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The Nagra Seven has been designed as the successor to the Nagra LB, ARES-C, ARES-BB+ and Nagra V recorders. It is a flexible device and can be adapted to a multitude of specific applications depending on the internal options installed. Based on an extremely high performance, simple to operate platform the addition internal I.S.D.N. or SMPTE/EBU time code boards adapt it to either the broadcast or film / TV markets. Optional WiFi / 3G, internal editor and audio compression are also available, to further dedicate the device for particular applications.Video Player
The Seven offers two analogue audio inputs and a single stereo digital input. It will record in PCM linear audio at sampling frequencies up to 192 kHz or in MPEG-1 layer II compressed audio formats if the compression option is installed. The inputs are equipped with traditional Nagra microphone preamplifiers for dynamic and phantom +48V microphones and offer a range of switchable sensitivities to accommodate all common microphones. AES-42 microphones can also be used as the recorder can supply the necessary 10V dc supply voltage on the AES input. The analogue LINE input will accept up to +24dB allowing it to be connected to a standard audio mixer in the field.
The Nagra Seven has a state-of-the-art color touchscreen allowing greater flexibility in the display modes and screens, but also eliminating all switches which are the weakest link in modern electronics. The audio levels, current operating mode and status of the recorder are shown on the touchscreen display mounted on the front of the unit. The screen is sunlight readable, and gives access to the entire menu structure of the recorder. Various programmable “short cuts” are available giving many personalization possibilities.
The Nagra Seven is fitted with an internal 16GB micro SD flash memory, that can be increased by the user if desired. The main extractable media is an SD memory card which inserts into the slot on the left side of the recorder (see picture above).
A micro-AB USB port allows the unit to be connected to a computer for file transfer. With an interface adapter, the same port can also be used to connect an external device such as a USB memory stick or computer keyboard for data entry.
If the optional editing option is installed, then graphic editing of the audio files is possible on the main display. Once the editing of the audio material is complete, files can be transmitted to the studio either over IP (through the ethernet connection using the File Transfer Protocol “FTP” connection) or via a GSM phone using 3G or by Wifi (if the option is installed).
The Nagra Seven has an optional internal time code board that works with all currently accepted frame rates including those for HD TV. It will handle both drop and non-drop frame rates, and will allow pull-up/down too.
A 3.5mm miniature Jack socket is fitted for remote fader start/stop commands. This will allow the unit to be remotely controlled by a simple switch closure.
The Nagra Seven is supplied with a detachable battery box, into which 8 rechargeable “AA” cells can be installed. An optional lithium-polymer rechargeable battery pack, that will power the unit for about 7 hours is available. If phantom powering or transmission options such as WiFi or 3G are used the battery life will be reduced.
Internal storageMicro SD Flash memory cardRemovable mediaSD Flash memorycardDisk formatFAT 16 / 32Recording MethodLinear digital PCM, optional:MPEG 1 layer IIFile type16 / 24 bit Broadcast Wave File BWF (WAV)A/D & D/A24 Bit Sigma DeltaBit rates32 kbits/s up to 384 kbits/secTracks2 individualSampling Rate44.1, 48 kHz, 88.2, 96, 176.4 and 192kHzRecording capacity1hr at 24 bit 48 kHz per GB of memoryPre-recording bufferProgrammableDisplayColor LCD touchscreenLevel metersOn colour display
Digital inputXLR 3-pole / AES 42Analogue inputs2 x XLR Microphone (Dynamic, +48V Phantom) / lineMic. input sensitivity2.8, 10 and 40 mV/Pa selectableMic. input noiseUin < 1µV (2.8 and 10 mV) @ 220Ω Uin < 1.6µV (40 mV)LimitersOn microphone inputsLine input sensitivityAdjustable from -6 dBm up to +24 dBm for 0 dBFS recordingTHD at 1 kHz2.8mV Mic <0.2%, 10mV Mic <0.1%, line <0.1% (measured on AES out)Frequency responseMic, 10Hz – 75 kHz (+0 – 3dB), Line 10 Hz – 90 kHz (+0 -1dB) (measured on AES out)Signal-to-noise ratio>110 dB ASA “A”Input level adj. range42 dB Mic and from -6 to +24 dB LineInput filtersLFAInternal microphoneOn the front panelCrosstalkMic >70dB : Line > 110dB
Analogue line outputXLR 4.4V max (+15 dBm)Crosstalk>110 dBSignal-to-noise ratio>100 dBDigital outputXLR AES-3 (24 bit or 16 bit)THD+N<0.004%Frequency response10 Hz – 75 kHz (+0-3dB)HeadphonesStereo 6.3mm (¼”) Jack 50 ΩInternal speaker0.3W
USBMicro AB connectorM/S DecoderSwitchableEthernetRJ 45
Dimensions165 x 175 x 65mm (W x H x D) (Incl. battery box)Weight800g (1.75 lbs) (Incl. battery pack)Power supplyExternal 15VPower ConsumptionApproximately 5WCharge timeApproximately 3 hoursBattery life>5 hoursRelative humidityFrom 10% to 99% (non condensing)
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