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

Users Manual

ITCR Base Radio User's Manual and Installation Instructions Applicable Models: 63030-24, 63030-48
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential ii Do Not Distribute 5/8/2013 Revision History Revision Date Summary of Changes 0.1 Initial draft. 0.2 Changes by Neil Ross. 0.3 8/29/2011 Add notices to user and expanded RF exposure Information. General editing. 0.4 9/8/2011 Fix errors and omissions 0.5 10/11/2011 Revise Section 1.2, 1.6, 2.2, 2.3, insert new Section 3, revise Section 4. Minor edits to 4.1 and 5.3. 2 5/8/2013 Update USA Frequency Coverage 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 © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 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 Limiting RF Exposure ............................................................................................... 3 2.3 Fixed Antenna Guidelines ....................................................................................... 4 2.4 RF Interference to Residential Receivers ................................................................ 4 2.5 Equipment Modifications ....................................................................................... 5 3. Base Transmitter Operation ............................................................................................... 5 3.1 Base Radio Channelization and Frequency Range .................................................. 5 3.2 Base Channel Restrictions ....................................................................................... 6 3.3 Base Radiated Power Limits .................................................................................... 6 4. Setup and Configuration for the Base Radio ...................................................................... 7 4.1 Input Power ............................................................................................................. 8 4.2 Ethernet Connection ............................................................................................... 8 4.3 RF Output Termination ........................................................................................... 8 5. Tuning the Base Radio ........................................................................................................ 8 5.1 Equipment Required ............................................................................................... 9 5.2 Set up the Radio for Testing.................................................................................... 9 5.3 Measure and Calibrate Reference Crystal Oscillator Parameters ........................ 10 5.4 Measure and Adjust Output Power ...................................................................... 11 5.5 Check and Adjust RF Output Channel Frequency ................................................. 12 6. Operations ........................................................................................................................ 13
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential iv Do Not Distribute 5/8/2013 6.1 Restore Factory Settings ....................................................................................... 13 6.2 Display Software and Firmware Revision Numbers.............................................. 13 6.3 Display Radio Identification Information .............................................................. 13 Tables Table 1. Base Radio Input Power Parameters………………………………………………………………..8
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 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 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. The Base station radio is normally positioned inside an equipment hut or other unoccupied building at the base of an antenna tower, all within access-controlled property that is generally located away from residential areas. The equipment is installed, serviced and maintained only by professional telecommunications workers. The Base communicates via packetized messages in a half duplex manner meaning that transmission and reception are not simultaneous. The Base organizes
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 2 Do Not Distribute 5/8/2013 transmissions into three second superframes by using slotted TDMA in the majority of the frame followed by collision sense multiple access (CSMA) in the remainder of the frame. Packet radio messages are passed between Base and mobiles (primarily locomotives but may also include maintenance equipment on the rails) and from Wayside (rail monitoring and control points) stations. The Base radio is also in two-way communication with the back office of the owner railroad company via its ethernet LAN port. Back offices of owner railroads are also linked to support foreign railroad traffic on a given railroad company’s track. 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 fans 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 50W PEP rated Base radio supports 50-ohm resistive loads using N-type connectors for narrowband RF antenna(s), max VSWR 3:1. The connector marked TX/RX should be routed to the transmit or transmit/receive antenna. The connectors marked RX1 and RX2 are provided for optional use of separate receiving antennas.
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 Do Not Distribute 3 The Base also has a TNC connector for the GPS receiver antenna. The GPS antenna can be active (3.3Vdc, 50mA max) or passive. 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 Limiting RF Exposure Please refer to the RF Energy Exposure Guide packed with each radio for specific information regarding safe distances that must be maintained between personnel and energized transmitting antennas. The information in the RF Energy Exposure Guide is determined from FCC and Industry Canada rules that when followed, limit human exposure to radio frequency energy to acceptable levels. Note that although the Base station is expected to be sited, installed and maintained only by professionals in a controlled exposure environment, the RF Energy Exposure Guide lists the larger lateral safe distances for an uncontrolled environment. Obeying these limits will protect both railroad employees and the general public. The Base 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. Maximum Permitted Exposure (MPE) limit for devices in the presence of the general public in the 100-300 MHz range is 0.2 mW/cm2 = 2 W/m2 vs. 10 W/m2 in a controlled exposure environment. This radio is intended for use by railroad employees who have full knowledge of their exposure and can exercise control over their exposure to meet FCC and IC limits. This radio device is not intended for use by consumers or the general population. Base station antennas must be positioned on towers or non-residential buildings that are generally unoccupied except while servicing the equipment therein.
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 4 Do Not Distribute 5/8/2013 The table in the RF Energy Exposure Guide lists the calculated lateral distances to be maintained between the general public and an operational Base transmitter antenna for two antenna types suitable for fixed Base applications. 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. 2.3 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 antenna location, power and effective antenna height per 47CFR Subpart T §90.701 et. seq., or Industry Canada SRSP-512 §6.3 as applicable. The section title Base Radiated Power Limits further below provides additional information on how to comply with ERP limits. • Refer to the RF Energy Exposure Guide for specific guidelines regarding the siting and installation of fixed antennas. • Acceptable fixed antenna types are listed in the lateral separation distance tables in the RF Energy Exposure Guide. • Install antennas in accordance with the manufacturer’s instructions. • Disable the transmitter when installing or servicing its antenna or transmission line. • Maintain a safe distance from energized transmitting antennas. Refer to the table of safe distances for Base radios in the RF Energy Exposure Guide packed with each radio. • 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. Contact Meteorcomm before using other antennas. 2.4 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.
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 Do Not Distribute 5 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. 2.5 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. Base Transmitter Operation It is the responsibility of the licensee to operate this radio transmitter in compliance with the terms of the license and FCC or Industry Canada service rules for 220-222 MHz, i.e., FCC Rules Part 90T and Industry Canada SRSP-512, or in the U.S. only, operation on 217.6-218 and 219-220 MHz frequencies is subject to FCC Rules Part 80. 3.1 Base Radio Channelization and Frequency Range The Base radio can be licensed and configured to transmit on any one of 80 selectable 25-kHz spaced channels ranging from 220.0125 to 221.9875 MHz inclusive in the 220-222 MHz Radio Service defined by Part 90 Subpart T. The spectrum
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 6 Do Not Distribute 5/8/2013 included corresponds to all 5-kHz wide FCC channels numbered from 1 at 220.0025 MHz to 400 at 221.9975 MHz. Each Base radio transmission occupies five of the FCC-defined 5-kHz channels. The lowest Base radio channel center frequency is in the center of FCC channel 3 and the next is FCC channel 8, then 13, 18, and so on, up to the highest in the center of channel 398. In the USA only, the radio can be licensed and configured to operate on 56 additional (Part 80) frequencies in the ranges 217.6125 to 217.9875 MHz and 219.0125 to 219.9875 MHz. 3.2 Base Channel Restrictions Section 90.715 of the FCC Rules lists the authorized frequencies of the 400 total 5 kHz-wide channels. According to §90.733(d) these can be aggregated into larger channel widths with the exception of FCC channels 161-170 and 181-185. Therefore, the Base radio may not transmit on those channels or their 221 MHz counterparts, 361-370 and 381-385. This corresponds to Base frequencies, 220.8125, 220.8375, 220.9125, 221.8125, 221.8375, and 221.9125 MHz. Please refer to Part 90 Subpart T and SRSP-512 for additional frequency use restrictions in Canadian and Mexican border areas. 3.3 Base Radiated Power Limits It is the responsibility of the licensee to comply with the effective radiated power limits based on operating frequency, geographic location, and effective antenna height set out in 47CFR Parts 80 and 90 or Industry Canada SRSP-512 §6.3, as applicable. Important: The following supplementary antenna system information discusses means for the licensee to comply with regulatory power limits. Licensees must comply with the specific power vs. HAAT limitations for fixed base stations. U.S. and Canadian power limits differ in this regard. Licensees should also note that fixed installations transmitting between 221 and 222 MHz must limit effective radiated power (ERP) to 50W or 10*log(50) + 30 = 47dBm
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 Do Not Distribute 7 PEP referenced to the 2.15 dBi gain of a dipole. The EIRP for this case is 49.15 dBm. Also note that the maximum ERP on FCC/IC channels 196-200 at 220.975 to 221.000 MHz is 2 watts. Common single element fixed station antennas typically exhibit 2.1 to 5 dBi (0 to 2.9 dBd) gain and being vertically polarized, are usually omnidirectional. Multi-element antennas are designed to concentrate RF radiated power toward the horizon and away from the sky and the earth and depending on the design criteria provide azimuthal gain directivity that decreases ERP in the direction of other base stations or increases ERP in a specific direction. They may also be used to make up for large losses between transmitter and antenna. The isotropic gain of a commonly-used two-element exposed dipole antenna is typically 7 to 8 dBi. Once the allowable ERP is determined by applying all power restrictive rules from above and the antenna gain is known, the transmitter peak envelope power output feeding the transmission line is determined by subtracting the antenna gain in dBi from the EIRP and adding the loss from the antenna feedline and connectors plus the loss from any combiners, cavity filters or lightning arresters. If the net value is greater than or equal to 48.75 dBm, then the 75W maximum power of the Base transmitter can be used. If the value is less than 48.75 dBm, then the transmitter output power should be reduced to the net value. Example for the 50W ERP case: Antenna gain = 8 dBi, feedline and connector loss = 2 dB. Assuming no other losses, the transmitter power output limit = 49.15-8+2 = 43.15 dBm PEP or 20.7 W PEP. In this case, the Base RF output power should be adjusted to 20.7 W PEP or less. If the calculated transmitter power limit is less than the minimum Base rated power of 10W PEP = 40 dBm PEP, then an external RF attenuator would be inserted in the feed line to increase the loss between transmitter to achieve compliance. 4. 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.
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 8 Do Not Distribute 5/8/2013 4.1 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. Table 1. 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 with 50 ohm load 7.5A for max average operating current 6A peak max with 50 ohm load 4A for max average operating current 4.2 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. 4.3 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. 5. Tuning the Base Radio There are three parameters to test and potentially tune before/during RF testing:
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 Do Not Distribute 9 • Master reference crystal oscillator frequency • 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. 5.1 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. 5.2 Set up the Radio for Testing 1. Connect a cable that has a CAT5 ethernet connector on one end and an 8-pin M12 cable connector on the other end (MCC P/N 14001627-01). Connect the M12 connector to the radio 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. 2. Find the input voltage rating marking on the radio chassis near the power input terminal block. 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. 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 © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 10 Do Not Distribute 5/8/2013 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. 5.3 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: dsp,watchdog,off dsp_mode,idle dsp_mode,test 3. Reduce output power to approximately 2W by typing: cal,set,igain,-1000 cal,set,qgain,-1000 4. Begin transmitting a test tone offset +8kHz from the carrier: l1_test,stop l1_test,set,txmod,cw l1_test,set,txfreq,220012500 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. l1_test,set,txmod,dqpsk
ITCR Base Radio User's Guide © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 Do Not Distribute 11 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 cal 2. Note the value for “xo” in the cal factors table that is displayed. 3. At the XtermW command line, type: cal,set,xo,xx 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. 5.4 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. The CCDF function on the VSA is recommended for peak power measurement. 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 © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 12 Do Not Distribute 5/8/2013 To measure and adjust output power: 1. At the XtermW command line, begin transmitting a π/4-DQPSK signal by typing: dsp,watchdog,off dsp_mode,test l1_test,stop l1_test,set,txmod,dqpsk l1_test,start,tx 2. View the calibration settings by typing: 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. cal,set,igain,xxxx 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. 5.5 Check and Adjust RF Output Channel Frequency 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 © 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential 5/8/2013 Do Not Distribute 13 l1_test,stop l1_test,set,txfreq,221987500 l1_test,start,tx 4. Note that in the USA the bottom and middle frequencies are 217.6125 MHz and 219.8125 MHz. 6. Operations This section provides commands used during normal operation of the Base radio. 6.1 Restore Factory Settings To restore factory settings without cycling the radio: • At the XtermW command prompt, type: factory 6.2 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 6.3 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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