IDP-782 - Hardware Guide
3.5.5 USB
The terminal incorporates a USB to 4 port UART bridge chip. Both RS-232 serial ports can be switched
through the bridge to the USB port. The USB port is accessible via a Mini-B connector on the rear of the
terminal. The USB port is full-speed V2.0 (12 Mbps) compliant.
By default both primary and auxiliary serial ports are automatically switched to the USB port on connection
of a USB host. The application card processor however can redirect the serial ports independently to
whichever destination it is programmed.
The electrical characteristics of the interface are:
Parameter
Min.
Typical
Max.
Units
Input High Voltage
2.0
-
5.5
V
Input Low Voltage
-0.3
-
0.8
V
Output High Voltage
2.8
-
3.6
V
Output Low Voltage
0
-
0.3
V
ESD Protection
Human Body Model
-
±5
-
kV
3.6 RF Specifications
3.6.1 Standard Antenna
Parameter
Value
Maximum EIRP
7 dBW
Elevation Angle
20° to 90° degrees
Maximum transmit antenna gain
4.5 dBic
3.6.2 Low Elevation Antenna
Parameter
Value
Maximum EIRP
5 dBW
Elevation Angle
-15° to 90° degrees
Maximum transmit antenna gain
2.5 dBic
3.7 GPS/GLONASS
The manufacturer's specifications are given in the table below. Refer to APPENDIX A for hardware part
numbers.
T213, Version 02
37
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