Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N)

Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N)

Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N)

B&H # NASEVENINASD MFR # SEVEN ISDN
Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N)

Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N)

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  • 1Description

The Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N) offers two analog audio inputs and a single stereo digital input. 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. The color touchscreen allows greater flexibility in the display modes and screens. The unit comes fitted with an internal 16GB microSDXC flash memory that can be increased by the user if desired. A micro-AB USB port allows the unit to be connected to a computer for file transfer. A 3.5mm miniature-jack socket is fitted for remote fader start/stop commands.

Audio Inputs
The recorder offers two analog 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 10 VDC supply voltage on the AES input. The analog LINE input will accept up to +24 dB allowing it to be connected to a standard audio mixer in the field.
Touchscreen
The Seven has a color touchscreen allowing greater flexibility in the display modes and screens. 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.
Media
The Nagra Seven is fitted with an internal 16GB microSDXC 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.
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.
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 or by Wi-Fi (if the option is installed).
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.
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 7 hours is available. If phantom powering or transmission options such as Wi-Fi or 3G are used, the battery life will be reduced. 1
In the Box
Nagra Seven 2-Channel Portable Digital Recorder (I.S.D.N)
  • Power Supply
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description
    Recording
    Internal Storage microSDXC Flash memory card
    Removable Media SD Flash memory card
    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 and D/A Conversion 24-bit Sigma Delta
    Bit Rates 32 kb/s up to 384 kb/s
    Tracks 2 individual
    Sampling Rate 44.1, 48, 88.2, 96, 176.4 and 192 kHz
    Recording Capacity 1 hour at 24-bit/48 kHz per GB of memory
    Pre-Recording Programmable
    Display Color LCD touchscreen
    Level Meters On color display
    Inputs
    Digital Inputs XLR 3-pole / AES 42
    Analog Inputs 2 x XLR Microphone (Dynamic, +48 V Phantom) / line
    Input Sensitivity 2.8, 10 and 40 mV/Pa selectable
    Mic Input Noise (E.I.N.) Uin < 1µV (2.8 and 10 mV) @ 220 ohms Uin < 1.6 µV (40 mV)
    Limiter On microphone inputs
    Line Input Sensitivity Adjustable from -6 dBm up to +24 dBm for 0 dBFS recording
    THD 2.8 mV Mic <0.2%, 10 mV Mic <0.1%, line <0.1% (measured on AES out)
    Frequency Response Mic, 10 Hz - 75 kHz (+0 - 3 dB), Line 10 Hz - 90 kHz (+0 -1dB) (measured on AES out)
    Signal-to-Noise Ratio > 110 dB ASA "A"
    Adjustment Range 42 dB mic and from -6 to +24 dB Line
    Input Filters LFA (with vortex filtering)
    Internal Microphone On the front panel
    Crosstalk Mic > 70 dB : Line > 110 dB
    Outputs
    Analog Output XLR 4.4 V max (+15 dBm)
    Crosstalk >110 dB
    Signal to Noise Ratio > 100 dB
    Digital Output XLR AES-3 (24-bit or 16-bit dithered)
    THD + N <0.004%
    Frequency Response 10 Hz - 75 kHz (+0-3dB)
    Headphones Stereo 6.3mm (1/4") Jack 50 ohms
    Internal Speaker 0.3 W
    Other
    USB micro-AB connector
    M/S Decoder Switchable
    Ethernet RJ-45
    General
    Power Supply External 15 V
    Power Consumption Approximately 5 W
    Charge Time Approximately 3 hours
    Battery Life > 5 hours
    Relative Humidity From 10 to 99% (non-condensing)
    Dimensions (W x H x D) 6.49 x 6.89 x 2.55" (165 x 175 x 65 mm) including battery box
    Weight 1.75 lb (0.8 kg) including battery pack
    Packaging Info
    Package Weight 3.7 lb
    Box Dimensions (LxWxH) 14.3 x 10.1 x 3.6"

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