Divio NRM 303 User manual

i
Contents
Network Viedo Recorder
User Manual
The manual is applied to the following model:
Model No: NRM 303
Note: The manual is subject to change without notic

ii
Preface
Contents
Preface
Copyright .............................................................................................................................. vi
Disclaimer .............................................................................................................................. vi
Acknowledgements ........................................................................................................... vi
Regulatory Compliance Statements............................................................................. vi
Declaration of Conformity ............................................................................................... vi
RoHS Compliance............................................................................................................... vii
Safety Information ............................................................................................................... x
Installation Recommendations ....................................................................................... x
Safety Precautions............................................................................................................... xi
Technical Support and Assistance................................................................................ xii
Conventions Used in this Manual................................................................................. xii
Chapter 1: Product Introduction
Physical Features .................................................................................................................. 1
NRM303 Front View......................................................................................................... 1
NRM303 Rear View .......................................................................................................... 1
Overview ................................................................................................................................. 3
Key Features ........................................................................................................................... 3
Hardware Specications .................................................................................................... 4
Mechanical Dimensions..................................................................................................... 6
NRM303 .............................................................................................................................. 6
Chapter 2: Jumpers and Connectors
Before You Begin................................................................................................................... 9
Precautions ............................................................................................................................ 9
Jumper Settings..................................................................................................................10
The NRM303 Series System Components .................................................................11
Locations of the Jumpers and Connectors for MVSB 5200.............................11
Top View .......................................................................................................................11
Bottom View................................................................................................................12
DIP Switch Settings............................................................................................................13
ME/RTC Clear Switch................................................................................................13
CN6 VCC Select Switch ............................................................................................13
Input Voltage Control ..............................................................................................14
MDIO Power Switch..................................................................................................14
PCM Switch (For 3G Voice) .....................................................................................15
Connector Pin Denitions...............................................................................................16
External I/O Interfaces - Front Panel .......................................................................16
USB 3.0/USB 2.0 Ports (Co-layout with J26 and J27).....................................16
LED Indicators.............................................................................................................16
Reset Switch (Co-layout with J29).......................................................................17
External I/O Interfaces - Rear Panel.........................................................................18
Audio Connector (Audio-IP CON For Audio) ..................................................18
Line-out Connector..................................................................................................18
Mic-in Connector.......................................................................................................19
LAN1 to LAN8 Ports (Co-layout with J2 to J17) ..............................................19
9V-36V DC Power Input (Co-layout with CON2).............................................20
DC Power Input..........................................................................................................20
DC Output (Co-layout with CN4).........................................................................21

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Preface
Internal Connectors ......................................................................................................22
USB 2.0 Connector....................................................................................................22
Front Panel Audio Connector ...............................................................................22
CFast Card Slot (For PC System Only).................................................................23
GPS Connector...........................................................................................................23
GPS-DR Connector....................................................................................................24
SIO Temp2....................................................................................................................24
RTC Battery Connector............................................................................................25
Debug 80 Port Connector......................................................................................25
Reset Connector ........................................................................................................26
Power Switch Connector ........................................................................................26
MCU Debug COM Connector................................................................................27
SIM Card Connectors (SIM1 and SIM2)..............................................................27
Reset ..............................................................................................................................28
MCU Update Connector .........................................................................................28
DB15 Connector ........................................................................................................29
USB Output..................................................................................................................29
Board to Board Connector (to IO Board)...........................................................30
Board to Board Connector (to IO Board)...........................................................31
IO Board Power Connector....................................................................................32
VIN Connector ............................................................................................................32
Battery Connector.....................................................................................................33
Battery Power Connector.......................................................................................33
LAN Connectors (Two 4-pin Connectors for Each LAN)..............................34
NVR LAN Connector .................................................................................................34
Mini-PCIe Connector for 3G...................................................................................35
Locations of the Jumpers and Connectors for the I/O Board ........................36
Top View .......................................................................................................................36
Bottom View................................................................................................................37
Connector Pin Denitions...............................................................................................38
External I/O Interfaces..................................................................................................38
LAN1 Port (Co-layout with J1 and J2).................................................................38
LAN2 Port (Co-layout with J3 and J4).................................................................38
LAN1 and USB 3.0/USB 2.0 Ports .........................................................................39
(Co-layout with J6 and J7)......................................................................................39
GPIO/CAN Connector .............................................................................................39
(Co-layout with J8, J9 and J10).............................................................................39
COM1 Port (Co-layout with CN7).........................................................................40
COM2 Port (Co-layout with CN8).........................................................................40
LVDS Port......................................................................................................................41
VGA and DVI-D Connectors (Co-layout with J13)..........................................41
Internal Connectors ......................................................................................................42
VGA Connector ..........................................................................................................42
LAN1 Connectors ......................................................................................................42
LAN2 Connectors ......................................................................................................43
COM1 and COM2 Connectors...............................................................................43
GPIO Connector.........................................................................................................44
CAN Module Connector..........................................................................................44
USB 2.0 Connector....................................................................................................45
SATA Power Connector............................................................................................45
CAN Module Connector..........................................................................................46
SATA Power Connectors..........................................................................................46
SATA Connectors .......................................................................................................47
24V Battery-out Connector....................................................................................47
12V Battery-in Connector.......................................................................................48
GPIO Switch.................................................................................................................48
IO Board Power Connector....................................................................................49
SIM Card Slot...............................................................................................................49
Mini-PCIe Connector for WLAN/Bluetooth1....................................................50
Mini-PCIe Connector for mSATA (For PC System Only)................................51
Board to Board Connector (to Motherboard) .................................................52
Board to Board Connector (to Motherboard) .................................................53
Locations of the Jumpers and Connectors for the NVR Board......................54
Connector Pin Denitions...............................................................................................55

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Preface
External I/O Interfaces..................................................................................................55
KVM Switch Connector ...........................................................................................55
Audio Line-out ...........................................................................................................55
USB 2.0 Ports...............................................................................................................56
Reset Connector ........................................................................................................56
Internal Connectors ......................................................................................................57
LAN Connector...........................................................................................................57
NVR/X86 VGA Connectors......................................................................................57
GPIO Connectors.......................................................................................................58
SATA Connectors .......................................................................................................58
SATA Power Connectors - 5V.................................................................................59
Internal USB Connector ..........................................................................................59
Chapter 3: System Setup
Removing the Chassis Bottom Cover .........................................................................60
Installing a SSD/HDD Drive (For NVR System Only)...............................................61
Installing a WLAN Module...............................................................................................65
Installing an mSATA Module (For PC System Only)................................................65
Installing a WWAN Module .............................................................................................66
Installing a SO-DIMM ........................................................................................................67
Installing an OBDII Module.............................................................................................68
Installing Rackmount Brackets......................................................................................69
Appendix A: Software Demo Utility for I/O Ports of
Function Control
Menu Screen ........................................................................................................................70
Cong1 ..............................................................................................................................70
Cong2 ..............................................................................................................................70
G-Sensor............................................................................................................................71
iButton...............................................................................................................................71
RFID.....................................................................................................................................72
Tracker ...............................................................................................................................72
1. Cong1 ....................................................................................................................73
2. Cong2 ....................................................................................................................76
3. G-Sensor ..................................................................................................................77
4. iButton......................................................................................................................77
5. RFID ...........................................................................................................................78
6. Tracker ......................................................................................................................78
Appendix B: GPS Feature
uBlox-NEO M8 Overview .................................................................................................79
Technical Specications...................................................................................................79
Appendix C: Signal Connection of DI/DO
GPIO Pinout Description..................................................................................................81
SW1 Setting..........................................................................................................................81
Digital Input .........................................................................................................................82
Digital Output......................................................................................................................83
Appendix D: Vehicle Power Management Setup
Startup and Shutdown Voltage Setting .....................................................................84
Power-on Delay Setting ...................................................................................................86
Power-o Delay Setting...................................................................................................88
Appendix E: PC-NVR Communication Tool (Utility)
PC-NVR Communication Tool ........................................................................................90
Port for External Switch, PC VGA Output ...................................................................90
VGA Input Port & NVR VGA Output Port ....................................................................90
IP Settings .............................................................................................................................91
Display Mode.......................................................................................................................93
(Example)..........................................................................................................................93
OSD Function.......................................................................................................................96

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Preface
Event .......................................................................................................................................97
(In NVR)..............................................................................................................................97
(In PC-NVR Communication Tool) ......................................................................... 100
KVM ...................................................................................................................................... 101
Selecting Hardware/Software Setting ................................................................ 101
Log ........................................................................................................................................ 103

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Preface
PrefaCe
Copyright
This publication, including all photographs, illustrations and software, is
protected under international copyright laws, with all rights reserved. No
part of this manual may be reproduced, copied, translated or transmitted in
any form or by any means without the prior written consent from Divio Tec
International Co., Ltd.
Disclaimer
The information in this document is subject to change without prior notice and
does not represent commitment from Divio Tec International Co., Ltd. However,
users may update their knowledge of any product in use by constantly checking
its manual posted on our website: http://www.Divio Tec.com. Divio Tec shall not
be liable for direct, indirect, special, incidental, or consequential damages arising
out of the use of any product, nor for any infringements upon the rights of third
parties, which may result from such use. Any implied warranties of merchantability
or tness for any particular purpose is also disclaimed.
Acknowledgements
NRM303 is trademarks of Divio Tec International Co., Ltd. All other product
names mentioned herein are registered trademarks of their respective owners.
Regulatory Compliance Statements
This section provides the FCC compliance statement for Class A devices and
describes how to keep the system CE compliant.
Declaration of Conformity
FCC
This equipment has been tested and veried to comply with the limits for
a Class A digital device, pursuant to Part 15 of FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference
to radio communications. Operation of this equipment in a residential area
(domestic environment) is likely to cause harmful interference, in which
case the user will be required to correct the interference (take adequate
measures) at their own expense.
CE
The product(s) described in this manual complies with all applicable
European Union (CE) directives if it has a CE marking. For computer systems
to remain CE compliant, only CE-compliant parts may be used. Maintaining
CE compliance also requires proper cable and cabling techniques.

vii
Preface
RoHS Compliance
Divio Tec RoHS Environmental Policy and Status
Update
Divio Tec is a global citizen for building the digital
infrastructure. We are committed to providing green
products and services, which are compliant with
European Union RoHS (Restriction on Use of Hazardous Substance in
Electronic Equipment) directive 2011/65/EU, to be your trusted green partner
and to protect our environment.
RoHS restricts the use of Lead (Pb) < 0.1% or 1,000ppm, Mercury (Hg) < 0.1%
or 1,000ppm, Cadmium (Cd) < 0.01% or 100ppm, Hexavalent Chromium
(Cr6+) < 0.1% or 1,000ppm, Polybrominated biphenyls (PBB) < 0.1% or
1,000ppm, and Polybrominated diphenyl Ethers (PBDE) < 0.1% or 1,000ppm.
In order to meet the RoHS compliant directives, Divio Tec has established an
engineering and manufacturing task force to implement the introduction of
green products. The task force will ensure that we follow the standard Divio
Tec development procedure and that all the new RoHS components and new
manufacturing processes maintain the highest industry quality levels for
which Divio Tec are renowned.
The model selection criteria will be based on market demand. Vendors and
suppliers will ensure that all designed components will be RoHS compliant.
How to recognize Divio Tec RoHS Products?
For existing products where there are non-RoHS and RoHS versions, the
sux “(LF)” will be added to the compliant product name.
All new product models launched after January 2013 will be RoHS compliant.
They will use the usual Divio Tec naming convention.

viii
Preface
Installation Recommendations
Ensure you have a stable, clean working environment. Dust and dirt can get
into components and cause a malfunction. Use containers to keep small
components separated.
Adequate lighting and proper tools can prevent you from accidentally
damaging the internal components. Most of the procedures that follow
require only a few simple tools, including the following:
▪A Philips screwdriver
▪A at-tipped screwdriver
▪A grounding strap
▪An anti-static pad
Using your ngers can disconnect most of the connections. It is recommended
that you do not use needle-nose pliers to disconnect connections as these
can damage the soft metal or plastic parts of the connectors.
Safety Information
Before installing and using the device, note the following precautions:
▪Read all instructions carefully.
▪Do not place the unit on an unstable surface, cart, or stand.
▪Follow all warnings and cautions in this manual.
▪When replacing parts, ensure that your service technician uses parts
specied by the manufacturer.
▪Avoid using the system near water, in direct sunlight, or near a heating
device.
▪The load of the system unit does not solely rely for support from the
rackmounts located on the sides. Firm support from the bottom is highly
necessary in order to provide balance stability.
▪The computer is provided with a battery-powered real-time clock circuit.
There is a danger of explosion if battery is incorrectly replaced. Replace
only with the same or equivalent type recommended by the manufacturer.
Discard used batteries according to the manufacturer’s instructions.
▪There must be a disconnect device in front of“NRM303 Series” to keep the
worker or eld side maintainer be cautious and aware to close the general
power supply before they start to do maintenance. The disconnect device
hereby means a 20A circuit-breaker. Power installation must be performed
with qualied electrician and followed with National Electrical Code, ANSI/
NFPA 70 and Canadian Electrical Code, Part I, CSA C22.1.
▪The front of the equipment requires wiring terminals with the following
specications:
Wire size: 30-12 AWG
Wire Type: copper wire only
Terminal Blocks Torque: 5 lb In.
For supply connections, use wires suitable for at least 75°C.

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Preface
Safety Precautions
1. Read these safety instructions carefully.
2. Keep this User Manual for later reference.
3. Disconnect this equipment from any AC outlet before cleaning. Use a
damp cloth. Do not use liquid or spray detergents for cleaning.
4. For plug-in equipment, the power outlet socket must be located near the
equipment and must be easily accessible.
5. Keep this equipment away from humidity.
6. Put this equipment on a stable surface during installation. Dropping it or
letting it fall may cause damage.
7. The openings on the enclosure are for air convection to protect the
equipment from overheating. DO NOT COVER THE OPENINGS.
8. Make sure the voltage of the power source is correct before connecting
the equipment to the power outlet.
9. Place the power cord in a way so that people will not step on it. Do not
place anything on top of the power cord. Use a power cord that has been
approved for use with the product and that it matches the voltage and
current marked on the product’s electrical range label. The voltage and
current rating of the cord must be greater than the voltage and current
rating marked on the product.
10. All cautions and warnings on the equipment should be noted.
11. If the equipment is not used for a long time, disconnect it from the
power source to avoid damage by transient overvoltage.
12. Never pour any liquid into an opening. This may cause re or electrical
shock.
13. Never open the equipment. For safety reasons, the equipment should be
opened only by qualied service personnel.
14. If one of the following situations arises, get the equipment checked by
service personnel:
a. The power cord or plug is damaged.
b. Liquid has penetrated into the equipment.
c. The equipment has been exposed to moisture.
d. The equipment does not work well, or you cannot get it to work
according to the user’s manual.
e. The equipment has been dropped and damaged.
f. The equipment has obvious signs of breakage.
15. Do not place heavy objects on the equipment.
16. The unit uses a three-wire ground cable which is equipped with a third
pin to ground the unit and prevent electric shock. Do not defeat the
purpose of this pin. If your outlet does not support this kind of plug,
contact your electrician to replace your obsolete outlet.
17. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY
REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE
RECOMMENDED BY THE MANUFACTURER. DISCARD USED BATTERIES
ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS.

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Preface
Technical Support and Assistance
1. For the most updated information of Divio Tec products, visit Divio Tec’s
website at www.Divio Tec.com.
2. For technical issues that require contacting our technical support team or
sales representative, please have the following information ready before
calling:
– Product name and serial number
– Detailed information of the peripheral devices
– Detailed information of the installed software (operating system,
version, application software, etc.)
– A complete description of the problem
– The exact wordings of the error messages
Warning!
1. Handling the unit: carry the unit with both hands and handle it with care.
2. Maintenance: to keep the unit clean, use only approved cleaning products
or clean with a dry cloth.
3. CFast: Turn o the unit’s power before inserting or removing a CFast
storage card.
Conventions Used in this Manual
Warning:
Information about certain situations, which if not observed,
can cause personal injury. This will prevent injury to yourself
when performing a task.
CAUTION!
CAUTION!CAUTION! Caution:
Information to avoid damaging components or losing data.
Note:
Provides additional information to complete a task easily.

1
Preface
ChaPter 1: ProduCt IntroduCtIon
Physical Features
NRM303 Front View NRM303 Rear View
Antenna holes
VGA
Output
Antenna holesVGA Input NVR VGA
Output
Multi
I/O
2x 2.5“
SDD/HDD Tray
NVR indicators
NVR
USB 2.0
NVR
Line-out
Switch
Line-out
SIM1 / SIM2 / CFast
slot cover
USB 3.0
USB 2.0
LED
indicators
LAN2LAN1
DC Input
GPIO
CAN
OBDII
COM1
COM2
USB 3.0
USB 2.0
Reset Mic-in PoE1 to PoE8
LVDS
DC Output

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Preface
Key Features
▪Multitasking PC + NVR + tracker function
▪Vehicle information stamp in video (NRM303 Series)
▪8x RJ45 10/100/1000 Mbps 802.3af PoE ports
8x M12 10/100/1000 Mbps 802.3af PoE ports
▪Fanless design
▪5th generation Intel®Core™ dual core i3-5010U, 2.1GHz
(NRM303)
5th generation Intel®Core™ dual core i7-5650U, 2.2GHz
(NRM303 )
▪Dual removable SATA 3.0 SSD/HDD
▪7/24 GNSS tracker function support even PC is o
▪Built-in CAN 2.0B. Optional OBDII function (SAE J1939)
(NRM303 series)
▪9~36VDC power input (NRM303 series)
Overview
The NRM303 series for mobile and railway applications respectively, perform
8-CH live view when keeping recording the video simultaneously without lags.
The two series provide multitasking capability such as running video analytics
software like people counting continuously while recording real-time videos.
The NRM303 network video recorders (NVR) promote increased safety and
security for bus and railway passenger transportation with high video frame
rates and 2 removable extensive storage HDD/SSD capacity. The NVRs connect
up to 8 IP cameras + PoE function providing reliable and high quality video
coverage around buses and trains. Vehicle and railway information stamp such
as location, speed or other critical data can be recorded and shown in video.
Both series leverage wireless networks to simplify eet management with
capabilities such as remote, real-time video monitoring. This remote capability
keeps transit eets in service around the clock. The NRM303 series also
carries out vehicle data integration and diagnostics via CAN Bus and OBDII,
and is certied for MIL-STD-810G for shock and vibration to operate in harsh
environments.
For added physical security, the pre-alarm function on both series features 2
x DI, 2 x DO and GNSS that can operate in power-o state, ensuring vehicle
and railway location, alarm and emergency notications are constantly
available at times of intrusion or urgent conditions. Optional back-up
battery guards against any unexpected vehicle power failure or unstable
vehicle power.

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Preface
Hardware Specications
NVR System
Video Codec
▪H.264
Audio Codec
▪G.726/G.711
Live View Resolutions
▪QVGA/VGA/SXGA/Full HD/3M/5M
Recording Resolution
▪QVGA~5M
Live Preview
▪Support 1/4/9 division, full-screen, snapshot
Record
▪Round the clock/motion record modes/event trigger
Record Device
▪2x 2.5” SATA 2.0 removable HDD/SSD trays with lock
Playback
▪1/4/9 division, full-screen/snapshot/display original ratio or t window
▪Search mode: Play/reverse/pause/seek/pre frame/next frame
▪Speeds: 1/4, 1/2, 1, 2, 4, 8, 16, 32
Video Stamp
▪Capability to show and record vehicle and railway information in video
*AMTK camera is required
Camera Setting
▪Auto search, prole selectable, ONVIF support
Disk Management
▪Partition management, format partition, S.M.A.R.T status
PC System
CPU
▪5th generation Intel®Core™ dual core i3-5010U, 2.1GHz
(NRM303)
▪5th generation Intel®Core™ dual core i7-5650U, 2.2GHz
(NRM303 )
Memory
▪2-channel 204-pin DDR3L SO-DMIM socket support 1600MHz up to
16GB, default 2GB industrial grade memory
Storage
▪1x CFast (externally accessible), 1x mSATA
Expansion
▪1x full size Mini-PCIe socket (USB 2.0), 1x full size Mini-PCIe socket (USB
2.0 + PCIe), 1x full size Mini-PCIe socket (mSATA)
GPS and Onboard Sensor
▪1x default U-blox NEO-M8N GNSS module for GPS/Gloness/QZSS/Galileo/
Beidou

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Preface
▪Optional modules with Dead Reckoning available
▪Built-in G-sensor
Power over Ethernet
▪8-port RJ45 for 10/100/1000 Mbps PoE IEEE 802.3af conformity, total 60W
(NRM303 series)
I/O Interface-Front
PC Function
▪4x LED indicators for power/storage/WLAN/WWAN
▪1x CFast socket with cover. 1x Reset button
▪2x dual USB type A connectors for 1x USB 3.0 + 1x USB 2.0 port
▪1x DB15 connector
– MCU DIO (2x DI, 2x DO), 1x analog input, 1x speed frequency input,
1x iButton, 1x RS232 (only for RFID reader w/ 12VDC output),
1x direction signal for optional Dead Reckoning module
▪2x externally accessible SIM card sockets (selectable)
▪6x antenna holes for WWAN/WLAN/BT/GPS
NVR Function
▪2x removable 2.5”HDD/SSD trays with lock
▪1x DB-15 VGA output for live view
▪1x DB-15 VGA input for PC VGA switch
I/O Interface-Rear
PC Function
▪8x RJ45 10/100/1000 Mbps PoE ports (NRM303 series)
▪2x RJ45 10/100/1000 Intel®Fast Ethernet with LED (NRM303 series)
▪1x 9~36VDC input with ignition and 80W typical power consumption
(NRM303 series)
▪1x dual USB type A connector for USB 3.0 port + USB 2.0 port
▪2x phone jacks 3.5mm for 1x Mic-in and 1x Line-out
(NRM303 series)
▪1x DB-15 VGA, resolution up to 2560 x 1600 @ 60Hz
▪1x DB26 LVDS interface with 12V and USB 2.0
▪2x DB-9 RS-232/422/485 (w/ optional 3KV isolation protection)
▪1x 12VDC output (2A) + battery bypass DC output (2A) + SM Bus
▪1x 16-pin terminal block connector
– 1x CAN Bus 2.0B (onboard)
– 1x OBDII from optional VIOB-OBD-03 module (SAE J1939)
(NRM303 series)
– 1x CAN Bus 2.0B from optional VIOB-CAN-03 module
(NRM303 series)
– 8x GPIO
– (4x Digital inputs, w/ optional 3KV isolation protection)
Input voltage (internal type): 5VDC TTL (default)
Input voltage (source type): 3 ~ 12VDC
– (4x Digital outputs, w/ optional 3KV isolation protection)
Digital output (sink type): 5VDC TTL (default), max current: 20mA
Digital output (source type): 3 ~ 24VDC, max current: 150mA
NVR Function
▪2x USB type A connectors, 1x Reset button
▪1x switch for VGA input selection (NVR or PC)
▪4x LED indicators for power/storage/storage alarm/camera
▪1x phone jack 3.5mm for 1x Line-out
Power Management
▪Selectable boot-up & shut-down voltage for low power protection by

5
Preface
software. Setting 8-level power on/ o delay time by software.
Support S3/S4 suspend mode
▪Optional internal 1100mAh, Li-Polymer rechargeable battery
Operating System
▪Windows 7/WES7/Windows 8/WES8/Linux kernel 3.X
Dimensions
▪260mm (W) x 206mm (D) x 137mm (H) (10.24”x 8.11”x 5.39”)
▪3.3kg
Environment
NRM303 Series
▪Operating temperatures (without internal battery):
-30°C~50°C (w/ industrial SSD) with air ow
▪Operating temperatures (with internal battery, discharging):
-20°C~45°C (w/ industrial SSD) with air ow
▪Storage temperatures: -40°C~80°C
▪Relative humidity: 10% to 90% (non-condensing)
▪Vibration (random):
1.5g@5~500 Hz (in operation, HDD), 2g@5~500 Hz (in operation, SSD)
▪Vibration (SSD/HDD):
– Operating: MIL-STD-810G, Method 514.6, Category 4, common
carrier US highway truck vibration exposure
– Storage: MIL-STD-810G, Method 514.6, Category 24, minimum
integrity test
▪Shock (SSD/HDD):
– Operating: MIL-STD-810G, Method 516.6, Procedure I, functional
shock=20g
– Non-operating: MIL-STD-810G, Method 516.6, Procedure V, crash hazard
shock test=75g

6
Preface
Mechanical Dimensions
NRM303

9
Preface
ChaPter 2: JumPers and ConneCtors
This chapter describes how to set the jumpers and connectors on the
NRM303 series motherboard.
Before You Begin
▪Ensure you have a stable, clean working environment. Dust and dirt can
get into components and cause a malfunction. Use containers to keep
small components separated.
▪Adequate lighting and proper tools can prevent you from accidentally
damaging the internal components. Most of the procedures that follow
require only a few simple tools, including the following:
– A Philips screwdriver
– A at-tipped screwdriver
– A set of jewelers screwdrivers
– A grounding strap
– An anti-static pad
▪Using your ngers can disconnect most of the connections. It is
recommended that you do not use needle-nosed pliers to disconnect
connections as these can damage the soft metal or plastic parts of the
connectors.
▪Before working on internal components, make sure that the power is o.
Ground yourself before touching any internal components, by touching
a metal object. Static electricity can damage many of the electronic
components. Humid environments tend to have less static electricity than
dry environments. A grounding strap is warranted whenever danger of
static electricity exists.
Precautions
Computer components and electronic circuit boards can be damaged by
discharges of static electricity. Working on computers that are still connected
to a power supply can be extremely dangerous.
Follow the guidelines below to avoid damage to your computer or yourself:
▪Always disconnect the unit from the power outlet whenever you are
working inside the case.
▪If possible, wear a grounded wrist strap when you are working inside the
computer case. Alternatively, discharge any static electricity by touching
the bare metal chassis of the unit case, or the bare metal body of any
other grounded appliance.
▪Hold electronic circuit boards by the edges only. Do not touch the
components on the board unless it is necessary to do so. Don’t ex or
stress the circuit board.
▪Leave all components inside the static-proof packaging that they shipped
with until they are ready for installation.
▪Use correct screws and do not over tighten screws.

10
Preface
Jumper Settings
A jumper is the simplest kind of electric switch. It consists of two metal
pins and a cap. When setting the jumpers, ensure that the jumper caps are
placed on the correct pins. When the jumper cap is placed on both pins, the
jumper is short. If you remove the jumper cap, or place the jumper cap on
just one pin, the jumper is open.
Refer to the illustrations below for examples of what the 2-pin and 3-pin
jumpers look like when they are short (on) and open (o).
Two-Pin Jumpers: Open (Left) and Short (Right)
Three-Pin Jumpers: Pins 1 and 2 are Short
1
2
3
1
2
3

11
Preface
The NRM303 Series System Components
Locations of the Jumpers and Connectors for MVSB 5200
CN4
CN3
CON3 CON4
CON1/CON2
J1
CN1 CN2
J2
J10
J3
J11
J4
J12
J5
J13
J6
J14
J7
J15
J8
J16
J9
J17
CN9
LED4 LED5
CN7
J22
J25
SW5
CN8
CN11J29
J21
SW1
SW2
SW10
J20
J19
J18
CN5
J23
JP1
SW3
J24
J26
J27
JP3
SW4
JP5
JP4
CN6
J28
JP2
The NRM303 series consist of a MVSB 5200 motherboard and I/O board.
This chapter lists the location and pinout assignment of the jumpers and
connectors on each component.
Top View

12
Preface
Bottom View
CN13 CN12