Omnia-audio Omnia.ONE User Manual download pdf (Page 136)

117

Appendix A: Performance Specifications

Omnia.ONE FM

Note: Discrete I/O measurements have been made in "Bypass" mode (available in the Input/Output menu). FM

composite measurements have been made using the "Proof_Perf" preset.

General Audio Specifications

Frequency Response: Complies with the standard 50 or 75 microsecond pre-emphasis curve within ± 0.50 dB,

30 Hz to 15 kHz. The analog left/right outputs and AES/EBU Digital outputs can be

configured for flat or pre-emphasized output.

System Distortion: Less than 0.01% THD, 20 Hz – 7.5 kHz. Second harmonic distortion

above 7.5 kHz is not audible in the FM system.

*Signal-Noise Ratio: > -80 dB de-emphasized, 20 Hz –- 15 kHz bandwidth, referenced to

100% modulation).

*The measured noise floor will depend upon the settings of the Input and Output Gain controls and is primarily governed

by dynamic range of the Crystal Semiconductor CS5361 A/D Converter which is specified as >110 dB. The dynamic range

of the internal digital signal processing chain is >144 dB.

Stereo Separation: Greater than 65 dB, 20 Hz –- 15 kHz; 70 dB typical..

Crosstalk: > -70 dB, 20 Hz -- 15 kHz.

Composite Outputs: Source Impedance: 5 ohms or 75 ohms, jumper-selectable. Single-ended

and floating over chassis ground.

Output Level: 0V to 10V in 0.05V steps, software adjustable.

D/A Conversion: Texas Instruments/Burr Brown PCM1798, 24-bit sigma-delta converter.

Configuration: Two electrically independent outputs. Software based level

adjustment.

Load Impedance: 50 ohms or greater load is suggested.

Pilot Level: Adjustable from 4.0% to 12.0% in 0.1% steps and OFF.

Pilot Stability: 19 kHz, ± 0.5 Hz.

Signal-to-Noise Ratio: -85 dB typical, 75 μS de-emphasized, 15 kHz

bandwidth, referenced to 100% modulation).

Distortion: < 0.02% THD 20 Hz – 15 kHz bandwidth, 75 μS de-

emphasized, referenced to 100% modulation.

Stereo Separation: > 65 dB, 30 Hz – 15 kHz.

Linear Crosstalk: > -80 dB, main to sub or sub to main channel

(referenced to 100% modulation).

Non-linear Crosstalk: > -80 dB, main to sub or sub to main channel

(referenced to 100% modulation).

38 kHz Suppression: > 70 dB (referenced to 100% modulation).

76 kHz Suppression: > 80 dB (referenced to 100% modulation).

Pilot Protection: > -65 dB relative to 9% pilot injection, ± 1 kHz.

57 kHz (RDS/RBDS) Protection: better than -50 dB.

Connectors: Two EMI suppressed female BNC, floating over chassis ground.

Maximum Load Capacitance: 5nF (at 10 ohms source impedance).

Maximum cable length: 100 feet/30 meters RG-58A/U.

Analog Audio Input: Left/Right Stereo.

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