SAIC RTR-4, Руководство оператора, Страница: 26 / 116

System Description, Setup, and Quick Start RTR-4 Operator’s Manual
3-10 SAIC Proprietary 120300 Rev. D
RTR-4 Standard Wireless Configuration
Wireless Option
The RTR-4 Wireless Option is an alternative to connecting the
controller, X-Ray imager, and XR200 X-ray source with cables.
Wireless operation simplifies system setup and use by
eliminating the signal cables and provides greater controller to
target distances. The Wireless systems adhere to the frequencies
and protocols of the WiFi, IEEE-802.11b standard.
Radio-frequency energy between the imager and the controller
combined with the radio-frequency energy to the X-ray receiver is
at a very low intensity. When the Integrated Imager is more than
50cm (1.5ft) away from a target device, the RTR-4 Wireless
operation complies with the Hazards of Electromagnetic
Radiation to Ordnance (HERO) specifications. This consideration
is only relevant if the RTR-4 is being used with potentially
explosive devices.
The data transmission frequency of the Imager radio module and
the controller is between 2.4000 and 2.4835GHz, and is
spread-spectrum and frequency-hopping, according to the
IEEE-802.11b-1999 standard, and is further encrypted to
minimize snooping or spoofing. The frequency used when
transmitting to the X-ray source receiver is about 418MHz for US
usage and about 433MHz for European usage, which is very low
power. The frequency is coded with a sequencing 64-bit security
code to minimize the possibility of unintended source firing.
The wireless option adds the following components to the RTR-4
standard configuration:
• WiFi NIC.
• Imager transceiver.
SOURCE CONNECTOR
ANT 1
ANT 2
SOURCE RECEIVER
SOURCE
WiFi NIC
IMAGER TRANSCEIVER
ANT
OPTION