The Nagra VI Six channel digital audio recorder Digital Location Recorder

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Candice Snow
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The Nagra VI Six channel digital audio recorder Digital Location Recorder Features 6 channels (4 Mic + 2 Line) 24 bit, 96 khz AD / DA Post-production compatible (BWF files)(ixml compatible) SMPTE /

1 The Nagra VI Six channel digital audio recorder Digital Location Recorder Features 6 channels (4 Mic + 2 Line) 24 bit, 96 khz AD / DA Post-production compatible (BWF files)(ixml compatible) SMPTE / EBU Time Code Internal 2.5 Hard drive disk and removable Compact Flash Built-in matrix and two M/S decoders User programmable Pre-recording buffer Large colour display USB 2.0 communication Lightweight and battery operated Internal speaker Product description The NAGRA VI has been designed as the natural successor to the NAGRA-D / DII multitrack 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. The NAGRA VI is supplied with two plastic "handles" which serve to protect the front of the unit from accidental damage, but can also be used to carry the recorder. A carrying case and shoulder strap are also supplied for over-the-shoulder operation. The NAGRA VI is delivered with a removable battery box containing a lithium-ion battery pack, a mains power supply and is equipped with a 120GB internal hard disk.

This blue fronted Nagra VI shows the carrying handles supplied with the recorder.

The Blue-fronted machine has white "flashes" on the potentiomenters.

They can be fitted with or without the carying case which is also supplied with the standard NAGRA VI package.

This picture shows a "Burgundy red" Nagra VI in its textile carrying case with the plastic cover folded back. The carrying handles have been replaced with the padded shoulder strap.

2 This blue fronted Nagra VI shows the carrying handles supplied with the recorder. They serve not only to assist in carrying the Nagra VI but also to protect the front of the recorder from damage but also from accidental alteration of the front panel controls. The Blue-fronted machine has white "flashes" on the potentiomenters. The supplied metal supporting "legs" can be easily attached to the case screws to elevate the front of the recorder when used on a table top. They can be fitted with or without the carying case which is also supplied with the standard NAGRA VI package. This givesa more comfortable viewing angle of the TFT display when used on a table top or sound cart. This picture shows a "Burgundy red" Nagra VI in its textile carrying case with the plastic cover folded back. The carrying handles have been replaced with the padded shoulder strap. Both sides of the case are equipped with Velcro-edged openings for all the cables, and a large pocket is fitted on the top. The "legs" above can also be installed while the case is fitted if desired. 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 audio inputs NAGRA has ever designed. An audio limiter can be selected for each of these inputs and these can be ganged in pairs if desired. These totally new concept 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

Zipper noise suppression The NAGRA VI does not use traditional logarithmic potentiometers for the audio levels as were traditionally used on previous Nagra models.

3 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. Zipper noise suppression The NAGRA VI does not use traditional logarithmic potentiometers for the audio levels as were traditionally used on previous Nagra models. Today digital encoders are preferable because they do not suffer from crackling noise problems, and can be programmed to fulfill a multitude of different operations depending on the software program controlling them. Equally, even the graduation of the sweep is software calculated and can be altered relatively easily, rather than being created by the precision winding of the internal coils during manufacturing. However, such encoders normally suffer from a phenomena known as the Zipper noise. The NAGRA VI benefits from a complex development in a suppression system used on every level control of the recorder. The end-result is that the potentiometers can be moved instantaneously and no digital zipper effect can be heard. The potentiometers on the Nagra VI behave in exactly the same manner as the traditional logarithmic potentiometers used in Nagra analogue recorders but with the advantage of the precision offered by digitally controlled encoder devices, and hence an increase the perfection of all recordings. The left side panel clearly shows not only the analogue and digital audio input connections, but also the external 4 pole XLR DC input socket, allowing the NAGRA VI to be externally powered from an external DC power source such as a car battery. The 5-pin LEMO SMPTE/EBU time code In/Out can also be seen as well as the two HIROSE connectors used for powering external accessories such as radio receivers. These two connectors can supply up to 1 A at 12V.

The Start / Stop terminal is a fader start (contact closure) command as found on other NAGRA recorders. Two USB (host / device) connectors are also located on the right side next to the card slot.

4 The right side of the recorder is where the removable compact flash card is located. A LED next to the slot indicates when the card is accessed. The stereo 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 (contact closure) command as found on other NAGRA recorders. Two USB (host / device) connectors are also located on the right side next to the card slot. Recording medium and format The NAGRA VI records to a 120GB 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. The NAGRA VI records using Broadcast Wave File (BWF) format and is ixml compatible for the metadata making the files compatible with all modern post-production equipment. Click here to view the ixml specification chart as implemented in the NAGRA VI. Channel mixing The Nagra VI has the possibility to mix the audio from the 4 microphone inputs to the channels to serve as a mix. Each microphone input level and L/R pan can be controlled using the arrow keys giving versatile mixing facilities. This mix can be recorded to the CF card in the copy process, as well as being recorded to the internal drive in the nromal manner. If channels 5 + Colour display The NAGRA VI is equipped with a sunlightreadable 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, take number, time code 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. A choice of user selectable screens can be displayed in the Test and Record positions, including the modulometers ONLY, according to the operators desire.

5 6 are not being used for the mix, then all 6 inputs can be mixed either during recording, or subsequent replay, and the resulting mix fed to the line and AES outputs. File back-up The NAGRA VI is equipped with two high speed 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. Time code The internal time code system and all the internal digital electronics of the NAGRA VI are clocked by a crystal which is a "Stratum III" TCXO which has been artificially aged in an oven to maintain stability. This crystal gives a guaranteed overall stability better than ±4.6ppm over a period of 15 years throughout a temperature range from -20 C to +70 C. The drift due to temperature changes is less than 0.28ppm. This is the most accurate crystal ever used in an NAGRA recorder. The NAGRA VI will handle all the standard SMPTE / EBU frame rates as well as the fps rate for the HD format. All the frame rates can be pulled "up/down" for the NTSC markets. Technical Specifications Recording Data storage medium 120 GB Internal hard disk Removable media Compact Flash type I / II (Hot Swappable) Disk format FAT 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 24 Bit Sigma Delta conversion 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 khz 24-bit on 6 tracks Display 3.5 inch colour LCD TFT

6 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 2.8 and 10 mv/pa selectable sensitivity 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 0.88 µv (-119 dbm) condenser mic Input noise with 4 db (measured ASA "A" loaded 200Ω dynamic mic Signal-to-noise ratio >114 db Input level 50 db Mic and from -6 to +24 db Line adjustment range Input filters LFA (with vortex filtering) Slate microphone Electret behind the front panel Outputs Analogue line output Digital output Headphones Internal speaker Other USB Host USB Device Time code IN/OUT M/S Decoder Word Clock Dither 2 x XLR 4.4V max (+15 dbm) XLR AES-3 (24 bit or 16 bit dithered) 2 x Stereo 6.3mm (¼ ) Jack 50 Ω 1W USB 2.0 connector type "A" USB 2.0 connector type "B" 5 pin LEMO (SMPTE / EBU) Switchable 9-pole "D" type connector Menu selectable 24/16bits on Inputs and/or Outputs General Dimensions 310 x 74 x 285mm (W x H x D) (Incl. battery box) Weight 3.8 kg (8.3 lbs) (with battery pack) Power supply Lithium-Ion, or external 9-16V (XLR 4 pole) Power Consumption Approximately 10W Charge time 3 hours (with supplied Lithium-Ion pack) Ext. power out 2 Hirose 12V (max 1A) Operating temp. From -20 C to +60 C (without internal Hard disk)

7 Relative humidity From 0 C to +50 C (Hard disk installed) From 10% to 99% (non condensing)

NAGRA VI Six-track digital recorder

NAGRA VI Six-track digital recorder Swiss Made Nagra next generation technology The best specs ever for pure audio quality Reliable technology The NAGRA VI has been designed for professional use as an