Introduction
The SEL-3031 is a 900-MHz, license-free, spread-spectrum radio that reliably transports as many as three serial port communications channels in point-to-point or point-to-multipoint configuration as far as 32 km (20 mi) and as fast as 9600 to 38400 bps. The SEL-3031 comes in two mounting configurations: wall mount and rack mount. This quick-start guide focuses on point-to-point applications using the wall-mount model. For other applications and mounting configurations, please see the SEL-3031 Serial Radio Transceiver Instruction Manual (available at
www.selinc.com).
Figure 1 shows a simplified SEL-3031 application.
Figure 1 SEL-3031 Example Application
Getting Started
SEL-3031 Overview
Figure 2 shows the SEL-3031 wall-mount version.
Figure 2 Wall-Mount SEL-3031
SEL-3031 SEL-3031
Front-Panel Connections
USB Management Port. This port is used to configure the SEL-3031 radio.
Rear-Panel Connections
Serial Ports. Three EIA-232 ports can simultaneously transmit serial data at rates as fast as 38400 bps. Refer to the Specifications section of the SEL-3031 manual for further setting details and limitations.
Power Supply and Alarm Contact Output Connector. The SEL-3031 operates from a 9–30 Vdc power supply. The contact output is normally closed. If the SEL-3031 is enabled and operating correctly, the contact is held open. If the SEL-3031 detects an error or if power is turned off, the contact closes. You can use this contact to alert other equipment to a problem with the SEL-3031.
Antenna Connector. The antenna connector is a TNC type.
About RF exposure. The SEL-3031 transmitter module is approved for use only with specific antenna, cable, and output power configurations that have been tested and approved for use. Modifications to the SEL-3031, the antenna system, or to the power output that have not been explicitly specified by the manufacturer are not permitted and may render the radio noncompliant with applicable regulatory authorities. The radio equipment this manual describes emits radio frequency energy. The antenna(s) for this transmitter must not be collocated or operated in conjunction with any other antenna or transmitter.
CAUTION
Although the power level is low, concentrated energy from a directional antenna may pose a health hazard. Do not allow users to come closer than 23 cm (9 in.) to the antenna when the transmitter is operating in indoor or outdoor environments in the 900-MHz band.
Table 1 Front-Panel Status Indicator LED Functions
Label Color Description
ENABLE Green All self-tests are passing, and the unit is operational ALARM Red ON: Self-test failure detected
Flashing: Antenna failure
SEC Green ON: Encryption card detected and wireless data are secured Flashing: Encryption card detected and in RESET OFF: No encryption card present or card failed
LINK Green Communications link established between master and remote radio TX 1, 2, 3 Green Serial data received by the port and transmitted out of the radio RX 1, 2, 3 Red Radio data received and transmitting out of serial port
Safety Information
Warnings and Cautions
This document uses two kinds of hazard statements, defined as follows:
Safety Symbols
The following symbols apply to this device.
Safety Marks
The following statements apply to this device.
WARNING
Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury or equipment damage.
CAUTION
Refer to accompanying documents.
ATTENTION
Se reporter à la documentation.
Protective earth (ground) Terre de protection
Both direct and alternating current Courant continu et alternatif
Instruction manual Manuel d’instructions
Table 2 General Safety Marks
For use in Pollution Degree 2 environment. Pour l’utilisation dans un environnement de Degré de Pollution 2.
Terminal Ratings Wire Materials
Use copper conductors only.
Valeurs nominales des bornes Matériau de fil
Utiliser seulement conducteurs en cuivre. Wire Size 12–26 AWG Calibre de fil 12–26 AWG Tightening Torque
Terminal Blocks: 0.8 Nm (7 in-lb)
Couple de serrage
Building an SEL-3031 Radio System for Two PCs to
Exchange Serial Data
In this section, we provide the steps necessary for two personal computers (PCs) to exchange serial communications at 19200 bps. The installation instruction explains how to connect an antenna to the SEL-3031, establish ground and power
connections, and perform initial setup for sending messages between two computers via two SEL-3031 radios. These instructions assume that you have installed the antenna system, a grounding (earth) cable, and power cables at the radio installation locations. Figure 3 shows the major components of the SEL-3031 reference system under construction.
Figure 3 SEL-3031 Quick-Start Reference System Table 3 Other Safety Marks
WARNING
Have only qualified personnel service this equipment. If you are not qualified to service this equipment, you can injure yourself or others, or cause equipment damage.
AVERTISSEMENT
Seules des personnes qualifiées peuvent travailler sur cet appareil. Si vous n’êtes pas qualifiés pour ce travail, vous pourriez vous blesser avec d’autres personnes ou endommager l’équipement.
CAUTION
Do not connect external voltages to the contact input. Permanent damage to the product or external equipment can result from connecting external voltage to a contact input because the contact input is internally whetted.
ATTENTION
Ne pas raccorder de tensions externes sur les bornes des entrées de contact. Parce que les contacts sont trempés au mercure, des dommages permanents peuvent résulter pour le relais ou l’équipement externe à la suite du raccordement d’une tension externe à une entrée de contact du relais.
Local PC Remote PC 9-30 Vdc Power Supply Radio Configuration PC 9-30 Vdc Power Supply
Required Equipment
The following tools are necessary for configuring and testing the SEL-3031 radio system:
➤ Two SEL-3031 transceivers.
➤ Two antennas, associated cables, and lightning arrestors.
Note: Antenna selection and cables depend on your application.
➤ Two 9–30 Vdc power supplies
➤ USB Type-B cable (SEL-C664, included) and associated USB
driver (see www.selinc.com for more information). You will need to use this cable to configure the SEL-3031 via the management port.
➤ Computer with a serial terminal program to configure the
SEL-3031 transceivers.
➤ Two computers with serial terminal programs for use in this
example to exchange serial data between each other via the SEL-3031 radio system. Note that you can also use one of these computers to configure an SEL-3031.
➤ Two SEL-C245A cables (or SEL-C662 cables if your PC only
supports USB) to connect between the two computers that you will use to exchange serial data via the SEL-3031 radio system.
Antenna, Grounding, and Power
These instructions assume that you have the following:
1. An antenna system installed for each radio. The following
antennas are certified for use with the SEL-3031:
2. Appropriate cabling routed as necessary.
3. Appropriate safety devices (e.g., lightning arrestors, etc.) installed.
4. Grounding (earth) connection available at the radio installation location.
5. Power connections available at the radio installation location.
Table 4 Antennas for Use With the SEL-3031
Antenna Type Maximum Allowed Gain
Yagi antenna 14.15 dBi or less Omnidirectional antenna 9.15 dBi or less Panel antenna 10.15 dBi or less
An SEL-3031 accessory table is located at the end of this document. To purchase antennas, RF cables, lightning arrestors, power supplies, etc., please go to www.selinc.com.
SEL-3031 Installation
Step 1. Mount the SEL-3031.
Select a mounting location for the SEL-3031 that is convenient for connecting the antenna, ground, power, and serial
communications cables. Use appropriate hardware to mount the device securely at your selected location.
Device Connections
Step 2. Connect the ground (earth) cable to the device.
Step 3. Connect the antenna system cable to the antenna port labeled ANT. Note that the RF connector on the SEL-3031 is a TNC.
WARNING
Before connecting and applying power to the SEL-3031, ensure that the antenna is connected or that a 50Ω load is connected to the RF port on the SEL-3031. If you do not connect the antenna port to the antenna or to a 50Ω load, the radio antenna port will shut off, the alarm contact will pulse, and the ALARM LED will flash.
Step 4. Connect 9–30 Vdc power to the power supply connections labeled
+ (Terminal 03) and – (Terminal 04)on the SEL-3031 rear panel.
WARNING
Verify matching polarity for the power supply and SEL-3031 power connection.
Step 5. Apply power to the unit.
Setting Up the SEL-3031
Step 6. Connect a USB Type-B cable (SEL-C664) between the front
management port on one of the SEL-3031 transceivers and your computer.
Step 7. Follow the onscreen instructions, and install the USB driver if it is not installed already.
Step 8. Open a terminal program on your PC and select the COM port
titled SEL CP210x USB to UART. Confirm that communications port settings through the USB virtual port are 9600 bps, 8 data bits, 1 stop bit, and no parity.
Step 9. Press <Enter> to confirm establishment of communication between your PC and SEL-3031. The SEL-3031 will return the = prompt.
NOTE: The SEL-3031 has four Access Levels: 0, 1, 2, and CAL. At Access Level 0, no user interaction is available to the SEL-3031. The SEL-3031 reverts automatically to Access Level 0 if there are no keystrokes after a user-defined period of time.
At Access Level 1, you can view settings and monitor the status of the device.
At Access Level 2, you can monitor the status of the device and change settings.
Access Level C is for factory use and for SEL assistance with troubleshooting. Users should not access this level.
The device will display the message Invalid Access Level if you try to access commands (described later in this document) inappropriate for the access level in which you are working.
Step 10. Type ACC <Enter> to go to Access Level 1. The device will prompt you to enter the Access Level 1 password (the default password is OTTER; as the following text explains, this password can and should be changed to something only you know). The device displays the => prompt upon successful transition to Access Level 1.
At Access Level 1, you can view device health and status, but you cannot change configuration. As an example, type STA <Enter> to view the SEL-3031 status.
Step 11. At the => prompt, type 2AC <Enter> to go to Access Level 2. The device will prompt you to enter the Access Level 2 password (the default password is TAIL; as the following text explains, this password can and should be changed to something only you know). The device displays the =>> prompt upon successful transition to Access Level 2.
At Access Level 2, you can change settings and view device health and status.
NOTE: In an SEL-3031 point-to-point configuration, one radio must be set to MASTER mode and one to REMOTE mode. The default is REMOTE mode.
Step 12. Designate one of the radios in a point-to-point (P2P) configuration to be the master mode radio and change its radio mode by typing SET R MODE <Enter>. Type MASTER <Enter>. Then type END <Enter> and Y <Enter> to save your changes. If the radios were at factory-default settings, this settings change should make the LINK LED turn green on both radios.
NOTE: The maximum equivalent, or effective isotropically radiated power (EIRP), for the 900-MHz ISM band is 36 dBm, which includes 30 dBm maximum transmit power and 6 dBm antenna gain. The default power output for the SEL-3031 is 30 dBm. Based on your antenna gain, set the SEL-3031 power output to provide a reliable transmit/receive connection that does not exceed maximum EIRP regulations. For additional information, refer to the SEL-3031 manual. If you need additional assistance, contact SEL at www.selinc.com.
Step 13. Type SET R TXPWR <Enter> to change the transmitted radio power. Type in the transmitter power setting (between 20 and 30) and then type <Enter>. Type END <Enter> and Y <Enter> to save your changes. For more information on setting the transmit power, please see the Installation section in the SEL-3031 instruction manual (available at www.selinc.com).
Optional Radio Settings Changes
Remaining settings in this section are not critical for basic installations and radio operation. Use these optional settings as necessary to tailor the radio to your specific needs.
To provide a unique name to your SEL-3031, perform the following steps. Step 14. Type SET G <Enter> to enter general settings and have the
device prompt you for the following settings:
➣ Device Identifier (DID) provides a meaningful name for
the radio in this location. Type in device name (as many as 30 characters) <Enter>.
➣ Host Identifier (HID) provides a meaningful name for the
location. Type in a host name (as many as 12 characters, no spaces) <Enter>.
Upon your completion of general settings entries, type END <Enter> and then Y <Enter> to save your changes.
To change default passwords (highly recommended by SEL), perform the following steps.
Step 15. To change the Access Level 1 password, type PAS 1 <Enter>, type old password <Enter>, type new password <Enter>, retype the new password to confirm, and then press <Enter>.
You should see the response Password Changed.
To change the Access Level 2 password, type PAS 2 <Enter>, type in old password <Enter>, type in new password <Enter>, retype the new password to confirm, and then press <Enter>.
You should see the response Password Changed.
Table 5 lists useful device commands for troubleshooting and monitoring the
SEL-3031.
Table 5 Useful Device Commands
SET P n <Enter> Sets serial port configurations.
STA(tus) <Enter> Displays a status page of the radio configuration.
Serial Port Connections
NOTE: You can use a USB-to-serial cable (SEL-C662) instead of an SEL-C245A cable if your PC has no serial port. If you use an SEL-C662 cable, then set the DTE/DCE switch to DTE for this process.
Step 16. Connect the EIA-232 cable (SEL-C245A) to the PC1 serial port
(COM1) and Radio 1 Serial Port 1.
Step 17. Connect the EIA-232 cable (SEL-C245A) to the PC2 serial port
(COM1) and Radio 2 Serial Port 1.
Step 18. Use connection settings of 19200 bps, 8 data bits, 1 stop bit, no parity, and local echo off to establish terminal sessions on both PCs to COM1.
Testing the Final System
Step 19. The characters you type in the terminal session on PC1 will
display in the terminal session on PC2 and vice-versa. If you encounter difficulties, refer to Table 6.
Performance Monitoring, Testing, and
Troubleshooting
This section provides information on monitoring radio performance, testing, and troubleshooting. The extensive self-tests with which the SEL-3031 is equipped have eliminated or greatly reduced traditional periodic test procedures.
See the SEL-3031 manual (available at www.selinc.com) for more information on how to monitor and improve radio performance.
Table 6 Troubleshooting(Sheet 1 of 2)
Symptom Probable Cause Corrective Action
ALARM LED is ON Radio recognized a sta-tus failure.
Turn unit off, and then on, and issue the STATUS command. If alarm sig-nal returns, return unit to the factory for repair.
ALARM LED flashes ON every half sec-ond.
Radio detected a VSWR error where there is an open or short on the antenna port.
Verify that all connections from the antenna to the radio are secure. Verify that the antenna, feedlines, or light-ning arrestor are not damaged.
Firmware Upgrade Instructions
SEL may occasionally offer firmware upgrades to improve the performance of your radio. The radio stores firmware in Flash memory, so changing physical components is not necessary. Step-by-step installation instructions are provided with all SEL firmware updates. Please refer to these instructions for upgrading
The SEC LED is flashing.
The SEL-3031 prop-erly detects the encryp-tion card, but the card is in reset and does not have the key set.
Use ACSELERATOR QuickSet® SEL-5030 Software and set the KEY setting. This setting must be the same on both radios. You can find this soft-ware at www.selinc.com.
Cannot connect to the radio through the USB port.
USB driver not installed properly.
Check for active SEL-to-USB drivers from your PC in the Ports section of the Device Manager. If that does not work, uninstall and reinstall the driver and restart your PC. Make sure the SEL-3031 is on before you plug in the USB cable.
Cannot change radio settings.
Invalid password. Install the password disable jumper and change passwords using the PAS command. See the Installation section in the SEL-3031 manual for informa-tion on how to disable passwords. Wall-mount radio
will not turn on.
The polarity of the power supply wires is reversed.
Check the correct polarity and reverse if incorrect.
The remote radio will not link up to the master.
Radio address or mode is set incorrectly.
The master and remote radios must be set to the same address and have the same SKIP settings. Check that the master radio LINK light is ON and that the NID address and SKIP setting are set correctly on both units.
Antennas are not aimed correctly, or there is a bad antenna cable.
Use ACSELERATOR QuickSet on the radio to issue the RAD command to check for signal strength. If the signal is low, try to re-aim both antennas to gain signal strength and check for bad antenna cables. Refer to the Installa-tion secInstalla-tion in the SEL-3031 manual for more information on proper radio installation.
Table 6 Troubleshooting(Sheet 2 of 2)
Accessories for the SEL-3031
Table 7 Radio Antenna and Cable AccessoriesDescription SEL Part Number
Feedline
RG-8X TNC Male to N Male Cable SEL-C964
RG-8X TNC Male to TNC Male Cable SEL-C965
LMR®-400 TNC Male to N Male Cable SEL-C966
LMR-400 TNC Male to TNC Male Cable SEL-C961
LMR-400 N Male to N Male Cable SEL-C968
7/8" HELIAX® N Male to N Male Cable SEL-C978
N Female to TNC Male Adapter 240-1809
Antenna
3-Element 8.5 dBi Gain Yagi, N Female Connector 235-0221 5-Element 11.1 dBi Gain Yagi, N Female Connector 235-0220 11-Element 14.15 dBi Gain Yagi, N Female Connector 235-0222 10 dBi Gain Panel, N Female Connector 235-0240 Vertical 2.15 dBi Gain Omnidirectional, N Female Connector 235-0231 Vertical 7.15 dBi Gain Omnidirectional, N Female Connector 235-0232 Vertical 9.15 dBi Gain Omnidirectional, N Female Connector 235-0233 Indoor 8" Vertical, TNC Male Connector 235-0108
Surge Protection
© 2012–2016 by Schweitzer Engineering Laboratories, Inc. All rights reserved.
All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. No SEL trademarks may be used without written per-mission. SEL products appearing in this document may be cov-ered by U.S. and Foreign patents.
Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copy-right and patent laws in its products, including without limita-tion software, firmware, and documentalimita-tion.
The information in this document is provided for informational use only and is subject to change without notice. Schweitzer Engineering Laboratories, Inc. has approved only the English language document.
2350 NE Hopkins Court • Pullman, WA 99163-5603 U.S.A. Tel: +1.509.332.1890 • Fax: +1.509.332.7990 www.selinc.com • [email protected] Figure 4 Radio Antenna Connections
Product Diagrams
Figure 5 SEL-3031 Dimensions LMR-400 N Male to
N Male Cable (SEL-C968)
Radio Surge Protector With N Female Connectors (200-2004)
RG-8X TNC Male to N Male Cable (SEL-C964) or
LMR-400 TNC Male to N Male Cable (SEL-C966)
3-Element 8.5 dBi Gain Yagi, N Female Connector (235-0221) or
5-Element 11.1 dBi Gain Yagi, N Female Connector (235-0220)
SEL-3031
RACK-MOUNT CHASSIS WALL-MOUNT CHASSIS
9.15 (232.4) 18.31 (465.1) FRONT 19.00 (482.6) 1.72 (43.7) TOP (162.6)6.40 TOP 6.30 (160) (76.2)3.00(145.5)5.73 LEGEND in (mm) SIDE 0.21 (5.3) 8.66 (219.7) FRONT SIDE 0.05 (1.27) 1.73 (43.9)
