2-Channel Portable Digital Recorder

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, WiFi/4G, internal editor and audio compressions are also available, to further dedicate the device for particular applications.

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Highlights

Audio Inputs

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.

Nagra Left View

Media

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).

Editing and communication

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/4G or by Wifi (if the option is installed).

Powering

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 8 hours is available. If phantom powering or transmission options such as WiFi or 3G/4G are used the battery life will be reduced.

Touchscreen

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 customization possibilities.

 

USB 2.0 port

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.

SMPTE / EBU Time code

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.

Start / Stop

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.

Audio

  • Two discreet audio channels
  • 16/24 bit, 192 kHz AD / DA
  • User programmable Pre-recording buffer
  • AES-42 compatible
  • Internal sample rate converter
  • Built-in channels matrix and M/S decoder
  • Post-production compatible (BWF files) full iXML metadata
  • Internal loudspeaker and headphone output

Communication

  • SMPTE / EBU Time Code or I.S.D.N. options
  • Ethernet (Ftp and VoIP)
  • WiFi / 3G/4G option (Ftp and VoIP) / GSM
  • USB 2.0 communication

Other

  • Large sunlight-readable color TFT touchscreen display
  • Internal 16GB Flash memory and removable SD Flash
  • Lightweight and battery operated

Recording

Internal storage Micro SD Flash memory card
Removable media SD Flash memorycard
Disk format FAT 16 / 32
Recording Method Linear digital PCM, optional:MPEG 1 layer II
File type 16 / 24 bit Broadcast Wave File BWF (WAV)
A/D & D/A 24 Bit Sigma Delta
Bit rates 32 kbits/s up to 384 kbits/sec
Tracks 2 individual
Sampling Rate 44.1, 48, 88.2, 96, 176.4 and 192kHz
Recording capacity 1hr at 24 bit 48 kHz per GB of memory
Pre-recording buffer Programmable
Display Color LCD touchscreen
Level meters On colour display

Inputs

Digital Input XLR 3-pole / AES 42
Analogue Inputs 2x XLR Microphone (Dynamic, +48V Phantom) / line
Mic. Input Sensitivity 2.8, 10 and 40 mV / Pa selectable
Mic. Input Noise Uin < 1µV (2.8 and 10 mV) @ 220Ω Uin < 1.6µV (40 mV)
Limiters On microphone inputs
Line input sensitivity Adjustable from -6 dBm up to +24 dBm for 0 dBFS recording
THD at 1 kHz 2.8mV Mic <0.2%, 10mV Mic <0.1%, line <0.1% (measured on AES out)
Frequency response Mic, 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. range 42 dB Mic and from -6 to +24 dB Line
Input filters LFA
Internal microphone On the front panel
Crosstalk Mic > 70dB : Line > 110dB

Outputs

Analogue line output XLR 4.4V max (+15 dBm)
Crosstalk >110 dB
Signal-to-noise ratio >100 dB
Digital output XLR AES-3 (24 bit or 16 bit)
THD+N <0.004%
Frequency response 10 Hz – 75 kHz (+0-3dB)
Headphones Stereo 6.3mm (¼”) Jack 50 Ω
Internal speaker 0.3W

Other

USB Micro AB connector
M/S Decoder Switchable
Ethernet RJ 45

General

Dimensions 165 x 175 x 65mm (W x H x D) (Incl. battery box)
Weight 800g (1.75 lbs) (Incl. battery pack)
Power supply External 15V
Power Consumption Approximately 5W
Charge time Approximately 3 hours
Battery life >5 hours
Relative humidity From 10% to 99% (non condensing)

Brochure

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Manual

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