Orban 8300J, Operating Manual

Page: 221 / 280

OPTIMOD-FM DIGITAL TECHNICAL DATA
6-3
Sampling Rate: 32, 44.1, 48, 88.2, or 96 kHz, automatically selected.
Connector: XLR-type, female, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 trans-
former balanced and floating, 110

impedance.
Input Reference Level : Variable within the range of –30 dBFS to –10 dBFS.
J.17 De-emphasis: Software-selectable.
Filtering: RFI filtered.
Digital Audio Output
Configuration: Stereo per AES3 standard. Can emit the analog FM or digital radio proc-
essed signal. When emitting the FM analog processing signal, the output can be config-
ured in software as flat or pre-emphasized to the chosen processing pre-emphasis (50
µ s
or 75
µ
s), with or without J.17 pre-emphasis.
Sample Rate: Internal free running at 32, 44.1, 48, 88.2 or 96 kHz, selected in software.
Can also be synced to the AES3 digital input at 32, 44.1, 48, 88.2 or 96 kHz, as config-
ured in software.
Word Length: Software selected for 24, 20, 18, 16 or 14-bit resolution. First-order highpass
noise-shaped dither can be optionally added, dither level automatically adjusted appro-
priately for the word length.
Connector: XLR-type, male, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 trans-
former balanced and floating, 110

impedance.
Output Level (100% peak modulation): –20.0 to 0.0 dBFS software controlled.
Filtering: RFI filtered.
Composite Baseband Output
Configuration: Two outputs, each with an independent software-controlled output level
control, output amplifier and connector.
Source Impedance: 0

voltage source or 75

, jumper-selectable. Single-ended, floating
over chassis ground.
Load Impedance: 37

or greater. Termination not required or recommended.
Maximum Output Level: +12.0 dBu (8.72 Vp-p).
Minimum Output Level: –12 dBu (0.55 Vp-p) for 0.5 dB adjustment resolution.
Pilot Level: Adjustable from 6.0% to 12.0%, software controlled.
Pilot Stability: 19 kHz, ±0.5 Hz (10 degrees to 40 degrees C).
D/A Conversion: 24-bit
Signal-to-Noise Ratio: <= –85 dB (Bypass mode, de-emphasized, 20 Hz – 15 kHz band-
width, referenced to 100% modulation, unweighted).
Distortion: <= 0.02% THD (Bypass mode, de-emphasized, 20 Hz – 15 kHz bandwidth, ref-
erenced to 100% modulation, unweighted).
Stereo Separation: At 100% modulation = 3.5Vp-p, > 60 dB, 30 Hz - 15 kHz. At 100%
modulation = 1.0 - 8.0 Vp-p, > 55 dB, 30 Hz - 15 kHz.
Crosstalk-Linear: <= –80 dB, main channel to sub-channel or sub-channel to main channel
(referenced to 100% modulation).
Crosstalk-Non-Linear: <= –80 dB, main channel to sub-channel or sub-channel to main
channel (referenced to 100% modulation).
38 kHz Suppression: >= 70 dB (referenced to 100% modulation).
76 kHz & Sideband Suppression: >= 80 dB (referenced to 100% modulation).