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Studio Technologies Model 5120E
Studio Technologies Model 5120E
 
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List Price: $515.00
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Availability: Usually Ships in 24 Hours
Product Code: 9999-12737

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Studio Technologies Model 5121 Line/IFB Output Module

Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module

Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module Details

Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module is a compact, self-contained 2-channel module intended for use in custom broadcast, live-performance, and other specialized audio applications. The module provides broadcast and production talent cueing interfaces, specifically two line-level and one IFB outputs, in an easy-to-use yet technically sophisticated package. (Note that IFB is an acronym for Interrupted Fold Back, an arcane broadcast technical term meaning the cue signals sent to on-air talent or other technical support personnel.) Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's basic functions include selectable analog and digital audio inputs, input level and status LED indicators, two analog line-level outputs, and a 2-channel DC-biased broadcast-standard IFB output. Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's operation requires only a source of analog or digital audio, along with an externally-provided source of 12 volts DC.


Applications for Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module include sports broadcasting booth packages, remote news gathering "fly-packs," stadium audio/video interface (I/O) locations, and other broadcast-infrastructure projects. The number of Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Modules used in a project can vary widely?"from one to dozens. In each case Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's performance will be completely "pro" with audio quality, reliability, and installation flexibility matching that of larger-scale audio consoles, matrix intercom systems, and stand-alone IFB systems. Typical applications will find Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's analog and digital inputs being interfaced with outputs provided by fiber-optic transport modules, audio/video routers, broadcast/production consoles, and matrix intercom systems.


Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's line-level outputs would typically be connected to battery-powered listen-only headphone amplifiers, amplified speakers, or inputs on broadcast media storage systems. In remote-broadcast applications these two outputs may be referred to as "dry" (no DC voltage present) IFB signals. Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's IFB output is directly compatible with listen-only portable IFB amplifiers, such as the Models 32A, 33A, or 34A from Studio Technologies, Inc. The 2-channel IFB output provides signal common on one pin, +28 volt DC power with superimposed analog audio on a second pin, and analog audio only on a third pin. This complies with a long-popular broadcast-standard implementation.


Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Modules do not include a mounting enclosure or chassis. They are intended for mounting in custom 19-inch rack panels, equipment boxes, broadcast furniture, or other specialized settings. It is expected that integration firms will create applications that use Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Modules as part of complete broadcast, production, corporate, and government solutions.


Separate audio inputs are provided for interfacing with analog and digital audio sources. The two analog inputs are balanced (differential) and compatible with line-level signals. An unbalanced AES3id digital audio input allows the connection of two digital audio channels. A configuration DIP-type switch allows selection of the desired input signal. Two 7-segment LED meters provide the user with an indication of the inputs levels.


Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's audio performance is very good. Low-noise, wide dynamic-range circuitry ensures that the input audio quality is preserved. The audio from the digital audio input is routed to a high-performance digital-to-analog conversion (DAC) section that supports sample rates of up to 48 kHz with a bit depth of up to 24. The outputs of the analog inputs or DAC circuitry are routed to two line-level analog audio output sections. These provide the line-level, balanced (differential), ESD-protected, capacitor-coupled output signals.


The two analog signals from the selected input channels are also routed to the IFB circuitry. One channel is used to modulate the DC power source circuitry. The second channel is routed to a single-ended (unbalanced) line-driver circuit. The IFB power source circuitry provides a low-noise, current-limited source with a nominal 28 volt DC output. This is essentially identical to that created by "big time" broadcast IFB systems. Logic circuitry contained within Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module monitors the DC output voltage. Should a low-voltage/over-current condition be detected the DC output enters a protection mode.


Once the fault condition is removed normal operation will again resume. An LED, located on Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module's front panel, provides an indication of the IFB output's status. Note that for additional flexibility, the source impedance of both IFB output channels is 200 ohms, allowing intercom "beltpacks" to also serve as listen-only devices.


All audio inputs and outputs were carefully designed for use in permanent as well as field applications. Filtering on the inputs minimizes the chance that radio frequency (RF) energy will interfere with audio input sources. Other components were included to address ESD ("static") and DC over-voltage conditions The DC power input is protected from accidental polarity reversal.


Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module requires an external source of nominal 12 volts DC for operation. The acceptable input voltage range is 10 to 18 allowing a variety of power sources to be utilized. Internal power supply circuitry within Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module creates the voltages required for the analog audio, digital audio, and IFB circuitry.


Standard connectors are used throughout Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module. Line-level and IFB output connections are made using 3-pin male XLR-type connectors. The two analog audio inputs use a 5-position, 0.1-inch "header" connector. A DIN 1.0/2.3 coaxial connector is used to interface with the digital audio input. The DC power input connections use a 4-position, 0.1-inch header. Low-cost IDC (insulation displacement) mating connectors allow simple interconnection with the analog audio inputs and DC power signals.


Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module supports applications that require European Broadcast Union (EBU) compliance with an analog audio reference level of 0 dBu and a digital audio reference level of ?"18 dBFS (EBU R68).


Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module Features


  • A compact, self-contained 2-channel module intended for use in custom broadcast, live-performance, and other specialized audio applications
  • Provides broadcast and production talent cueing interfaces, specifically two line-level and one IFB outputs, in an easy-to-use yet technically sophisticated package
  • Selectable analog and digital audio inputs
  • Input level and status LED indicators
  • Two analog line-level outputs
  • 2-channel DC-biased broadcast-standard IFB output
  • Requires only a source of analog or digital audio, along with an externally-provided source of 12 volts DC
  • Supports applications that require European Broadcast Union (EBU) compliance with an analog audio reference level of 0 dBu and a digital audio reference level of ?"18 dBFS (EBU R68)

Studio Technologies Model 5120E EBU-Compatible Line/IFB Output Module Specifications


  • Manufacturer: Studio Technologies
  • Product: Model 5120E EBU-Compatible Line/IFB Output Module

Digital Audio Input

  • Digital Audio Input: 1 (2-channel)
  • Type: AES3id, unbalanced, 75 ohms
  • Max. Sample Rate/Bit Depth: 48 kHz/24
  • Nominal Level: ?"18 dBFS (Model 5120E)

Analog Audio Inputs

  • Analog Audio Inputs: 2
  • Type: electronically balanced, capacitor-coupled, 20 k ohms
  • Nominal Level: 0 dBu (Model 5120E)
  • Max. Level: +24 dBu

Analog Inputs to Line Outputs

  • THD+N: 0.005% (?"86 dB), +4 dBu input, 1 kHz
  • Frequency Response: ±2 dB, 20 Hz to 20 kHz
  • Signal to Noise Ratio (A Weighted): 93 dB
  • Dynamic Range: 113 dB
  • Crosstalk: 105 dB, +23 dBu in, 1 kHz and 10 kHz

Digital Inputs to IFB Output, Pin 2

  • THD+N: 0.07% (?"63 dB), +4 dBu input, 1 kHz
  • Frequency Response: ±1 dB, 100 Hz to 20 kHz
  • Signal to Noise Ratio (A Weighted): 64 dB
  • Dynamic Range: 84 dB

Digital Inputs to IFB Output, Pin 3

  • THD+N: 0.03% (?"71 dB), +4 dBu input, 1 kHz
  • Frequency Response: ±1 dB, 20 Hz to 20 kHz
  • Signal to Noise Ratio (A Weighted): 70 dB
  • Dynamic Range: 90 dB

IFB Output

  • Type: DC power with two channels of unbalanced audio
  • Connections: Common on pin 1, DC (+28 V nominal) modulated with channel 1 audio (?"10 dBu nominal) on pin 2, channel 2 audio (?"10 dBu nominal) on pin 3
  • Max. Audio Output Level: Pin 2 (+9 dBu with +23 dBu on audio input), Pin 3 (+10 dBu with +24 dBu on audio input)
  • DC Current Output: 120 mA max.
  • Output Impedance: 200 ohms, nominal
  • Meters: 2, 7-segment LED, modified VU ballistics

Connectors

  • Line and IFB Outputs: 3, 3-pin male XLR-type
  • AES3id Digital Audio Input: 1, DIN 1.0/2.3-compliant coaxial
  • Analog Audio Input: 1, 5-position male header, AMP® MTA-100-Series, part number 2-644486-5
  • DC Input: 1, 4-position male header, AMP MTA-100-Series, part number 2-644486-4

Power Requirements

  • DC Power: 12 volts DC nominal
  • Current: 600 mA max
  • Acceptable Range: 10-18 volts DC, 700 mA max at 10 volts

Dimensions/Weight

  • Width: 3.75 inches wide (9.5 cm)
  • Height: 1.69 inches high (4.3 cm)
  • Depth: 2.30 inches deep (5.8 cm)
  • Weight: 0.2 pounds (91 g)

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