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OPTIMOD PC
Word Length: Selectable 24, 20, 18, or 16-bit. Optional dither can be added with level ad-
justed appropriate to word length. This is first-order noise-shaped dither. (i.e., white
TPDF dither of peak amplitude equal to the quantizer step size with noise shaping spec-
tral density of 6dB/octave.) It sounds substantially quieter than white triangular PDF
dither but, in contrast to more extreme noise-shaped dither, it adds only 3dB unweighted
noise by comparison to white PDF dither.
Sync: Internal free running or external. Either AES/EBU, Word Clock, or 10MHz input can
be used as source for external sync.
Jitter: Less than 10ns rms.
Internal Output: See Wave Audio Output above.
Audio Connector: DB-25, EMI suppressed.
AUDIO CABLE ASSEMBLY
Note: The cable is an extra-cost option because some applications will not require the use
of external audio I/O and therefore do not require a cable.
General Description: DB-25 plug-in 6'/1.8m I/O cable assembly, terminated in XLR con-
nectors
Audio Inputs: XLR Female,
Audio Outputs: XLR Male
Clock Input: BNC Female
Cable wiring Tascam compatible.
POWER
PCI Connector: +5V at 800mA, +12V at 200mA maximum, -12V at 100mA maximum, 7.5
watts total maximum.
PCIe Connector: +3.3V at 1.5A, +12 at 200mA, ±15 derived from DC-DC converter
COMPUTER
Minimum System Requirements: Recommend Intel CPU and Chipsets.
Microsoft Windows 2000: Intel Pentium IV 800 MHz RAM 64MB, 128MB recommended.
Microsoft Windows XP: Intel Pentium IV 1.0 GHz, RAM 256MB, 512MB recommended.
Microsoft Windows Vista/7: Intel Pentium IV 2.0. GHz, RAM 1024MB, 2048MB recom-
mended.
The above specifications are for the minimum recommended CPU power to control an
arbitrary number of OPTIMOD-PC cards with external audio sources. Audio player
and/or encoding software will require additional CPU power.
Bus: PCI Version 2.2 compliant, 32-bit, 33MHz, transfer rate up to 132MBytes/sec. Will op-
erate in 3.3V or 5V PCI slot, and bus extenders. PCI-X 2.0 compliant. Plug and Play
supported.
PCIe: PCIe 1x Version 1.1 compliant. 250/500MB/s. Will operate in any PCIe (PCI Express)
slot, and bus extenders. Plug and Play supported.
Audio Drivers
Microsoft Windows 2000/XP: WDM Audio DirectSound, multi-client, bus-mastering 32/64-
bit
Microsoft Windows Vista, WDM Audio, DirectSound, multi-client, bus-mastering 32/64-bit
Microsoft Windows 7: WDM Audio, DirectSound, multi-client, bus-mastering 32/64-bit
7-5
SPECIFICATIONS
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