AVL-50 4G User Manual
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TTW-AVL504G-UM002
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Table 3.
Description of 6 PIN Connections
Index Description
Comment
1
RXD
UART RXD; TTL
2
TXD
UART TXD; TTL
3
VIN
External DC power input, 8-32V
4
IGN
Ignition input, positive trigger
5
OUT1/IN1
Digital output/input; Open drain,150mA max
6
OUT2
Open drain, 150mA max
7
GND
GND
AVL50 4G has two status LEDs; CELL LED (Green color) and GPS LED (Red color)
Table 4.
AVL50 4G LED Description
CELL
Device is searching for CELL network.
Fast flashing
SIM card needs PIN code to be unlocked.
ON
Device has registered to CELL network.
Slow flashing
GPS
GPS is asleep.
OFF
GPS is fixed.
ON
Device is searching for GPS.
Fast flashing
Note:
1. Fast flashing intervals are about 500ms ON/1sec OFF.
2. Slow flashing intervals are about 500ms ON/15sec OFF.
VIN (PIN3)/GND (PIN7) are the power input pins. The input voltage range for this device is from 8V to
32V. The device is designed to be installed in vehicles that operate on 12V/24V systems without the
need for external transformers.
Figure 3.
Typical Power Connection
2.3.
AVL50 4G LED Description
2.4.
Power Connection
