PRS ￣ 1aip1 is an IP based universal audio device,

 supporting VoIP and IP voice transmission applications. It is an ideal solution for closing audio and touch points through long-distance LAN and WAN networks, such as shopping malls, tunnels, railway stations and between railway stations. It can be extended and connected to Praesideo and traditional non network public address systems without PC participation. The device is equipped with analog audio input and output, which can be easily connected with the optional pilot tone monitoring equipment to broadcast emergency voice information. One audio input can be switched to microphone sensitivity with built-in microphone monitoring function. In addition, the control input can also provide cable and connection monitoring functions. Control inputs and outputs can be used to set up an audio connection to initiate a remote call, or to transmit remote fault events to the system controller. Basic function audio supports a variety of audio formats: single channel; full duplex 16 bit PCM or G.711 (extremely low delay time); dual channel sending or receiving MP3 (high quality audio can be obtained under various sampling rates and compression settings). The device is equipped with two balanced line inputs and two balanced line outputs. One of the inputs can be configured as a balanced microphone input with phantom power for electret / condenser microphones and microphone connection monitoring. The output level can be configured as required. In addition, the device also supports audio connection monitoring using 20 kHz pilot tone, and can detect the audio input on the transmitter and regenerate the audio output on the receiver. The settable audio delay can be used for manual delay adjustment during audio playback to achieve synchronization between speakers, such as in tunnels. Audio transmission audio signals can be unicast to up to 16 receivers, pre configured or activated control inputs. These receivers can also relay the incoming audio stream to other receivers. Broadcast is also supported if the interface is on the same LAN. In PCM and G.711 (ulaw and alaw), a full duplex audio connection can be achieved between the two devices. The control input and output devices are equipped with eight control inputs with configurable monitoring functions to monitor open and / or short circuit conditions. Eight control outputs have dry relay contacts. The control input can be passed to the control output for remote operation, and fault information can be transmitted Bi directionally between the audio transmitter and the receiver. In addition, users can configure the control input to change the audio routing mode. The device also provides an additional dry relay contact to indicate equipment failures such as high temperature faults. The network interface device can connect to 10 and 100 Mbit Ethernet networks and announce the IP address provided to it by the DHCP server. It can also search for available IP addresses from the network or assign them a static IP address. A second Ethernet connection can also be used to achieve network redundancy. In addition, the device has a built-in RS 232 interface, which is used to transfer other serial data over the IP network. Power supply the device provides two power connections (main input and standby input), and can monitor these two power supplies. Controls and indicators (front) · recessed reset button · 2 network status LED indicators · 8 control input status LED indicator interconnect assembly (back) · 8 control inputs on the European connector 8 control outputs on the European connector fault relay output on the European connector 2 balanced audio inputs (1 Route in, 1 line / microphone input) on the European connector, 2 balanced audio outputs on the European connector, 2 Ethernet connections on the RJ45, RS 232 on the sub ￣ D, RS 485 on the European connector, main power, on the socket, certificate and approved EMC En55011:2009 (restriction level: b) en50130-4:1995 + A1:1998 + a2:2003 electrical safety IEC60065 (CB ￣ scheme) certification CE mark certification en54 ￣ 16 (0560 - cpd - 10219002 / AA / 04) regional certification European CPR EU_ CPR CE CE CE COC CE certalarm CE DOP accessories quantity Kit 1 prs-1aip1 IP audio interface 1 power 1 connector kit technical specifications electrical external power 1 18 to 56 VDC external power 2 18 to 56 VDC power consumption 8 w (maximum) microphone input (audio input 1) sensitivity - 48.5 to - 26 dbv impedance 1360 ohm frequency response 100 Hz to 15 kHz signal to noise ratio > 60 dB Supervised detection electret: 0.4 – 5 Ma dynamic: 120 – 1300 ohm line input (audio input 1 and 2) sensitivity - 16.5 to + 6 dbv impedance 22 kohm frequency response 20 Hz to 15 kHz SNR > 70 dB pilot tone detection level (input 2 only) - 30 dbv line output (audio output 1 and 2) level 6 dbv (maximum) pilot tone level (output 2 only) -20 dbv (20 kHz) audio format MPEG 1 ￣ layer 3 (mp3) 32, 44.1 and 48 kHz sample rate encoding up to 192 Kbps VBR decoding up to 320 kbps (stereo) MPEG 1 ￣ layer 2 16, 22.05 and 24 kHz sampling rates G.711 ulaw, alaw (at 8, 24 or 32 kHz sampling rate) PCM 16 bit control input 8 x connector Detachable screw terminal operating close contact (with monitoring) control / fault output 8 x / 1 x connector detachable screw terminal operating contact (SPST, no voltage) class 24 V, 0.5 a Ethernet 1 and 2 connectors

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