Issue: 2.86
Ovation Systems Ltd
Page 32 of
32
www.ovation.co.uk
User Guide
9
Specification
General:
Mechanical Size:
44 x 55 x 13mm.
Finish:
Hard anodised aluminium.
Operating temperature range:
-20 to +60C.
DC voltage input range:
3.4 to 28 V DC
Power consumption:
See above
Removable battery:
AAA (Alkaline or Lithium cell).
USB Interface:
USB-2, 20 MBytes/Sec download rate.
Recording media:
SD card, up to 128GB supported.
SD card data format:
Proprietary robust file format. Records to a hidden partition.
Connectors:
Ovation i-Conex (see above).
Record control:
> Local start stop buttons.
> VOX (voice operated switch with selectable levels)
> Internal period & daily timers.
> External control input activated by contact to ground.
Audio:
Audio inputs:
2 (optionally 4) internal Knowles mics or 2 (optionally 4) external
mic / line inputs.
External input levels:
Mic Input - 0.8V peak to peak max.level
Line Input - 3V peak to peak max. level
External Input Impedance:
Mic 30k, Line 12k Ohms.
Recording format:
Linear PCM in proprietary file format.
A/D resolution:
24 bit performance with 24 active bits archived to disk.
Audio A/D sampling rate:
44.1 kHz (2 imes over-sampling).
Audio signal to noise:
> 100 dB.
Record file sample rates:
11.025 kHz = 5.5 kHz recordings.
22.05 kHz = 11 kHz recordings.
Audio monitor output:
Mono output of the combined inputs with automatic gain.
Microphone bias:
2.5 V DC, 1k Ohm impedance.
File export via SoundControl:
1, 2 or 4 channel WAV files (IEEE 754 32 bit floating point) with
encrypted embedded date, time and recorder information. Files
are playable in Windows Media Player, VLC etc.
