Orban OPTIMOD-FM 8600, Operating Manual

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6-2
TECHNICAL DATA ORBAN MODEL 8600
Installation
Delay
Defeatable Analog FM Processing delay: 0.27 to 8.192 seconds for the 8-seconds board
and 16.384 seconds for the 16-second board, adjustable in one-sample increments at
64 kHz sample rate to allow the delays of the analog and digital paths in the HD Radio
system to be matched at the receiver output.
Minimum Processing Delay: Processing structure dependent. Typically 17 ms for normal
latency Five-band, 13 ms for low-latency Five-band, 3.7 ms for ultra-low-latency Five-
band, and 17 or 22 ms for 2-band, depending on crossover structure chosen. MX pre-
sets have approximately 270 ms delay.
Analog Audio Input
Configuration: Stereo.
Impedance: > 10k
Ω
load impedance, electronically balanced
1
.
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.
Filtering: RFI filtered, with high-pass filter at 0.15 Hz.
Analog Audio Output
Configuration: Stereo. The analog output can emit the analog FM processed signal, the
digital radio processed signal, or the low-delay monitor signal. The FM processed signal
can be flat or pre-emphasized (at 50
µ s or 75 µ s), software-selectable.
Source Impedance: 50
Ω
, electronically balanced and floating.
Load Impedance: 600
Ω
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
Ω
or greater load, software-adjustable.
Signal-to-Noise: > = 90 dB unweighted (Bypass mode, de-emphasized, 20 Hz - 15 kHz
bandwidth, referenced to 100% modulation).
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.
Filtering: RFI filtered.
1
No jumper selection available for 600
Ω
. Through-hole pads are available on I/O
module for user-installed 600
Ω
termination.