Orban Optimod-FM 5500

Orban Optimod-FM 5500
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DESCRIPTION:

The new Orban Optimod-FM 5500 combines the functionality of the renowned Optimod-FM 5300 and 2300 processors in a compact, affordable 1U rack-mount chassis. It features five-band and two-band processing (including stereo generator), plus a stand-alone stereo generator mode that offers performance equivalent to the stereo generator in Orban's Optimod-FM 8500 and new 8600 processors.

New in the 5500 is a 10 MHz frequency reference input that allows the 19 kHz pilot tone frequency to be locked to GPS (or another high-accuracy frequency standard) to improve performance of single-frequency networks in areas where coverage of the transmitters overlaps. In addition, a cool-running switching power supply saves energy and reduces heat build-up inside the chassis. It also boasts the latest dual-core DSP chip technology from Freescale Semiconductor for maximum performance at budget-friendly price.

The 5500 also features analog and AES3 digital I/O, composite limiter, extensive remote control provisions, Ethernet and RS-232 serial connectivity, and automation using an internal clock that can synchronize to an Internet timeserver. And of course, it gives you that big, punchy “Optimod sound” at the most affordable price ever.

Main Features:
• Five-band and two-band processing
• High performance stereo generator
• Cool running switching power supply
• Analog and AES3 digital I/O

 

Optimod-FM 5500: Specifications

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.

Specifications apply for measurements from analog left/right input to stereo composite output and to FM analog left/right output.

System

Frequency Response(Bypass Mode)
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.
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
>57 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 Samplerate
The 5500 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 (and are anti-aliased), while the composite limiter operates at 512 kHz.

In stand-alone stereo encoder mode, minimum samplerate is 64 kHz.
Processing Resolution
Internal processing has 24 bit (fixed point) or higher resolution.

Analog Audio Input

Configuration
Stereo.
Impedance
>10 kΩ load impedance, electronically balanced.
Nominal Input Level
Software adjustable from -9 to +13 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 samplerate, which the 5500 then decimates to 32 kHz in DSP using an ultra-high-quality image-free synchronous samplerate converter. In strand-alone stereo encoder mode, 64 kHz output of converter is not downsampled.
Filtering
RFI filtered.

Analog Audio Output

Configuration
Stereo. Flat or pre-emphasized (at 50 µs or 75 µs), 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).
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 high-pass filter at 0.15 Hz (-3 dB).
Filtering
RFI filtered.

Digital Audio Input

Configuration
Stereo 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.
Samplerate
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 transformer balanced and floating, 110 Ω 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. 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.
Samplerate
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 configured in software.
Word Length
Software selected for 24, 20, 18, 16 or 14-bit resolution. First-order high-pass 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 Ω 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 Ω voltage source or 75 Ω, jumper-selectable.
Load Impedance
37 Ω or greater. Termination not required or recommended.
Maximum Output Level
+16 dBu (8.72 Vp-p).
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, > 57 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 µF (0 Ω source impedance). Maximum cable length of 100 ft / 30 m RG-58A/U.
Filtering
RFI filtered.

Subcarrier (SCA) Inputs

Configuration
Subcarrier inputs sum into composite baseband outputs before digitally controlled composite attenuator.
Impedance
> 600 Ω.
SCA 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 trim pot.
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

Supported Computer and Operating System
IBM-compatible PC running Microsoft Windows® 2000/XP/Vista/7.
Configuration
TCP/IP protocol via direct cable connect, modem, or Ethernet interface. Suitable null modem cable for direct connect is supplied. Modem and other external equipment is not supplied.
Serial Connector
RS232 on DB-9 male connector, EMI-suppressed. Uses PPP to provide for direct or modem connection to the 8500 PC Remote application.
Ethernet Connector
Female RJ45 connector for 10 - 100 Mbps networks using CAT5 cabling. Native rate is 100 Mbps. Provides for connection to the 8500 PC Remote application through either a network, or, using a crossover Ethernet cable, directly to a computer.
Ethernet Networking Standard
TCP/IP.

Remote Control (GPI) Interface

Configuration
Eight (8) inputs, opto-isolated and floating.
Voltage
6 - 15V AC or DC, momentary or continuous.
9 VDC 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 Filtering.

Tally Outputs

Circuit Configuration
Two NPN open-collector outputs.
Voltage
+15 volts maximum. Do not apply negative voltage. When driving a relay or other inductive load, connect a diode in reverse polarity across the relay coil to protect the driver transistors from reverse voltage caused by inductive kickback.
Current
30 mA maximum.
Indications
Tally outputs can be programmed to indicate a number of different operational and fault conditions, including Input: Analog, Input: Digital, Analog Input Silent, AES Input Silent and AES Input Error.

Power

Voltage
85 - 264 VAC, 50 - 60 Hz, 30 VA.
Connector
IEC, EMI-suppressed. Detachable 3-wire power cord supplied.
Fuse
2.5A, 20mm Quick Acting HBC, mounted on the power supply circuit board.
Grounding
In order to meet EMI standards, circuit ground is hard-wired to chassis ground.
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 - 5% RH, non-condensing.
Dimensions (W x H x D)
19" x 1.875" x 14.25" / 48.3 cm x 4.8 cm x 36.2 cm. One rack unit high.
RFI / EMI
Tested according to Cenelec procedures. FCC Part 15 Class A device.
Shipping Weight
21 lbs. / 9.5 kg.