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Chapter 2
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G
ENERAL
D
ESCRIPTION
2.1. Physical Interfaces
2.1.1. Serial Data Interface
The serial asynchronous interface allows connection to external serial devices. It is shared
between user data and unit’s command/status information. All commonly supported baud rates,
parity and bit configurations are available up to 115.2 kbps.
2.1.2. Power Interface
The power interface allows connection to an unregulated DC power source. The DC power source
(third-party or user supplied) must provide DC power of 4.2V±5% DC.
The standalone unit’s RF interface is a 50-ohm impedance matched standard MMCX connector as
required by regulation.
2.1.3. Power Consumption
Power consumption of the UHF radio modem at continuous transmission mode with 1W output
power level is less than 4500mW (refer to Table 2-1 for details).
Table 2-1. Power Consumption
Operating Mode / Description Consumption
Maximum for continuous transmission with 1W output power level
1
< 4500 mW
Maximum for Rx Full Operation Mode < 2000 mW
Average for Operation Mode with 30% Transmission duty cycle < 2000 mW
Average for Operation Mode with 50% Transmission duty cycle < 3000 mW
Sleep Mode 300 mW
Standby Mode, ordered by SLEEP input pin 500
µ
W