EMS Technologies 0A5DATA1900 pcs data transmitter User Manual 03 0096 Manual
EMS Technologies pcs data transmitter 03 0096 Manual
users manual
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| Date Submitted | 2004-05-26 00:00:00 |
| Date Available | 2004-05-18 00:00:00 |
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Type Acceptance Test Report Broad Band PCS Transceiver FCC ID: DNY0A5DATA1900 FCC Rule Part: 24E ACS Report Number: 03-0096-24TA Manufacturer: EMS Wireless Model: DataNex Installation and Operators Guide 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 EMS Wireless DataNex™ Data-20 Digital Radio User Reference Manual 2850 Colonnades Court NW Norcross, GA 30071 Phone: 770-582-0555 Fax: 770-729-0075 Table of Contents ii Document Number: Rev: A Last Saved NXE1 Manual Dwg # Section Data-20 DataNex Drawing No: ; Revision Levels: REV Revised / Released Reason SN NEW EMS Wireless, DATA-20 Digital Radio iii Table of Contents WARNINGS, CAUTIONS, AND GENERAL NOTES This product conforms to FCC Part 15. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help.” In accordance with FCC regulations regarding human exposure to radiofrequency energy, this device shall be installed such that a minimum separation distance of 20cm is maintained between it and general population. The antennas used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Cet appareillage numérique de la classe B répond à toutes les exigences de l'interférence canadienne causant des règlements d'équipement. L'opération est sujette aux deux conditions suivantes: (1) ce dispositif peut ne pas causer l'interférence nocive, et (2) ce dispositif doit accepter n'importe quelle interférence reçue, y compris l'interférence qui peut causer l'opération peu désirée. DataNex EMS Wireless, DATA-20 Digital Radio Table of Contents iv Table of Contents SYSTEM DESCRIPTION .......................................................................................................................1-1 1.1 Introduction ..................................................................................................................................................... 1-1 1.2 System Features ............................................................................................................................................... 1-1 1.3 Typical Configurations.................................................................................................................................... 1-2 1.3.1 Data Rate and Interface ............................................................................................................................. 1-2 1.3.2 Standalone Operation ................................................................................................................................ 1-2 1.3.3 Hot Standby (Protected) Operation............................................................................................................ 1-3 1.4 Regulatory Notices........................................................................................................................................... 1-3 1.5 System Description (QAM)............................................................................................................................. 1-4 1.5.1 Introduction ............................................................................................................................................... 1-4 1.5.2 QAM Modulator/IF Upconverter............................................................................................................... 1-5 1.5.3 RF Upconverter ......................................................................................................................................... 1-6 1.5.4 Power Amplifier (PA) ............................................................................................................................... 1-7 1.5.5 RF Downconverter .................................................................................................................................... 1-7 1.5.6 QAM Demodulator/IF Downconverter ..................................................................................................... 1-8 INSTALLATION .....................................................................................................................................2-1 2.1 Unpacking ........................................................................................................................................................ 2-1 2.2 Notices............................................................................................................................................................... 2-1 2.3 Rack Mount...................................................................................................................................................... 2-2 2.4 Duplexer: Internal/External ........................................................................................................................... 2-2 2.5 Rear Panel Connections & Indicators ........................................................................................................... 2-3 2.6 Power Requirements ....................................................................................................................................... 2-5 2.6.1 Power Supply Card Slot Details ................................................................................................................ 2-5 2.6.2 AC Line Voltage........................................................................................................................................ 2-5 2.6.3 DC Input Option ........................................................................................................................................ 2-6 2.6.4 Fusing ........................................................................................................................................................ 2-6 2.7 Power-Up Setting............................................................................................................................................. 2-6 2.8 Data Interface .................................................................................................................................................. 2-8 2.8.1 4xE1/T1 MUX Channel Configurations.................................................................................................... 2-8 2.9 Hot Standby (Protected) Configuration ........................................................................................................ 2-9 2.9.1 Hot/Cold Standby Modes ........................................................................................................................ 2-10 2.9.2 Hot Standby Control using the TP64...................................................................................................... 2-11 2.9.3 Hot Standby Control with Single Unit..................................................................................................... 2-14 2.10 Site Installation .............................................................................................................................................. 2-15 2.11 Antenna/Feed System .................................................................................................................................... 2-16 2.11.1 Antenna Installation................................................................................................................................. 2-16 3.1 FRONT PANEL OPERATION ...............................................................................................................3-1 Introduction ..................................................................................................................................................... 3-1 3.2 Front Panel Operation .................................................................................................................................... 3-1 3.2.1 LCD Display.............................................................................................................................................. 3-2 3.2.2 Cursor and Screen Control Buttons ........................................................................................................... 3-2 3.2.3 LED Status Indicators................................................................................................................................ 3-3 DataNex EMS Wireless, DATA-20 Digital Radio v Table of Contents 3.2.4 Screen Menu Tree Structure ...................................................................................................................... 3-3 3.3 Main Menu ....................................................................................................................................................... 3-4 3.3.1 Launch Screens.......................................................................................................................................... 3-5 3.4 Screen Menu Summaries ................................................................................................................................ 3-9 3.4.1 Meter ......................................................................................................................................................... 3-9 3.4.2 System: Card View.................................................................................................................................... 3-9 3.4.3 System: Power Supply............................................................................................................................. 3-10 3.4.4 System: Info............................................................................................................................................. 3-10 3.4.5 System: Basic Card Setup........................................................................................................................ 3-11 3.4.6 System: Factory Calibration .................................................................................................................... 3-12 3.4.7 System: Unit-Wide Parameters................................................................................................................ 3-13 3.4.8 System: Date/Time .................................................................................................................................. 3-14 3.4.9 System: Transfer...................................................................................................................................... 3-14 3.4.10 External I/O ............................................................................................................................................. 3-15 3.4.11 Alarms ..................................................................................................................................................... 3-16 3.4.12 Faults ....................................................................................................................................................... 3-17 3.4.13 G821 Parameters...................................................................................................................................... 3-17 3.4.14 QAM Modem Status................................................................................................................................ 3-18 3.4.15 QAM Radio TX Status ............................................................................................................................ 3-21 3.4.16 QAM Radio RX Status ............................................................................................................................ 3-22 3.4.17 QAM Radio TX Control.......................................................................................................................... 3-22 3.4.18 QAM Radio RX Control.......................................................................................................................... 3-23 3.4.19 QAM Modem Configure ......................................................................................................................... 3-24 3.4.20 QAM Radio TX Configure...................................................................................................................... 3-30 3.4.21 QAM Radio RX Configure...................................................................................................................... 3-31 3.5 NMS/CPU PC Configuration Software ....................................................................................................... 3-31 3.6 Up/Down Converter: Frequency Adjust...................................................................................................... 3-31 3.6.1 TX Frequency Adjust .............................................................................................................................. 3-31 3.6.2 AFC Level—RX...................................................................................................................................... 3-32 DATA INTERFACE CABLES ................................................................................................................4-1 APPENDIX .............................................................................................................................................5-1 5.1 Abbreviations & Acronyms ............................................................................................................................ 5-1 5.2 Conversion Chart ............................................................................................................................................ 5-3 DataNex EMS Wireless, DATA-20 Digital Radio 1 System Description 1.1 Introduction The DATA-20 is a spectrum-scalable point-to-point digital radio that can deliver 8Mbps of data. Advanced modulation and digital processing techniques allow one radio to deliver user-defined rates from 512 kbps to 8Mbps The product is an all-digital, open-architecture, modular system (see Figure 1-1 below). The versatility and power of the product comes from a complete range of “plug and play” personality modules. Figure 1-1. DATA-20 Modular Open Architecture The high spectral efficiency of the DATA-20 is achieved by user-selectable QPSK, or 16 QAM. Powerful Reed-Solomon error correction, coupled with a 20-tap adaptive equalizer, provides unsurpassed signal robustness in hostile RF environments. 1.2 System Features Selectable Rates: 512 kbps to 8.448 Mbps Selectable Spectral Efficiency of 1.6 or 3.2 bps/Hz QPSK & QAM Modulation Powerful Reed-Solomon Error Correction with up to 12 level interleaver Built-in Adaptive Equalizer Internal Duplexer or external for hot standby system Independent Synthesized Tx & Rx units System Description 1-2 Auto / Manual Power Control of up to 20 dB Built-in Auto Pin Diode Attenuator for powerful signals Accurate Digital Filtering for adjacent channel rejection 386 Processor-based controller Extensive LCD screen status monitoring Built-in BER Meter Built-in NMS Monitoring & Time Stamping Monitor up to 4 external Analog & Digital I/O Readout of RSL in dBm Completely modular 1.3 Typical Configurations 1.3.1 Data Rate and Interface Table 1-1 provides basic data channel capabilities for the DATA-20. See Section 2 (Installation) for more detailed information. Table 1-1.DATA-20 Data Channel Configurations Data Rate MUX Hardware Channels Interface(s) 1.5 Mbps-8 Mbps 2 or 4 x E1/T1 2 or 4 G.703, E1/T1 512 kbps-2 Mbps QAM Modem Fractional E1/T1 512 kbps-2 Mbps QAM Modem V35, RS449 1.3.2 Standalone Operation The DATA-20 may be used as a standalone digital radio with an interface in the modem or with a Multiplexer with 2 or 4 E1/T1 interfaces. The Multiplexer has an overhead channel which can be utilized by the customer DataNex EMS Wireless, DATA-20 Digital Radio 1-3 System Description 1.3.3 Hot Standby (Protected) Operation The product in a hot standby configuration as depicted in Fig.1-2, using two DATA-20 radios and a TP64 transfer panel. Data-20 RADIO A DATA TP64 TRANSFER PANEL DATA CNTL TX RX ANTENNA DATA SWITCH/ TRANSFER LOGIC RX RF SPLITTER DATA CNTL RX TX RF RELAY DUPLEXER TX Data-20 RADIO B Figure 1-2. DATA-20 Hot Standby – Two Discrete Radios with Transfer Panel 1.4 Regulatory Notices FCC Part 15 Notice 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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his expense. Any external data or audio connection to this equipment must use shielded cables. DataNex EMS Wireless, DATA-20 Digital Radio System Description 1-4 1.5 System Description (QAM) 1.5.1 Introduction The product is a full-duplex digital radio. The following sections describe the TX system, RX system, followed by sub-system components. Please reference the accompanying block diagrams for clarification. We will follow the typical end-to-end progression of a radio system starting with the TX baseband inputs, to the QAM modulator, followed by the upconversion process and the power amplifier. We then proceed to the RX preamplifier input, the downconversion process, followed by the QAM demodulator and baseband outputs. QAM Modem Module Antenna RF Module RX Down Converter Duplexer TX RF Linear PA 400 MHz1.5 GHz IF Card QAM Modem Down Converter Demodulator Up Converter Modulator 70 MHz Up Converter +15 VDC 12.8 MHz Back Pl PA Control/ Current Sense Data, Address, I 2C, SPI Bus System Monitor (A/D) Power Supply Intelligent MUX NMS Channel 1 System CPU Universal Input AC (DC Optional) +5/+15 VDC 130 Watt Remote I/O Front Panel Interface 4 Port Data/Voice Interface Channel 2 Channel 3 Channel 4 Serial PC Interface Status/Command/Control I/O Transfer Panel I/O Front Panel Trunk Front Panel Ribbon Cable 4 x 20 LCD Display Status LEDs BarGraph Figure 1-3. DATA-20 System Block Diagram All modules (excluding the Front Panel and Power Amplifier) are interconnected via the backplane that traverses the entire width of the unit. The backplane contains the various communication buses as well as the PA (Power Amplifier) control and redundant transfer circuitry. The power supply levels and status are monitored on the backplane and the NMS/CPU card processes the data. DataNex EMS Wireless, DATA-20 Digital Radio 1-5 System Description Figure 1-4. Location of theDATA-20Backplane and Power Amplifier The NMS/CPU card incorporates microprocessor and FPGA logic to configure and monitor the overall operation of the system via front panel controls, LCD screen menus, status LEDs and the bar graph display. Module settings are loaded into the installed cards and power-up default settings are stored in non-volatile memory. LCD screen menu software is uploaded into memory, providing field upgrade capability. A Windows-based PC interface is available for connection at the rear panel DATA port. 1.5.2 QAM Modulator/IF Upconverter DIGITAL POT NCO OCXO 12.8 MHz INTERLEAVE RAM BUS DATA & CLK IN IF OUT QAM ENCODER IF SYNTH IF STATUS BUS REF CLK OUT FPGA LED STATUS IF REF CLK OUT BUS I2C IN TRUNK I/O LEVEL TRANSLATOR TXD RS232 TRANSLATOR RXD MICRO CONTROLLER FPGA EEPROM SPI DEBUG uC EEPROM BUS DATA & CLK OUT IF IN AGC QAM DECODER LEGEND RATE CONVERTER NO CONNECTION INTERLEAVE RAM uC BUS PLL FIFO REF CLK Figure 1-5. QAM Modem Block Diagram The QAM (Quadrature Amplitude Modulation) Modulator is the transmit portion of the QAM Modem card. The QAM Modem also houses the IF Up/Down Converter. The QAM Modulator utilizes the upconverter portion of the IF daughter card. The QAM Modulator accepts the aggregate data stream via the backplane (see Figure 1-5 above). The module performs modulation at a carrier frequency of 6.4 MHz, adding FEC (Forward Error Correction) bits while interleaving the blocks of data. The result is a very spectrally efficient, yet robust linear modulation scheme. This process requires an ultra-stable DataNex EMS Wireless, DATA-20 Digital Radio System Description 1-6 master clock provided by an OCXO (oven controlled crystal oscillator) that is accurate to within 0.1 ppm. IF Input 6.4 MHz -20 dBm BPF BPF 6.4 MHz 70 MHz Synth Level 76.4 MHz PLL Loop Data Clk Filter VCO IF Output PLL Enbl Synth Ref 70 MHz Exciter Level -10 dBm Lock Figure 1-6. IF Upconverter Block Diagram The resultant carrier is translated up to 70 MHz by the IF Upconverter (see Figure 1-6). This is accomplished by a standard mixing of the carrier with a phase-locked LO. A 70 MHz SAW filter provides an exceptional, spectrally-clean output signal. 1.5.3 RF Upconverter RF Output 70 MHz IF Input BPF 70 MHz Diplexer BPF BPF Synth Level Data Clk Enbl Ref Loop Filter PLL PLL Synth Lock DataNex TX ALC VCO IPA Level Synth Level Synth Lock Synth Data Synth Clk Synth Enbl uP RFA Fwd Pwr Level RFA Rev Pwr Level Temp Sense NMS 12.8 MHz Ref Osc EMS Wireless, DATA-20 Digital Radio 1-7 System Description Figure 1-7. RF Upconverter Block Diagram The IF output carrier of the IF Upconverter daughter card is fed to the transmit portion of the RF Module via an external (rear panel) semi-rigid SMA cable. This module performs the necessary upconversion to the RF carrier (see Figure 1-7). There is an on-board CPU for independent control of the critical RF parameters of the system. Since this is a linear RF processing chain, an automatic leveling control loop (ALC) is implemented here to maintain maximum available power output (and therefore maximum system gain). The ALC monitors the PA forward power (FWD) output sample, and controls the upconverter gain per an algorithm programmed in the CPU. The ALC also controls the power-up RF conditions of the transmitter output. 1.5.4 Power Amplifier (PA) The Power Amplifier (PA) is a separate module that is mounted to a heat sink and is fan-cooled for reliable operation. The PA is a design for maximum linearity in an amplitude modulationbased system. 1.5.5 RF Downconverter ALC Loop Amp ALC Control ALC RF AGC Det RF Input IF Output BPF Diplexer BPF 70 MHz 70 MHz 70 MHz Atten Preamp to QAM Demod IF Amp NMS Synth Level 12.8 MHz Ref Osc Synth Lock Synth Data Loop Filter VCO Synth Clk Synth Enbl uP Data Clk PLL PLL Enbl Ref Synth Lock Figure 1-8. RF Downconverter Block Diagram The receiver handles the traditional RF to IF conversion from the carrier to 70 MHz (see Figure 18). Considerations are given to image rejection, intermodulation performance, dynamic range, agility, and survivability. A separate AGC loop was assigned to the RF front end to prevent intermodulation and saturation problems associated with reception of high level undesirable DataNex EMS Wireless, DATA-20 Digital Radio System Description 1-8 interfering RF signals resulting from RF bandwidth that is much wider than the IF bandwidth. The linear QAM scheme is fairly intolerant of amplifier overload. 1.5.6 QAM Demodulator/IF Downconverter IF Input 70 MHz BPF BPF 70 MHz 6.4 MHz IF Output Synth Level 6.4 MHz -10dBm 76.4 MHz PLL Loop Data Clk Filter AGC Control VCO PLL Enbl Ref Synth Lock Figure 1-9. IF Downconverter Block Diagram The QAM (Quadrature Amplitude Modulation) Demodulator is the receive portion of the QAM Modem card. The QAM Modem also houses the IF Up/Down Converter. The QAM Demod utilizes the downconverter portion of the IF daughter card. The IF Downconverter receives the 70 MHz carrier from the receiver portion of the RF Module via an external semi-rigid cable and directly converts the carrier to 6.4 MHz by mixing with a lownoise phase-locked LO (see Figure 1-9). System selectivity is achieved through the use of a 70 MHz SAW filter. The QAM Demod receives and demodulates the 6.4 MHz carrier (see Figure 1-7). The demodulation process includes the FEC implementation and de-interleaving that matches the QAM modulator in the transmitter, and the critical “data assisted recovery” of the clock. This process requires an ultra-stable master clock provided by an OCXO (oven controlled crystal oscillator). The output is an aggregate data stream that is distributed to the trunk port for if the data input/output is out of the Modem, or to the backplane for connection to the multiplexer connected on the backplane. DataNex EMS Wireless, DATA-20 Digital Radio 2 Installation 2.1 Unpacking The following is a list of all included items. Description Quantity Digital Radio (3RU chassis) Rack Ears (with hardware) Extender Card (Universal QAM) — optional Power Cord (IEC 3 conductor for AC, 2-wire for DC) Manual ( or Soft copy on a CD) Test Data Sheet (customer documentation) Be sure to retain the original boxes and packing material in case of return shipping. Inspect all items for damage and/or loose parts. Contact the shipping company immediately if anything appears damaged. If any of the listed parts are missing, call the distributor or the factory immediately to resolve the problem. 2.2 Notices CAUTION DO NOT OPERATE UNITS WITHOUT AN ANTENNA, ATTENUATOR, OR LOAD CONNECTED TO THE ANTENNA PORT. DAMAGE MAY OCCUR TO THE TRANSMITTER DUE TO EXCESSIVE REFLECTED RF ENERGY. ALWAYS ATTENUATE THE SIGNAL INTO THE RECEIVER ANTENNA PORT TO LESS THAN 3000 MICROVOLTS. THIS WILL PREVENT OVERLOAD AND POSSIBLE DAMAGE TO THE RECEIVER MODULE WARNING Installation 2-2 HIGH VOLTAGE IS PRESENT INSIDE THE POWER SUPPLY MODULE WHEN THE UNIT IS PLUGGED IN. REMOVAL OF THE POWER SUPPLY CAGE WILL EXPOSE THIS POTENTIAL TO SERVICE PERSONNEL. TO PREVENT ELECTRICAL SHOCK, UNPLUG THE POWER CABLE BEFORE SERVICING. UNIT SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY. PRE-INSTALLATION NOTES Always pre-test the system on the bench in its intended configuration prior to installation at a remote site. Avoid cable interconnection length in excess of 1 meter in strong RF environments. We highly recommend installation of lightning protectors to prevent line surges from damaging expensive components. 2.3 Rack Mount The product is normally rack-mounted in a standard 19” cabinet. Leave space clear above (or below) the unit for proper air ventilation of the card cage. The rack ears are typically mounted as shown in Figure 2-1. Other mounting methods are possible by changing the orientation of the rack ears. Figure 2-1.DATA-20 Typical Rack Mount Bracket Installation 2.4 Duplexer: Internal/External Various duplexers, both internal and external, can be utilized. For current duplexers utilized with the radios, please see the Appendix. DataNex EMS Wireless, DATA-20 Digital Radio 2-3 Installation 2.5 Rear Panel Connections & Indicators Please refer to the Figure 2-2 for a pictorial of a typical product rear panel (internal duplexer). Following is a descriptive text of the connections and LED indicators. Figure 2-2.DATA-20 Rear Panel Connections Power Supply: Inputs: Status LED: AC: Universal Input, 100-240V, 50/60 Hz; IEC 3 conductor DC: 24v/48v (Isolated Input); 2 pin socket (custom) +12V: Green LED indicates +12 volt supply OK +5V: Green LED indicates +5 volt supply OK NMS Card DataNex I/O Port: RS232 PC access; 9 pin D-sub (female) Reset Switch: Activates hard system reset Status LED: Green LED Indicates CPU OK EMS Wireless, DATA-20 Digital Radio Installation 2-4 QAM Modem I/O Ports: TRUNK: Data I/O 15pin D-sub (female) HD RF Connectors: 70 MHz OUT: SMA (female); Modulator output 70 MHz IN: SMA (female); Demod input MOD: GREEN indicates Modulator Lock DEMOD: GREEN indicates Demod Lock Status LED: Up/Down Converter Module RF Connectors: Status LED: TO PA: SMA (female), Upconverter output to be applied to linear Power Amplifier module (internal to radio). 70 MHz IN: SMA (female), Modulated IF input from QAM Modulator. RF IN: SMA (female), Receiver input. 70 MHz OUT: SMA (female); Downconverter output to Modulator input TX LOCK: GREEN indicates TX AFC LOCK Flashing RED indicates LOSS OF TX LOCK RX LOCK: GREEN indicates RX AFC LOCK and strong RX signal YELLOW indicates RX AFC LOCK and nominal RX signal RED (continuous) indicates RX AFC LOCK and weak RX signal RED (flashing) indicates LOSS OF RX LOCK DataNex EMS Wireless, DATA-20 Digital Radio 2-5 Installation RF I/O Panel RF Connectors: ANTENNA: Type N (female), RF cabling from internal PA module. PA IN: SMA (female), RF cabling to internal PA module. RX OUT: SMA (female), RF cabling from internal duplexer. SEMI-RIGID CABLE Ensure that the cables are secure and tightly attached. Check for any damage (kinks or breaks in the copper sheath). 2.6 Power Requirements 2.6.1 Power Supply Card Slot Details The leftmost slot in the DATA-20 card cage (as viewed from the rear of the unit) is designated as the “PRIMARY A” power supply. The main bus voltages (+5 and +/-12) are summed in the backplane and provide the supply the plug-in modules. NOTE: The front panel LCD screen displays the system supply voltages and the nomenclature follows the physical location of the power supply modules. 2.6.2 AC Line Voltage The DATA-20 uses a high reliability, universal input switching power supply capable of operating within an input range of: 100 - 240 VAC; 50/60 Hz The power supply module is removable from the unit and a perforated cage protects service personnel from high voltage. The power supply is fan cooled due to high power consumption by the PA. CAUTION High voltage is present when the unit is plugged in. To prevent electrical shock, unplug the power cable before servicing. Power supply module should be serviced by qualified personnel only. DataNex EMS Wireless, DATA-20 Digital Radio Installation 2-6 2.6.3 DC Input Option An optional DC input power supply is available for the DATA-20; using high reliability, DC-DC converter(s) capable of operation within the following input ranges (dependent upon nominal input rating): Nominal DC Input Operating Input Range 24 Volt: 20 – 28 VDC 48 Volt: 32 – 64 VDC The DC input is isolated from chassis ground and can be operated in a positive or negative ground configuration. The power supply module is removable from the unit and no high voltages are accessible. 2.6.4 Fusing For AC modules, the main input fuse is located on the switching power supply mounted to the carrier PC board and the protective cage may be removed for access to the fuse. For DC modules, all fusing is located on the carrier PC board. Always replace any fuse with same type and rating. Other fuses are present on the board, and are designed for output fail-safe protection of the system. All output fuse values are printed on the backside of the PC board to aid in replacement. NOTE: If a fuse does blow in operation, investigate the possible cause of the failure prior to replacing the fuse, as there is adequate built-in protection margin. 2.7 Power-Up Setting As shipped, the DATA-20 will radiate into the antenna upon power-up, THIS ASSUMES THAT THE ANTENNA LOAD IS GOOD (LOW VSWR). If the VSWR of the load causes a high reverse power indication at the PA, the red VSWR LED will light and the transmitter will cease radiating. This is called the “AUTO” setting in the QAM RADIO CONTROL screen (see below). The LCD screen (“QAM RADIO TX CONTROL”) selects the power-up state and controls the radiate function of the TX unit. Go to the MAIN MENU: DataNex EMS Wireless, DATA-20 Digital Radio 2-7 Installation Data-20 Main Menu Scroll METER QAM RADIO SYSTEM ALARMS/FAULTS Scroll to QAM Radio, press ENTER. Select Launch Screen for CONTROL TX, press ENTER: QAM Radio Launch CONTROL TXA QAM Radio TX Control TX Radiate AUTO Verify the AUTO setting. DataNex AUTO: Transmitter will protect its PA by “folding back” the ALC under bad load VSWR condition (default setting) ON: Transmitter will remain in radiate at full power under all antenna port conditions (not recommended). OFF: Transmitter in standby mode. EMS Wireless, DATA-20 Digital Radio Installation 2-8 2.8 Data Interface 2.8.1 4xE1/T1 MUX Channel Configurations Trunk I/O Async Data Channel Channel 1/2 (E1/T1) Channel 3/4 (E1/T1) Aux Channel 1 Aux Channel 2 EMS Figure 2-3. 4XE1/T1 MUX Panel The 4xE1/T1 MUX is a high speed card (up to 8 MBPS) that has a total of 7 ports. Table 2-1 summarizes the capabilities. DataNex EMS Wireless, DATA-20 Digital Radio 2-9 Installation Table 2-1.DATA-20 4xE1/T1 MUX Data Channel Configurations Chnl Data Rate 4xE1 (BPS) Data Rate 4xT1 (BPS) Data Rate 2xE1 (BPS) Data Rate 2xT1 (BPS) Data Rate 1xE1 (BPS) Data Rate 1xT1 (BPS) Interface 2.048 K 1.544 K 2.048 K 1.544 K 2.048 K 1.544 K G.703, DSX-1 2.048 K 1.544 K 2.048 K 1.544 K --- --- G.703, DSX-1 2.048 K 1.544 K --- --- --- --- G.703, DSX-1 2.048 K 1.544 K --- --- --- --- G.703, DSX-1 * Aux1 128 K 96 K 64 K 48 K 32 K 24 K V.35, RS449 * Aux2 128 K 96 K 64 K 48 K 32 K 24 K V.35, RS449 ASYNC Data 9600 7200 4800 3600 2400 1800 RS232 * AUX Channels 1-2 can be combined to form 2xCh.1 or 2xCh.2 (i.e., in 4xE1 mode, AUX could be a single channel of 256 KBPS) 2.9 Hot Standby (Protected) Configuration The DATA-20 may be installed in a hot standby (protected) configuration. This consists of twoDATA-20 chassis with a TP64 transfer panel (Figure 2-5) Transfer Panel Connection The usual hot standby configuration uses an external duplexer. This minimizes RF losses and provides independent TX and RX module switching. A duplexer should already be mounted on the TP64 chassis. Alternatively, rack mounted duplexers (typical for tighter channel spacings) may be provided. The connections are the same, although the physical location is different. A power divider (used to split the signal equally to two receivers) is required in this mode. The input to the power divider connects directly to the duplexer with an N-N (male) adapter. See Figure 2-4 for installation details. DataNex EMS Wireless, DATA-20 Digital Radio Installation 2-10 ANTENNA DATA-20 Radio A DATA TP64 Top View RJ45 DATA TP64 Rear Panel RJ45 Data-20 Radio B DATA Figure 2-4.DATA-20 Hot Standby – with Transfer Panel 2.9.1 Hot/Cold Standby Modes Hot Standby ( *preferred) Hot standby leaves both transmitters in the RADIATE ON condition, and the transfer logic controls the RF relay to select the active transmitter, thereby decreasing switchover time. This is the preferred operating mode. Cold Standby Cold standby can be used in situations where lower power consumption is a priority. In this mode, the transfer logic will control the RADIATE function of each transmitter, turning the RF DataNex EMS Wireless, DATA-20 Digital Radio 2-11 Installation output ON (in tandem with the RF relay) as required for switching. This will increase switching time and a corresponding increase in data loss during the switchover. 2.9.2 Hot Standby Control using the TP64 2.9.2.1 TP64 Front Panel Controls and Indicators Note: See the following section for a detailed description of the Master/Slave logic implemented in the TP64. DataNex Figure 2-5. TP64 Front Panel LED Indicators Green: The indicated module is active, and that the module is performing within its specified limits. Yellow: The indicated module is in standby mode, ready and able for back-up transfer. Red: There is a fault with the corresponding module. It is not ready for backup, and the TP64 will not transfer to that module. TRANSFER Switches The RADIO A and RADIO B transfer switches cause the selected radio to become active, and the Master. See Section 3.4 (following) for further details. 2.9.2.2 Master/Slave Operation & LED Status The TP64 operates in a Master/Slave logic mode. In the power up condition, the Master is RADIO A. This means that RADIO A is the default active unit. The following logic applies to hot or cold standby, external or internal duplexer configurations. DataNex EMS Wireless, DATA-20 Digital Radio Installation 2-12 Table 2-3. TP64 Transmitter Master/Slave Logic B-Master Logic A-Master Logic Selected Master TXA Status OK OK FAIL FAIL OK OK FAIL FAIL TXB Status OK FAIL OK FAIL OK FAIL OK FAIL TXA LED GRN GRN RED RED YEL GRN RED RED TXB LED YEL RED GRN RED GRN RED GRN RED Active TX N/A N/A TX Relay Position Table 2-4. TP64 Receiver Master/Slave Logic B-Master Logic A-Master Logic Selected Master RXA Status OK OK FAIL FAIL OK OK FAIL FAIL RXB Status OK FAIL OK FAIL OK FAIL OK FAIL RXA LED GRN GRN RED RED YEL GRN RED RED RXB LED YEL RED GRN RED GRN RED GRN RED Active RX N/A N/A RX Data & Clk None None A-Master Logic (default power-up): If RADIO A is “good”, the TP64 will remain in RADIO A position, regardless of RADIO B’s status. If RADIO A fails, the TP64 will switch to RADIO B (assuming that RADIO B is “good”) If RADIO A then returns to a “good” condition, the TP64 will switch back to RADIO A (the default Master) Manual Switchover to B-Master Logic The front panel switch on the TP64 can be used to manually force the system to a new Master. By pressing the RADIO B button, RADIO B now becomes the Master, and the TP64 will switchover to RADIO B (assuming that RADIO B is “good”). The default A-Master Logic will then switch to B-Master Logic, as outlined in Tables 2-3 and 2-4. DataNex EMS Wireless, DATA-20 Digital Radio 2-13 Installation Note: Manual switching of the Master is often used to force the system over to the standby unit. The user may want to put more “time” on the standby unit after an extended period of service. In Hot Standby configurations, this will not buy the user anything in terms of reliability. In Cold Standby, the “burn time“ is more significant, since the RF power amplifier device operating life becomes a factor. 2.9.2.3 DATA-20 Software Settings The full array of available settings for the Control and Configuration menus are located in Section 3—Operation of the Front Panel. Shown here are the applicable settings for redundant standby systems. Clock Settings For proper operation, the clock settings (located in the QAM Radio/Config/Modem Menu) must be set as follows: QAM Interface TRUNK Intfc Tx In Clock Clk Phase INVERTED Rx Clock Out Clk Phase NORMAL Trunk Out Clk Source EXTERNAL Clk Phase NORMAL Control Settings These settings configure the transmitter for hot (or cold) standby. It is important that each DATA-20 radio in the redundant pair is configured identically for proper operation. In the SYSTEM TRANSFER menu: Transfer Tx Transfer ______ Rx Transfer ______ DataNex EMS Wireless, DATA-20 Digital Radio Installation 2-14 Tx Transfer: OFF: Turns Transmitter Transfer Mode OFF. Rx Transfer: OFF: Indicates the receivers are not switched. In the QAM Radio TX Control menu: QAM Radio Tx Control TX Radiate ______ Tx Radiate: ON: 2.9.2.4 Configures the Transmitter to always RADIATE. TP64 Settings The TP64 software settings are contained in the internal firmware. Aside from the front panel RADIO A/B Master Select (as described above), there are no user-configurable settings in the TP64 unit. 2.9.3 Hot Standby Control with Single Unit 2.9.3.1 DATA-20 Software Settings The full array of available settings for the Control and Configuration menus are located in Section 3—Operations. Shown here are the applicable settings for single systems. Clock Settings All controls and indications can be found on the DATA-20 front panel LCD display (located in the QAM Radio/Config/ModA or ModB Menu). QAM Interface Intfc RADIO(BKPLN) Tx In Clock Clk Phase NORMAL Control Settings These settings configure the transmitter for hot (or cold) standby. DataNex EMS Wireless, DATA-20 Digital Radio 2-15 Installation It is important that each DATA-20 radio in the redundant pair is configured identically for proper operation. In the SYSTEM TRANSFER menu: Transfer Tx Transfer ______ Rx Transfer ______ Tx Transfer: HOT: Configures the Transmitter for HOT STANDBY operation.*(preferred) COLD: Configures the Transmitter for COLD STANDBY operation. Rx Transfer: ON: Places the receivers in both active and transfer mode. In the QAM Radio TX Control menu: QAM Radio Tx Control TX Radiate ______ Tx Radiate: AUTO: 2.10 Software controls the RADIATE function. Site Installation The installation of the DATA-20 involves several considerations. A proper installation is usually preceded by a pre-installation site survey of the facilities. The purpose of this survey is to familiarize the customer with the basic requirements needed for the installation to go smoothly. The following are some considerations to be addressed (refer to Figure 2-8 for Site Installation Details). Before taking the product to the installation site verify that the interface connections are compatible with the equipment to be connected. Also, locate the information provided by the path analysis that should have been performed before ordering the equipment. At the installation site, particular care should be taken in locating the product in an area where it is protected from the weather and as close to the antenna as possible. Locate the power source and verify that it is suitable for proper installation. The installations should only be performed by qualified technical personnel only. DataNex EMS Wireless, DATA-20 Digital Radio Installation 2-16 2.11 Antenna/Feed System 2.11.1 Antenna Installation For compliance with FCC RF Exposure requirements the following has to be adhered to:- 1. All antenna installation and servicing is to be performed by qualified technical personnel only. When servicing the antenna, or working at distances closer than those noted below, ensure the transmitter has be disabled. 2. Typically, the antenna connected to the transmitter is a directional (high gain) antenna, fixed-mounted on the side or top of a building, or on a tower. Depending upon the application and the gain of the antenna, the total composite power could exceed 20 to 61watts EIRP. The antenna location should be such that only qualified technical personnel can access it, and that under normal operating conditions the antenna separation from the user is required to be located at the distance of 3.5meters or more. EIRP at the antenna is calculated as follows:Transmit power – Cable loss + Antenna Gain = EIRP Eg. +31.1dBm – 6dB(for 100m LDF5-50A) +36dBi = DataNex 61.1Bmi EMS Wireless, DATA-20 Digital Radio 3 Front Panel Operation 3.1 Introduction This section describes the front panel operation of the DATA-20 digital radio/modem. This includes: • LCD display (including all screen menus) • Cursor and screen control buttons • LED status indicators 3.2 Front Panel Operation A picture of the DATA-20 front panel is depicted in Figure 3-1 below. Front Panel Operation 3-2 Figure 3-1.DATA-20 Front Panel 3.2.1 LCD Display The Liquid Crystal Display (LCD) on the DATA-20 front panel is the primary user interface and provides status, control, configuration, and calibration functionality. The menu navigation and various screens are explained in detail later in this section. Backlight: An automatic backlight is built-in to the LCD for better clarity under low-light conditions. This backlight is enabled on power-up and will automatically turn off if there is no button activity by the user. The backlight will automatically turn on as soon as any button is pressed. Contrast Adjustment: Internal adjustment on board (in back of front panel button PCB). 3.2.2 Cursor and Screen Control Buttons The buttons on theDATA-20 front panel are used for LCD screen interface and control functions: ENT ESC DataNexUsed to accept an entry (such as a value, a condition, or a menu choice). Used to “back up” a level in the menu structure without saving any current changes. , Used in most cases to move between the menu items. If there is another menu in the sequence when the bottom of a menu is reached, the display will automatically scroll to that menu. , Used to select between conditions (such as ON/OFF, ENABLED/DISABLED, LOW/HIGH, etc.) as well as to increase or decrease numerical values. EMS Wireless, DATA-20 Digital Radio 3-3 Front Panel Operation 3.2.3 LED Status Indicators Table 3-1. LED Status Indicator Functions LED Name Function Receiver Green indicates that the receiver is enabled, the synthesizer is phase-locked, and a signal is being received. RXD Receive Data Green indicates that valid data is being received. BER Bit Error Rate Flashes red for each data error detected. FLT Fault General fault light (red). Consult the STATUS menus for out of tolerance conditions. LBK Loopback Red indicates analog or digital loopback is enabled. Transmit Data Green indicates the modem clock is phaselocked and data is being sent. Transmitter Green indicates the transmitter is radiating, and the RF output (forward power) is above the factory-set threshold. RX TXD TX 3.2.4 Screen Menu Tree Structure Figures 3-2a, b and c, located on pages 3-7, 3-8, 3-9 and 3-10, show the tree structure of the screen menu system. The figures group the screens into functional sets. There may be minor differences in the purchased unit, due to software enhancements and revisions. The current software revision may be noted in the SYSTEM sub-menu (under INFO). In general, will take you to the next screen from a menu choice, or will scroll through screens within a menu choice, and will take you back up one menu level. Certain configuration screens have exceptions to this rule, and are noted later in this section. CAUTION DO NOT change any settings in the CONFIGURE or CALIBRATE screens. The security lock-out features of the software may not be fully implemented, and changing a setting will most likely render the system non-operational! DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-4 3.3 Main Menu MAIN MENU METER QAM RADIO SYSTEM ALARMS/FAULTS Scroll Data-20 The main menu appears on system boot-up, and is the starting point for all screen navigation. Unlike most other screens in the software, the main menu scrolls up or down, one line item at a time. DataNex EMS Wireless, DATA-20 Digital Radio 3-5 Front Panel Operation 3.3.1 Launch Screens The LAUNCH screen allows the user to quickly get to a particular screen within a functional grouping in the unit. The logic is slightly different than other screens. Figure 3-2 below contains a “Launch Screen Navigation Guide” to assist the user in locating the desired Radio screen. Data-20 MAIN MENU ENT Scroll METER QAM RADIO SYSTEM ALARMS/FAULTS Cycle through STATUS, CONTROL, CONFIGURE choices: QAM Radio Launch QAM Radio Launch STATUS MODEM QAM Radio Launch CONTROL MODEM CONFIGURE MODEM Move cursor to next line Cycle through MODEM, TX, RX choices: QAM Radio Launch QAM Radio Launch QAM Radio Launch STATUS TX STATUS RX STATUS MODEM ENT TX STATUS chosen, press ENTER to view. QAM Radio TX Status FreqA MHz Page down/up with down or up arrow. More Screens (see Menu Flow Diagram) ESC Press ESCAPE to return to previous levels. Figure 3-2. Launch Screen Navigation Guide DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-6 This page is intentionally blank. DataNex EMS Wireless, DATA-20 Digital Radio 3-7 Front Panel Operation Data-20 MAIN MENU METER Sc roll QAM RADIO SYSTEM ALARMS/FAULT ALARMS FAULTS ALARMS FAULTS ALARMS/FAULTS SYSTEM System CARD VIEW Scr POWER SUPPLY oll INFO BASIC CARD SETUP FACTORY CAL UNIT-WIDE PARAMS DATE/TIME TRANSFER EXTERNAL I/O METER Meter Bargraph DECDR 1 Backlight AUTO Led DSP Cards QAMOD RF TX RF RX Active B.Addr Basic Card Setup CARD ID QAM Modem QMA RF Tx TXA Cards Active B.Addr MUX 0 CH CD 1 ENCDR 1 CARD ID RXA RF RX AUDIO ENC ENC1 AUDIO AUDIO DEC DEC DEC1 Cards Active B.Addr DECDR 1 CARD ID MUX Chnl Cd Power Supply Primary AC 5.00 V +5VD 15.00 V +15VD System Information SECURITY FIRMWARE **Note: USER Vx.xx "A" module and "Primary" screens are the default. "B" module and "Secondary" calibrations are available only when redundant systems are configured. DataNex MUX0 CHC1 Factory Calibrate RADIO TX System RADIO RX QAM Modem (see Factory Calibration submenu) Alarm(s) Fault(s) Total Alarms Since Reset-1 Total Faults Since Reset-1 Alarm(s) Fault(s) Rev Pwr > 0.25 W 15:20:24 6/29/00 Fwd Pwr < 0.5 W 15:18:43 6/29/00 Parameter Value Unit No. Main Title NXE1 Redundant ON System Date Day 29 06 Month Year 00 Ext A/D Readings #1- 0.56 #2- 0.00 #3- 0.00 #4- 0.00 IP MSB IP IP IP LSB System Time Hour 15 Minutes 35 Seconds 48 Ext A/D Readings 207 71 217 191 SNMP MSB SNMP SNMP SNMP LSB 255 255 255 GW MSB GW GW GW LSB 207 71 217 191 #1 OFF Transfer Tx Transfer Rx Transfer #2 OFF #3 OFF #4 OFF Ext Relays OFF OFF RELAY CONTROLS MAP FAULTS-RELAYS Control Relays #1- OFF #2- ON #3- OFF #4- ON Faults Map to Relays? ON Ext D/A Output RX SIG LVL CALC BER ALWAYS RMT/LOC LOC Meter, System, Al /F l Figure 3-2a Figure 3-2a LCD SCREEN MENU LCD SCREEN MENU TREE TREE EMS Wireless, DATA-20 Digital Radio 3-8 Front Panel Operation Data-20 MAIN MENU Scr oll METER QAM RADIO SYSTEM CAL 15V-RFA +5VD BATT +15VA Factory Calibration SYSTEM System ALARMS/FAULTS CARD VIEW POWER SUPPLY INFO BASIC CARD SETUP FACTORY CAL DATE/TIME TRANSFER EXTERNAL I/O Scr oll Factory Calibrate RADIO TX SYSTEM RADIO RX QAM MODEM System Cal EXTERNAL ANALOG #1 #2 #3 #4 15V-RFA-Prim. Calib Extern A/D 1 Calib Reading Calibr Val Reading Calibr Val 15.00 14.50 Battery-Prim. Calib Extern A/D 2 Calib Reading Calibr Val Reading Calibr Val 15.00 14.50 +5VD Calib Reading Calibr Val RADIO TX-A CAL FWD PWR ALC PA CUR REV PWR RADIO TX-B CAL FWD PWR ALC PA CUR REV PWR RADIO TX-A CAL AFC LVL LO LVL XCTR LVL RADIO TX-B CAL AFC LVL LO LVL XCTR LVL FWD PWR-A Calibr Pwr Adjust 190 27 Reading 1.00 Cal Value -9999.00 AFC LVL-A Calibr Reading 4.50 Calibr Val 0.85 FWD PWR-B Calibr Pwr Adjust 190 27 Reading 1.00 Cal Value -9999.00 AFC LVL-B Calibr Reading 4.50 Calibr Val 0.85 REV PWR-A Calibr Reading 0.25 W Cal Value -9999.00 LO LVL-A Calibr Reading 100 % Cal Value 52.94 % REV PWR-B Calibr Reading 0.25 W Cal Value -9999.00 ALC-A PA ALC Calibr AUTO PA Current-A Calib Reading 10.00 A 2.40 0.00 Cal Value 1.72 A XCTR LVL-A Calibr Reading 100 % Cal Value 100 % ALC-B PA ALC Calibr OCXO SYNTH LVL RADIO RX CAL UNIT A UNIT B UNIT A UNIT B MOD LVL AFC LVL QAM MODEM-B CAL OCXO SYNTH LVL MOD LVL AFC LVL RADIO RX-A CAL RSL AFC LVL LO LVL OCXO-B Cal Freq Adj 194 Mode SLAVE cw OFF LO LVL-B Calibr Reading 100 % Cal Value 52.94 % Synth Lvl-A Cal Reading 100.0 Cal Value 96.00 Synth Lvl-B Cal Reading 100.0 Cal Value 96.00 Reading Calibr Val XCTR LVL-B Calibr Reading 100 % Cal Value 100 % Mod Lvl-A Cal Reading 100.00 Cal Value 95.96 Mod Lvl-B Cal Reading 100.00 Cal Value 95.96 Reading Calibr Val AFC Lvl-A CAL Reading 4.50 Cal Value 3.67 AFC Lvl-B CAL Reading 4.50 Cal Value 3.67 AUTO PA Current-B Calib Reading 10.00 A 2.40 0.00 Cal Value 1.72 A Reading Calibr Val QAM MODEM CAL QAM MODEM-A CAL 15.00 12.00 Extern A/D 4 Calib 15.00 14.50 OCXO-A Cal Freq Adj 194 Mode SLAVE cw OFF Note: "B" Module and "Secondary" calibrations are available only when redundant systems are configured. "A" module and "Primary" screens are the default. DataNex Reading Calibr Val +15VA Calib UNIT A UNIT B 15.00 12.00 Extern A/D 3 Calib Reading 15.00 Calibr Val-9999.00 RADIO TX CAL 15.00 12.00 RSL-A CAL Hi Reading -50.00 Lo Reading -70.00 Calibr Val 0.00 AFC LVL-A CAL 4.50 4.05 LO LVL-A CAL 100 4.05 15.00 12.00 RADIO RX-B CAL RSL AFC LVL LO LVL RSL-B CAL Hi Reading Lo Reading Calibr Val -50.00 -70.00 0.00 AFC LVL-B CAL Reading Calibr Val 4.50 4.05 LO LVL-B CAL 100 Reading Calibr Val 4.05 Figure 3-2d Figure 4-2c Figure 4-2c TREE LCD SCREEN MENU SL9003Q SCREEN MENU TREE SL9003Q SCREEN MENU TREE EMS Wireless, DATA-20 Digital Radio 3-9 Front Panel Operation 3.4 Screen Menu Summaries The following tables and text provide a screen view for that topic as well as the functions and settings of that screen. The order follows the Screen Menu Tree (Figures 3-2a and 4-2d) with the exception of the QAM Radio screens, which are grouped in the STATUS, CONTROL and CONFIGURE categories. 3.4.1 Meter Meter Bargraph Led Dsp Function Bargraph Led Dsp 3.4.2 System: Settings ENCDR1, 2, etc… DECDR1, 2, etc… NONE DECDR 1 Summary Selects the desired audio source for display on the audio level bargraph Turns off the bargraph The status of Radio A or Radio B is displayed on the LEDs on the front panel. Card View Cards Active B.Addr QAMOD A RF TX A RF RX A Cards Active B.Addr MUX 0 CH CD 1 ENCDR 1 Cards Active B.Addr DECDR 1 DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation Function Cards Active 3-10 Settings RF RX A Summary QAM Receiver RF Module installed in QAM Radio “A” slots (base address 0) Audio Decoder #1 installed (base address 1) Audio Encoder #1 installed (base address 2) QAM Modem Module installed in QAM Radio “A” slots (base address 3) QAM Transmitter RF Module installed in QAM “A” slots (base address 4) Intelligent Multiplexer #0 installed (base address 5) DECDR 1 ENCDR 1 QAMOD A RF TX A MUX 0 CH CD 1 Note: The card view screen gives the user a list of all installed cards in the unit. The base address (B. Addr) is listed for diagnostic purposes only. 3.4.3 System: Power Supply Power Supply Status Primary AC 5.00 V +5VD 15.00 V +15VD Function Primary +5 VD +15 VD Settings AC DC 0-9.99 V 5.20 V nominal 0-99.9 V 15.2 V nominal Summary Indicates type of supply in primary slot A: Universal AC input DC Option Voltage level of the main +5 volt supply Voltage level of the main +15 volt supply 3.4.4 System: Info System Information Unit No. Security USER Firmware V.2.04 Function Unit No. SECURITY FIRMWARE DataNex Settings 1,2,3,… Lockout User (default) Factory V x.xx Summary Identification for NMS system Indicates access level of security: No control available Limited control of parameters Full configure and calibration Revision of front panel screen menu software EMS Wireless, DATA-20 Digital Radio 3-11 3.4.5 System: Front Panel Operation Basic Card Setup Basic Card Card QAM Modem RF Tx Function QAM Modem RF Tx RF Rx Audio Enc Setup Id QMA TXA Card RF Rx Audio Enc Audio Dec Id RXA ENC1 DEC1 Card MUX Chnl Cd Id MUX0 CHC1 Summary QAM Modem installed in QAM Radio slots A or B QAM Transmitter installed in QAM Radio slots A or B QAM Receiver installed in QAM Radio slots A or B Audio Encoder installed and identified (affects meter selection of bargraph) Audio Dec DEC1,2,… Audio Decoder installed and identified (affects meter selection of bargraph) MUX MUX 0,1,… Mux Module installed and identified Chnl Cd CHC 1,2,… Channel Card installed and identified Note: These are factory settings of installed cards, used to control appropriate displays in the CARD VIEW screens. Note: Pressing enter at each ID type brings up another screen with the Card Function shown and the question: In System? Is displayed. Depending upon the card type, this screen also indicates the base address. These windows are shown below: DataNex Settings QMA, QMB TXA, TXB RXA, RXB ENC1,2,… EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-12 QAM Modem A In system? YES Radio TX A In system? YES Radio RX A In system? YES Encoder In system? Base addr Decoder In system? Base addr 3.4.6 System: YES Mux 0 In system? YES Chnl Base Addr 0 Hooked to Radio NO Mux Channel 1 NONE 2 NONE Types 3 NONE 4 NONE Channel Card In system? Base addr YES Channel Card 1 Channel Types 1 NONE 3 NONE 2 NONE 4 NONE YES Factory Calibration Factory Calibrate RADIO TX System RADIO RX QAM Modem The Factory Calibration Screens are documented in Figure 3-2 (Screen Menu Tree). The user may refer to this diagram when instructed to do so by customer service technicians. DataNex EMS Wireless, DATA-20 Digital Radio 3-13 3.4.7 System: Front Panel Operation Unit-Wide Parameters Parameter Unit No. Main Title Redundant Value NXE1 ON IP MSB IP IP IP LSB 207 71 237 115 SNM MSB SNM SNM SNM LSB 255 255 255 GW MSB GW GW GW LSB 207 71 237 254 Calc BER always RMT/LOC Function Unit No. Main Title IP Settings 1,2,3,… TRANSMITTER, RECEIVER, TRANSCEIVER T1 DTV Link NXE1 ON OFF Integer (0-255) SNM Integer GW Integer Calc BER always RMT LOC Redundant DataNex LOC Summary Identification for NMS system Determines main menu display and affects screen menu selection of modules Hot Standby Dual Radio operation. Single Radio operation. Internet Protocol (IP) address of the device. These values must be set for the device to possess network capabilities. Subnet Mask of the device. Only needs to be set if the device is to use its network capabilities. Subnetting allows network administrators additional flexibility in defining relationships among network hosts. The default Gateway of the device. The Gateway address is configured by the network administrator. This address informs each device where to send data if the target station does not reside on the same subnet as the source. (Remote) Use RMT only in SNMP mode. (Local) Put in local. EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3.4.8 System: Function Day Month Year Hour Minute Second 3.4.9 System: 3-14 Date/Time Settings 01-31 01-12 00-99 00-23 00-59 00-59 System Day Month Year Date 29 06 98 System Hour Minute Second Time 15 35 48 Summary Sets the system date used for NMS and Fault/Alarm logging After selection, press ENTER to save Sets the system time used for NMS and Fault/Alarm logging After selection, press ENTER to save Transfer Transfer Tx Transfer Rx Transfer Function TX Transfer RX Transfer DataNex Settings OFF HOT COLD OFF ON OFF OFF Summary Configures the internal logic for transfer panel (TP64) TX control Configures the internal logic for transfer panel (TP64) RX control EMS Wireless, DATA-20 Digital Radio 3-15 Front Panel Operation 3.4.10 External I/O Ext A/D Readings #1- 0.56 #3- 0.00 #2- 0.00 #4- 0.00 Ext Status Readings #1 OFF #2 OFF #3 OFF #4 OFF Ext Relays RELAY CONTROLS MAP FAULTS-RELAYS Ext D/A Output Function Ext A/D Readings Ext Status Readings Ext Relays Map FaultsRelays Ext D/A Output DataNex Control Relays #1- OFF #3- OFF #2- ON #4- ON Faults Map to Relays? ON RX SIG LVL Settings #1, #2, #3, #4 Summary Voltage readings via the NMS I/O card #1, #2, #3, #4 Logic Level readings via the NMS I/O card #1, #2, #3, #4 ON OFF RX SIG LVL NOTHING TX FWD PWR Control of relays at the NMS I/O card Maps pre-determined fault conditions to trigger relays at the NMS I/O card External output follows Receive Signal Level. External output follows nothing. External output follows Transmit Forward Power. EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-16 3.4.11 Alarms Alarm(s) Total Alarms Since Reset-1 Alarm(s) Rev Pwr > 0.25 W 15:20:24 6/29/98 Module QAM RF TX QAM RF RX QAM MODEM Modulator only Parameter Reverse Power PA Current LO Level Exciter Level RSL LO Level BER Synth Level Modem Level Nominal 0.05 Watt 2.5 Amp 100% 100% -30 to –90 dBm 100% 100% 100% Trip Value > 0.25 Watt > 3.0 Amp < 50% < 50% < 50% >1.00E-04 < 50% < 50% Alarm definition: A specific parameter is out of tolerance, but is NOT crucial for proper system operation. ALARMS are cautionary only, and indicates a degradation in a system parameter. Logging: All fault and alarm events are logged with the date and time. Alarm screen reset: After viewing the screen, press ENTER to clear all logs entries. If the alarm has been corrected, no new logs will be generated. DataNex EMS Wireless, DATA-20 Digital Radio 3-17 Front Panel Operation 3.4.12 Faults Fault(s) Total Faults Since Reset-1 Fault(s) Fwd Pwr < 0.5 W 15:18:43 6/29/98 Module QAM RF TX Parameter Nominal Trip Value Forward Power 1.0 Watt < 0.5 Watt AFC Lock Lock Unlock PA Temp 40 deg C >80 deg C AFC Lock Lock Unlock QAM RF RX AFC Lock Lock Unlock QAM MODEM Mbaud Lock Unlock Dbaud Lock Unlock Dfec Lock Unlock Fault definition: A specific parameter is out of tolerance and is crucial for proper system operation. Logging: All fault and alarm events are logged with the date and time. Fault screen reset: After viewing the screen, press ENTER to clear all logs entries. If the fault has been corrected, no new logs will be generated. 3.4.13 G821 Parameters SLOSS QAM Modem0.000E ES 0.000E SES 0.000E UNAS 0.000E Function SLOSS Settings 0.000E +00 ES SES UNAS 0.000E +00 0.000E +00 0.000E +00 DataNex +00 +00 +00 +00 Summary Number of times the signal has been lost for more than 10 seconds Errored seconds Severely errored seconds Unavailable seconds EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-18 3.4.14 QAM Modem Status -80 dBm QAM QAM Modem Modem BER Post 0.00E+00 #Bits 0.0000E+00 #Errors 0.0000E+00 -80 dBm QAM Modem BER Pre 0.00E+00 #Bits 0.0000E+00 #Errors 0.0000E+00 Function BER Post Settings 0.00E-00 BER Pre 0.00E-00 # Bits # Errors 0.0000E+00 0.0000E+00 DataNex Note: Received Signal Level Summary Post-FEC (Forward Error Correction) Bit Error Rate since last “ENTER” reset Pre-FEC (Forward Error Correction) Bit Error Rate since last “ENTER” reset # of Bits counted since last “ENTER” reset # of Errors counted since last “ENTER” reset EMS Wireless, DATA-20 Digital Radio 3-19 Front Panel Operation QAM Modem Status (continued) Qmdm MOD Baud IFMOD Qmdm LOCK IFOUT Mode 95 64Q LOCK LOCK Qmdm MOD Baud DRT Enc 280.5 k 1535 k DVB LOCK 3.7 Qmdm MOD Spctr Fltr Intrl NRML 18 Qmdm DEMOD Baud Fec Qmdm Synth AFC Function BAUD IFMOD BAUD FEC SYNTH AFC IFOUT Mode BAUD DRT ENC SPCTR FLTR INTRL Settings LOCK (default) UNLOCK 0 – 100% 100% NOM LOCK (default) UNLOCK LOCK (default) UNLOCK LOCK (default) UNLOCK 0 – 9.9 VDC 3.7 VDC (nominal) 0 – 100% 100% (nominal) 16-64Q 280.5 K 1535 K DVB NRML 18 % Summary Indicates modulator PLL is locked to incoming data clock Indicates demodulator PLL is locked to incoming data clock Indicates FEC decoder is synchronized Confirms 70 MHz IF synthesizer is phase locked 70 MHz IF synthesizer AFC voltage Modulator level Modulation mode:16QAM, 32QAM, 64QAM Symbol rate Data rate Encoding mode Spectrum Normal or Invert Nyquist filter Interleave Depth Continued on next page. DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-20 QAM Modem Status (continued) Qmdm DEMOD 280.5 k Baud DRT 1535 k DVB Enc Qmdm DEMOD Spctr NRML Fltr 18 Intrl TX CLOCK Clk Src Recov Clk Ph Norm TX CLK OUT Clk Ph Norm NORMAL RX OUT Data Src Norm Clk Src Recov Clk Ph Norm TRNK FVers XVers Qmdm Test Qmdm Intfc Intfc Function BAUD DRT0 ENC SPCTR FLTR INTRL TEST Interface Clk Src (Tx Clock) Clk Ph (Tx Clock) Clk Ph (Tx Clock Out) Data Src (Rx Out) Qmdm Settings 280.5 K 1535 K DVB NRML 18 % NORMAL Trunk Internal, EXT TXC, EXT RXC, Recovered Inverted, Normal 1.5 2.1 Summary Symbol rate Data rate Encoding mode Spectrum Normal or Invert Nyquist filter Interleave Depth Internal Test Pattern Generator Active Interface Clock source of the Transmitter. Clock Phase of the Transmitter. Inverted, Normal Clock Phase of the Transmitter Clock Out. Norm, RPT, Loop Data Source of the Receiver Out. Normal means the source is either BKPLN or TRNK; RPT sets the radio to Repeater; Loop sets the radio to loopback mode. Clock Source of the Receiver Out. Internal, EXT TXC, Clk Src (Rx EXT RXC, Recov Out) Norm, Inverted Clk Ph (Rx Clock Phase of the Receiver Out. Out) Fvers Xvers Internal is the internal clock of the NXE1; EXT TXC is the External Transmit Clock; EXT RXC is the External Receive Clock; Recovered is the recovered clock from the receiving RF. DataNex EMS Wireless, DATA-20 Digital Radio 3-21 Front Panel Operation 3.4.15 QAM Radio TX Status DTV Menus QAM Radio TX Status Freq xxxx.xxx TX Xmtr Fwd Rev FORC 1.00 W 0.00 W Tx PA Cur Temp Synth 2.50 A 45 LOCK Tx AFC LO Xctr Function Freq A XMTR FWD REV PA CUR TEMP SYNTH AFC LO XCTR DataNex MHz 3.8 100 100 Settings 2300.00MHz TRAFFIC FORCED (default) 0 – 9.99 Watt 1.00 Watt (nominal) 0 – 9.99 Watt 0.07 Watt (nominal) 0.00– 9.99 Amp 2.40 Amp (nominal) 0– 99.9 deg C 45.0 deg C (nominal) LOCK (default) UNLOCK 0 – 9.9 VDC 3.8 VDC (nominal) 0 – 99.9% 100% (nominal) 0 – 99.9% 100% (nominal) QAM Radio TX Status Freq xxxx.xxx MHz TX Xmtr FORC Tx LOCK Synth Tx AFC LO Xctr 3.8 100 100 Summary Displays the transmitter output carrier frequency Status of transmitter: ON in a hot standby mode Forced ON Output Power of TX. This menu item does not appear when the unit is configured for DTV. Reverse (or reflected) power at antenna port. This menu item does not appear when the unit is configured for DTV. Power amplifier current consumption. This menu item does not appear when the unit is configured for DTV. Power amplifier temperature. This menu item does not appear when the unit is configured for DTV. Indicates phase lock of the 1st LO 1st LO PLL AFC Voltage 1st LO relative power level Transmit module’s relative output power level EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-22 3.4.16 QAM Radio RX Status QAM Radio RX Status Freq Function Freq A XMTR FORC -80 dBm AUTO RX SYNTH AFC LO LOCK 4.4 100.0 % Settings 2300.00 MHz Summary Displays the receiver operating frequency Transfer status of receiver: Is operating, ready for transfer FORCED (default) -30.0 to -90.0 dBm ATTEN SYNTH AFC LO MHz RX Rcvr RSL Atten TRAFFIC RSL xxxx.xx AUTO (default) ON OFF LOCK (default) UNLOCK 0 – 9.9 VDC 3.5 VDC (nominal) 0 – 99.9% 100% (nominal) Is operating, will not transfer (forced ON) Received signal level (signal strength) Nominal level dependent upon customer path/system gain Receiver PIN attenuator setting: Controlled by internal software Forced ON Forced Off Indicates phase lock of the 1st LO 1st LO PLL AFC Voltage 1st LO relative power level 3.4.17 QAM Radio TX Control QAM Radio TX Control TX Radiate Function TX-A Radiate Settings AUTO (default) ON OFF DataNex AUTO Summary Transmitter radiating, but folds back output power on high antenna VSWR (REV PWR) Transmitter radiating Transmitter not radiating EMS Wireless, DATA-20 Digital Radio 3-23 Front Panel Operation 3.4.18 QAM Radio RX Control QAM Radio RX Control RX Atten Function RX-A ATTEN DataNex AUTO Settings AUTO (default) Summary ON, and is activated on high signal level ON OFF ON always OFF EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-24 3.4.19 QAM Modem Configure QAM Modem Configure Power-On Default 32Q/5 Mode/Effic 2048 k INVRT 18 Data Rt Intrlv Spctrm Fltr Encode Test Loopback Function Interface DATA RATE INTERLEAVE SPECTRUM FILTER ENCODING TEST Loopback DataNex DVB PRBS23 CLR(OFF) Settings QPSK/2, 16Q/4, 32Q/5, 64Q/6, 128Q/7, 256Q/8 N x 64 kbps, 3 (default) 12 2,17 2,34 2,51 2,68 2,102 2,204 INVERT (default) Summary Default is 64QAM 18 15 (default) 12 DVB (default) NORMAL (default) PRBS15, PRBS23 CLR (Off) RMT+LOC RPTR Nyquist roll-off factor Valid range depends upon configuration. Interleave depth. 1 to 204 Raw data format Test pattern length Loopback mode EMS Wireless, DATA-20 Digital Radio 3-25 Front Panel Operation QAM Modem Configure (continued) QAM Interface DTE Trnk Intfc TX CLOCK Clk Src Recov Clk Ph Norm TX Clk Out Clk Ph Norm RX Out Data Src Norm Clk Src Norm Clk Ph Norm Qmdm FVERS XVER Function Interface Settings Trunk Radio (bkpln) Clk Src (Tx Clock) Internal, EXT TXC, EXT RXC, Recovered Inverted, Normal Clk Ph (Tx Clock) Clk Ph (Tx Clock Out) Data Src (Rx Out) 1.5 2.1 Summarys Uses Trunk for I/O. Uses Backplane for I/O. Clock source of the Transmitter. Clock Phase of the Transmitter. Inverted, Normal Clock Phase of the Transmitter Clock Out. Norm, RPT, Loop Data Source of the Receiver Out. Normal means the source is either BKPLN or TRNK; RPT sets the radio to Repeater; Loop sets the radio to loopback mode. Clock Source of the Receiver Out. Internal, EXT TXC, Clk Src (Rx EXT RXC, Recov Out) Clk Ph (Rx Out) Norm, Inverted Clock Phase of the Receiver Out. Fvers Xvers Internal is the internal clock of the DATA-20; EXT TXC is the External Transmit Clock; EXT RXC is the External Receive Clock; Recovered is the recovered clock from the receiving RF. NOTE: See the User Clock Options Conceptual Diagram in Figure 3-4 below for clarification. DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3.4.19.1 3-26 Typical Configuration A typical installation of DATA-20 Digital Radios involves configuring each DATA-20 as either Data Communications Equipment (DCE) or as Data Terminal Equipment (DCE), as illustrated below: Tx Clock Rx Clock Telecom Equipm ent Configured as DCE Configured as DTE Configured as DTE Repeater (DCE coupled with a DTE) Configured as DCE A DCE coupled together with a DTE enables the signal to be relayed to another DCE. This configuration is called a Repeater. A network can consist of as many Repeaters as necessary. The following sub-sections describe how to configure the DATA-20 a DCE or as a DTE. 3.4.19.2 DATA-20 as Data Communications Equipment (DCE) By default, the DATA-20 is configured as Data Communications Equipment (DCE). In the mode, the device recovers the transmitted clocks and effectively performs as a modem. DataNex EMS Wireless, DATA-20 Digital Radio 3-27 Front Panel Operation Configured as DCE To configure the DATA-20 as a DCE, select the following clock settings in the System menu: QAM Inerface Intfc DCE Trunk TX CLOCK Clk Src Recov Clk Ph Norm TX CLK OUT Clk Ph Norm RX CLOCK Clk Src Recov Clk Ph Norm 3.4.19.3 DATA-20 as Data Terminal Equipment (DTE) When configured as Data Terminal Equipment (DTE), the DATA-20 gets its clock from an external source, such as a telecommunications device. Tx Clock Rx Clock Telecom Equipm ent DataNex Configured as DTE EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-28 To configure the DATA-20 as a DTE, make the following clock selections in the System menu: QAM Interface Intfc DTE Trunk TX CLOCK Clk Src EXT TXC Clk Ph Norm TX CLK OUT Clk Ph Norm RX CLOCK Clk Src EXT TXC Clk Ph Norm DataNex EMS Wireless, DATA-20 Digital Radio 3-29 3.4.19.4 Front Panel Operation User Clock Options Conceptual Diagram Figure 3-4. User Clock Options Conceptual Diagram DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-30 3.4.20 QAM Radio TX Configure QAM Radio TX Config Freq xxxx.xx MHz QAM Radio TX Config LO Side LOW LO Freq 1020.0000 MHz LO Step 25.0 KHz press 'ENTER' press 'ESC' Save Setting ? No press "Left arrow" to say YES press 'ENTER' Function FREQ Settings 2300.00 MHz LO Side LOW HIGH 2370 MHz 25.0 KHz LO Freq LO Step DataNex Summary Displays the frequency of the transmitter and allows the user to make frequency changes. LOW: LO freq is less than carrier freq. High: LO freq is greater than carrier freq. Programming frequency step size EMS Wireless, DATA-20 Digital Radio 3-31 Front Panel Operation 3.4.21 QAM Radio RX Configure QAM Radio RX Config Freq xxxx.xx MHz QAM Radio RX Config LO Side LOW LO Freq 1020.0000 MHz LO Step 25.0 KHz press 'ENTER' press 'ESC' Save Setting ? No press "Left arrow" to say YES press 'ENTER' Function FREQ Settings 2300.00MHz LO Side LOW HIGH 2370.00 MHz 25.0 KHz LO Freq LO Step Summary Displays the frequency of the receiver and allows the user to make frequency changes. LOW: LO freq is less than carrier freq. High: LO freq is greater than carrier freq. Programming frequency step size 3.5 NMS/CPU PC Configuration Software The NMS/CPU card is configured with a Windows-based PC software package. The hardware is accessed through the serial port on the NMS card back panel. See the manual for EMS Wireless DATA-20 Configuration Software for more information. 3.6 Up/Down Converter: Frequency Adjust 3.6.1 TX Frequency Adjust It is possible to change the carrier frequency of the transmitter via the front panel. Before changing frequency ensure that this is carried out in a controlled environment with test equipment to ensure that you are transmitting the defined frequency: DataNex EMS Wireless, DATA-20 Digital Radio Front Panel Operation 3-32 1. Power-up the unit and navigate the LCD screens as follows: QAM Radio Launch CONFIGURE TXA QAM Radio TX Config Freq xxxx.xx MHz 1. Using the cursors, change to the desired frequency. Press ENTER and the TX will most likely lose AFC LOCK. 2. Navigate the LCD screens to monitor the AFC voltage as follows QAM Radio Launch STATUS TXA TX AFC LO Xctr 4.5 50 50 VDC 1. Ensure that the voltage reads 0.5 to 9.5 +/- .25 VDC. 2. The TX should achieve AFC LOCK and the operation is successful. 3.6.2 AFC Level—RX It is possible to change the operating frequency of the receiver via the front panel. Before changing frequency ensure that this is carried out in a controlled environment with test equipment to ensure that you are transmitting the defined frequency: 1. Power-up the unit and navigate the LCD screens as follows: QAM Radio Launch CONFIGURE RXA QAM RADIO RX Config Freq DataNex xxxx.xx MHz EMS Wireless, DATA-20 Digital Radio 3-33 Front Panel Operation 1. Using the cursors, change to the desired frequency. Press ENTER and the RX will most likely lose AFC LOCK. 2. Navigate the LCD screens to monitor the AFC voltage as follows QAM Radio Launch STATUS RXA RX SYNTH AFC LO LOCK 4.5 VDC 100 % 3. Ensure that the voltage reads 0.5 to 9.5 +/- .25 VDC. 4. The RX should achieve AFC LOCK and the operation is successful. DataNex EMS Wireless, DATA-20 Digital Radio 4 Data Interface Cables MUX CHANNEL HD15M TXD_I_A TXD_I_B RXD_O_A RXD_O_B TXC_I_A TXC_I_B TXC_O_A TXC_O_B RXC_O_A RXC_O_B SIG_GND INDICATES TWISTED PAIR V.35 FEMALE (DCE) 13 14 AA 10 11 CONN SHELL GND SHIELD SEND DATA (A) SEND DATA (B) RECEIVE DATA (A) RECEIVE DATA (B) TERMINAL TIMING (A) TERMINAL TIMING (B) SEND TIMING (A) SEND TIMING (B) RECEIVE TIMING (A) RECEIVE TIMING (B) SIGNAL GROUND REQUEST TO SEND CLEAR TO SEND DATA SET READY DATA TERMINAL READY RECEIVE LINE SIGNAL DETECTOR CHASSIS GROUND Figure 4-1. Mux Channel – V.35 (DCE) Appendix 4-2 Figure 4-2. Trunk to Trunk Cable (Mux-Trunk Null) DataNex EMS Wireless, DATA-20 Digital Radio 5 Appendix 5.1 Abbreviations & Acronyms A/D, ADC Analog-to-Digital, Analog-to-Digital Converter ADPCM Adaptive Differential Pulse Code Modulation AES/EBU Audio Engineering Society/European Broadcast Union AGC Auto Gain Control ATM Automatic Teller Machine BER Bit Error Rate CMRR Common Mode Rejection Ratio Codec Coder-Decoder CPFSK Continuous-Phase Frequency Shift Keying CSU Channel Service Unit D/A, DAC Digital-to-Analog, Digital-to-Analog Converter DB Decibel DBc Decibel relative to carrier DBm Decibel relative to 1 mW DBu Decibel relative to .775 Vrms DCE Data Circuit-Terminating Equipment DSP Digital Signal Processing DSTL Digital Studio-Transmitter Link DTE Data Terminal Equipment DVM Digital Voltmeter EIRP Effective Isotropic Radiated Power EMI Electromagnetic Interference ESD Electrostatic Discharge/Electrostatic Damage FEC Forward Error Correction FET Field effect transistor FMO Frequency Modulation Oscillator FPGA Field Programmable Gate Array Appendix 5-2 FSK Frequency Shift Keying FT1 Fractional T1 IC Integrated circuit IEC International Electrotechnical Commission IF Intermediate frequency IMD Intermodulation Distortion ISDN Integrated-Services Digital Network Kbps Kilobits per second KHz Kilohertz LED Light-emitting diode LO, LO1 Local oscillator, first local oscillator LSB Least significant bit Mbps Megabits per second Modem Modulator-demodulator Ms Millisecond MSB Most significant bit MUX Multiplex, Multiplexer µs Microsecond µV Microvolts NC Normally closed NMS Network Management System NO Normally open PCB Printed circuit board PCM Pulse Code Modulation PGM Program PLL Phase-Locked Loop QAM Quadrature Amplitude Modulation Transmission Rate RF Radio Frequency RPTR Repeater RSL Received Signal Level (in dBm) RSSI Received Signal Strength Indicator/Indication RX Receiver SCA Subsidiary Communications Authorization SCADA Security Control and Data Acquisition SNR Signal-to-Noise Ratio DataNex EMS Wireless, DATA-20 Digital Radio 5-3 Appendix SRD Step Recovery Diode STL Studio-Transmitter Link TDM Time Division Multiplexing THD Total harmonic distortion TP Test Point TTL Transistor-transistor logic TX Transmitter Vrms Volts root-mean-square Vp Volts peak Vp-p Volts peak-to-peak VRMS Volts, root-mean-square VSWR Voltage standing-wave ratio ZIN Input Impedance ZOUT Output Impedance 5.2 Conversion Chart microvolts to dBm (impedance = 50 ohms) microvolts dBm microvolts dBm 0.10 -127.0 180 -61.9 0.25 -119.0 200 -61.0 0.50 -113.0 250 -59.0 0.70 -110.1 300 -57.4 1.0 -107.0 350 -56.1 1.4 -104.1 400 -54.9 2.0 -101.0 450 -53.9 2.5 -99.0 500 -53.0 3.0 -97.4 600 -51.4 3.5 -96.1 700 -50.1 4.0 -94.9 800 -48.9 4.5 -93.9 900 -47.9 5.0 -93.0 1,000 -47.0 6.0 -91.4 1,200 -45.4 7.0 -90.1 1,400 -44.1 8.0 -88.9 1,600 -42.9 DataNex EMS Wireless, DATA-20 Digital Radio Appendix 5-4 microvolts dBm microvolts dBm 9.0 -87.9 1,800 -41.9 10 -87.0 2,000 -41.0 11 -86.2 2,500 -39.0 12 -85.4 3,000 -37.4 14 -84.1 3,500 -36.1 16 -82.9 4,000 -34.9 18 -81.9 4,500 -33.9 20 -81.0 5,000 -33.0 25 -79.0 6,000 -31.4 30 -77.4 7,000 -30.1 35 -76.1 8,000 -28.9 40 -74.9 9,000 -27.9 45 -73.9 10,000 -27.0 50 -73.0 22.36 mV -20 (10 mW) 60 -71.4 70.7 mV -10(100 mW) 70 -70.1 223.6 mV 80 -68.9 707.1 mV +10 (10mW) 90 -67.9 2.23 V +20(100 mW) 100 -67.0 7.07 V +30 (1 W) 120 -65.4 15.83 V +37 (5 W) 140 -64.1 22.36 V +40 (10 W) 160 -62.9 DataNex (1 mW) EMS Wireless, DATA-20 Digital Radio 5-5 DataNex Appendix EMS Wireless, DATA-20 Digital Radio Appendix DataNex 5-6 EMS Wireless, DATA-20 Digital Radio
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