Digital Acoustics IP7-SE8 User manual

IP7™-SE8
IP Intercom/Amplifier
Reference Manual

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Table of Contents
Overview ........................................................................................1
Specifications .................................................................................2
IP7-SE8 Layout ...............................................................................3
LED Indicators ................................................................................6
Connecting Power...........................................................................7
PoE ..................................................................................................7
External Power ..................................................................................7
USB Power ........................................................................................7
Connecting a Mic and Speaker ........................................................7
Mic + and Mic - .................................................................................7
Talk .................................................................................................8
Connecting a Speaker / Transformer ..............................................8
SPKR 8Ω+ and SPKR 8Ω-....................................................................8
Speaker Configurations ......................................................................8
25/70V Speaker(s) with optional 25/70V transformer .............................8
8 Ohm Speaker(s) ...........................................................................10
Connecting Line Out or Line In .....................................................11
Line Out ......................................................................................... 11
Line In ...........................................................................................11
Connecting the Relay ....................................................................12
Connecting the Sensor ..................................................................12
Connecting an I2C Bus..................................................................12
Mounting Instructions ..................................................................13
Din Rail Mounting ............................................................................13
Surface Mounting............................................................................. 13
Setting Volume Levels ..................................................................13
Configuring ...................................................................................14
IP Configuration............................................................................... 14
Intercom Options.............................................................................14
Physical Dimensions .....................................................................15
Environmental ..............................................................................15
Troubleshooting............................................................................16
Reset to Factory Defaults .................................................................. 16
Connecting 1/8” (3.5mm) Audio Plug to the Pluggable connectors ......... 16
Reducing electrical noise in audio.......................................................16
Viewing tech support info via the USB port..........................................16
Low Level Flashing Utility.................................................................. 17
Contacting Technical Support .......................................................17
Regulatory Notices .......................................................................18
Index ............................................................................................19

Page 1
Overview
The Digital Acoustics IP7-SE8 is an IP (Internet Protocol) amplifier that
provides up to 8 watts of audio output. Additionally, the SE8 provides
2-way Intercom functionality, an output relay, sensor and 2-port
network switch. Simply connect the module to a 10/100 Ethernet
connection, configure its IP address information and communicate to a
host server PC by voice.
Standard features include:
•Talk to/from an IP7-SE8 to host PC server
•Drive one or more speakers for paging
applications
•High quality, clear transmit and playback audio
•Highly scalable and seamless expansion
•DIN rail or surface mount
•Fixed or DHCP compliant IP assignment
•Auto sensing power from 12VDC - 15VDC
•PoE (802.3af) standard
•Integrated 2-port switch
•Field upgradeable OS using internal Flash memory
The IP7-SE8 must be configured using the TalkMaster software before
being used. Please consult the configuration section of the software
manual for details.

Page 2
Specifications
Items
Specification
Hardware Protocols
TCP, UDP, SIP, RTP, ICMP, IGMP Multicast
Network Interface
10/100 Ethernet (Auto detection, Auto MDIX)
Command protocols
Proprietary
Audio Rate
64kbs
Audio Resolution
G.711 (8-bit PCM and 16-bit uLaw)
Audio Sample Rate
8K (Voice band), 22K (Background Music)
Audio Frequency
90-4kHz (Voice band) , 90-11khz (Background Music)
Internal Amplifier
8 watts @ 8 Ohms
Humidity
10~90%
Power
External Power 12-15 VDC @ 15 watts nominal.
PoE (802.3af) compliant (requires 15.4 watts from
PSE). External Power overrides PoE power
Size
3.85. x 3.59 x 1.37 in
98 mm x 91mm x 35mm

Page 3
IP7-SE8 Layout
1
2
3
4
6
7
J1
J2
J3
8
5

Page 4
Connections and Controls
Refer to the preceding pictures.
Connector
Connector / Control
Notes
1
+ Button
Volume up button
2
- Button
Volume down button
3
USB-B
Provides for low level firmware flashing
as well as viewing technical support
information. Will also power the unit for
diagnostic purposes.
4
Ext I/O
I2C expansion bus interface that can be
used for custom applications. Requires
custom firmware from Digital Acoustics
5
Ethernet 10/100
10/100 Ethernet network interface.
Supports auto negotiation and auto-MDIX
6
Port 2 10/100
Provides a 10/100 Ethernet network
connection for another device. Supports
auto negotiation and auto-MDIX
7
Aux Power
2.1mm power connector with center tip
positive. 12VDC - 15VDC @ 15 watts.
Overrides PoE power.
Warning: Connecting power to both the
2.1mm Power jack and the J1-1 and J1-2
power connectors at the same time will
damage the unit
8
DIN Rail Mounting Clip
Allows unit to be snapped on to standard
35mm DIN Rail stock

Page 5
There are three sets of pluggable DIN connectors (3.81mm centers) on
the SE8:
SE8 J1 Connector
SE8 J2 Connector
SE8 J3 Connector
Connector
Signal
Notes
J1-1
Power +
12VDC - 15VDC at 15 watts. Overrides PoE power.
Warning: Connecting power to both the 2.1mm power
jack and the J1-1 and J1-2 power connectors at the
same time will damage the unit
J1-2
Power -
Connector
Signal
Notes
J2-1
MIC +
Microphone Inputs. Pseudo differential (Actively
Balanced differential).
J2-2
MIC -
J2-3
Line Out
-10db with a 10k termination. Capable of driving head
phones. Reference to J2-4
J2-4
GND
System Ground. Same as J3-6
J2-5
TALK
Talk or Call button. Initiates a call to the configured
Server. Reference to J2-4
J2-6
SPKR 8Ω+
Floated differential output. Able to drive an 8 Ohm load
@ 8 watts or a 600 Ohm load
J2-7
SPKR 8Ω-
Connector
Signal
Notes
J3-1
NO
Isolated Dry Contact Relay output. Connect J3-2 and
either J3-1 for NO (Normally Open) or J3-3 for NC
(Normally Closed)
J3-2
COMMON
J3-3
NC
J3-4
LINE IN
Unbalanced. Reference to ground
J3-5
SENSOR
Door Sensor. Active when closed to ground or Active
when open to ground. Reference to J3-6
J3-6
GND
System Ground. Same as J2-4
J3-7
CASE
Optional connection to earth ground

Page 6
LED Indicators
Intercom LEDs
There are four LEDs present on the curved bezel on the front of the
product.
•The blue LED indicates that the IP7-SE8 has powered up.
•The three red LEDs indicate status of the unit.
LED
Description
Ready
Indicates whether the unit has connected to a Server
Link
Indicates whether the unit has a valid network Connection
Active
Indicates whether audio is being transmitted or received
LED Status Table
Description
Ready
Link
Activity
Normal operational mode. Intercom can
communicate with its Server
On
On
Off
Playing Audio
On
On
Flashing
Playing Broadcast Audio
Fast Flash
On
Flashing
Sending Audio
On
On
On
Attempting to connect to make a
connection or unit has not been
configured
Flashing
On
LAN connection is inactive. The RJ45 may
be unplugged
Flashing
Off
Unit has been detected by the Intercom
Configuration Tool
Fast Flash
On
LAN Connector LEDs
On the Ethernet 10/100 RJ-45 connector:
•The Green LED tracks to the Ready LED
•The Yellow LED tracks to the Link LED
On the Port 2 10/100 RJ-45 connector
•The Green LED tracks to network transmit activity
•The Yellow LED tracks to network receive activity

Page 7
Connecting to an Ethernet Network
The Ethernet 10/100 connector allows the unit to be attached to a
10/100 network. Port 2 10/100 allows an additional IP device to be
connected to the network without the need for an additional network
drop. The second port is not PoE capable.
•Plug a Cat5 cable into the RJ-45 connector labeled Ethernet
10/100 and connect the other end to a 10/100 switch.
•To connect a second IP device to the network, plug a Cat5 cable
in the RJ-45 connector labeled Port 2 10/100
•The Ethernet 10/100 connector supports auto “MDIX” and can
be plugged directly into a PC for diagnostic purposes.
Connecting Power
The IP7-SE8 auto senses the power source and voltage. An external
power source will always override PoE power.
PoE
Plug a Cat5 cable from an 802.3af compatible switch or injector into
the RJ-45 connector that is next to the 2.1mm Power Jack connector.
15.4 watts will be requested from PoE (802.3af compatible) Power
Source Equipment (PSE).
External Power
•The 2.1mm Power Jack (center tip positive) accepts 12VDC. The
J1-1(+) and J1-2(-) connector accepts 12VDC - 15VDC
•DO NOT supply power to both the 2.1mm Power Jack and the
J1-1 and J1-2
USB Power
The USB connector can be used to power up the unit for diagnostics or
low level firmware flashing. Plug a USB cable from a PC into the USB-B
connector. The unit will power up, but will not be able to be used for
audio operations.
Connecting a Mic and Speaker
When wiring microphone connections, use a shielded twisted multi-
conductor such as Belden 9462 or for long runs, Belden 5301.
Mic + and Mic -
The IP7-SE8 can accept electret or dynamic microphones. A weather
proof speaker can also be used as a microphone.