Meteorcomm 63030-48 Packet Data Transceiver - Fixed Use - 48VDC User Manual ITCR Base Radio User s Guide

Meteorcomm LLC Packet Data Transceiver - Fixed Use - 48VDC ITCR Base Radio User s Guide

Contents

User Manual 2

ITCR Base Radio User's Manual and Installation Instructions Applicable Models: 63030-24, 63030-48 Note: The final version of this manual will include a French translation.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential ii Do Not Distribute 9/8/2011 Revision History Revision Date Summary of Changes Contributor 0.1 Initial draft. Neil Ross 0.2 Changes by Neil Ross. 0.3 8/29/2011 Add notices to user and expanded RF exposure Information. General editing. Fred Cleveland 0.4 9/8/2011 Fix errors and omissions Fred Cleveland Document Number: HWD-PTC- Date Complete: Confidential and Proprietary Notice This document contains information that is considered confidential and/or proprietary to Meteorcomm® LLC (“MCC”) and shall not be disclosed, transmitted, distributed, duplicated or used in whole or in part except as agreed under separate contract between MCC and the recipient. All information contained herein shall be kept confidential. MCC makes no representations or warranties, express or implied. All warranties, including but not limited to, warranties of merchantability, fitness for a particular purpose, and non-infringement are hereby expressly disclaimed. Unless expressly authorized in writing, the name and trademarks of MCC may not be used. All other rights are reserved. Disclaimers This is a draft document only but provides sufficient information to support an initial engineering project. The estimates contained herein represent MCC’s current best estimates and will be refined over time. MCC makes no representations or warranties of any kind, express or implied, about the completeness or accuracy of the values contained herein. Any reliance placed on these values is done strictly at the risk of the user. Any designs contained in the document were developed using standard layout guidelines for most common and practical applications. All schematic symbols, footprints and layer definitions should be validated by the customer’s own technical experts as application specific requirements may differ. By downloading, using, or referring to a schematic, design or footprint, the user agrees to release MCC from all liability related to the use or application of the schematic, design or footprint. ©2011 Meteorcomm LLC. All rights reserved. Meteorcomm is a registered trademark of Meteorcomm LLC. Document Number: XXX-XXX-0000XXXX
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute iii Table of Contents 1. Overview ............................................................................................................................. 1 1.1 Applicable Radio Models and Identifiers ................................................................ 1 1.2 General Description ................................................................................................ 1 1.3 Chassis ..................................................................................................................... 2 1.4 Ports and Ethernet Connectors .............................................................................. 2 1.5 Power Connectors ................................................................................................... 2 1.6 Antenna Connectors ............................................................................................... 2 2. Important Information for the User ................................................................................... 3 2.1 Transmitter warm-up period. ................................................................................. 3 2.2 RF Safety ................................................................................................................. 3 2.3 Limiting RF Exposure ............................................................................................... 4 2.4 Fixed Antenna Guidelines ....................................................................................... 4 2.5 RF Interference to Residential Receivers ................................................................ 5 2.6 Equipment Modifications ....................................................................................... 6 3. Setup and Configuration for the Base Radio ...................................................................... 6 3.1 Input Power ............................................................................................................. 6 3.2 Ethernet Connection ............................................................................................... 7 3.3 RF Output Termination ........................................................................................... 7 4. Tuning the Base Radio ........................................................................................................ 7 4.1 Equipment Required ............................................................................................... 8 4.2 Set up the Radio for Testing ................................................................................... 8 4.3 Measure and Calibrate Reference Crystal Oscillator Parameters .......................... 9 4.4 Measure and Adjust Output Power ...................................................................... 10 4.5 Check and Adjust RF Output Channel ................................................................... 11 5. Operations ........................................................................................................................ 12 5.1 Restore Factory Settings ....................................................................................... 12 5.2 Display Software and Firmware Revision Numbers ............................................. 12 5.3 Display Radio Identification Information .............................................................. 12
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential iv Do Not Distribute 9/8/2011 Table of Figures Table 1. Required Distance Between Personnel and Transmitting Antenna ..................... 4 Table 2. Base Radio Input Power Parameters………………………………………………………………..6
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute 1 1. Overview This document provides important radio frequency safety information and instructions for the basic operation and adjustment of the base station radio. This document pertains to Meteorcomm Interoperable Train Control Radio Network (ITCR) Base Radio models, numbers 63030-24 and 63030-48. Operation of these two models is identical except for input power requirements of 24 Vdc and 48 Vdc, respectively. 1.1 Applicable Radio Models and Identifiers This document applies to two Base radio models listed below along with their regulatory identifiers. These two models differ only in their power supply input voltage and associated power supply circuits. Model: 63030-24 FCC ID: BIB63030-24 IC: 1300A-6303024 1.1.1 Model: 63030-48 FCC ID: BIB63030-48 IC: 1300A-6303048 1.2 General Description Meteorcomm base radios are designed to satisfy the industry standard Positive Train Control (PTC) requirements as part of an integrated 220 MHz radio network. The Base radio, Locomotive radio, and Wayside radio form the transportation backbone on which a messaging application provides communication capabilities between railroad assets and their back offices. The ITCR is designed to provide communication in an interoperable fashion enabling messaging to occur across railroad boundaries.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 2 Do Not Distribute 9/8/2011 1.3 Chassis Base radios are housed in electrically sealed metal cases. The Base radio fits within a standard 19” rack mount and has a maximum depth of 24 inches and a height rack of 4 RUs, weighing less than 25 lbs. It contains a fan with a temperature sensor that can be set to turn on at a configurable temperature. All input/output ports are grounded and/or shielded. In addition, best engineering practices have been employed with respect to internal shielding, unit assembly and PCB design in an effort to minimize potential sources of unwanted radiated emissions. 1.4 Ports and Ethernet Connectors The Base radio supports two RJ45 Ethernet I/O ports, each on its own network. 1.5 Power Connectors The Base radio has two studs (marked ‘+’ and ‘-‘) to support the connection of power cables. See input power requirements further below. 1.6 Antenna Connectors The Base radio supports N-type connectors for narrowband RF antenna(s). The connector marked TX/RX should be routed to the transmit antenna. The connectors marked RX1 and RX2 are provided for optional use of separate receiving antennas.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute 3 2. Important Information for the User 2.1 Transmitter Warm-up Period. The base transmitter uses a precision oven-controlled crystal oscillator (OCXO). The OCXO warm-up period is one minute minimum after application of input power before any transmission should commence. 2.2 RF Safety This radio is intended for use in occupational/controlled conditions, where users have full knowledge of their exposure and can exercise control over their exposure to meet FCC and IC limits. This radio device is NOT authorized for general population, consumer, or any other use. This two-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide communications between two or more users over a distance. It uses RF energy or radio waves to send and receive calls. RF energy is one form of electromagnetic energy. Other forms include, but are not limited to, sunlight and x-rays. RF energy, however, should not be confused with these other forms of electromagnetic energy, which when used improperly, can cause biological damage. Very high levels of x-rays, for example, can damage tissues and genetic material. Experts in science, engineering, medicine, health, and industry work with organizations to develop standards for safe exposure to RF energy. These standards provide recommended levels of RF exposure for both workers and the general public. These recommended RF exposure levels include substantial margins of protection. All 2-way radios marketed in North America are designed, manufactured, and tested to ensure they meet government-established RF exposure levels. In addition, manufacturers also recommend specific operating instructions to users of 2-way radios. These instructions are important because they inform users about RF energy exposure and provide simple procedures on how to control it. Please refer to the following Web sites for more information on what RF energy exposure is and how to control your exposure to assure compliance with established RF exposure limits. http://www.fcc.gov/oet/rfsafety/rf-faqs.html
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 4 Do Not Distribute 9/8/2011 http://www.osha.gov/SLTC/radiofrequencyradiation/index.html 2.3 Limiting RF Exposure This transmitter is intended to be operated with a fixed antenna in an Occupational/Controlled Exposure environment per FCC OET 65 or Controlled Use Environment per IC RSS-102 and is not subject to specific absorption rate (SAR) measurements. The Maximum Permitted Exposure (MPE) limit for this type device in the 100-300 MHz range is 1mW/cm2 = 10W/m2. The table below lists the calculated lateral distances to be maintained between personnel and an operational base station transmitter antenna for two typical antenna gains, 2.1 dBi for a vertical dipole or a vertical monopole over ground plane and 8 dBi for a 2-element collinear vertical dipole antenna. Table 1. Required Distance Between Personnel and Transmitting Antenna Rated Power, W PEP Maximum Duty Cycle, % Antenna Gain, dBi Minimum Lateral Spacing, cm 75 50 2.1 70 75 50 8 137 Note: RF exposure compliance at multiple transmitter sites must be addressed on a site-by-site basis. It is the responsibility of the licensee to ensure compliance with maximum exposure limits. 2.4 Fixed Antenna Guidelines This section contains antenna information and additional notes regarding methods to limit RF exposure. The licensee is required to comply with limits on power and effective antenna height per 47CFR 90.729. Install base station antennas on permanent outdoor structures that are not intended for human occupation. Acceptable antennas are vertical monopole over ground plane, vertical dipole, multiple collinear vertical dipole, or similar designs.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute 5 Unauthorized antennas, equipment modifications or attachments could invalidate any equipment warranty or authority to transmit. Modification could damage the radio and may violate FCC or IC regulations. Install all antennas in accordance with the manufacturer’s instructions. Maintain a safe distance from energized transmitting antennas. See above. Disable the transmitter when installing or servicing its antenna or transmission line. 2.5 RF Interference to Residential Receivers NOTICE TO USER: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. 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 the following measures: Reorient or relocation 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.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 6 Do Not Distribute 9/8/2011 2.6 Equipment Modifications Caution: Any changes or modifications to this equipment not expressly approved by the party responsible for compliance (in the respective country of use) could void the user’s authority to operate the equipment. 3. Setup and Configuration for the Base Radio Set up physical connections with the following: DC Power Ethernet RF output termination The sections below identify each of the physical connections. 3.1 Input Power A label on the radio chassis indicates the rated voltage of the base radio: 24 or 48V. The table below describes the power supply requirements for each type. Caution: Applying an incorrect voltage outside the rated voltage range of a Base radio can damage it. Confirm the voltage ratings of the radio and the power supply before applying power.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute 7 Table 2. Base Radio Input Power Parameters Parameter Base Radio Nominal DC Power Input Voltage 24VDC radio version 48VDC radio version Operational Range 21-27 Vdc (+/-12.5%) 42-54 Vdc (+/-12.5%) Damage limit 30VDC 60VDC Current Drain (while transmitting rated power) 11A peak max while transmitting into 50 ohm load 7.5A for max average operating current 6A peak max while transmitting into 50 ohm load 4A for max average operating current 3.2 Ethernet Connection Base radios use a standard CAT5 Ethernet cable connected between a PC and the maintenance port of the radio. Configure the PC network card with a fixed IP address of 10.10.1.254. You will use XtermW, a Meteorcomm terminal emulation program, to connect with and control the radio via commands issued at command prompts. 3.3 RF Output Termination The Base radio is rated for 75W PEP max into a 50 ohm resistive load. Base radios have a single TX/RX port with two additional ports for receiving only. For transmitter testing, connect the test equipment to the port labeled “TX/RX.” A suitable RF power attenuator should be used to protect test equipment. 4. Tuning the Base Radio There are three parameters to test and potentially tune before/during RF testing: Master reference crystal oscillator frequency
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 8 Do Not Distribute 9/8/2011 RF output power RF output channel Factory technicians tune the master reference crystal oscillator and set the RF gain for maximum rated output power. You may have to adjust the three parameters before or during RF testing by entering commands using XtermW or any other terminal emulation program. 4.1 Equipment Required 1. 10A DC power supply at rated voltage of base radio. 2. Personal computer with ethernet network adapter and Meteorcomm XtermW or equivalent terminal program installed. 3. 30 dB 100W RF power attenuator. 4. Vector spectrum analyzer for power and frequency measurements. 5. Optional 8+ digit frequency counter for frequency measurements. 6. External high stability time base (e.g., rubidium) accurate to 0.01 ppm. Can be internal to items 4 and 5. 4.2 Set up the Radio for Testing 1. Find the input voltage rating marking on the radio chassis. It is either 24VDC or 48VDC. Adjust a 10A DC power supply to the proper voltage; then disable its output. Observing polarity markings connect the power supply between the radio power terminals and the power supply. 2. Connect a CAT5 ethernet cable between the RJ-45 port labeled MAINT. Connect the other end to a computer network card. The default radio IP address is 10.10.1.254. Set the IP address of the computer network card to a compatible fixed address such as 10.10.1.1. The computer should have Meteorcomm XtermW or a similar terminal emulation program installed. 3. Apply power to the radio. Wait 30 seconds to open an XtermW session. Use the Edit/Configure Port window to set Port Type = TCP/IP, Protocol = Stream, TCP/IP Settings Host = 10.10.1.254, Port 4000. Select Device Type = MCC 6100 SDR (which also applies to ITC radios). Return Character = CR, Data Format = ASCII.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute 9 4. Attach a 100W 30 dB RF attenuator to the TX/RX N-type antenna connector. Attach an (e.g., Agilent MXA or PXA) vector spectrum analyzer or similar to the transmitter port for power and frequency measurements. The VSA should contain either a precision stability reference oscillator or attach an external rubidium reference to the VSA external reference input. 4.3 Measure and Calibrate Reference Crystal Oscillator Parameters The instructions below allow you to change the factory calibration settings for the master reference oscillator crystal. The new setting is stored in volatile memory and will revert to factory settings when the radio is powered off and then on. To check the master reference crystal oscillator frequency calibration: 1. Open an XtermW session. 2. Put the radio into test mode by typing: i. dsp,watchdog,off ii. dsp_mode,test 3. Reduce output power to approximately 2W by typing: i. cal,set,igain,-1000 ii. cal,set,qgain,-1000 4. Begin transmitting a test tone offset +8kHz from the carrier: i. l1_test,stop ii. l1_test,set,txmod,cw iii. l1_test,set,txfreq,220012500 iv. l1_test,start,tx 5. Use the frequency counter or frequency counting marker on the VSA to measure the output frequency. The measured value is exactly 8 kHz greater than the actual carrier frequency. The carrier frequency is normally well within 22 Hz (0.1 ppm) of the carrier frequency. 6. Alternate to the test tone: Substitute the following π/4-DQPSK modulation command for the second line in step 4. i. l1_test,set,txmod,dqpsk
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 10 Do Not Distribute 9/8/2011 7. Set the VSA to the center frequency of the channel and set it to demodulate the 16 ksym/second π/4-DQPSK emission and measure the error frequency which is referenced to the VSA center frequency. To adjust the master crystal reference oscillator parameters: 1. First, check the factory default setting for the crystal reference parameter by typing i. cal 2. Note the value for “xo” in the cal factors table that is displayed. 3. At the XtermW command line, type: i. cal,set,xo,xx ii. where xx is some value close to the original factory set value. 4. Use trial and error to determine the set point for the xo value to achieve the desired carrier frequency accuracy. To reset the XO tuning parameter to the factory setting: Power cycle the radio. 4.4 Measure and Adjust Output Power Caution: Avoid unnecessary adjustments. Exercise caution when setting I and Q gain values as damage to the radio can occur if gains are set too high. Base radios are rated for 75W PEP. To achieve this power radios are pre-calibrated at the factory. If additional tuning is required, use an appropriate method to determine PEP for a π/4-DQPSK signal and slowly increase/decrease I and Q gain levels from their nominal set point, as determined by issuing the command ‘cal’. A step of 100 points (for example, -250 to -150) is approximately equivalent to an increase of 2dB in power.
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 9/8/2011 Do Not Distribute 11 To measure and adjust output power: 1. At the XtermW command line, begin transmitting a π/4-DQPSK signal by typing: i. dsp,watchdog,off ii. dsp_mode,test iii. l1_test,stop l1_test,set,txmod,dqpsk l1_test,start,tx 2. View the calibration settings by typing: i. cal 3. Note the values for igain and qgain. They are normally matched. 4. Increase the output level by entering larger matched values or reduce output level using smaller matched values. Use cal command in between to verify the new settings. i. cal,set,igain,xxxx ii. cal,set,qgain,xxxx 5. Tune the VSA to the center of the channel frequency and use the CCDF function to measure the peak envelope power, average power and peak to average ratio. 4.5 Check and Adjust RF Output Channel You can adjust the RF output channel by stopping transmission, setting transmission frequency, and then starting transmission again. To adjust RF output channel: 1. Tune the radio to the bottom channel (220.0125MHz) by typing: l1_test,stop l1_test,set,txfreq,220012500 l1_test,start,tx 2. Tune the radio to the mid-channel (221.0125MHz) by typing: l1_test,stop, l1_test,set,txfreq,221012500 l1_test,start,tx 3. Tune the radio to the high channel (221.9875MHz) by typing:
ITCR Base Radio User's Guide © 2011 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 12 Do Not Distribute 9/8/2011 l1_test,stop l1_test,set,txfreq,221987500 l1_test,start,tx 5. Operations This section provides commands used during normal operation of the Base radio. 5.1 Restore Factory Settings To restore factory settings without cycling the radio: At the XtermW command prompt, type: factory 5.2 Display Software and Firmware Revision Numbers To display what software and firmware versions are installed on your radio: At the XtermW command prompt, type: rev 5.3 Display Radio Identification Information This section provides you with commands to display serial number and identification information. To display serial number information: At the XtermW command prompt, type: serialnumber To show current ID setting: At the XtermW command prompt, type: ID

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