Revised 2016-02-12
Hardware Installation
Antennas and Wireless
2-24
Sixnet
®
SeriesRAM
®
9000
Hardware Guide
GPS Antenna
The GPS chipset used in this device supports a 50 ohm active GPS antenna and is capable of GPS and Glonass
signal reception. Ascertain that the GPS antenna cabling uses an SMA-M type connector. For optimal results, the
GPS antenna should be located so that is has clear and unobstructed access to the sky.
Installation and Verification
When installing the antenna, observe the
FCC and Industry Canada guidelines
and keep the following in mind:
•
Mount the antenna(s) at least 30 cm (12 inches) from other antennas
•
Do not install the antenna in a closed metallic enclosure (such as a cabinet or the trunk of a car).
Once an RTU has a signal, the RSSI LED bar will illuminate in stages according to the signal strength. Additionally,
the Web Interface can display the received signal strength (RSSI) on the status page. The unit should have at the
very least one bar of signal strength.
Wi-Fi Antenna
The Wi-Fi cabling and antenna must meet the following requirements:
•
50 ohm impedance
•
RP-SMA (Male) connector
•
Antenna designed for Wireless LAN or Wi-Fi
•
Recommended antenna frequency rating: 2.4 GHz
•
Recommended antenna bandwidth rating: 1.0 GHz
The Wi-Fi performance specifications of the RAM-9000 are shown in the table below:
Radio
Output Power @ 25°C
(±2dB)
IEEE 802.11b
11 Mbps: 23 dBm
IEEE 802.11g
6 Mbps: 23 dBm
54 Mbps: 21 dBm
IEEE 802.11n
MCS0: 23 dBm @ HT20 / HT40
MCS7: 21 dBm @ HT20 / HT40
Sensitivity
IEEE 802.11b
11 Mbps: -90 dBm
IEEE 802.11g
6 Mbps: -92 dBm
54 Mbps: -75 dBm
IEEE 802.11n
2.4 GHz MCS0: -90 dBm (HT20)
MCS7: -72 dBm (HT20) MCS0: -
88 dBm (HT40) MCS7: -68 dBm
(HT40)
Operating Frequency
IEEE 802.11b/g/n 20 MHz ISM Band
•
USA (FCC): 2.412 GHz ~ 2.462 GHz (CH1 ~ CH11)
•
CD/CHINA: 2.412 ~ 2.472 GHz (CH1 ~ CH14)*
IEEE 802.11g/n 40 MHz Band
•
USA (FCC): 2.422 GHz ~ 2.452 GHz (CH3 ~ CH9)
•
CE/CHINA: 2.422 ~ 2.462 GHz (CH2 ~ CH11)
Modulation
IEEE 802.11b (DSSS): CCK, DQPSK, DBPSK
IEEE 802.11g/n (OFDM/DSSS): QAM-64, QAM-16, QPSK, BPSK
*Geographic support for WiFi Channels : AM/AT and VZ = CH 1-11; EU = CH 1-13; JP = CH 1-14
