| 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 |
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| Power/Current Consumption |
10 W (AC operation), 310 mA (DC operation) |
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| 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) |
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| 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) |
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| Frequency Response |
50 Hz - 18 kHz
(48 kHz sampling frequency, PCM, 0 to -6 dB deviation referred to 1 kHz) |
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| Distortion |
0.2 % or less (1 kHz, LINE signal level, 48 kHz sampling frequency, PCM, BPF) |
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| Signal to Noise Ratio |
73 dB or more (LINE signal level, at rated output) |
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| Separation |
70 dB or more (1 kHz, LINE signal level, BPF) |
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| Audio Format |
WAV file |
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| Number of Storable Audio Files |
Max. 8 |
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| Storable Time of Audio File |
Max. 2 min. per audio file
(16 kHz sampling frequency, sub-band-ADPCM, monaural operation) |
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| 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.) |
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| 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 |
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| 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) |
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| 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 |
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| Operation |
2 channels, Audio input level control (Convertible to Audio output level control) |
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| 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) |
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| Setting Switch |
Reset, grand lift changeable, audio input 2 channels PAD changeable, audio input 2 channels LINE/MIC changeable |
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| 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. |
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| Installation Method |
Rack, Desk, Surface mount |
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| Operating Temperature |
-10 ℃ to +50 ℃ (14 ゜F to 122 ゜F)
(0 ℃ to +40 ℃ (32 ゜F to 104 ゜F) when AC adapter is in use) |
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| Operating Humidity |
90 %RH or less (no condensation) |
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| Finish |
Pre-coated steel plate, black, 30 % gloss |
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| Dimensions |
210 (W) × 44.3 (H) × 258 (D) mm (8.27" x 1.74" x 10.16") |
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| Weight |
1.7 kg (3.75 lb) |
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| 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 |
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| 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 |
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