready state Off Amber* 1 Pulse/sec.
4.2 4. WinRIS program The Windows Radio Installation Software (WinRIS) program is used to: • • • Connect a suitable 9-conductor straight RS-232 cable, between the unit’s front-mounted PC/Setup port and the RS-232 port of the PC or portable computer that will be running Gemini.exe program. PD Check and troubleshoot Gemini . Save an existing configuration. Upload files for field-configuring units (Requires intervention with technical support).
Figure 6 - WinRIS window 4.3 ! Window This program uses one main display screen only. Placing the cursor over a Toolbar or Button generates a ScreenTip. Referring to Figure 6, starting from top and moving down to the bottom, the screen display is made up of: • ! ! A Menu bar, containing the menu names listed below. They give access to command options. Unavailable commands are shown in light gray color. Shortcut keys are listed whenever available.
! ! and to the right of a bar separator, the: About button and the Context-sensitive Help button • An Indicator and Button bar, located immediately below the Toolbar row, it contains two circular indicators ! DSR signal is High indicator ! CTS signal is High indicator and three buttons for commonly used tasks as follows.
• 4.4.3.1 Download and automatically save the connected unit’s configuration setting to a file named with the unit' serial number: The WinRIS status bar will then report “All parameters are successfully retrieved and saved in file [unit' s/n].GM2. Any previous configuration in the program is overwritten. 1- On the menu bar, select “File”, then the “Put From” command or press the “Put From” button on the Toolbar. 2- In the “Open” window, locate the drive, directory and file name of the relevant file.
GeminiPD's firmwares resides in flash EPROM and are designed to allow field upgrades. Clearing a Password is done by entering 32 zeros. The Dataradio supplied password algorithm is designed to thwart the casual observer only. It provides a limited form of data privacy. Therefore, if your security requirements are high, Dataradio urges you to use external encryption technology (such as Data Encryption Standard (DES)) in the Host and Mobiles computers.
4.4.5.2 4.4.5.4 CTS signal is High indicator The Radio Signal Strength Indicator (RSSI) bar graph usually displays in twin-columns the relative strength (in dBm) of an incoming RF signal on the selected channel. The left column indication, labeled "I", shows the transceiver RX signal (rear mini-UHF connector). The right column indication, labeled "II", shows the auxiliary RX signal (front mini-UHF connector). Meter precision is usually better than 3 dBm.
ON (<5% of forward power or as specified by System Eng.). 4.4.5.5.2 The program sends a test query and continues transmitting pings at brief intervals. As soon as a Ping test signal is returned from the address selected, the status bar displays: Modulated Carrier • • Test transmission generates a carrier modulated with 1kHz sinewave, at deviation level that depends on model and network speed: “Ping Successful” and pinging stops.
Warning and Caution messages appear in popup sub-windows. To close these message boxes, press the ESC key. Three boxes on the right of the status bar indicate which of the following keys are latched down: Indicator CAP NUM SCRL Description The Caps Lock key is latched down. The Num Lock key is latched down. The Scroll Lock key is latched down.
5. Trouble-Shooting and Testing 5.3 About three minutes after ignition is turned-on, the PWR LED on the GeminiPD front panel should flash in amber color at the rate of one pulse per second.1 This indicates that the GPS has acquired the sky position of a sufficient number of satellites to arrive at a ground position solution. The checks described below should be done at annual intervals or whenever deterioration in performance is noted. 5.
Table 5 - Tests, Full & Half Channel Units CHECKLIST STEP ACTION EXPECTED RESULTS at 25°°C MEASURE WITH IF NOT? GeminiPD units are set and characterized at the factory to optimize performances. It is not recommended to try to readjust the units. 1 Power-up LED Sequence 2 Connect and save config as per Table 1 - GeminiPD LEDs indications as per section 4.4.
6. Specifications GENERAL UHF 1 800 MHz 806 – 824 MHz (821-824) 1 851 – 869 MHz (866-869) Frequency Tx 403 - 512 MHz Frequency Rx 403 - 512 MHz Channel spacing Frequency Control Frequency Stability Operating temperature Modes of Operation Number of channels Supply voltage Circuit Protection RX Current at 13.6 VDC TX Current at 13.6 VDC TX/RX separation Nominal Dimensions Weight: RF input/output Impedance RF connector 12.5 or 25 kHz Digital Synthesizer / uController 1.
TRANSMITTER Power output UHF = 10-40 watts Duty cycle 800 MHz = 5-35 watts 20% @ full power, 30 secs. max. TX time (subject to FCC MPE limit) Conducted Spurious Frequency stability -75 dBc (-38 dBm @10 W) typical 1.
Appendix 1 - "Officer Requires Assistance" alarm function The contents of this appendix are also available as Technical Instruction Sheet 009 (TIS009), document part number 122 20110-009 dated December 20, 2000. Overview The DTE Port Interface pin 9 (AUX) on DEV-2 is used for the “Officer Requires Assistance” alarm function. Intended Audience This document is designed for use by System Integrators.
