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Related Manuals for Dataradio Gemini PD
Summary of Contents for Dataradio Gemini PD
- Page 1 Gemini / PD Mobile Radio Modem Service Manual version 0.03 PRELIMINARY The entire contents of this manual and the Radio Service Software described in this manual are copyright 1998 by Inc. DATARADIO Copyright Inc. DATARADIO November 1998 part no.: 120 1020110-003...
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Page 2: Table Of Contents
Table of Contents PRODUCT OVERVIEW........................... 1 1.1 I ............................1 NTENDED UDIENCE 1.2 G ............................ 1 ENERAL ESCRIPTION 1.3 C ............................... 1 ONFIGURATION 1.4 F ........................2 ACTORY ECHNICAL UPPORT 1.5 P ............................2 RODUCT ARRANTY 1.6 R ............................2 EPLACEMENT ARTS 1.6.1... - Page 3 What's New in Version 0.02 GPS Diagnostics procedure History Version 0.1: First preliminary version Version 0.2: • Unit specification revised • Typo correction...
- Page 4 Definitions The following terms are used throughout this document. Item Definition Data Communications Equipment. This designation defines the direction (input or output) of the various RS-232C interface signals. Modems are always wired as DCE. See also DTE. Data Terminal Equipment. This designation defines the direction (input or out- put) of the various RS-232C interface signals.
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Page 5: Product Overview
Configuration General Description Operating characteristics of the Gemini/PD Gemini/PD is a mobile radio-modem aimed are configured by Dataradio System at the public safety and public utility markets Engineering for communication protocols to meet demand for high speed and high and network settings. -
Page 6: Factory Technical Support
Please give DATARADIO Inc. the representative the name of a contact per- 5500 Royalmount Ave, suite 200 son who is familiar with the problem,... -
Page 7: Led Indicators
We recommend the use of a shielded 9-wire 2.1.1 LED Indicators cable with all pins connected. These ports The Gemini/PD has two LED indicators: can be used for unit configuration, mainte- nance & adjustment as well to connect user LED’s Indicates Description applications. -
Page 8: Adjustments And Maintenance
Tests & Adjustments 3. Adjustments and Maintenance 3.4.1 Preliminary Verification Before performing any adjustment, verify the per- Overview formance of the unit as shown in the Table 1. This chapter outlines the basic adjustment pro- Important note: Before proceeding make sure that cedures required upon initial installation and the service monitor has been calibrated recently and thereafter at prescribed maintenance intervals. - Page 9 Table 1: Tests and Adjustments Full & Half ChannelUnits STEP ACTION EXPECTED MEASURE IF NOT? RESULTS at WITH 25° ° ° ° C 40 watts Service monitor Check the RSS maximum power Output Power set to read power output setting: must be set to 255 +10%, -20% Press PTT Channel x (means 40W).
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Page 10: Opening The Unit
3.4.4 Opening the Unit 1. Remove the two Philips screw from the unit top cover. 2. Remove the top cover by lifting it from the rear. 3. Slide the cover out of the case. Figure 1 Gemini/PD Top view (cover removed) 13.6Vdc Power connector Main Antenna connector J400... -
Page 11: Gps Diagnostics Procedure
3.4.5 GPS Diagnostics Procedure OVERVIEW The detection of the POSition message shows a GPS CONNECTED LED. After about three minutes, detection of the one Pulse Per Second (PPS) should flash the POSITION ACQUIRED indicator, this means that the GPS has a position solution. If the GPS has a good view of the sky and still has not generated any position solution within three minutes (it may take up to 10 minutes or more if the sky view is partially blocked.) the following trouble-shooting procedures should be undertaken to isolate the fault:... -
Page 12: Specifications
4. Specifications GENERAL 800 MHz Frequency Tx 400 - 512 MHz 806-824, (821-824) Channel spacing 12.5, 20 or 25 kHz Frequency Control Digital Synthesizer / uController Frequency Stability 1.5 ppm Operating temperature -30°C to +60°C (25°C nominal) @ 95% non-cond. RH Modes of Operation Simplex or Half Duplex Number of channels... - Page 13 –115 dBm at 9600 b/s full channel better than –112 dBm at 16000 b/s full channel better than –109 dBm at 19200 b/s full channel Protocol Dataradio Proprietary DISPLAY and CONTROLS 2 status LEDs RX/TX, PWR FCC / IC...
- Page 14 120 10503-201 T-96S Technical Manual...