4116298
Rev 7.0
November 07, 2016
19
Product Technical Specification and
User Guide
Interfaces/Peripherals
2.2.1.1.
Power Supply
The GL8200 is supplied by an external DC voltage (VIN-VBUS) that ranges from 4.75V to 32V at
2.2A. This input is available on the modem from the 8-pin Micro-Fit connector.
Table 7.
Input Power Supply Voltage
Pin Number
Signal
Description
6
GND
Ground connection
7
VIN-VBUS
4.75V to 32V DC input
Note that the correct operation of the GL8200 in communication mode is not guaranteed if input
voltage (VIN-VBUS) falls below 4.75V.
The following table describes the consequences of having the GL8200 go either over or under the
specified voltage range.
Table 8.
Effects of Power Supply Overload/Underload
If the voltage
Then
Falls below 4.75V
Wireless communication is not guaranteed.
Is over 32V (transient peaks)
External protection should be implemented on the GL8200.
Is over 32V (continuous over voltage)
External protection should be implemented on the GL8200.
Note:
The minimum input voltage specified here is the GL8200 input. Be mindful of the input voltage
decrease caused by the power cable. When using the cable that comes with the GL8200, this input
drop is at around 800mV at 4.75V and 220mV at 32V.
The power supply must withstand a current peak of 2.8A in 4.75V input voltage. Refer to Table 21
Power Consumption (Typical Values) for more current information.
2.2.1.2.
Serial Link (RS232)
The
modem’s serial link, RS232, performs the voltage level adaptation (V24/CMOS) between the
GL8200 (DCE) and external applications (DTE).
The RS232 interface is internally protected against electrostatic surges on its lines by ESD protection.
The RS232 interface has the following filtering guarantees:
EMI/RFI protection on both the input and the output
Signal smoothing
Signals available on the RS232 serial link are as follows:
TX data (RS232-TXD)
RX data (RS232-RXD)
Request To Send (RS232-RTS)
Clear To Send (RS232-CTS)
Data Terminal Ready (RS232-DTR)
Содержание AirLink GL8200
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