Fox3-Kmd Application Interface; Power Supply; Automatic Shutdown; Determining The External Equipment Type - FALCOM FOX3-KMD Hardware Manual

FOX3-KMD H M
ARDWARE

5. FOX3-KMD APPLICATION INTERFACE

5.1. Power supply

The power supply for the FOX3-KMD devices has to be a single voltage source of V
operating voltage (V ) has to be applied permanently to the FOX3-KMD devices and able to provide sufficient
+IN
current of up to 1.5 A (pulse).
The operating voltage (V
protected against continuous overvoltage.
NOTE: Operating voltage range must never be exceeded; care must be taken in order to fulfill min/max
voltage requirements.
Signal name I/O
+IN I
GND -
5.1.1.

Automatic shutdown

Automatic shutdown takes effect if:
 under voltage is detected and internal battery level runs below the nominal voltage.

5.2. Determining the External Equipment Type

Before you connect the serial port pins of the FOX3-KMD devices to an external equipment, you need to
determine if the external hardware serial ports are configured as DTE (Data Terminal Equipment) or DCE (Data
Communications Equipment).
FOX3-KMD is designed for use as DCE devices. Based on the conventions for DCE-DTE connections, it
communicates with the customer application (DTE) using the following signals:
FOX3-KMD Terminal (DCE)
RxA
TxA
GND
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ANUAL
and GND) is not protected against voltage spikes and reverse polarity, but NOT
+IN
Parameter
+10.8 V...+32.0 VDC.
0 V
to
<----------
---------->
-
Table 3: The signaling definitions between DTE and DCE.
Description
Positive operating voltage.
Ground (should be isolated from the vehicle grounds)
Application (DTE)
TXD
RXD
GND
V 1.0.1
ERSION
= +10.8 V...+32.0 V DC. The
+IN
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