NX-300 Network Audio Adapter Black

Description

TOA NX-300

Product Description
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.

Product Specifications
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) 310 mA (DC operation)

Audio Input
2 channels balanced (transformer isolated)/unbalanced changeable 2 kΩ LINE/MIC changeable volume adjustable
Rated input: -20 dB (*2) (LINE)/-60 dB (*2) (MIC)
PAD function (-16 dB (*2)) removable terminal block (6 pins)

Audio Output
2 channels balanced (transformer isolated) 600 Ω or less
Rated output: 0 dB (*2) (unbalanced input)/-2 dB (*2) (balanced input) removable terminal block (6 pins)

Frequency Response
50 Hz – 18 kHz
(48 kHz sampling frequency PCM 0 to -6 dB deviation referred to 1 kHz)

Distortion
0.2 % or less (1 kHz LINE signal level 48 kHz sampling frequency PCM BPF)

Signal to Noise Ratio
73 dB or more (LINE signal level at rated output)

Separation
70 dB or more (1 kHz LINE signal level BPF)

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 sub-band-ADPCM monaural operation)

Control Input
8 channels no-voltage make contact input open voltage: 24 V DC short-circuit current: 2 mA or less removable terminal block (9 pins) (Only Channel 8 equipped with failure detection.)

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 open collector output (polarized) withstand voltage: 30 V DC control current: 50 mA max. removable terminal block (9 pins)
2 channels relay output (non-polar) withstand voltage: 30 V DC control current: 500 mA max. removable terminal block (4 pins)

Network Section
Network I/F: 10BASE-T/100BASE-TX Full-duplex/Half-duplex Auto-negotiation
Network protocol: TCP UDP ARP HTTP RTP IGMP FTP NTP
Audio packet transmission system: Unicast (Up to 16 simultaneous transmissions) Multicast (Up to 64 simultaneous transmissions)
Connector: RJ45 connector
Voice sampling frequency: 8 kHz 16 kHz 32 kHz 48 kHz
(controllable on the software)
Quantifying bit number: 16 bits
Voice encoding method: PCM Sub-band ADPCM (controllable on the software)
Voice packet loss recovery: Silence insertion
Audio delay time: Min. 20 ms

Operation
2 channels Audio input level control (Convertible to Audio output level control)

Indicator
2 channels audio input SIGNAL (green)/PEAK (red) 2 channels audio output SIGNAL (green)
LNK/ACT (green) BUSY (green) STATUS (green) ERROR (yellow) RUN (green)

Setting Switch
Reset grand lift changeable audio input 2 channels PAD changeable audio input 2 channels LINE/MIC changeable

SD Section
For log storage (Max. 10000)
Media: SD/SDHC card (Max. 32 GB) (*3)
File system: FAT16 FAT32
Use only SD memory cards rated at 100mA current consumption or less.
No SD card provided.

Installation Method
Rack Desk Surface mount

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 black 30 % gloss

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 Removable terminal plug (6 pins) …2 Removable terminal plug (9 pins) …2 Removable terminal plug (4 pins) …1 Plastic foot …4 Screw for fitting plastic foot …4

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.