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The Nagra VI
PRELIMINARY INFORMATION (modified November 2007) IMG Removed Digital Location Recorder
Features
6 channels (4 Mic + 2 Line)
24 bit, 96 kHz AD / DA User programmable Pre-recording buffer Post-production compatible (BWF files) Large colour display SMPTE / EBU Time Code USB 2.0 communication Internal 2.5” Hard drive disk and removable Compact Flash Lightweight and battery operated Built-in matrix and two M/S decoders Internal speaker
Note: This is only preliminary information and we reserve the right to alter any information concerning the NAGRA VI project at any time and without notice. The photographs on this page are of the prototypes and do not resemble the finished recorder exactly.
Product description
The NAGRA VI has been designed as the natural successor to the NAGRA-D / DII multi-track digital recorders. Based on a totally new design concept, the hardware of the NAGRA VI is software dependent and can be adapted simply through software. Available in a choice of three colours ("Slate" grey, "Midnight" blue and "Burgundy" red) allowing owners of two or more recorders easily identify a particular unit.
Audio inputs
It offers six independent analogue audio inputs. Inputs 1 - 4 are equipped with traditional NAGRA microphone pre-amplifiers for dynamic and phantom +48V microphones. These pre-amplifiers are a combination of those developed for the NAGRA V and NAGRA-D and are without doubt the best pre-amplifiers NAGRA has ever designed. An audio limiter can be selected for each of these inputs.These totally new input circuits offer the best specifications ever produced by any NAGRA in terms of pure audio quality. The four "In-house" transformers offer fully floating inputs for the dynamic microphones, giving a greatly improved signal-to-noise ratio.
The remaining two analogue inputs are LINE level inputs for connection to other equipment supplying a line level signal, such as radio receivers. When set to the LINE position all 6 analogue inputs will accept up to +24dB. The two input connections (channels 5 + 6) double up as 2 AES inputs (A and B) when selected to digital input mode.
IMG Removed
This left panel clearly shows not only the audio input connections, but also the external DC input socket, the TC In/Out and the two Hirose connectors used for powering external accessories such as radio receivers.
The right side of the recorder is where the CF card is located. The Analogue outputs, and the main AES out as well as the second headphone connector can be clearly seen. Additional AES outputs are located on the 15 pin Extension connector. The Start / Stop terminal is a fader start command as found on other NAGRA recorders.
Recording Medium
The NAGRA VI records to an internal 2.5" hard disk. An extractable compact Flash card is used to record a copy of the audio tracks depending on the users track selections. The NAGRA VI allows approximately 20 minutes of 6 track 48 kHz 24-bit recording per GB of available disk / card space. The compact flash card section is equipped with a "Hot-Swap" possibility meaning that the CF card can be removed and replaced while the NAGRA-VI is powered up, without causing any damage to the card or the recorder.
IMG Removed Colour display
(This photograph is of the prototype display and is slightly distorted)
The NAGRA VI is equipped with a sunlight-readable 3.5" colour TFT display with a resolution of 320 x 200 pixels. This specially designed high luminosity display is used to visually indicate not only the status of the NAGRA VI but also the bargraph modulometers and the current operating modes of the machine. When in the menu mode, the audio levels can be monitored using the LEDs on the front panel.
File back-up
The NAGRA VI is equipped with two USB 2.0 ports. One is designed to connect the NAGRA VI to a computer for file transfer. The second is a "host" connection and although currently unused, it is planned to be used for connection of an external device such as a keyboard.
Technical Specifications
Recording Data storage medium Internal hard disk Removable media Compact Flash type I / II (Hot Swappable) Disk format FAT 16 / 32 Recording Method Linear digital PCM File type 16 / 24 bit Broadcast Wave File BWF (WAV) with iXML, AES 31 compatible A/D & D/A conversion 24 Bit Sigma Delta Tracks 6 individual Sampling Rate 44.1, 48 kHz, 88.2 and 96 kHz (with 0.1% pull up/down) Recording capacity 20 mins of 6 track 24 bit 48 kHz per GB of disk / memory Mono / polyphonic Selectable Pre-recording buffer Up to 10 seconds @ 48 kHz 24 bit on 6 tracks. Display 3.5 inch colour LCD TFT Level meters On colour display AND by LED for microphone inputs
Inputs Digital inputs 2 x XLR AES-3 shared with analogue inputs 5+6 Analogue inputs 4 x symmetrical XLR Microphone (Dynamic, +48V Phantom) / line
Microphone input sensitivity 2.8 and 10 mV/Pa selectable Limiters Selectable on microphone inputs, individual or in pairs. Active at -7.6dBFS, max +40dB for -2 dBFS Line input sensitivity Adjustable from -6 dBm up to +24 dBm for 0 dBFS recording THD at 1 kHz <0.1% Mic, <0.01% line (measured on AES out) Frequency response Mic, 10Hz - 48 kHz ± 0.5 dB, Line ±0.2 dB (measured on AES out) Input noise with condenser mic 0.88 µV (-119 dBm) Input noise with dynamic mic 4 dB (measured ASA "A" loaded 200Ω Signal-to-noise ratio >114 dB Input level adjustment range 50 dB Mic and from -6 to +24 dB Line Input filters LFA (with vortex filtering) Slate microphone Electret on front panel Outputs Analogue line output 2 x XLR 4.4V max (+15 dBm) Digital output XLR AES-3 (24 bit or 16 bit dithered) Headphones 2 x Stereo 6.3mm (¼”) Jack 50 Ω Internal speaker 1W Other USB Host USB 2.0 connector type "A" USB Device USB 2.0 connector type "B" Time code IN/OUT 5 pin LEMO (SMPTE / EBU) M/S Decoder Switchable Word Clock 9-pole "D" type connector Dither Menu selectable 24/16bits on Inputs and/or Outputs
General Dimensions 320 x 74 x 285mm (W x H x D) (Incl. battery box) Weight T.B.A. Power supply Lithium-Ion, or external 9 - 16V (XLR 4 pole) Power Consumption Approximately 10W Charge time 5 hours Ext. power out 2 Hirose 12V (max 1A) Relative humidity From 10% to 99% (non condensing)
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