March Networks 8704 S User manual

March Networks
8704 S Hybrid NVR (Gen 2)
Installation Guide

Copyright © 2021. 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
38376 Rev 4.1, June 2021

8704 S Hybrid NVR (Gen 2) 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........................................................................................................... 6
Avis sur le bloc de batterie NiCd.................................................................................... 6
Avis sur la batterie Lithium............................................................................................. 7
Safety Notice.......................................................................................................................... 7
Avis de sécurité...................................................................................................................... 7
Ground Connection ............................................................................................................ 8
Connexion à la terre............................................................................................................8
Anti-Static Precautions .........................................................................................................8
Servicing Notice..................................................................................................................... 8
Shipping Notice ..................................................................................................................... 8
Model Definition Information................................................................................................ 8
Chapter 2: Feature Overview.......................................................9
Key Features......................................................................................................................... 10
Packaging/Shipment Contents........................................................................................... 11
Specifications....................................................................................................................... 12
Dimensions ....................................................................................................................... 12
Weight ............................................................................................................................... 12
Operating and Storage Temperature............................................................................... 12
Power Ratings ...................................................................................................................12
Video Inputs ......................................................................................................................... 13
Video Capture Rates............................................................................................................ 14
Analog Camera Video Inputs ........................................................................................... 14
FPS Values for Analog Camera Inputs......................................................................... 14
IP Camera Video Inputs.................................................................................................... 14

8704 S Hybrid NVR (Gen 2) Installation Guide 4
Contents
Front Panel LEDs ..................................................................................................................15
Front Panel LED Description.........................................................................................15
RS-232 Interface ...................................................................................................................17
RS-232 Interface ................................................................................................................17
Alarm and Switch Terminals ................................................................................................18
Connecting an Alarm or Switch Device............................................................................18
Audio Terminals ....................................................................................................................19
Audio Input ........................................................................................................................19
Audio Output.....................................................................................................................19
Ethernet Ports and USB Ports..............................................................................................20
Ethernet Ports and LEDs...................................................................................................20
Two Rear USB Ports .........................................................................................................20
Power Connection ................................................................................................................21
Power Connection ............................................................................................................21
Power Supply.....................................................................................................................21
Ground Connection ..............................................................................................................22
Grounding Method.........................................................................................................22
Hard Drives............................................................................................................................23
Hard Drive Details..............................................................................................................23
NiCd Battery Pack and Lithium Battery..............................................................................24
NiCd Battery Pack .............................................................................................................24
Lithium Battery..................................................................................................................24
Chapter 3: Unit Setup.................................................................25
Mounting the Recorder ........................................................................................................25
Wall-Mounting.......................................................................................................................26
Desk-Mounting......................................................................................................................28
Installing Hard Drives ...........................................................................................................29
Installation Requirements..............................................................................................29

8704 S Hybrid NVR (Gen 2) 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
Supplier’s Declaration of Conformity
Product Name: Hybrid NVR
Product Model: HNVR LS
Company Name: March Networks Inc.
The Pinnacle Building
3455 Peachtree Road North East, Suite 500
Atlanta, Georgia 30326
1 800 563 5564
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.

8704 S Hybrid NVR (Gen 2) 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.
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.

8704 S Hybrid NVR (Gen 2) Installation Guide 7
Mandatory Regulations
• 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 Notice
Before you access any components located inside the unit, remove the DC power cable and wait until
all the status LEDs turn off. Only qualified service personnel should 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.
Do not insert any foreign objects into the fan, vents, ports, or other opening in the unit.
Avis de sécurité
Avant d'accéder aux composantes internes de l’unité, retirez le câble d'alimentation DC 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.

8704 S Hybrid NVR (Gen 2) Installation Guide 8
Mandatory Regulations
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.
N’insérez pas d’objets étrangers dans le ventilateur, les évents, les ports ou toute autre ouverture
dans l’unité.
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 22.
Connexion à la terre
Installez un conducteur de terre de protection si l'équipement est connecté à un réseau de
télécommunication ou à un système de distribution par câble. Il y a un goujon de mise à la terre à
l'arrière de l'unité. La méthode de mise à la terre est décrite dans « Ground Connection » à la
page 22.
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 HNVR LS is the regulatory model for the 8704 S Hybrid NVR.
Certification Regulatory Model Includes the following NVR
HNVR LS 8704 S

8704 S Hybrid NVR (Gen 2) Installation Guide 9
Chapter 2
Feature Overview
The 8704 S (Generation 2) Network Video Recorder is a scalable recording platform able to support
both analog and high-resolution IP cameras. This Gen 2 model includes three Ethernet ports: it
includes a camera port, and both a primary network port and a redundant network port, to
safeguard network communication.
This NVR offers outstanding video compression and storage, and can be managed using either the
March Networks Command or the Visual Intelligence video management platforms.
Note: You should familiarize yourself with the differences between the platforms prior to
deploying the recorders. For more information, see the documentation available from the March
Networks Partner Portal.
This section of the installation guide contains the following information:
• “Key Features” on page 10
• “Packaging/Shipment Contents” on page 11
• “Specifications” on page 12
• “Video Inputs” on page 13
• “Video Capture Rates” on page 14
• “Front Panel LEDs” on page 15
• “RS-232 Interface” on page 17
• “Alarm and Switch Terminals” on page 18
• “Audio Terminals” on page 19
• “Ethernet Ports and USB Ports” on page 20
• “Power Connection” on page 21
• “Ground Connection” on page 22
• “Hard Drives” on page 23
• “NiCd Battery Pack and Lithium Battery” on page 24

8704 S Hybrid NVR (Gen 2) Installation Guide 10
Feature Overview
Key Features
The following table shows the key features.
Some of the key features and benefits include:
• Video compression:
- Analog cameras — H.264 with multi-level encoding
- IP cameras — H.264, MPEG4, JPEG
• 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.
Feature 8704 S Generation 2 Model
Camera Capacity
(total / analog / IP)
4 total cameras = max. 4 analog / max. 4 IP
Concurrent
Frame Rates
30 FPS per channel at 4CIF
IP Camera Bandwidth 4 channels at 3 mbps = 12 mbps total
Internal Storage Two 2.5 inch drives
Ethernet Ports
Generation 2 of the 8704 S model has three Ethernet ports: one camera port
and two network ports: primary and redundant. (The first generation 8704 S
model only had two Ethernet ports: one camera port and one network port.)
For 8704 S Generation 2, 0/0 Network is the primary network port and
0/2 Network is the redundant network port. The 0/1 Camera port is for IP
camera networks.
See “Ethernet Ports and USB Ports” on page 20 for details.

8704 S Hybrid NVR (Gen 2) Installation Guide 11
Feature Overview
Packaging/Shipment Contents
The following items are included in each system shipment, and should be located/verified before
installation begins:
• Network video recorder
• AC power cord and power adapter
• Terminal blocks
• Hard drive mounting screws - Four (4) screws per drive. If hard drives are installed, screws are
in use.
• Data and power cables for the hard drives
• Software DVD — The software can also be downloaded from the March Networks Partner
Portal.
• Technical publications — Included on the software DVD, or you can also download hardware
and software technical publications from the March Networks Partner Portal.
Note: A Wall-Mounting Kit and / or a Tamper Proof Enclosure (to prevent unauthorized access to
the inside of the NVR) can be purchased separately if required.
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:
• Hard drives, caddies, and cables
• Back-up batteries
• Fans
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.
ATTENTION : Les procédures contenues dans ce guide décrivent comment installer ou réparer les
composants situés à l'intérieur de l'unité, nécessitant le retrait du capot. Les procédures d'installation et
de maintenance nécessitant un accès interne à l'unité doivent être effectuées uniquement par du
personnel de maintenance qualifié.
Lorsque vous travaillez à l'intérieur de l'appareil, assurez-vous de prendre des précautions antistatiques.
Toute tentative de réparation de composants de l'enregistreur qui ne sont pas considérés comme
remplaçables sur site annulera votre garantie. La liste des pièces réparables sur site comprend:
• Disques durs, caddies, et câbles
• Batteries de sauvegarde
• Ventilateurs
N'allumez pas et ne faites pas fonctionner l'appareil avec le couvercle retiré. Le couvercle garantit le
fonctionnement sûr de l'unité. Faire fonctionner l'appareil sans le couvercle peut vous exposer à un
courant électrique sous tension et entraîner une surchauffe des disques durs.

8704 S Hybrid NVR (Gen 2) Installation Guide 12
Feature Overview
Specifications
This section contains the dimensions, weight, temperature ranges, and power ratings of the unit.
Dimensions
Weight
• Without hard drive: 3.2 pounds / 1.5 kilograms
• Each hard drive: Approximately 0.25 pounds / 0.1 kilograms
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 25.
ATTENTION : L'enregistreur doit être monté conformément aux directives de montage de cette publication
pour garantir que l'unité reste dans la plage de températures de fonctionnement recommandée. Pour plus
d'informations, voir « Mounting the Recorder » à la page 25.
Power Ratings
The recorder has an external power supply.
• Power input: 100-240 volts AC input (auto-sensing)
• Current rating: 1.7 A
• Frequency range: 50-60 Hz
• Power consumption: 15 W typical, 20 W maximum
8.3 inches / 21.1 centimeters
5.0 inches / 12.7 centimeters
3.2 inches / 8.1 centimeters

8704 S Hybrid NVR (Gen 2) Installation Guide 13
Feature Overview
Video Inputs
There are 4 analog video inputs on the back of the unit. The IP cameras can connect to the recorder
through a camera network on the camera Ethernet port (see “Ethernet Ports and USB Ports” on
page 20). IP cameras are connected using a CAT5e cable or a cable of higher performance, such as
CAT6 cable.
The number of IP cameras the unit supports depends on the number of analog cameras you are
using.
The 8704 S has 4 hybrid channels which can be used to include any combination of 0-4 analog
cameras and 0-4 IP cameras, as long as the total number of cameras is 4.
For example, if no analog cameras are in use, the 8704 model supports up to 4 IP video cameras. If no
IP cameras are in use, it supports up to 4 analog cameras. You can combine IP and analog cameras
(for example, 2 IP cameras and 2 analog cameras) as long as they add up to a total of 4 cameras.
Video Inputs on BNC Coaxial Connector
The analog video inputs are BNC coaxial connectors that support NTSC and PAL inputs.
Video Termination
Video termination for the 8704 S 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.
Video Inputs 1-4

8704 S Hybrid NVR (Gen 2) Installation Guide 14
Feature Overview
Video Capture Rates
This section details the video inputs and associated video capture rates.
Analog Camera Video Inputs
The 8704 S supports 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 for Analog Camera Inputs
The FPS (frames per second) values are across all video inputs.
•NTSC: 30 FPS per channel (all 4 channels) = 120 FPS at 4CIF
•PAL: 25 FPS per channel (all 4 channels) = 100 FPS at 4CIF
IP Camera Video Inputs
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.
The 8704 S provides a capture rate of up to 3 mbps and 30 FPS per attached IP camera for 4
cameras (a total of 12 mbps of inbound traffic from 4 IP cameras).
• 4 channels at 3 mbps = 12 mbps

8704 S Hybrid NVR (Gen 2) Installation Guide 15
Feature Overview
Front Panel 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 Command Client or Administrator Console software application to
review the health alert and determine a possible resolution.
For more information, see the Command Enterprise User Guide or the
Administrator Console User Manual, available from the March Networks
Partner Portal website.
Front Panel LEDs

8704 S Hybrid NVR (Gen 2) Installation Guide 16
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.
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.

8704 S Hybrid NVR (Gen 2) Installation Guide 17
Feature Overview
RS-232 Interface
There is an RS-232 interface on the back of the unit.
Pinout
RS-232 Interface
The RS-232 interface allows you to provide text capture, with the following pins:
You can also use this to control a PTZ camera with an RS-232 to RS-485 converter.
Relay RS232 Audio Out
NC C NO Rx G G 1
A1 G A2 Tx 1 G 2
Alarms Audio In
Pin
Rx G Tx
Definition
Input Ground Output
RS-232 interface

8704 S Hybrid NVR (Gen 2) Installation Guide 18
Feature Overview
Alarm and Switch Terminals
There are alarm and switch terminals on the back of the unit. Alarm and switch devices
can connect to these.
Pinout
Connecting an Alarm or Switch Device
Using the following procedure, you can connect alarm and switch devices to the terminals at the
back of the unit.
Note: End-of-Line (EOL) resistors are not supported. Only Open and Closed states are monitored.
To connect an alarm or switch device
1 Ensure the unit is powered down and the LEDs at the front of the unit are off.
2 Locate the appropriate alarm or switch terminals (refer to the graphic above).
3 Attach the device to the appropriate terminals:
For alarm devices:
• Use the G (ground) terminal when connecting the common wire.
Note: The alarm input is open/short, dry contact only.
For switch devices:
• Connect the switch device common wire to the common (C) terminal.
Note: The maximum voltage for a connected switch device is 60 volts DC input at 1 Amp
or 60 Watts. Anything above 60 Watts must be handled by a second-stage relay control
circuit, approved and validated by certified electrician.
• Depending on the switch’s default state, connect the normally-open or normally-closed
wire to the normally-open (NO) or normally-closed (NC) terminal, respectively.
4 After you connect the alarm and/or switch devices, you can turn on the unit.
Relay RS232 Audio Out
NC C NO Rx G G 1
A1 G A2 Tx 1 G 2
Alarms Audio In
Alarm and switch terminals

8704 S Hybrid NVR (Gen 2) Installation Guide 19
Feature Overview
Audio Terminals
Audio in and out terminals are available on the back of the unit. Terminals provide line level audio input/output.
Pinout
Audio Input
Connect an audio cable to the Audio In terminal block. Use the audio cable to connect an audio
input device, such as a microphone, to the unit. Audio In pin 1 and 2 are the signals for audio input
channel 1 and 2 respectively. Connect the return to the “G” between the two audio inputs.
If you are connecting a microphone to the unit, you must use a pre-amplifier to amplify the signal to
line level. Place the pre-amplifier close to the microphone for best results.
Input specification: unbalanced, 10 kΩ, 1Vp-p (line level)
Audio Output
Connect an audio cable to the Audio Out terminal block. Use the audio cable to connect an
amplified audio output device, such as an intercom or speaker, to the unit. Ensure that the audio
output device (whether intercom or speaker) includes a built-in amplifier.
Audio Out pin 1 is the signal for audio output channel 1. Connect the return to the “G” beside the
audio output.
Output specification: unbalanced, 600 Ω, 1Vp-p (line level)
Relay RS232 Audio Out
NC C NO Rx G G 1
A1 G A2 Tx 1 G 2
Alarms Audio In
Audio terminals

8704 S Hybrid NVR (Gen 2) Installation Guide 20
Feature Overview
Ethernet Ports and USB Ports
The unit has three Ethernet ports and two USB ports on the back.
Ethernet Ports and LEDs
The gigabit Ethernet ports are on RJ-45 connectors, with LEDs to indicate the status of the
connection. They each provide a 10/100/1000 BaseT auto-negotiated Ethernet connection on a
standard network pinout.
T here are three Ethernet ports. The 0/1 Camera port is for IP camera networks.
The 0/0 Network is the primary network port and the 0/2 Network is redundant.
All network communication defaults over the primary network port. If the connection on the
primary port is lost, network communication switches to the redundant port and a health alert is
sent.
While using the redundant network port, the recorder monitors the primary port. When the primary
port becomes available again, the system reverts back to the primary port.
Important: If managing this recorder with Command Enterprise, when setting up the Network tab
of the Command Enterprise Console, you must ensure that the primary network address is listed
first in the Published Addresses list (at the top of the list). For more information, see the Command
Enterprise Installation Guide, available from the March Networks Partner Portal website.
Ethernet port LEDs
Each Ethernet port has colored LEDs that indicate the connection status.
• Amber LED (on): A link is established but there is no activity.
• Amber LED (off): There is no link or there is activity on the established link.
• Green LED (on): A 1000 BaseT link is negotiated on the port.
• Green LED (off): A 10/100 BaseT link is negotiated on the port.
Two Rear USB Ports
Two USB ports provide connections for external peripherals, provide up to 0.5 A per
port to power peripherals with a USB cable, and support USB 2.0.
USB Ports 1 and 2
2 Ethernet Ports and LEDs
3 Ethernet Ports and LEDs (1 camera, 2 network)