TOA N-8000AF N-8000 Series Audio Interface Unit
The N-8000AF is an Audio interface unit designed for use with TOA’s packet intercom system (IP network-compatible intercom system) that employs the packet audio technology. It has an analog audio input and output, a time synchronization contact input, and each 8 contact inputs and outputs. Connecting the unit to the LAN permits recording of conversations, chime broadcast at regular intervals (time signal) and paging broadcast to be realized. 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.
Specification
Power Source 220 – 240 V AC, 50/60 Hz
Power Consumption 7 W (max.)
Audio Input 1 input (transformer isolated), -58 dB* to 0 dB*, 2 kΩ, balanced (MIC/LINE input, controllable on the software) with input volume control knob, removable terminal block (3 pins)
Audio Output 1 output (transformer isolated), 0 dB*, 600 Ω, balanced, removable terminal block (3 pins)
Contact Input 8 inputs, no-voltage make contact input, open voltage: 24 V DC, short-circuit current: 5 mA or less, removable terminal block (10 pins), (1 common terminal for 4 inputs)
Contact Output 8 outputs, relay contact output, contact capacity: 24 V DC/2 – 500 mA, removable terminal block (16 pins)
Time Sync Input 1 input, no-voltage make contact input, open voltage: 24 V DC, short-circuit current: 5 mA or less, removable terminal block (2 pins)
Network I/F 10BASE-T/100BASE-TX (Automatic Negotiation)
Auto MDI/MDI-X compatible
Network protocol TCP/IP, UDP, HTTP, RTP, ARP, ICMP, IGMP
Audio packet transmission system Unicast (simultaneous paging to up to 8 zones)
Multicast (simultaneous paging to up to 191 zones)
Network connector RJ45 connector
Voice sampling frequency 16 kHz, 8 kHz (controllable by software)
Quantifying bit number 16-bit
Voice encoding method Sub-band ADPCM, Cryptosystem
Voice packet loss recovery Silence insertion. Audio delay time: 80 ms, 320 ms (controllable on the software)
Indicatiors Network LNK/ACT indication, Status lamp, Power-on indication lamp, Signal lamp, Peak lamp
Other Firmware update function, Reset switch (front panel)
Setting Method Rack, Desk, Surface mount
Operating Temperature 0 °C to +40 °C
Operating Humidity 90 %RH or less (no condensation)
Finish Pre-coated steel plate, black, 30 % gloss
Dimensions 210 (W) × 44.3 (H) × 267 (D) mm
Weight 1.7 kg
Accessories AC Power cord (2 m)
