Korenix JetNet 3808G Series User manual

Korenix JetNet 3808G Series
JetNet 3808G-M12/ 3908G-M12
Industrial Power over Ethernet GbE Switch
User’s Manual
Version: 1.0
www.korenix.com

Korenix
JetNet 3808G-M12/ JetNet 3908G-M12
1
Korenix JetNet 3808G Series
JetNet 3808G-M12/ 3908G-M12
Industrial Power over Ethernet GbE Switch
Copyright Notice
Copyright © 2018 Korenix Technology Co., Ltd.
All rights reserved.
Reproduction in any form or by any means without permission is prohibited.

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JetNet 3808G-M12/ JetNet 3908G-M12
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Index
Index...............................................................................................................................2
1. Introduction ...............................................................................................................3
1.1 Overview ..........................................................................................................4
1.2 Product Features..............................................................................................5
2. Hardware Installation.................................................................................................6
2.1 Hardware Introduction ............................................................................................6
Dimensions.....................................................................................................6
Front Panel.....................................................................................................8
Connector definition......................................................................................9
LED Indicators...............................................................................................10
2.2 Wiring the Power Inputs................................................................................10
2.4 Wiring Earth Ground......................................................................................11
2.5 Rotary Switches (Ignition Function)...............................................................11
3. Appendix ..................................................................................................................14
3.1 Product Specification .....................................................................................14
3.2 Revision History..............................................................................................16

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JetNet 3808G-M12/ JetNet 3908G-M12
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1. Introduction
Korenix JetNet 3808G-M12 Series is a power over Ethernet rail switch that is specially
designed for industrial or commercial applications. The following topics are covered
in this chapter:
1.1 Overview
1.2 Product Features

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JetNet 3808G-M12/ JetNet 3908G-M12
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1.1 Overview
JetNet 3808G-M12 series, Industrial Power over Ethernet (PoE) GbE Switches, are
designed with 1 Gigabit and 7 Fast Ethernet PoE ports to ensure high-bandwidth
uplink connection for wide PoE markets. This series include JetNet 3808G-M12/
3908G-M12 which are all compliant with IEEE 802.3af/at PoE standard to deliver
maximum 30 Watts/ per port. For JetNet 3808G-M12 models, it integrates with
Korenix patented power boost technology- Input DC 9~36V boosting to 48V built-in
power booster which is the best solution for the vehicle PoE applications with
standard DC 48V power supply unavailable.
To ensure the high quality of video data transmission, JetNet 3808G series not only
provides Gigabit bandwidth uplink for large image traffic, but also support CoS to
adjust the priority of data transmission. The compact size with IP-41 steel metal case
allows JetNet 3808G-M12 series to be reliably operated in -40~75℃extreme
environment.

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JetNet 3808G-M12/ JetNet 3908G-M12
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1.2 Product Features
Korenix JetNet 3808G-M12/ 3910G-M12 have the following features:
JetNet
3808G-M12
JetNet
3908G-M12
Features Highlight
10/100 TX PoE port
7
10/100/1000 TX PoE port
1
8
PoE Standard compliant:
IEEE802.3af/at PoE
Yes
Yes
PoE Power per port
30W
30W
Total PoE Power Budget
120W*
120W*
Class of Service
Yes
Yes
Aluminum Case Protection
IP41(IP54 by request)
IP41(IP54 by request)
Operating Temperature
-40~75℃
-40~75℃
Power Input
12~24V power input, 48V PoE
output
48V power input, 48V PoE
output
*Specifications may change without prior notice

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JetNet 3808G-M12/ JetNet 3908G-M12
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2. Hardware Installation
2.1 Hardware Introduction
Dimensions
JetNet 3808G-M12 dimensions: 116(H) x 146(W) x 58(D)

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JetNet 3808G-M12/ JetNet 3908G-M12
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JetNet 3908G-M12 dimensions: 116(H) x 146(W) x 58(D)

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JetNet 3808G-M12/ JetNet 3908G-M12
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Front Panel
JetNet 3808G-M12/ 3908G-M12 include system power LED x1, PoE LED x8; and 8
LEDs for the port operating status.
JetNet 3808G-M12 / JetNet 3908G-M12
Lnk/Act LED
PoE LED
PWR LED
Power Ignition
Ignition Input

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JetNet 3808G-M12/ JetNet 3908G-M12
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Connector definition

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JetNet 3808G-M12/ JetNet 3908G-M12
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LED Indicators
The following table describes the function of each LED indicator.
LED
Status
Description
PWR1
Green
DC-IN Power Jack is On
Off
No Power Input
Blinking
Delay time off into standby mode
PWR2
Green
DC-IN Power Jack is On, System Standby
Off
No Power Input
PoE
Amber on
The port is delivering PoE power.
Amber blinking
PoE detection
Lnk/Act
Green on
The port is attached with partner.
Green Blinking
The port is transmitting or receiving packets.
Off
The port’s link is inactive
2.2 Wiring the Power Inputs
JetNet 3808G-M12/ 3908G-M12 power input is 9~36VDC and boosts to 48V DC
output for 802.3af/at standard PoE devices.

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JetNet 3808G-M12/ JetNet 3908G-M12
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IMPORTANT: Do make sure that different models must connect to the corresponding
supply voltage. Guarantee will not apply to the damage caused by wrong input power.
Note: The product intended to be supplied by LPS power supply.
1. Insert the positive and negative wires of your DC supply into the V+ and V-
contacts of the M12 A-Code Female connector. The acceptable wire range is 12 to 24
AWG.
2.4 Wiring Earth Ground
To ensure the system will not be damaged by noise or electric shock, we suggest
making a direct connection between the JetNet 3808G-M12/ JetNet3908G-M12 and
earth ground to avoid system damage in below photo.
1. On the right side of bottom of the JetNet 3808G-M12/ JetNet3908G-M12, there is
one earth ground screw.
2. Loosen the earth ground screw with a screwdriver
3. Tighten the screw after the earth ground wire is connected.
2.5 Rotary Switches (Ignition Function)
4-Pin rotary switch is one of components to trigger delay off into standby mode
function, the detail show in table 1, how does ignition function work. It is showed in
diagram 1.

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JetNet 3808G-M12/ JetNet 3908G-M12
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(Table 1)

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JetNet 3808G-M12/ JetNet 3908G-M12
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(Diagram 1)

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JetNet 3808G-M12/ JetNet 3908G-M12
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3. Appendix
3.1 Product Specification
3.2 Revision History
3.1 Product Specification
Technology
Standard
IEEE 802.3u 10Base-T Ethernet
IEEE 802.3u 100Base-TX Fast Ethernet
IEEE 802.3ab 1000Base-TX Gigabit Ethernet
IEEE 802.3af Power over Ethernet
IEEE 802.3at High Power PoE with 2-Event classification
IEEE 802.3x Flow control and back-pressure
Network Performance
Switch Technology
Store and Forward technology with 3.4Gbps non-blocking
System Throughput
23.8Mega packets per second, 64Bytes packet length
Transfer packet size
64Bytes ~1518Bytes
MAC Address
16K MAC address table
Packet Buffer
2 Mega bits shared packet buffer
Broadcast storm control:
Default enabled
Traffic threshold:
25M bps@1000Mbps;
10M bps@100Mbps;
1M bps@10 Mbps
Jumbo frame
Up to 10K Bytes
Transfer performance
14,880 pps @10Mbps
148,800 pps @100Mbps
1,488,100 pps @1000Mbps
Class of Service
Default Enabled
Compliance with IEEE802.1p class of service with Tag Based Priority
rule. Each switch port provides 4 priority queues as following - 8

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(Higher) : 4(High) : 2(Low) :1(Lower) scheduling.
The Tag Priority ID as following: Highest (6,7), High (4,5), Low (0,3),
Lowest (1,2)
Power over Ethernet
Power over Ethernet
IEEE 802.3af/at, End-Span wiring architecture
PoE operating mode
Auto Mode: IEEE 802.3af/at behaviors with IEEE 802.3at 2-Event for
high power IEEE 802.3at 2-event PD device
PoE forwarding conductor
M12 X-Code (Port 1): V+(1,2), V- (3,4)
M12 D-Code (Port 2~8): V+(1,3), V- (2,4)
Power forwarding
capability
IEEE 802.3af:15.4 W, IEEE802.3at:30W
PoE System Power Budget
Power Budget Reserve by PD declaration. The power budget control
system will reserve power for connected PD device. Once the latest
PD device claimed power over the system surplus power budget, the
highest port of PoE will not be active due to port order mechanism.
System Power Budget: 120Watts at DC 24V/ 60 Watts at DC 12V
Interface
Enclosure Port
•1000 Base-T/Gigabit Ethernet (Port #1): 1 x M12-X Code 8-pin
Female
•10/100 Base-T/TX Fast Ethernet (Port #2~#8): 7 x M12-D Code
4-pin Female
•M12-X (Conductor #): (#1) 0P(D1+)/PoE V+, (#2) 0N(D1-)/PoE
V+, (#3)1P(D2+)/PoE V-, (#4)1N(D2-)/PoE V-, (#5)3P(D4+)
(#6)3N(D4-), (#7) 2N (D3-), (#8) 2P (D3+)
•Power: M12 A-Code 5-pin Male
LED Indicators
Port 1~8: Link (Green on)/Activity (Green Blinking)
PoE Detection (Amber Blinking)/ PoE power forwarding (IEEE
802.3af/at-Amber on)
Power: System Power Ready (Green on), Ignition function Activity
( Green Blinking)
Power Requirement
System Power
Input voltage: DC 12V or DC 24V, variation range DC 9- 36 V
Power consumption
6 Watts @ DC 24V without PD loading
120 Watts @ DC 24V max.

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Power Ignition Management
The count-down timer supports 4 scenarios which can be configured by
Rotary-switch. The detail shows in user manual.
Mechanical
Installation
Wall Mounting
Enclosure Material
Steel Metal with textured paint
Ingress Protection
IP-41 (IP54 available by request)
Dimension (mm)
116 mm (H) x 140 mm (W) x 58 mm (D) (without wall mount clip)
Weight (Kg)
1.105
Environmental
Operating Environment
-40°C~75°C (120 Watts PoE/PD Loading), 0~90%, Non-condensing
Storage Environment
-40°C~85°C, 0~90% Non-Condesing
Hi-Pot
AC 1KV for ports-power, power-case
Approvals
Railway Standard
EN50155, EN 50121-4, EN50121-3-2
Traffic
E-mark E13 10R-05 14802
EMC
EMI: EN50121-3-2, FCC Class A, IEC/EN61000-6-4
EMS:EN50121-3-2/EN50121-1, IEC/EN61000-6-2
IEC/EN61000-4-2, IEC/EN61000-4-3, IEC/EN61000-4-4,
IEC/EN61000-4-5, IEC/EN61000-4-6, IEC/EN61000-4-8, IEC/EN61000-4-9
Variation/Shock
IEC 61373
Free Fall
IEC 60068-2-32 with package Note-1
MTBF (hrs)
379,940
Warranty
5 Years
3.2 Revision History
Edition
Date
Modifications
V0.1
09/04/2018
New edition