Installation - Orban Optimod-FM 8300 Operating Manual

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TECHNICAL DATA

Installation

Delay
Minimum Processing Delay: Processing structure dependent. Typically 20 ms for optimum
5-band using "MX" presets, 15 ms for optimum 5-band using non-MX presets, 3.7 ms for
ultra-low-latency 5-band, and 17 or 22 ms for 2-band, depending on crossover structure
chosen.
Relative Delay Between HD and FM Analog Processing Chains: Constant number of
samples. HD has approximately 3 ms longer delay than analog.
Analog Audio Input
Configuration: Stereo.
Impedance: >10k load impedance, electronically balanced
Nominal Input Level: Software adjustable from –4.0 to +13.0 dBu (VU).
Maximum Input Level: +27 dBu.
Connectors: Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and
3 electronically balanced, floating and symmetrical.
A/D Conversion: 24 bit 128x oversampled delta sigma converter with linear-phase anti-
aliasing filter. Converter outputs 64 kHz sample rate, which the 8300 then decimates to
32 kHz in DSP using an ultra-high-quality image-free synchronous sample rate con-
verter.
Filtering: RFI filtered.
Analog Audio Output
Configuration: Stereo. Flat or pre-emphasized (at 50µs or 75µs), software-selectable.
Source Impedance: 50, electronically balanced and floating.
Load Impedance: 600 or greater, balanced or unbalanced. Termination not required or
recommended.
Output Level (100% peak modulation): Adjustable from –6 dBu to +24 dBu peak, into 600
or greater load, software-adjustable.
Signal-to-Noise: >= 90 dB unweighted (Bypass mode, de-emphasized, 20 Hz–15 kHz
bandwidth, referenced to 100% modulation).
L / R Crosstalk: <= –70 dB, 20 Hz–15 kHz.
Distortion: <= 0.01% THD (Bypass mode, de-emphasized) 20 Hz–15 kHz bandwidth.
Connectors: Two XLR-type, male, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3
electronically balanced, floating and symmetrical.
D/A Conversion: 24 bit 128x oversampled, with high-pass filter at 0.15 Hz (–3 dB).
Filtering: RFI filtered.
Digital Audio Input
Configuration: Stereo per AES3 standard, 24 bit resolution, software selection of stereo,
mono from left, mono from right or mono from sum.
1 No jumper selection available for 600. Through-hole pads are available on I/O
module for user-installed 600 termination.
ORBAN MODEL 8300
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