Nagra IV Eight-Channel Digital Audio Recorder
Brochure (6-ch version):
|8 channels (4 Mic + 2 Line + 2 Mix)
24 bit, 96 kHz AD / DA
|User programmable Pre-recording buffer
|Post-production compatible (BWF files)(iXML compatible)
||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
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.
The NAGRA VI is an 8 channel digital recorder. There are 6
analgue inputs, 4 of which are equipped with traditional high-quality Nagra
microphone preamplifiers. There are also 2 AES inputs. It is fitted with a full
SMPTE/EBU time code sytem including a chase synchronizer.
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, 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
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
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.
The host connector allows the connection of an external USB drive (USB keyboard,
USB key drive, external hard drive or DVD-RAM burner) and the slave connector
allows the NAGRA VI to appear as an additional drive(s) on a PC or MAC. An
optional second USB port is available (as shown on the photograph above)
allowing both an external USB drive AND a keyboard to be connected
simultaneously, but this should be specified when ordering.
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 15 minutes of 8-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.
here to view the iXML specification chart as implemented in
the NAGRA VI.
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 is used for connection of an external drive (USB key, external
hard disk, DVD-RAM burner) or an external device such as a USB keyboard.
The NAGRA VI can store up to six internal templates
containing all the user selectable settings and parameters of the recorder.
These can be individually named and recalled at any time to rapidly change the
settings of the machine depending on the desired operating situation. Templates
may also be stored on an external media (6 per media) as text files and can be
edited using a simple text editor such as Notepad. This system allows the
creation and use of partial templates if desired.
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 23.976fps rate for the HD format. All the frame rates can
be pulled "up/down" for the NTSC markets.
The internal chase synchronizer allows the NAGRA VI to follw any external
time code signal for post production synchronization purposes.