User's Manual

SiteWERX User Manual WirelessWERX
SiteWERX 1June09 7
2.2.5 Power Supply
The SBS module operates from an external AC/DC power supply to provide a
regulated DC voltage of 3.3 VDC at 2.18 Amps, and consumes a maximum of 7.2
Watts.
2.2.6 Power-On Indicator
The SBS has a GREEN LED indicator that is illuminated when power is enabled.
2.2.7 Development/Programming Interface
The SBS has a four-wire serial peripheral interface (SPI). The SPI is used for real-
time debugging / development, and is connected to a PC parallel or USB port via
connector and cable assembly made by WirelessWERX.
The development / programming interface is designed to permit the following
connections:
PC connect to LAN module only
PC connect to Bluetooth module only
Bluetooth module to LAN module, No connection to PC
2.3 Construction and Packaging
The SBS modules, and related circuit elements are assembled on a single PCB. The
PCB shall be enclosed in a Bud Industries Plastibox, PT-11754, with the following
(nominal) dimensions:
Length 4 inches
Width 5.5 inches
Height 1.5 inches
The SBS Bluetooth module RF output is brought to the edge of the PCB and
terminated in bulkhead type, SMA connector that penetrates the enclosure and
permits the connect/disconnect of the SBS antenna external to the enclosure.
The SBS Wi-Fi module RF output is brought to the back panel of the enclosure with
50 ohm coax cable terminated in an SMA connector that penetrates the enclosure
and permits the connect/disconnect of the SBS antenna external to the enclosure.