Gtech GWT154, Руководство пользователя

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No
. 96-1886-01E
Rev
.
1.1
GTECH Aircon Radio (Model GWT154)
PAGE
5
OF
72
2.0 KEY FEATURES

802.15.4-2006 compliant transceiver operating in the unlicensed Industrial, Scientific, and
Medical (ISM) frequency band of 2.400 – 2.4835 GHz.

Lost Link Prevention – The GWT154 provides a failsafe timeout in the event the GTECH
Terminal doesn’t receive a response from the peripheral.

The GTW 15.4 provides security:
o
Uses AES 128 bit authentication and packet encryption
o
Uses EUI-64 (MAC address) filtering to keep rogue devices off the network
o
Uses the GTECH Terminal for initialization and authorization of End Device
peripherals. This allows GTECH the ability to integrate the local security measures with
field service installations.
o
Uses a peripheral addressable firewall to exclude single or multiple peripherals from
accessing the GTECH 485 Bus

The GWT154 supports the GTECH 485 Packet Protocol over the following data interfaces:
o
GTECH RS-485 (Half duplex 4-wire, DB-9)

Two pairs of uni-directional lines.

The terminal always transmits on Tx± and receives on Rx±.

Female 9-pin DSUB receptacle.

Reset-on-Break support in accordance with [3] .
o
USB 2.0 Type B Mini
o
Internal 3.3V UART

The following form factors are supported.
o
Pinned module – For new embedded designs or as an OEM module replacement

1.0” (W) x 1.33” (L) (UART two 1x10 headers)
o
Dongle – For existing or legacy GTECH online terminals or RS-485 peripherals

2.1” (W) x 2.6” (L) (RS-485 DB9F or USB 2.0 Type mini B interface)

The transceiver will be used only indoors.

RF power will be software selectable at 10mW (10dBm) or 63mW (18dBm) during operation
with a 1dB resolution.

An internal chip antenna is on the circuit board along with a software switchable RF connector
for an optional external antenna connection.

The transceiver derives its power from the following options.
o
Specific interface ports in the dongle configuration.

RS-485: +12V and/or +5V, 300 mA available.

USB: +5V BUS supply
o
PCB pins in the OEM replacement module configuration.
o
DC power connector – A wall mount power transformer with integral 6 foot cord.

Storage Environment
o
Temperature: -40 to +80°C.
o
Rate of change: 20°C per minute
o
Humidity: 10 to 90%, noncondensing.

Operating Environment
o Temperature: -40 to +80°C.
o
Rate of change: 10°C per minute
o
Humidity: 10 to 90%, noncondensing.

Radiated and conducted limits meet FCC part 15 and Industry Canada ICES-003 emission