
IDP 800 Terminal Series - Hardware Guide
T209, Version 01 12 © SkyWave Proprietary
3.2.2 Power Consumption
Table 5 shows the typical power consumption values at room temperature (22°C) for a
normal operating terminal.
In order to calculate a terminal's total power, add the current consumption in the
terminal's mode of operation, the modem's mode of operation and the sum of all
peripheral current consumptions.
One of the peripherals is RS-232. It is important to note that if the RS-232 is connected,
the RS-232 default configuration is for the terminal to remain in Processing mode and
never enter Power Save mode. Consequently, it is very important not to connect the RS-
232 for power sensitive applications or to manage the RS-232 settings appropriately.
Refer to [T202] for details.
Power consumption for the charger is defined in section 3.8.4. The charger can operate in
any terminal mode including Power Off.
Table 5
Operational Power Consumption Values
Terminal Mode of Operation
Current
Processing
10 mA
Power Save
115 µA
Modem Mode of Operation
Current
Transmit
1.1 A
Receive
38 mA
Sleep
95 µA
Idle
38 mA
Peripheral
Current
RS-232
By default if RS-232 is connected,
Power Save is not used. Minimum
power corresponds with Processing
mode.
LED
50 mA
Input/Output
Refer to Section 3.2.10.1
Accelerometer
Current
Full operation
139 µA
Low power mode
7 µA
Shutdown
0.5 µA
The IDP-800 can be operating in a Power Off mode. In Power Off the terminal, modem
and all peripherals are turned off. If the terminal is in Power Off mode, then all
peripherals are off and the current draw is zero (0).
Table 6
Power Off Values
Power Off
Current
Power Off
11.6 µA (battery power)
17 µA (external power)