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.
Performance
- Specifications apply for measurements from analog left/right input to stereo composite output and to FM analog left/right output.
- Frequency Response (Bypass Mode): Follows standard 50µs or 75µs 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.
- 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.
- Total System Distortion (de-emphasized, 100% modulation): <0.01% THD, 20 Hz – 1 kHz, rising to <0.05% at 15 kHz. <0.02% SMPTE IM Distortion.
- Total System L/R Channel Separation: >50 dB, 20 Hz – 15 kHz; 60 dB typical.
- Polarity (Two-Band and Bypass Modes): Absolute polarity maintained. Positive-going signal on input will result in positive-going signal on output.
- Processing Sample Rate: The 8300 is a “multirate” system, using internal rates from 32 kHz to 512 kHz as appropriate for the processing being performed. Audio clippers operate at 256 kHz.
- Processing Resolution: Internal processing has 24 bit (fixed point) or higher resolution; uses Motorola DSP56362 DSP chips.
Installation
- Analog Audio Input Configuration: Stereo.
- Impedance: >10k ohm 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 converter.
- Filtering: RFI filtered, with high-pass filter at 0.15 Hz (–3 dB).
Analog Audio Output
- Configuration: Stereo. Flat or pre-emphasized (at 50µs or 75µs), software-selectable.
- Source Impedance: 50 ohm, electronically balanced and floating.
- Load Impedance: 600 ohm 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 ohm 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 64 kHz output sampling rate.
- Filtering: RFI filtered.
Digital Audio Input
- Configuration: Stereo per AES/EBU standard, 24 bit resolution, software selection of stereo, mono from left, mono from right or mono from sum.
- Sampling Rate: 32, 44.1, 48, 88.1, or 96 kHz, automatically selected.
- Connector: XLR-type, female, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, 110 ohm 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 AES/EBU standard. Output configured in software as flat or pre-emphasized to the chosen processing pre-emphasis (50µs or 75µs), with or without J.17 pre-emphasis.
- Sample Rate: 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, or 48 kHz, as configured 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 appropriately for the word length.
- Connector: XLR-type, male, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, 110 ohm 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 ohm voltage source or 75 ohm, jumper-selectable. Single-ended, floating over chassis ground.
- Load Impedance: 37 ohm 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° to 40° C).
- D/A Conversion: 24-bit
- Signal-to-Noise Ratio: <= –85 dB (Bypass mode, de-emphasized, 20 Hz – 15 kHz bandwidth, referenced to 100% modulation, unweighted).
- Distortion: <= 0.02% THD (Bypass mode, de-emphasized, 20 Hz – 15 kHz bandwidth, referenced 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, > 50 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).
- Pilot Protection: –60 dB relative to 9% pilot injection, ±250 Hz (up to 2 dB composite processing drive).
- Subcarrier Protection (60-100 kHz): >= 70 dB (referenced to 100% modulation; with up to 2 dB composite limiting drive; measured with 800 line FFT analyzer using “maximum peak hold” display).
- 57 kHz (RDS/RBDS) Protection: –50 dB relative to 4% subcarrier injection, ±2.0 kHz (up to 2 dB composite processing drive).
- Connectors: Two BNC, floating over chassis ground, EMI suppressed.
- Maximum Load Capacitance: 0.047 microfarad (0 ohm source impedance). Maximum cable length of 100 feet/30 meters RG–59A/U.
- Filtering: RFI filtered.
Subcarrier (SCA) Inputs
- Configuration: Subcarrier inputs sum into composite baseband outputs before digitally controlled composite attenuator.
- Impedance: >600 ohms
- SCA1 Sensitivity: Variable from 220 mV p-p to >10 V p-p to produce 10% injection. Sensitivity is adjustable by an internal PC-board-mounted trimmer.
- SCA2 Sensitivity: Fixed at 772 mV p-p to produce 10% injection.
- Connectors: Two BNC, unbalanced and floating over chassis ground, EMI suppressed.
- 19 kHz Pilot Reference: SCA2 input can be re-jumpered to provide a 19 kHz pilot reference output.
Remote Computer Interface
- Configuration: TCP/IP protocol via direct cable connect, modem, or Ethernet interface. Suitable null modem cable for direct connect is supplied. Modem is not supplied.
- Serial Port: 115 kbps RS–232 port dB–9 male, EMI-suppressed.
- Ethernet Port: 10 Mbit/sec on RJ45 female connector.
Remote Control (GPI) Interface
- Configuration: Eight (8) inputs, opto-isolated and floating.
- Voltage: 6–15V AC or DC, momentary or continuous. 9VDC provided to facilitate use with contact closure.
- Connector: dB–25 male, EMI-suppressed.
- Control: User-programmable for any eight of user presets, factory presets, bypass, test tone, stereo or mono modes, analog input, digital input.
- Filtering: RFI filtered.
Power
- Voltage: 100–132 VAC or 200–264 VAC, switch-selected on the rear panel, 50–60 Hz, 40 VA.
- Connector: IEC, EMI-suppressed. Detachable 3-wire power cord supplied.
- Grounding: Circuit ground is independent of chassis ground, and can be isolated or connected with a rear panel switch.
- Safety Standards: ETL listed to UL standards, CE marked.
Environmental
- Operating Temperature: 32° to 122° F / 0° to 50° C for all operating voltage ranges.
- Humidity: 0–95% RH, non-condensing.
- Dimensions (W x H x D): 19” x 3.5” x 14.25” / 48.3 cm x 8.9 cm x 36.2 cm. Two rack units high.
- Humidity: 0–95% RH, non-condensing.
- RFI / EMI: Tested according to Cenelec procedures. FCC Part 15 Class A device.
- Shipping Weight: 19 lbs / 8.7 kg
Warranty
Two Years, Parts and Service: Subject to the limitations set forth in Orban's Standard Warranty Agreement.
