March Networks 8724 V Tribrid NVR User manual

March Networks
8724 V Tribrid NVR
Installation Guide

Copyright © 2019. March Networks Corporation. All rights reserved.
Information in this document is subject to change without notice. MARCH NETWORKS,
March Networks Command, March Networks Searchlight, March Networks RideSafe, and
the MARCH NETWORKS logo are trademarks of March Networks Corporation. All other
trademarks are the property of their respective owners.
The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are
trademarks or registered trademarks of HDMI Licensing LLC in the United States and
other countries.
North America.....................................1 800 563 5564
Latin America.......................................+52 55 5259 9511
Europe..................................................+39 0362 17935
Asia.......................................................+65 6818 0963
Australia and New Zealand.................+61 1300 089 419
Middle East and Africa........................+971 04 399 5525
www.marchnetworks.com
Notice of Rights
The software described in this document is furnished under a license agreement or
nondisclosure agreement. The software may be used or copied only in accordance with
the terms of those agreements. The contents of this manual and accompanying software
are protected by copyright. No part of this publication may be reproduced, stored in a
retrieval system, or transmitted, in any form or by any means, electronic, mechanical,
recording, or otherwise without the prior written permission of March Networks
Corporation.
Part Number
35484 rev 6.1, December 2019

8724 V Tribrid NVR Installation Guide 3
Contents
Chapter 1: Mandatory Regulations .............................................5
Regulatory Compliance Statements..................................................................................... 5
Canada - Industry Canada.............................................................................................. 5
United States - Federal Communications Commission................................................. 5
Europe ............................................................................................................................. 5
Environmental Directive Compliance................................................................................... 6
Battery Notices ...................................................................................................................... 6
NiCd Battery Pack Notice............................................................................................... 6
Lithium Battery Notice ................................................................................................... 6
Avis pour les batteries........................................................................................................... 7
Avis sur le bloc de batterie NiCd.................................................................................... 7
Avis sur la batterie Lithium............................................................................................. 7
Safety Notices ........................................................................................................................ 7
Avis de sécurité...................................................................................................................... 8
Fuse ..................................................................................................................................... 8
Fusible ................................................................................................................................. 8
Ground Connection ............................................................................................................ 8
Connection de mise à terre ................................................................................................ 8
Installation Location ...........................................................................................................8
Endroit ou l’installation est permise .................................................................................. 8
Anti-Static Precautions .........................................................................................................9
Servicing Notice..................................................................................................................... 9
Shipping Notice ..................................................................................................................... 9
Model Definition Information................................................................................................ 9
Chapter 2: Feature Overview.....................................................10
Key Features......................................................................................................................... 11
Configuration Options ................................................................................................. 11
Internal Storage Options .............................................................................................. 11
Features......................................................................................................................... 11
Packaging/Shipment Contents........................................................................................ 12
Installation and Maintenance Warning............................................................................. 12
Related User Guides ......................................................................................................... 12

8724 V Tribrid NVR Installation Guide 4
Contents
Specifications........................................................................................................................13
Dimensions of the Recorder Unit .....................................................................................13
Weight................................................................................................................................13
Operating and Storage Temperature................................................................................13
Power Ratings....................................................................................................................13
Video Inputs - HDoC and PoE..............................................................................................14
Video Module Location and Numbering ..........................................................................15
Video Capture Rates.............................................................................................................16
HDoC Cameras...............................................................................................................16
Non-HD Analog Cameras ..............................................................................................16
IP Cameras .....................................................................................................................16
HDoC Modules ......................................................................................................................16
HDoC Camera Power.....................................................................................................16
PoE Modules..........................................................................................................................17
LEDs for the PoE Ethernet Ports ..................................................................................17
Power Details for the 8 PoE Ethernet Ports on a PoE Module ....................................17
Current Limits for the PoE Ethernet Ports ...................................................................17
Status LEDs ...........................................................................................................................18
QR Code ................................................................................................................................19
Two External USB Ports .......................................................................................................20
Main Circuit Board ................................................................................................................21
Alarm and Switch Terminals ................................................................................................22
Connecting an Alarm or Switch Device............................................................................22
RS-232 Interface ...................................................................................................................23
RS-232 Interface ................................................................................................................23
Audio Terminals ....................................................................................................................24
Audio Input ........................................................................................................................24
Audio Output.....................................................................................................................24
HD Monitor Output ..............................................................................................................25
Ethernet Network Port ........................................................................................................26
Two Internal USB Ports .......................................................................................................26
LAN USB Adapter .................................................................................................................26
Power Supply and Connection ............................................................................................27
Ground Connection ..............................................................................................................28
Grounding Method.........................................................................................................28
Cable Routing .......................................................................................................................29
Hard Drives............................................................................................................................30
Hard Drive Details..............................................................................................................30
NiCd Battery Pack and Lithium Battery..............................................................................31
NiCd Battery Pack .............................................................................................................31
Lithium Battery..................................................................................................................31
Chapter 3: Unit Setup.................................................................32
Accessing the Internal Components of the Recorder........................................................33
Mounting the Recorder ........................................................................................................34
Mounting Location ............................................................................................................34
Installing or Replacing the Hard Drives ..............................................................................37
Installing or Replacing Video Input Modules .....................................................................40

8724 V Tribrid NVR Installation Guide 5
Chapter 1
Mandatory Regulations
You must be familiar with the following mandatory regulations governing the product’s operations.
You should also adhere to these instructions to ensure the installation meets regulatory
compliance.
Regulatory Compliance Statements
Canada - Industry Canada
This Class A digital apparatus complies with Canadian ICES-003.
CAN ICES-3 (A)/NMB-3(A)
United States - Federal Communications Commission
1 This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy, and if not installed and used in
accordance with the installation guide, is liable to cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference, in which case users will be required to correct the interference at their own
expense. Modifications not expressly approved by the manufacturer could void the user's
authority to operated the equipment under FCC rules.
2 This device complies with part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Europe
This equipment complies with the following EU directives: 2014/30/EU, 2014/35/EU, and 2011/
65/EU. A Declaration of Conformity is available upon request.

8724 V Tribrid NVR Installation Guide 6
Mandatory Regulations
Environmental Directive Compliance
March Networks is committed to doing our part to protect the environment. March Networks is
compliant with current RoHS and WEEE directives:
• RoHS 2 or RoHS recast (directive 2011/65/EU) and its amendments
• WEEE recast (directive 2012/19/EU) and its amendments
Further details on corporate environmental policies and on RoHS and WEEE compliance are
available from March Networks customer support.
Battery Notices
CAUTION: There is risk of explosion if any battery is replaced with another battery of the
incorrect type. Ensure that you only use the NiCd battery pack and lithium battery
provided by March Networks.
NiCd Battery Pack Notice
The unit contains an internal NiCd battery pack that is used during power shortages. The NiCd
battery pack may explode, leak, or get hot, causing personal injury if the following precautions are
not followed:
• Do not remove the NiCd battery pack and use it in a device other than the recorder.
• The unit has a built-in battery charger. Do not attempt to charge the NiCd battery pack using a
different battery charger.
• Replace only with a March Networks NiCd battery pack.
• Do not disassemble the NiCd battery pack.
• Do not open or try to open the individual NiCd battery pack cells.
• Do not dispose of the NiCd battery pack in fire.
• Do not short circuit the NiCd battery pack terminals.
Dispose of the NiCd battery pack in accordance with all applicable federal, state, provincial, and
local regulations. Inquire with your local recycling office for recycling guidelines.
Lithium Battery Notice
The unit contains an internal lithium battery that powers the clock and other system operations.
Ensure you consider the lithium battery when disposing of the unit. Dispose of the lithium battery in
accordance with all applicable federal, state, provincial, and local regulations. Inquire with your
recycling office for recycling guidelines.

8724 V Tribrid NVR Installation Guide 7
Mandatory Regulations
Avis pour les batteries
ATTENTION: Il y a un risque d’explosion si une batterie est remplacée par un autre type de batterie.
Assurez-vous d’utiliser le bloc de batterie NiCd et la batterie Lithium de March Networks.
Avis sur le bloc de batterie NiCd
L’unité contient un bloc de batterie interne qui est utilisé lors de pannes de courant. Le bloc de
batterie NiCd peut exploser, couler ou devenir chaud, pouvant causer des blessures si les
précautions suivantes ne sont pas respectées :
• Ne pas enlever le bloc de batterie NiCd et/ou l’utiliser à d’autres fins.
• L’unité a un chargeur de batterie intégré. N’utiliser pas un autre chargeur pour charger le bloc
de batterie.
• Remplacer seulement avec les blocs de batterie de marque March Networks.
• Ne pas modifier le bloc de batterie NiCd.
• Ne pas ouvrir ou tenter d’ouvrir la batterie individuelle NiCd
• Ne pas jeter le bloc de batterie dans le feu.
• Ne pas court-circuiter les terminaux du bloc de batterie NiCd.
Disposer du bloc de batterie NiCd en accord avec les lois locales, provinciales ou fédérales.
Renseignez-vous à votre bureau de recyclage local pour les règles de recyclage.
Avis sur la batterie Lithium
L’unité contient une batterie Lithium interne qui procure du pouvoir à l’horloge interne de l’unité et
au système d’opération.
Assurez-vous de considérer la batterie Lithium lorsque vous disposer de l’unité. Disposez de la
batterie Lithium en accord avec les lois locales, provinciales ou fédérales. Renseignez-vous à votre
bureau de recyclage local pour les règles de recyclage.
Safety Notices
Before you access any components located inside the unit, remove the power cable and wait until
all the status LEDs turn off.
Only qualified service personnel are to access the inside of the unit.
An AC power cord is provided with a grounded attachment plug for the external power supply. To
avoid electrical shock, always use the AC power cord and plug with a properly grounded outlet
(connected to earth).
To maintain safety compliance, ensure the AC power cord has the appropriate safety approvals for
the country in which the equipment is to be installed. For North America, the AC power cord must
be a UL listed SJT NEMA 5-15 equivalent or better.
When connected to an outdoor camera, the screen of the camera’s coaxial cable must to be
properly grounded (connected to earth). Cable distribution systems are subject to the National
Electrical Code (NEC) in the United States and the Canadian Electrical Code (CEC) in Canada.

8724 V Tribrid NVR Installation Guide 8
Mandatory Regulations
Avis de sécurité
Avant d’accéder aux composantes internes de l’unité, vous devez enlever le câble de pouvoir et
attendre que toutes les lumières d’état (‘STATUS LED’) de l’unité soient éteintes.
Seulement le personnel de service qualifié a le droit d’accéder l’intérieur de l’unité.
Le câble de pouvoir AC est fournie avec un câble de mise à terre pour le bloc d’alimentation
électrique. Pour éviter tout choc, utilisez toujours le câble de pouvoir AC relié avec la prise de
courant adéquate (contenant une mise à terre).
Pour maintenir votre conformité de sécurité, assurez-vous que le câble de pouvoir AC a obtenu les
approbations de sécurité applicables pour le pays ou l’installation est faites. Pour l’Amérique du
Nord, le câble de pouvoir AC doit avoir une certification UL SJT NEMA 5-15, équivalente ou
meilleur.
Lorsque relié à une caméra installée à l’extérieur, l’enveloppe du câble coaxial de la camera doit
être mise à terre de façon adéquate. Les systèmes de distribution câblés sont sujet au code
électrique National (NEC) au États-Unis et au code électrique Canadien (CEC) au Canada.
Fuse
CAUTION: Double pole / neutral fusing.
Fusible
ATTENTION : c’est une fusible à double pôle.
Ground Connection
Install a protective earth conductor if the equipment is connected to a telecommunication network
or a cable distribution system. There is a grounding stud on the back of the unit. The grounding
method is described in “Ground Connection” on page 28.
Connection de mise à terre
Installez un câble de mise à terre si l’unité est reliée à un réseau de communication ou un système
de distribution câblé. Il y a un goujon de mise à terre à l’arrière de l’unité. La méthode de mise à
terre est décrite à la section « Ground Connection » à la page 28.
Installation Location
It is recommended that the unit is installed in a restricted access location. If not possible, the unit
may be installed in a non-restricted location but it MUST be mounted so that the back of the unit
(where cables are routed) is only accessible from a restricted access location.
Endroit ou l’installation est permise
On recommande que l’unité soit installée dans un endroit à accès restreint.
Si cela n’est pas possible, l’unité peut être installé dans un endroit à accès non restreint
seulement si elle est installée de façon à ce que le derrière de l’unité (ou les câbles sont
dirigés) ne soit pas accessible.

8724 V Tribrid NVR Installation Guide 9
Mandatory Regulations
Anti-Static Precautions
Ensure proper use of an anti-static guard during installation to avoid damage to the unit from
electrostatic discharge.
Servicing Notice
The procedures contained in this publication outline how to install or service components located
inside the unit, requiring the removal of the cover. Installation and maintenance procedures
requiring internal unit access are to be performed by qualified service personnel only.
Shipping Notice
Shipment of the unit and components may expose the unit to temperature extremes. We
recommend you allow the unit to return to room temperature prior to operation.
Model Definition Information
The Certification Regulatory Model is HNVR HV SERIES. The model information is outlined in the
following table.
Certification Regulatory Model Includes the following NVRs
HNVR HV series • 8724V

8724 V Tribrid NVR Installation Guide 10
Chapter 2
Feature Overview
The March Networks 8724 V Tribrid NVR is a secure and scalable recording platform able to support
analog, HDoC (High Definition over Coax), and PoE (Power over Ethernet) cameras. These
recorders offer outstanding video compression and storage. The recorders are managed using the
Command video management software suite and configured using the Visual Intelligence
Administrator Console software application.
For more information on Command and the Administrator Console, see the documentation
available from the March Networks Partner Portal website.
This section of the installation guide contains the following information:
• “Key Features” on page 11
• “Specifications” on page 13
• “Video Inputs - HDoC and PoE” on page 14
• “Video Capture Rates” on page 16
• “HDoC Modules” on page 16
• “PoE Modules” on page 17
• “Status LEDs” on page 18
• “QR Code” on page 19
• “Two External USB Ports” on page 20
• “Main Circuit Board” on page 21
• “Alarm and Switch Terminals” on page 22
• “RS-232 Interface” on page 23
• “Audio Terminals” on page 24
• “HD Monitor Output” on page 25
• “Ethernet Network Port” on page 26
• “Two Internal USB Ports” on page 26
• “LAN USB Adapter” on page 26
• “Power Supply and Connection” on page 27
• “Ground Connection” on page 28
• “Cable Routing” on page 29
• “Hard Drives” on page 30
• “NiCd Battery Pack and Lithium Battery” on page 31

8724 V Tribrid NVR Installation Guide 11
Feature Overview
Key Features
The following table shows the supported configurations for the 8724 V. The configurations offered
support up to 24 cameras in increments of 8 cameras per module (each module is either PoE or
HDoC), with various hard drive capacities.
Configuration Options
Internal Storage Options
For each of the above configurations, you can choose one or two hard drives and choose from
various individual hard drive capacities.
Features
Some of the key features and benefits of these recorders include:
• Video compression:
- HDoC or analog cameras — H.264 with multi-level encoding
- IP cameras — camera dependent
• HDoC video inputs support the following standards:
- AHD (Analog High Definition)
- HD-TVI (High Definition - Transport Video Interface)
- HD-CVI (High Definition - Composite Video Interface)
- Standard Definition analog
• Two alarm inputs, one switch, plus two mono audio inputs and one mono audio output, for
enhanced audio/video security coverage.
• High-capacity internal storage with offset disk mirroring for added reliability. One or two
internal hard drives can be installed in each recorder.
• Internal back-up battery for power brown-out protection.
• Advanced networking features for unlimited scalability and dependable remote access.
• Advanced health management features for centralized support and maximum up-time.
• Peripheral connectors are kept secure inside the unit, so that only those with access to the
keyed entry can connect or disconnect cameras and other peripherals from the unit.
• QR code (front of recorder). Use the free GURU smartphone app to scan the recorder’s QR
code for instant product information.
Total Cameras HD over Coax Modules PoE Modules
801
10
16
02
20
11
24
03
30
21
12

8724 V Tribrid NVR Installation Guide 12
Feature Overview
Packaging/Shipment Contents
The following items are included in each system shipment, and should be located/verified before
installation begins:
• Video recorder
• AC power cord and power adapter
• LAN USB adapter
• Wall-mounting bracket
• Software DVD — The software can also be downloaded from the March Networks Partner Portal
website.
• Technical publications — Included with the software, or you can also download hardware and
software technical publications from the March Networks Partner Portal website.
Installation and Maintenance Warning
The procedures contained in this guide outline how to install or service components located inside
the unit, requiring the removal of the cover. Installation and maintenance procedures requiring
internal unit access are to be performed by qualified service personnel only.
When working inside the unit, ensure you take anti-static precautions.
Any attempt to service components of the recorder that are not considered field replaceable will
invalidate your warranty. The list of field serviceable parts includes:
• Base unit (without hard drives or modules)
• 8 port PoE module
• 8 port HDoC (High Definition over Coax) module
• Hard drives
• Main/PoE power supply module
• Back-up batteries
• Fans (2 in unit)
Do not power up or operate the unit with the cover removed. The cover ensures the safe operation
of the unit. Operating the unit without the cover can expose you to live electric current and can
cause the hard drives to overheat.
Related User Guides
Additional user guides related to the 8724 V Tribrid NVR and the software used to configure it are
available in PDF format from the March Networks Partner Portal website. If you cannot access the
Partner Portal, contact your March Networks representative.
Related guides include:
• 8724 V Tribrid NVR - HDoC Module User Guide
• Discovery Browser User Guide
• Administrator Console User Guide
• Command Enterprise and Client User Guide
• Command Professional and Client User Guide

8724 V Tribrid NVR Installation Guide 13
Feature Overview
Specifications
This section contains the dimensions, weight, temperature ranges, and power ratings of the unit.
Dimensions of the Recorder Unit
Weight
Operating and Storage Temperature
• Operating temperature: 41 to 104°Fahrenheit / 5 to 40°Celsius
• Storage temperature: -40 to 158°Fahrenheit / -40 to 70°Celsius
WARNING: The recorder must be mounted in accordance with the mounting guidelines in this
publication to ensure the unit remains within the recommended operating
temperature range. For more information, see “Mounting the Recorder” on page 34.
Power Ratings
The recorder has an external power supply. The following values are for the base unit, without
cameras connected.
• Power input: 100-240 volts AC input (auto-sensing)
• Current rating: 1.7 A typical
• Frequency range: 50-60 Hz
• Power consumption: 20 W typical, 60 W maximum
Component Pounds Kilograms
Base Unit
(without hard drives, PoE modules, or HDoC modules)
21.3 lbs 10 kg
One hard drive 1.5 lbs 0.7 kg
One PoE module 0.5 lbs 0.2 kg
One HDoC module 0.8 lbs 0.36 kg
17.7 inches / 45 centimeters
19.7 inches /
6.9 inches /
50 centimeters
17.5 centimeters

8724 V Tribrid NVR Installation Guide 14
Feature Overview
Video Inputs - HDoC and PoE
Depending on the configuration of your unit, there are 8, 16, or 24 HDoC camera ports (1 to 3 HDoC
modules with 8 ports each) and there are 8 or 16 PoE ports for IP cameras (one or two PoE
modules with 8 ports each). If the unit has 24 HDoC ports, there are no PoE camera ports (see
“Configuration Options” on page 11).
The HDoC video inputs are BNC coaxial connectors that support NTSC and PAL inputs.
The HDoC inputs support three HD standards, as well as traditional non-HD analog cameras:
• AHD (Analog High Definition)
• HD-TVI (High Definition - Transport Video Interface)
• HD-CVI (High Definition - Composite Video Interface)
• Standard Definition analog
Video termination is controlled through the Visual Intelligence software. You can use the March
Networks Administrator Console application to view and modify the analog video termination.
For more information, see the Administrator Console User Manual or online Help.
8 HDoC video inputs
8 PoE video inputs
(Slot alternatively has
(Slot alternatively has
8 PoE inputs)
8 HDoC inputs)
Video Inputs in unit Video Inputs isolated view
Slot 1
Slot 2
Slot 3
8 PoE video inputs
(Slot alternatively has
8 HDoC inputs)

8724 V Tribrid NVR Installation Guide 15
Feature Overview
Video Module Location and Numbering
The slots for the video modules (PoE or HDoC) are numbered from the bottom of the unit, so that
slot 1 is at the bottom, slot 2 in the middle, and slot 3 at the top. Either module can be installed in
any of the 3 slots.
The numbering for the inputs on the PoE module (when the module is installed in a slot and the unit
is correctly mounted) is as follows:
The numbering for the inputs on the HDoC module (when the module is installed in a slot and the
unit is correctly mounted) is as follows:
Input 1
Input 2
Input 3
Input 4
Input 5
Input 6
Input 7
Input 8
Bottom of unit
Top of unit
PoE module
Input 1
Input 2
Input 3
Input 4
Input 5
Input 6
Input 7
Input 8
Bottom of unit
Top of unit
HDoC module

8724 V Tribrid NVR Installation Guide 16
Feature Overview
Video Capture Rates
This section details the video inputs and associated video capture rates.
HDoC Cameras
The maximum supported resolution for HDoC cameras is 1080p.
The HDoC cameras have a recommended maximum of 30 FPS per channel.
Non-HD Analog Cameras
Resolution — 8724 V models with 8 analog cameras support the following resolutions for analog cameras:
• 4CIF — 704 x 480 (NTSC) or 704 x 576 (PAL)
• 2CIF — 704 x 240 (NTSC) or 704 x 288 (PAL)
• CIF — 352 x 240 (NTSC) or 352 x 288 (PAL)
FPS Values — The FPS (frames per second) values are across all video inputs. Each NTSC camera
input supports up to 30 FPS and each PAL camera input up to 25 FPS.
• NTSC: 30 FPS per channel (all 8 channels) = 240 FPS at 4CIF
• PAL: 25 FPS per channel (all 8 channels) = 200 FPS at 4CIF
IP Cameras
The IP camera input capture rate is dependent on the resolution and quality of the images
captured.
The IP cameras have a recommended maximum of 30 FPS per channel at 4CIF.
HDoC Modules
Before you can use an HDoC module, you must provision it and manually add its channels to the
8724 V Tribrid NVR using the Discovery Browser software application (accessible from the
Administrator Console software).
The HDoC modules are configured by default with a generic static IP address. It is mandatory that
you provision the HDoC modules by changing the IP address of your HDoC modules so that they
are in the same subnet as the 8724 V Tribrid NVR’s camera interface IP address.
The procedure for this and for adding the High Definition and analog video channels from the HDoC
module to the 8724 V Tribrid NVR are all described in the 8724 V Tribrid NVR - HDoC Module User
Guide, available from the March Networks Partner Portal website.
HDoC Camera Power
The HDoC camera module includes terminal blocks that provide power to connected cameras.
• Per Camera Input — 5 W per camera input, 10 W per camera input pair.
Input pairs are:
• 1 & 2
• 3 & 4
• 5 & 6
• 7 & 8
• Per Module — Maximum 40 W per HDoC module.

8724 V Tribrid NVR Installation Guide 17
Feature Overview
PoE Modules
Inside the unit, there are slots available for PoE modules so that the recorder can contain 8, 16, or
24 PoE (Power Over Ethernet) ports for IP cameras (3 available PoE modules with 8 ports each). If
the unit has 24 PoE ports, there are no HDoC camera ports. The connections are all found inside the
unit (see “Video Inputs - HDoC and PoE” on page 14).
Each PoE module has eight RJ-45 connectors with LEDs to indicate the status of the connection.
They each provide a 10/100 BaseT auto-negotiated Ethernet connection on a standard network
Pinout.
LEDs for the PoE Ethernet Ports
Each Ethernet port has colored LEDs that indicate the connection and activity status:
• Amber LED (on): A link is established but there is no activity.
• Amber LED (off): There is no link.
• Amber LED (blinking): A link is established and there is data activity.
• The Green LED indicates Ethernet link status.
Power Details for the 8 PoE Ethernet Ports on a PoE Module
The unit provides power to the PoE ports.
The PoE ports support the IEEE 802.3af standard and allow connectivity of devices/cameras
requiring up to 15.4 W (Class 0 or Class 3).
The 8724 V PoE module allows a maximum power budget of 64 W total.
Note: You must ensure that the combined maximum camera power consumption does not exceed
64 W at any time.
If you require a PoE camera configuration that does not meet these camera power
recommendations, please contact March Networks customer support.
Current Limits for the PoE Ethernet Ports
Each port has a current limit of 350 mA. This current limit allows the use of Class 0, 1, 2, and 3 PoE
powered devices.

8724 V Tribrid NVR Installation Guide 18
Feature Overview
Status LEDs
The colored LEDs (Light Emitting Diodes) on the front panel of the unit indicate status. Each tricolor
LED is marked to indicate which component the LED displays information about. The color of the
LED and whether the light is on solid, flashing, or off, gives you information about the recorder.
Front Panel LED Description
The following table describes the LEDs.
LED Color Description
Unit LED
The status of
the unit.
Green Solid: The unit’s software and hardware are operating correctly.
Flashing: The keyed power switch has been turned off or power has been
removed — the system is waiting for software to complete the shutdown of the
unit.
Blue Solid: The operating system is loaded but the unit’s software application is still
loading.
Flashing: The unit is booting up after the keyed power switch has been turned
on or after a software reboot.
Red The hardware watchdog timer has expired and reset the system.
Operation LED
The status of
the unit’s
operation.
Green Solid: The software in the unit is operating correctly, and the unit is powered
and running.
Flashing: The operating system is available but the software is still loading.
Blue A system-level problem (non-critical) has been reported.
Red A critical error has occurred.
Use the Administrator Console or Command Client software application to
review the health alert and determine a possible resolution.
For more information, see the Administrator Console User Manual or
Command Enterprise User Guide, available from the March Networks Partner
Portal website.
Status LEDs

8724 V Tribrid NVR Installation Guide 19
Feature Overview
Note: Information about operation and recording errors (indicated by the Operation or Recording
LED) can be retrieved using the Command Client or the Administrator Console (depending on
which software platform you are using, Command or Visual Intelligence).
For more information, see the Command Enterprise User Guide or the Administrator Console User
Manual, available from the March Networks Partner Portal.
QR Code
There is a QR code on the front of the unit, under the USB ports and the status LEDs.
Use the free GURU smartphone app to scan the QR code for instant product information, such as
serial number, troubleshooting tips, and video tutorials. You can also submit a technical support
ticket, or check product warranty status. You can download GURU from the App Store or Google
Play.
Note: The GURU app uses the QR code on the outside of the 8724 V. Any QR codes inside the unit
are intended for technical support use.
Recording LED
The status of
the unit’s
recording.
Green Actively recording as configured (the recorder may be configured to record
continuously or only configured to record when triggered by an alarm or a
schedule).
Red A system-level problem has occurred which is affecting current recording or
will affect future recording.
Off The system is starting up or is not currently configured to record.
Export LED
The status of an
export to an
external media
device.
Green Solid: Media transfer is complete.
Flashing: Media transfer is in progress.
Blue Solid: External media device detected.
Flashing:
• A request to export media clips to an external media device has been
initiated but the recorder is still logging the media. Exporting will not start
until the recorder finishes logging the media.
• Media clips are ready to be exported to the external media device but no
external device is detected.
• The external media device is full. Empty the device or insert a new one.
Red Failure of media transfer.
Off No external media device is connected or the external device is not usable.
QR code
(lower half of unit)

8724 V Tribrid NVR Installation Guide 20
Feature Overview
Two External USB Ports
There are two USB ports on the front of the unit, next to the status LEDs.
The two USB ports on the front of the unit are for connection of external peripherals.
Each port provides up to 500 mA to power peripherals with a USB cable.
The ports support USB version 2.0.
Note: The unit also has two USB ports available inside. For details, see “Two Internal USB Ports”
on page 26.
USB ports