AWK-3121B Series QuickInstallation Guide Version 1.4, SEP 2022 Technical Support Contact Information www.moxa.com/support 2022 Moxa Inc. All rights reserved.
Overview The AWK-3121B wireless AP/client is the ideal rugged wireless solution for railway onboard/wayside and train-to-ground applications such as CCTV and CBTC communications. It can provide speeds of up to 300 Mbps with IEEE 802.11n technology. The AWK-3121B's can operate at temperatures ranging from -40 to 75°C and meet the requirements of the EN 50155/50121 regulations.
Step 3: Set up the computer’s IP address Set an IP address for the computer so that it is on the same subnet as that of the AWK-3121B. Since the AWK-3121B’s default IP address is 192.168.127.253, and the subnet mask is 255.255.255.0, set the IP address of the computer in the 192.168.127.xxx IP range and subnet mask to 255.255.255.0. Step 4: Use the web-based manager to configure the AWK-3121B Open your computer’s web browser and type http://192.168.127.
Panel Layout of the AWK-3121B 1. 1A N-type antenna port 2. 1B N-type antenna port 3. Model name 4. LEDs 5. 4-pin male M12 A-coded connector for PWR-1 and PWR-2 6. 10/100/1000BaseT(X) 8-pin M12 X-coded female connector for LAN1 7. Grounding screw 8. RJ45 RS-232 console 9.
M4 screws specification for Wall Mounting Kit: STEP 2: Mounting the AWK-3121B to a wall requires 4 screws. Use the AWK-3121B device, with wall-mounting plates attached, as a guide to mark the correct locations of the 4 screws. The heads of the screws should be 6.0 mm in diameter, and the shafts should be less than 3.5 mm in diameter, as shown in the figure at the right.
M4 screws specification for DIN-Rail Mounting Kit: STEP 2: Insert the top of the DIN rail into the slot just below the stiff metal spring. STEP 3: The DIN-rail attachment unit will snap into place as shown in the figure below: To remove the AWK-3121B from the DIN rail, simply reverse Steps 2 and 3.
Wiring Requirements WARNING Safety First! Be sure to disconnect the power cord before installing and/or wiring your AWK-3121B. WARNING Safety First! Calculate the maximum possible current in each power wire and common wire. Observe all electrical codes that dictate the maximum current allowed for each wire size. If the current goes above the maximum ratings, the wiring could overheat, causing serious damage to your equipment.
Grounding the Moxa AWK-3121B Grounding and wire routing help limit the effects of noise due to electromagnetic interference (EMI). Run the ground connection from the ground screw to the grounding surface prior to connecting devices. ATTENTION This product is intended to be mounted to a well-grounded mounting surface, such as a metal panel. Connecting the Power Supplies The AWK-3121B supports two types of power supplies— PWR1 and PWR2.
RS-232 Console Connection The AWK-3121B has one RS-232 (8-pin RJ45) console port on the front panel. Use either an RJ45-to-DB9 or RJ45-to-DB25 cable to connect the AWK-3121B console port to your PC’s COM port. You may then use a console terminal program to access the AWK-3121B for console configuration. Console Pinouts for 10-pin or 8-pin RJ45 10-Pin Description 8-Pin LED Indicators The front panel of theAWK-3121B contains several LED indicators.
Specifications WLAN Interface Standards IEEE IEEE IEEE IEEE IEEE Spread Spectrum and • Modulation (typical) • • • Operating Channels (central frequency) • • • Security • • • Transmission Rates • • 802.11b/g for Wireless LAN 802.11i for Wireless Security 802.3 for 10BaseT 802.3u for 100BaseT(X) 802.3ab for 1000BaseT DSSS with DBPSK, DQPSK, CCK OFDM with BPSK, QPSK, 16QAM, 64QAM 802.11b: CCK @ 11/5.5 Mbps, DQPSK @ 2 Mbps, DBPSK @ 1 Mbps 802.
Transmitter Power 802.11b: • Typ. 26±1.5 dBm @ 1 Mbps • Typ. 26±1.5 dBm @ 2 Mbps • Typ. 26±1.5 dBm @ 5.5 Mbps • Typ. 25±1.5 dBm @ 11 Mbps 802.11g: • Typ. 23±1.5 dBm @ 6 to 24 Mbps • Typ. 21±1.5 dBm @ 36 Mbps • Typ. 19±1.5 dBm @ 48 Mbps • Typ. 18±1.5 dBm @ 54 Mbps Receiver Sensitivity 802.11b: • -93 • -93 • -93 • -88 802.11g: • -88 • -86 • -85 • -85 • -85 • -82 • -78 • -74 dBm dBm dBm dBm @ @ @ @ 1 Mbps 2 Mbps 5.
Professional installation This is a specific product that requires professional installation and configuration, must be performed by trained technical engineers to install the antenna, please contact Moxa for further information. The availability of some specific channels and / or operational frequency bands are country dependent and are firmware programmed at factory to match the intended destination. The firmware setting is not accessible by the end user.
Installation Wall mounting (optional), DIN-rail mounting (optional) Environmental Limits Operating -40 to 75°C (-40 to 167°F) Temperature Storage Temperature -40 to 85°C (-40 to 185°F) Ambient Relative 5% to 95% (non-condensing) Humidity Power Requirements Input Voltage 24VDC, dual DC power input Input Current 0.789 A (max.
ATTENTION Use the antennas correctly: The 2.4 GHz antennas are needed when the AWK-3121B operates in IEEE 802.11b/g. Make sure your antenna installation is within a safe area, which is covered by a lightning protection or surge arrest system.
