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OPTIMOD PC
Driver: Multiclient Driver allows 1101 to appear as two standard sound devices to the com-
puter operating system. The output can therefore be routed to multiple software applica-
tions simultaneously, such as audio encoders, recorders, and content insertion systems
running on the host system, and/or the card physical outputs via the Mixer Application.
Software applications running on the host system do not require the use of physical ca-
bles to connect Wave Inputs and Outputs to applications, eliminating any unnecessary
digital sample rate conversion. Content insertion systems that would normally require
two sound devices can be configured to work with one 1101 OPTIMOD-PC, requiring
only one PCI or PCIe slot per program source.
Sample Rate: Internal free running at 32kHz, 44.1kHz, 48kHz, selected in software.
External Sync to either AES/EBU or Clock Input at 32kHz, 44.1 kHz, 48 kHz, 88.1 kHz, 96
kHz, or 10MHz, all ±4%.
Sync: Internal free running or External. Either AES/EBU, Word Clock, or 10MHz input can
be used as source for External Sync.
Wave data will be clocked to software configurable Internal or External sources.
Jitter: Less than 10ns rms.
Output Level Control: Peak level is adjustable from -20 to 0dBFS in 0.1dB steps.
Software adjustable via OPTIMOD-PC Mixer Application and Windows Mixer API.
Analog Audio Input
Number of Inputs: 1
Configuration: Stereo.
Impedance: >10k ohm impedance, electronically balanced, floating and symmetrical.
Nominal Input Level: -10dBu / +4dBu VU, -2dBu / +21dBu PPM.
Software adjustable via OPTIMOD-PC Mixer Application and Windows Mixer API.
Maximum Input Level: +20 dBu, peak.
Reference Level: -20dBFS. -10dBu / +4dBu VU Input Level produces -20dBFS when Input
Level fader is 0dB.
A-D Conversion: 24-bit 128X oversampled delta sigma A/D converter with linear phase
anti-aliasing filter.
Audio Connector: DB-25, EMI suppressed.
Analog Audio Output
Note that this output is primarily for monitoring. Nevertheless, it has been designed for low noise,
distortion, and overshoot and can drive an STL or transmitter in an analog facility. Peak control will
not be as good as at the digital output because transmitted samples will be asynchronous with
peak-controlled internal samples. Like the other OPTIMOD-PC outputs, the source of this output
can be switched between the computer's WAVE output, the output of OPTIMOD-PC's Direct Mixer,
OPTIMOD-PC's peak limiter output, and OPTIMOD-PC's multiband compressor output. Because
most of the delay occurs in the peak limiter, using the multiband compressor output can make
headphone monitoring much more comfortable for live talent when live microphone inputs are
used.
Number of Outputs: 1
Configuration: Stereo.
Source Impedance: 50 Ω, electronically balanced and floating.
Load Impedance: 600 Ω or greater, balanced or unbalanced. Termination not required or
recommended.
7-3
SPECIFICATIONS
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