Genex GXA8 Operational Manual
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Genex GXA8 Operational Manual

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GXA8 Operational Manual
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Revision 1.0
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
- pro audio with a smile

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Summary of Contents for Genex GXA8

  • Page 1 L i t e d ……………………………………………………………………………. GXA8 Operational Manual … … … … … … … … … … … … … … … … … … … … … … … … … … … … … Revision 1.0...

  • Page 2: Table Of Contents

    Power ............................1 Location............................1 Mounting Positions........................1 Conformity ..........................1 Technical Support........................1 LAYOUT OF THIS MANUAL......................2 INTRODUCTION TO THE GXA8 ....................... 3 Description..........................3 ............................3 PTIONS FRONT PANEL DESCRIPTION ......................4 Panel Buttons ..........................4 AUDIO............................... 5 ..........................

  • Page 3: Important Notes

    Important notes Unpacking After unpacking the GXA8, save all the packing materials in case you ever need to ship the unit. Thoroughly inspect the GXA8 for signs of damage. Report any shipment damage to the carrier at once. The following accessories are included with the GXA8:- 1 .

  • Page 4: Layout Of This Manual

    GXA8 Operational Manual Rev 1.0 Layout of this Manual Layout of this Manual Sections in this manual appear in the following order. 1 . A brief introduction to the feature set and a list of options. 2 . A detailed front panel description with a functional description of every front panel button and display.

  • Page 5: Introduction To The Gxa8

    The front panel also includes 8 high resolution peak power meters (PPMs), one for each channel. As standard, the GXA8 is fitted with four AES/EBU digital outputs providing eight channels of digital audio output up to 96kHz and four channels of output for 192kHz (an additional four channels are available via the AES expansion card).

  • Page 6: Front Panel Description

    GXA8 Operational Manual Rev 1.0 Front Panel Description Front Panel Description Panel Buttons This button does not function in DSD 1. Mute mode (forced to 44.1kHz) or in slave clock Mutes the digital audio output from the unit mode (locks automatically to input rate) 2.

  • Page 7: Audio

    GXA8 Operational Manual Rev 1.0 Audio Audio Audio Formats This section describes how to configure the audio output section of the GXA8. The following parameters can be adjusted; Standard Output Format AES. Input/Output Formats Available Through Expansion Cards AES (expansion card to provide 8 channel dual wire 192kHz output)

  • Page 8: Bits Out And Dither

    Available choices of bit depth are 16, 20 and 24. Bit Split – Encode or Decode Two different bit-split formats are used depending on whether the GXA8 is in PCM or DSD mode. D will only function on digital inputs via AES, TDIF, ADAT and ECODE SDIF (input) cards.

  • Page 9: Clocks

    However, operating with the GXA8 in master mode is not always possible, so the unit provides several methods for locking to external sources where necessary.
  • Page 10 Note that when locked to a clock rate of 88.2kHz or 96kHz only single or dual-wire mode may be selected. NOTE: When either of the pull-up / pull-down LEDs are lit, the GXA8 is using a fast reacting, wide locking RC Phase Locked Loop instead of its variable crystal oscillators. As a result, the GXA8 may not notice if you subsequently change the incoming sample rate, particularly if you change from a ±0.1% modified to the unmodified rate.

  • Page 11: Meters And Input Level

    Below each PPM is a trim position to set up the input level for each channel. The input gain range is from –10dBu to +6dBu (for a –18dBFS input level). Therefore for full-scale (0dBFS) the GXA8 can accept inputs from +8dBu to +24dBu.

  • Page 12: Back Panel

    • One work-clock output on 75Ω BNC. • Two slot interfaces. The top slot is Slot One. These accept a range of Genex options cards • One AC mains input on an IEC connector. Mains supply must be 100-120V or 200-240V, 50/60Hz.

  • Page 13: Specification

    GXA8 Operational Manual Rev 1.0 Specification Specification A/D Performance Resolution ......................... 16, 20 or 24 Bits Signal / Noise ratio (un-weighted) ......... better than 113.5dB @ 22kHz bandwidth Signal / Noise ratio (A-weighted) ..........better than 117dB @ 22kHz bandwidth THD + Noise................better than -103dB @ -1dBFS, 1kHz Frequency Response (±0.5dB)..............5Hz to 22kHz @ 48kHz Fs...

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