Toa NX-100 User manual

DESCRIPTION FEATURES
NETWORK AUDIO ADAPTER
NX-100
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If there is no network delay, audio signals have only a
minimal millisecond delay.
Control data including contact and serial data can also be
transmitted along with the audio signals.
Two-way audio signal transmission is possible with a single
NX-100 unit as every unit is equipped with an audio input
and output.
The multicast-capable NX-100 allows simultaneous
transmission of audio signals to be made to multiple
locations depending on transmission method:
Unicast — up to 4 locations,
Multicast — up to 64 locations.
No audio signal degradation or loss, even when transmitting
over crowded networks such as the internet.
Greater data reliability using IP networks with the protocol's
ability to prevent data problems during transmission.
The NX-100's contact input can initiate and terminate
audio transmissions without having to use dedicated
control equipment such as a PC.
Hardware use ensures operational reliability over only
software-driven applications.
Using IP to transmit audio signals over the internet allows
low cost operation rather than dedicated lines.
The NX-100 is equipped with a DC input to allow operation
on AC as well as DC.
Software-driven operational menus enhance ease of use.
The NX-100 Network Audio Adapter can transmit high-quality
audio signals and such control data as serial data over IP
networks, such as LAN or Internet, in real time.
It is especially useful when transmitting audio signals to
remote locations, as Internet use keeps running costs lower
than the use of dedicated lines.
With the use of an optional rack-mounting bracket, it can be
mounted in an EIA Standard rack (1 unit size).
APPEARANCE AND DIMENSIONAL DIAGRAM
210
188
180
42.5
46
Rear View
Front View
Side View
Audio
Unit: mm

Specifications are subject to change without notice.
Printed in Japan (0301) 833-52-294-40 U
TOA Corporation
URL : http://www.toa.jp/
SPECIFICATIONS
Power Source
Current Consumption
Audio Input
Audio Output
Frequency Response
Distortion
Control Input
Control Output
Network I/F
Network Protocol
Audio packet
Transmission System
Operating Temperature
Operating Humidity
Finish
Dimensions
Weight
Accessory
Optional Components
24V DC (plug-in screw connector) or
AC adapter AD-246 (optional) or the equivalent
200mA (DC operation)
1 channel (isolated transformer), –58dB* to 0dB*,
balanced (MIC/LINE changeable, volume adjustable with volume control),
2kΩ, plug-in screw connector
1 channel (isolated transformer), balanced, 600Ω, plug-in screw connector
50 – 14,000Hz (when sampling frequency is 32kHz)
Under 0.3% (1kHz, when sampling frequency is 32kHz)
8 channels, no-voltage make contact input, open voltage: 12V DC,
short-circuit current: 10mA, plug-in screw connector
8 channels, open collector output, withstand voltage: 30V DC,
control current: 50mA max., plug-in screw connector
10BASE-T/100BASE-TX, Auto-Negotiation
TCP/IP, UDP, HTTP, RTP
Unicast (up to 4 simultaneous transmissions),
Multicast (up to 64 simultaneous transmissions)
0°C to +50°C (0°C to +40°C when AC adapter is in use)
Under 90% RH (no dew condensation should be produced)
Steel plate, black, 30% gloss
210 (W) ×46(H) ×188 (D)mm
1.2kg
Bracket mounting screw ×8,
CD (PC setting/operation software programe) ×1,
Power supply screw connector plug ×1,
Audio I/O screw connector plug ×2,
Control I/O screw connector plug ×2,
RS-232C connector cover ×1
Rack mounting bracket: MB-15B-BK (for rack mounting one NX-100 unit)
MB-15B-J (for rack mounting two NX-100 units)
AC adapter: AD-246
GUIDELINES ON LINE BAND, SOUND QUALITY AND DELAY TIME
NOTES:
1. The following conditions apply to the side delay time
values and required band:
(1) Line band: 1.5 Mbps ; Voice compression not used—
Voice packet size: 128 bytes
(2) Line band: 1.5 Mbps; Voice compression used—
Voice packet size : 32 bytes
(3) A voice packet size of 1,024 bytes assumed for all
but the 1.5 Mbps Line band.
2. ‘‘Voice Packet Loss Recovery’’ is a processing
function when the voice packet cannot be received
owing to communications interference.
(1) Silence: Sections without voice packets are processed
as silence.
(2) Redundancy: Enables the voice to be normally output
for continuous losses of up to 8 packets.
(3) Retransmission: Enables the voice to be normally output
for continuous losses of up to 15 seconds.
3. ‘‘Required band’’ represents the bands required for
voice transmission.
When sending other data (such as serial data), the
transmission band is separately required.
Silence 0.02 392
Redundancy 0.5 612
128 kbps
(Dedicated
line, etc.)
64 kbps
(ISDN, etc.)
Silence 2.6 34
Yes 50-3.4kHz 8 kHz
Silence 1.3 68
Redundancy 7 103
(1) For LAN and dedicated lines
Over
1.5 Mbps
No 50 -14kHz 32 kHz Silence 0.02 776
Redundancy 0.5 1188
Yes 50-14 kHz 32 kHz
Yes 50- 7kHz 1 6 kHz
Line Band Voice
Compression Audio Band Sampling
Voice Packet
Loss
Recovery
Delay
Time
(sec)
Band
Used
(kbps)
Redundancy 14 51
Over
512 kbps
(ADSL,etc.)
64 kbps
(ISDN, etc.)
Silence 2.6 34
Redundancy 14 51
Yes 50-3.4kHz 8kHz
128 kbps
(Dedicated
line, etc.)
50-7kHz 16 kHz Silence 1.3 68
50-3.4kHz 8kHz Retransmission 20 10 3
Retransmission 20 369
Silence 0.6 136
(2) For the Internet
Yes 50-14kHz 32kHz
Yes
Line Band Voice
Compression Audio Band Sampling
Voice Packet
Loss
Recovery
Delay
Time
(sec)
Band
Used
(kbps)
* 0dB = 1V
Note: When you need the AC adapter, be sure to consult your TOA dealer.