5 Years Warranty
Each of Korenix’s product is designed, produced, and tested with high industrial standard.
Korenix warrants that the product(s) shall be free from defects in materials and
workmanship for a period of ve (5) years from the date of delivery provided that the
product was properly installed and used.
is warranty is voided if defects, malfunctions or failures of the warranted product are
caused by damage resulting from force measure (such as oods, re, etc.), other external
forces such as power disturbances, over spec power input, or incorrect cabling; or the
warranted product is misused, abused, or operated, altered and repaired in an unauthorized
or improper way.
Attention! To avoid system damage caused by sparks, please DO NOT plug in power
connector when power is on.
e product is in compliance with Directive 2002/95/EC and 2011/65/EU of the European
Parliament and of the Council of 27 January 2003 on the restriction of the use of certain
hazardous substances in electrical and electronics equipment (RoHS Directives & RoHS
2.0)
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JetNet 3808G-M12/3908G-M12 Railway/Vehicle Ethernet Switch
Quick Installation Guide V1.0
e JetNet 3808G-M12/3908G-M12 series are Unmanaged Ethernet Switch with wall mount
connection for Railway/Vehicle communication. It adopts M12 connector to make well
connection with Enclosure interface for In-Train/Vehicle application, including Power and
Ethernet interfaces. is Quick Installation Guide will guide you on system installation and
wiring the interfaces.
Package Check List
M12 Switch
Quick Installation Guide
Overview
e JetNet Railway M12 Switch is designed for Train/Vehicle on-board IP Surveillance
application. e Switch’s power input voltage is fully compliant with train’s/Vehicle power
system. e specication of power input voltage shows in table following.
Powering System
A Beijer Electronics Group Company
e railway Ethernet Switch adopts several type of M12 connectors for the power, Ethernet
signal. erefore, the connection is dierent from the traditional Ethernet connector. e
gures as following describe the denition of each conductor.
System Wiring
AWG mm2Current (A)
13 2.62 7.4 (Max)
LVDC (DC 24V version)
Model
Specification of Power Cable – AWG/ mm2
Power Connector – M12 A-Code 5-PIN, Male
Pin Description
1 Power-2, DC+
2 Power-1, DC+
3 Power-1, DC -
4
5
Power-2, DC -
Ignition
Pin Assignment drawing
2 1
3 4
5
Power Type LVDC
DC 24V
9~36V
Typical Input Voltage
Voltage Variation (V)
Power Redundant
Reverse Protection
Specification of System Power
1 2
4 3
JetNet 3808G-M12 D-Code 4-PIN, Female
Cat-6, Cat-7 Shielding Twisted Cable, 24~26AWG
Pin Description PoE
1 PoE V+ / P
2 PoE V- / N
3 PoE V+ / P
4
TX+
RX+
TX-
RX- PoE V- / N
Pin Assignment drawing
JetNet 3808G-M12/3908G-M12 X-Code 8-PIN, Female
Cat-6, Cat-7 Shielding Twisted Cable, 24~26AWG
81
72
63
54
Pin De scr ip tion PoE
1 PoE V+ / P
2 PoE V+ / P
3 PoE V- / N
4 PoE V- / N
5
6
7
8
Pin A ssig nment drawing
Bidirectional (0)+
Bidirectional (0)-
Bidirectional (1)+
Bidirectional (1)-
Bidirectional (3)+
Bidirectional (3)-
Bidirectional (2)-
Bidirectional (2)+
Power Type JetNet 3808G-M12 JetNet 3908G-M12
10/100 Base-TX PoE+
(M12 Female D Code)
1000 Base TX PoE +
(M12 Female X Code)
Power Input : 9-36VDC
(M12 Male A Code)
7
1
1
8
1
ME outline
Rotary Function
Note
Including Rotary
floating
Power Input
<9V
<9V
<9V
Rotary Switch
0
1,2,3
1,2,3
0
1,2,3
1,2,3
Ignition Voltage
> 7.6VDC
< 7.6VDC
> 7.6VDC
< 7.6VDC
System
Off
Off
Off
On
On
Delay off into
Standby mode
Rotary 1: 2 sec
Rotary 2: 5 minutes
Rotary 3: 15 minutes
LED per unit
PWR 1 :
PWR 2 :
PoE LED x 8:
LNK/ACT :
Power ON/O ( Green ON/OFF)
Ignition Function ( Green Blinking)
Standby ON/OFF (Green ON/OFF)
Detection (Amber Blinking)
Power ON/OFF ( Amber ON/OFF)
Link ON/OFF(Green ON/OFF)
ACT ON (Green Blinking)
9~36 VDC
9~36 VDC
9~36 VDC
1Rotary Switch
2Ignition (Pin 5)
3Earth Ground
2
0
1 3
Industrial M12
PoE Switch
1 2 3 4
5 6 7 8
PWR1
PoE
PoE
Lnk
/Act
Lnk
/Act
PWR2
PoE1 PoE2
PoE3 PoE4
PoE5 PoE6
PoE7 PoE8
6
5
2
3
4
18
7
1: D1+
2: D1-
3: D2+
4: D2-
5: D4+
6: D4-
7: D3-
8: D3+
FE/PoE
1: TX+
2: RX+
3: TX-
4: RX-
4
1
3
2
V-
V-
V+
V+
GbE
korenix
JetNet 3808G
116.40
130.00
74.00
140.00
58.00
1
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