Page 9
Door Access Terminal Combo Technical Manual
2
Power 12V DC
9
Not Used
3
Door Lock / Tamper sensor / Push-button
10
Extension Relay Module (I
2
C bus)
4
Not Used
11
User interface
5
Not Used
12
Serial RS-232
6
Not Used
13
Metra NET Network
7
BDM Loader
14
Metra NET Network
Power supply connection
Regulated DC power supply is required for proper operation. See chapter
“Technical data”
for power
requirements.
Connect 12V DC regulated power supply to designated
terminals on the Control Module’s integrated Network
Splitter. The terminals are marked as
+12V
for positive
connection and
GND
for ground connection.
WARNING
Mind the polarity! Wrong polarity could result in
irreparable damage to the device.
Respect power requirements data! Using unsuitable
power supply could result in damage to the power
supply and to the device.
Metra NET Network connection
The Metra NET Network connection provides for operational functionality of the Door Access
Terminal Combo.
Different devices in parallel can be connected to the Metra Network Controller by a single unshielded
twisted pair (UTP) cable. Total length of the twisted pair cable is limited to 1 km. One Network Line
Terminator must be connected at the far end of the network cable. See also
“Metra NET Network –
Installation Manual”
for different wiring schemes.
Connect the UTP Metra NET network cable to one of the
designated terminals on the Control Module’s integrated
Network Splitter. The terminals are marked “
RJ45
“
.
NOTE
Do not confuse Metra NET Network connection with
computer LAN network.
