SkyWave IDP-680, Руководство по оборудованию

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IDP 600 Terminal Series - Hardware Guide
© SkyWave Proprietary 11 T200, Version 02
3.2.2 Power Consumption
Typical power consumption values at Vbatt=12 V and at room temperature (22°C)
Table 4 Power Consumption Values
Mode of Operation Current
Transmit 0.75 A
Receive 45 mA
Sleep 100 µA
Processing 10 mA
3.2.2.1 Average Power Consumption
Average terminal power consumption depends on many factors including how often the
modem wakes to receive to-mobile messages, how often GPS fixes are requested, and
how often from-mobile messages are sent. Table 5 characterizes several scenarios and
shows the estimated average power consumption assuming a 12 V power source.
Table 5 Power Consumption Scenarios
Scenario Fixed 1 Fixed 2 Mobile 1 Mobile 2 Mobile 3
Wake to Receive
Period 30 min 3 min 60 min 30 min 10 min
Tx/Day and
Message Size/Tx
48X,
98 bytes 96X,
98 bytes 1X,
98 bytes 2X,
98 bytes 2X, 98
bytes
GPS Fix/Day
1
(network) 1
(network) 24 4
(network) 4
(network)
Power Mode Fixed -
battery Fixed -
battery Mobile -
powered Mobile -
battery Mobile -
battery
Average Power
Consumption
(mAh/day at 12 V) 24 111 16 11 25
Serial (terminal
only) On Rx
Wake Up On Rx
Wake Up On Rx Wake
Up None None
Notes - - 10 seconds of
application card
geofence
processing per
fix (assumed)
(terminal only) - -
3.2.3 Load Dump Circuitry
The terminal's operating range is 9-32 V. Above this range; the load dump protection
circuitry opens an electronic switch so that the terminal is not damaged, up to 150V.
When the voltage drops below the threshold, the terminal recovers, going through power
on reset.
With this protection, the terminal is capable of withstanding load dumps as specified in
SAE J1455 (rev JUN2006) paragraph 4.13.2.2.1.