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It is impossible to characterize the listening quality of even the simplest limiter or compressor based on specifications, because such specifications cannot adequately describe the crucial dynamic processes that occur under program conditions. Therefore, the only way to evaluate the sound of an audio processor meaningfully is by subjective listening tests. Certain specifications are presented here to assure the engineer that they are reasonable, to help plan the installation, and make certain comparisons with other processing equipment. |
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Specifications apply for measurements from analog left/right input to stereo composite output and to TV analog left/right output. |
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System
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Frequency Response
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Follows standard 50 µs or 75 µs pre-emphasis curve ±0.10 dB, 2.0 Hz – 15 kHz. Analog left/right output and Digital output can be user configured for flat or pre-emphasized output. |
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Noise |
Output noise floor will depend upon how much gain the processor is set for (Limit Drive, AGC Drive, Two-Band Drive, and/or Multi-Band Drive), gating level, equalization, noise reduction, etc. The dynamic range of the A/D converter, which has a specified overload-to–noise ratio of 110 dB, primarily governs it. The dynamic range of the digital signal processing is 144 dB. |
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Total System Distortion
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<0.01% THD, 20 Hz – 1 kHz, rising to <0.05% at 15 kHz. <0.02% SMPTE IM Distortion. |
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Total System L/R Channel Separation
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>80 dB, 20 Hz – 15 kHz; 90 dB typical. | ||||||||||
Polarity
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Absolute polarity maintained. Positive-going signal on input will result in positive-going signal on output. |
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Processing Sample Rate |
The 8382 is a “multirate” system, using internal rates from 32 kHz to 256 kHz as appropriate for the processing being performed. Audio clippers operate at 256 kHz. |
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Processing Resolution |
Internal processing has 24 bit (fixed point) or higher resolution; uses Motorola DSP56362 DSP chips. |
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Delay
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The minimum available input / output delay is approximately 20 ms, as determined by the advanced “look-ahead” processing algorithms employed. This can be padded to exactly one frame of 24, 25, 29.97 or 30 frames / second video. | ||||||||||
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Operating Mode
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Stereo or dual-mono. In dual-mono mode, both processing channels have the same subjective adjustments (as determined by the active preset) but are otherwise independent, making this mode appropriate for dual-language transmissions. | ||||||||||
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Analog Audio Input
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Configuration |
Stereo / Dual-Mono. |
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Impedance |
>10 kΩ load impedance, electronically balanced. (No jumper selection available for 600 Ω. Through-hole pads are available on I/O module for user-installed 600 Ω termination.) |
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Nominal Input Level |
Software adjustable from –4.0 to +13.0 dBu (VU). |
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Maximum Input Level |
+27 dBu. |
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Connectors |
Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical. |
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A/D Conversion |
24 bit 128x oversampled delta sigma converter with linear-phase anti-aliasing filter. Converter outputs 64 kHz sample rate, which the 8382 then decimates to 32 kHz in DSP using an ultra-high-quality image-free synchronous sample rate converter. |
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Filtering |
RFI filtered, with high-pass filter at 0.15 Hz (-3 dB). |
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Analog Audio Output
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Configuration |
Stereo. Flat or pre-emphasized (at 50 µs or 75 µs), software-selectable. |
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Source Impedance |
50 Ω, electronically balanced and floating. |
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Load Impedance |
600 Ω or greater, balanced or unbalanced. Termination not required or recommended. | ||||||||||
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Output Level
(100% peak modulation) |
Adjustable from –6 dBu to +24 dBu peak, into 600 Ω or greater load, software-adjustable. |
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Signal-to-Noise |
≥90 dB unweighted (Bypass mode, de-emphasized, 20 Hz – 15 kHz bandwidth, referenced to 100% modulation). |
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L/R Crosstalk
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≤ –70 dB, 20 Hz – 15 kHz. | ||||||||||
Distortion |
≤0.01% THD (Bypass mode, de-emphasized) 20 Hz – 15 kHz bandwidth. |
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Connectors
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Two XLR-type, male, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical. |
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D/A Conversion
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24 bit 128x oversampled. | ||||||||||
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Filtering
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RFI filtered. |
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Digital Audio Input
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Configuration
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Stereo or Two-Channel (dual-mono) per AES3 standard, 24-bit resolution, software selection of stereo or dual-mono. Unit can detect Stereo or Two-Channel status bits and switch modes appropriately. |
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Sampling Rate
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32, 44.1, 48 or 88.1 kHz, automatically selected. |
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Connector
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XLR-type, female, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, |
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Input Reference Level
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Variable within the range of -30 dBFS to -10 dBFS. | ||||||||||
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J.17 De-emphasis
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Software-selectable. | ||||||||||
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Filtering
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RFI filtered. | ||||||||||
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Digital Audio Output
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Configuration
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Stereo or Two-Channel per AES3 standard. Output configured in software as flat or pre-emphasized to the chosen processing pre-emphasis (50 µs or 75 µs), with or without J.17 pre-emphasis. | ||||||||||
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Sample Rate
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Internal free running at 32, 44.1, 48, 88.1 or 96 kHz, selected in software. Can also be synced to the AES/EBU digital input at 32 , 44.1, 48 , 88.1 or 96 kHz, as configured in software. | ||||||||||
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Connector
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XLR-type, male, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, 110 Ω impedance. |
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Output Level
(100% peak modulation) |
–20.0 to 0.0 dBFS, software controlled. | ||||||||||
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Filtering
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RFI filtered. | ||||||||||
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Remote Computer Interface
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Configuration
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TCP/IP protocol via direct cable connect, modem, or Ethernet interface. Suitable null modem cable for direct connect is supplied. Modem is not supplied. | ||||||||||
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Serial Port
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115 kbps RS–232 port DB–9 male, EMI-suppressed. | ||||||||||
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Ethernet Port
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100 Mbit/sec on RJ45 female connector. | ||||||||||
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Remote Control (GPI) Interface
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Configuration
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Eight (8) inputs, opto-isolated and floating. | ||||||||||
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Voltage
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6 – 15 V AC or DC, momentary or continuous. 9 V DC provided to facilitate use with contact closure. | ||||||||||
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Connector
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DB–25 male, EMI-suppressed. | ||||||||||
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Control
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User-programmable for any eight of user presets, factory presets, bypass, test tone, stereo or mono modes, analog input, digital input. | ||||||||||
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Filtering
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RFI filtered. | ||||||||||
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Power
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Voltage
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100 – 132 V AC or 200 – 264 V AC, switch-selected on the rear panel, 50 – 60 Hz, 40 VA. | ||||||||||
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Connector
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IEC, EMI-suppressed. Detachable 3-wire power cord supplied. | ||||||||||
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Grounding
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Circuit ground is independent of chassis ground, and can be isolated or connected with a rear panel switch. | ||||||||||
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Safety Standards
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ETL listed to UL standards, CE marked. | ||||||||||
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Environmental
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Operating Temperature
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32 ° to 122 °F / 0 ° to 50 °C for all operating voltage ranges. | ||||||||||
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Humidity
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0 – 95% RH, non-condensing. | ||||||||||
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Dimensions (W x H x D)
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19” x 3.5” x 14.25” / 48.3 cm x 8.9 cm x 36.2 cm. Two rack units high. | ||||||||||
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RFI / EMI
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Tested according to Cenelec procedures. FCC Part 15 Class A device. | ||||||||||
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Shipping Packing
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63 x 57 x 25 cm Weight: 22 lbs / 10.0 kg |
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Warranty
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Two Years, Parts and Service
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Subject to the limitations set forth in Orban's Standard Warranty Agreement. | ||||||||||
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Because engineering improvements are ongoing, specifications are subject to change without notice.
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| Last updated: Oct. 2010 |
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