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NX-300 Network Audio Adapter

NX-300 W

The TOA NX-300 is a network audio adapter that utilizes packet audio technology (*1). Connecting the NX-300 to a network (LAN or WAN) permits high-quality audio or contact control signals to be transmitted in real time. As existing networks can be used, systems can be constructed with no need for the installation of new wiring. Broadcasts using audio files and up to 8 different levels of priority control can also be made, and provided by stations, factories or other central facilities to individual bases. It can be mounted in an EIA equipment rack (1U size) with the use of an optional rack mounting bracket or installed on a wall using an optional wall mounting bracket. (*1) TOA's unique technology which makes it possible to transmit high-quality audio signals in real time over an IP network. (*1) TOA's unique technology which makes it possible to transmit high-quality audio signals in real time over an IP network.

Power Source Supplied from an external 24 V DC (21.6 - 26.4 V) power supply or
AC adapter AD-246 (option) or the equivalent
Power/Current Consumption 10 W (AC operation)
Audio Input 2 channels
Rated input: -20 dB (*2) (LINE)/-60 dB (*2) (MIC)
PAD function (-16 dB (*2))
Audio Output 2 channels
Rated output: 0 dB (*2) (unbalanced input)/-2 dB (*2) (balanced input)
Frequency Response 50 Hz - 18 kHz
(48 kHz sampling frequency
Distortion 0.2 % or less (1 kHz
Signal to Noise Ratio 73 dB or more (LINE signal level
Separation 70 dB or more (1 kHz
Audio Format WAV file
Number of Storable Audio Files Max. 8
Storable Time of Audio File Max. 2 min. per audio file
(16 kHz sampling frequency
Control Input 8 channels
Control Input Failure Detection Section Connection resistance to make the function inactive: 20 kΩ ±5 %%%
Connection resistance to make the function active: 10 kΩ ±5 %%%
Connector cable: Twisted pair cable (shielded type is recommended)
Maximum cable distance: 10 m
Control Output 8 channels
2 channels
Network Section Network I/F: 10BASE-T/100BASE-TX
Network protocol: TCP
Audio packet transmission system: Unicast (Up to 16 simultaneous transmissions)
Connector: RJ45 connector
Voice sampling frequency: 8 kHz
(controllable on the software)
Quantifying bit number: 16 bits
Voice encoding method: PCM
Voice packet loss recovery: Silence insertion
Audio delay time: Min. 20 ms
Operation 2 channels
Indicator 2 channels
LNK/ACT (green)
Setting Switch Reset
SD Section For log storage (Max. 10000)
Media: SD/SDHC card (Max. 32 GB) (*3)
File system: FAT16
※ Use only SD memory cards rated at 100mA current consumption or less.
※ No SD card provided.
Installation Method Rack
Operating Temperature -10 ℃ to +50 ℃ (14 ゜F to 122 ゜F)
(0 ℃ to +40 ℃ (32 ゜F to 104 ゜F) when AC adapter is in use)
Operating Humidity 90 %RH or less (no condensation)
Finish Pre-coated steel plate
Dimensions 210 (W) × 44.3 (H) × 258 (D) mm (8.27 x 1.74" x 10.16)
Weight 1.7 kg (3.75 lb)
Accessory Removable terminal plug (3 pins) …1
Option Rack mounting bracket: MB-15B-BK (for rack mounting one NX-300 unit)
MB-15B-J (for rack mounting two NX-300 units)
Wall mounting bracket: YC-850
AC adapter: AD-246
Notes: The NX-300 cannot be connected to other equipment using the MB-15B-J bracket for rack mounting.
When you need the AC adapter be sure to consult your TOA dealer.
(*1) TOA's unique technology which makes it possible to transmit high-quality audio signals in real time over on IP network.
(*2) 0 dB = 1 V
(*3) Not compatible with SDXC memory cards.
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