MDS 05-6632A01, Rev. F
MDS Orbit MCR/ECR Technical Manual
93
wifi-status station-status rxpackets 564
wifi-status station-status txbitrate 54
wifi-status station-status txbytes 897
wifi-status station-status txpackets 9
wifi-status station-status txfailed 0
wifi-status station-status txretries 0
> show interfaces-state interface
Wi-Fi
statistics
statistics discontinuity-time 2013-09-24T13:12:25-04:00
statistics in-octets 288
statistics in-unicast-pkts 2
statistics in-multicast-pkts 0
statistics in-discards 0
statistics in-errors 0
statistics out-octets 752
statistics out-unicast-pkts 7
statistics out-discards 0
statistics out-errors 0
Unlicensed 900 MHz ISM (NX915)
3.5.4
Understanding
The 900 MHz ISM Module (NX915) interface provides operation in the 900 MHz unlicensed ISM band.
The module provides long-distance communications with data rates ranging from 125 kbps to 1.25 Mbps,
suitable to interface both Ethernet and Serial controllers such as PLCs, RTUs and SCADA systems. The
module utilizes a combination of FHSS (Frequency Hopping Spread Spectrum), DTS (Digital
Transmission System) and hybrid FHSS/DTS technologies to provide dependable wireless
communications.
The GE MDS NX915 NIC module is a point-to-multipoint, medium speed, long range (>20 miles),
spread-spectrum, wireless data transmission product. It operates as a Frequency-Hopping Spread
Spectrum (FHSS) or a Digital Transmission System (DTS) in the 902 to 928 MHz license-free ISM band.
The NIC can operate as an Access Point, a Remote, or a Store and Forward (SAF) device. It will operate
as an intentional radiator in accordance with FCC Rule Part 15.247 under full modular rules per DA 00-
1407.
The specifications for the 900 MHz NX915 NIC module:
Frequency Range: 902 to 928 MHz
Power Output: 20 dBm to 30 dBm in 1.0 dBm steps (DEFAULT = 30 dBm)
Output Impedance: 50 Ohms
Permissible Antennas: See Table 3-10 below
Antenna Connector: TNC female
Number of Frequency Channels: Selectable 50 to 81 for FHSS, 1 to 20 for DTS
Channel Separation: 307.5 kHz minimum
Modulation Type: 2-Level GFSK / 4-Level GFSK
Data Rates: 125, 250, 500, 1000, 1000W, 1250 kbps
Peak Frequency Deviation: 1250 kbps / 4-level GFSK: 550 kHz
Beacon Interval: 10 to 300 ms (DEFAULT is 150)
Dwell Time: 10 to 400 ms (DEFAULT is 50)
Содержание MDS ORBIT ECR
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