i PDL Base Radio Modem User's Guide Revision 0.2 (preliminary) May 1999 Copyright 1999 Pacific Crest Corporation Document M00522 Pacific Crest Corporation 990 Richard Avenue, Suite 110 Santa Clara, CA 95050 (408) 653-2070 (408) 748-9984 Fax sales@paccrst.com http://www.paccrst.
ii Contents Contents............................................................................................................. ii Getting Acquainted.............................................................................................1 Introduction ..................................................................................................1 Main Components ........................................................................................2 Compliance....................................
Pacific Crest Corporation – PDL Base User’s Guide 1 Getting Acquainted Introduction Radio modems provide wireless data communication between remote systems in situations where wireline communication is difficult or impossible. For field operations such as remote monitoring and control, DGPS, and data telemetry, the radio modem provides the ideal link between remote computers, instruments and other RS-232 devices. The PDL Base is a high-speed, radio modem designed for field, mobile or office operation.
2 Pacific Crest Corporation – PDL Base User’s Guide Main Components This section will acquaint you with the physical attributes of the PDL Base radio modem. Figures 1 and 2 show the standard PDL Base unit.
Pacific Crest Corporation – PDL Base User’s Guide 3 Digital Display – A seven-segment LED used to indicate channel status and other diagnostic information. TX Indicator – An LED indicator which will light when the unit is transmitting data. RX Indicator – An LED indicator which will light when the unit is receiving data. AMP POWER Indicator – An LED indicator which shows the selected RF output level. The desired level is selected with the Amp Power Selector Switch located on the back panel.
4 Pacific Crest Corporation – PDL Base User’s Guide Amp Power Selector Switch Antenna Connector RS-232 / Power Connector Figure 2 – PDL Base: Back View PDL Base Back Panel Features Amp Power Selector Switch – An environmentally sealed toggle switch used for selecting the desired RF output level. The output power is 2 Watts when the switch is in the “LO” position, and 35 Watts when in the “HI” position.
Pacific Crest Corporation – PDL Base User’s Guide • • • • • 5 Pin 1 -- Power Pin 2 -- Ground Pin 3 -- TX Data Pin 4 -- Signal Ground Pin 5 -- RX Data 1 2 5 3 4 Figure 3 – PDL Base: RS-232 / Power Connector Compliance
6 Pacific Crest Corporation – PDL Base User’s Guide The PDL BASE is designed to be compliant with many worldwide regulatory requirements, including FCC CFR Title 47 Part 90 and Part 15. Changes or modifications not expressly approved by Pacific Crest Corporation could possibly void the user’s authority to operate this equipment. Note: this equipment has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of the FCC Rules.
Pacific Crest Corporation – PDL Base User’s Guide 7 The FCC vigorously pursues and prosecutes those who operate unlicensed radio stations. All radio operation must be authorized and licensed by the FCC. Without the cooperation of the radio user community, the airwaves would soon become overcrowded, making operations such as data transmission impossible.
8 Pacific Crest Corporation - PDL Base User’s Guide Electrical Considerations Power Supply The PDL Base has power supply connections on pins 1 and 2 of the RS-232 / Power connector. Supply voltages greater than 16 Volts will cause the unit to shut off. Pins 1 and 3 are connections to the power ground and RS-232 interface signal grounds respectively. Note that these pins are tied to a common point on the PDL BASE.
Pacific Crest Corporation – PDL Base User’s Guide 9 Appendix A - Cables and Connectors RS-232 / Power Connector The RS-232 / Power connector is a 5 pin LEMO #1 shell receptacle. Use Pacific Crest part number A00470 as a standard programming cable. RF Connector The RF connector is a 50 Ohm female BNC connector.
10 Pacific Crest Corporation - PDL Base User’s Guide General Interface RS-232 compatible interface configurable for 150 to 38,400 baud operation with one start, 8 data, optional parity, and one stop bit. Power Supply Power supplied externally through the RS-232 / Power connector (9 - 16 VDC). Typical power consumption during TX is 110 Watts and 1.9 Watts during RX. Radio Transceiver Frequency Ranges Contact factory for currently available frequency ranges. Frequency Control Synthesized 12.
Pacific Crest Corporation – PDL Base User’s Guide Link Rate and Modulation 19,200 bps and 9600 with 4 level FSK. 9600 bps and 4800 with GMSK. Transmission Protocols Transparent, packet switched, fast asynchronous, digipeater, TRIMTALK ™. Forward Error Correction (FEC) and Detection Hamming code (12, 8) with data interleaving. Environmental Size 6.23" W x 2.77" H x 6.58" L (15.8 cm W x 7.0 cm H x 16.7 cm L) Weight Standard enclosure – 2.96 lbs. (1.34 Kg) Shock and Vibration Per IEC 68-2-55.
