16
Tetra (VL-EPC-2700) Reference Manual
System Features
Power Supply
Power Connectors
Main power is applied to the Tetra through a 4-pin connector (J15), with mating connector
VersaLogic VL-PS12-24 (12V). See the table below for connector pinout.
CAUTION:
To prevent severe and possibly irreparable damage to the system, it is critical that the
power connectors are wired correctly. The power connector is not fuse or diode
protected. Proper polarity must be followed otherwise damage will occur.
Table 4. J15 Main Power Connector Pinout
Pin
Signal
Description
1
V_MAIN (first pin)
Center Pin Voltage
1
V_MAIN (second pin)
Center Pin Voltage
2
Ground
Ground
3
Plug Detection
Ground when no plug,
open otherwise.
Power Requirements
Model
Idle
Typical
Max.
VL-EPC-2700-EDK-02A
3.0W
4.2W
6.9W
VL-EPC-2700-EDK-02B
3.1W
4.5W
8.5W
VL-EPC-2700-EDK-EVAL
3.1W
4.5W
8.5W
Note:
The VL-EPC-2700 does not come with an on-board RTC backup battery. The VL-CKR-
TETRA Cable kit includes a User Interface breakout cable (VL-CBR-3407) that connects to the
J13 connector. It is an open ended-cable that can connect a backup battery on pins 29 (V_BATT)
and pin 30 (Return_Battery/Ground). A connector and/or external battery is then hardwired.
CPU
The Tetra uses a low power Arm i.MX6 quad-core processor featuring:
i.MX 6Quad (quad Arm Cortex-A9 core) -
Specifications
System RAM
The Tetra ships with soldered-on DDR3L RAM. 2GB of RAM is on standard products, but custom
options allow memory capacities down to 1GB or up to 4GB.
3
