SR-28
TIMECODE DISTRIBUTOR / RESHAPER

 

SR-28 Timecode Distributor/Reshaper

For Live, Studio and Video Shoot Dates

Cleans up timcode and distributes it to multiple destinations through 8 individually buffered outputs. Ideal for long cable runs. Either of the 2 inputs can be selected.

Like it’s big brother the SR-112 Distripalyzer, the SR-28 can drive timecode over long cables, making it ideal for synchronization during live shows and remote recording.

Brainstorm SR Products for FOH
SR-28 Front Panel

Features

  • 2 x 8 time code distributor
  • Designed to send TC over long cables
  • Buffered outputs; balanced or unbalanced
  • Individual output level adjust
  • Low input threshold can help recover unreadable code
  • Reshaper eliminates amplitude distortions and level fluctuations
  • 2 power inputs for redundancy

Like it’s big brother the SR-112 Distripalyzer, the SR-28 can drive time code over long cables, making it ideal for synchronization during live shows and remote recording.

The SR-28 time code distributor, with two inputs and eight outputs, reshapes time code while distributing it, eliminating amplitude distortions and level fluctuations. The level of each output is individually adjustable via front panel pots. The input is selected via a front panel switch. Also included are 2 power inputs and an automatic switch over in case of failure.

SR-28 Rear Panel

Buffered Outputs

Multing a single time code source to multiple destination can cause many problems. The SR-28 eliminates those by distributing timecode through balanced and buffered outputs.
 

Reshaping vs DA

The Brainstorm Timecode Distributors are more than audio DA’s: they reshape the signal before distributing it. Audio DA’s on the other hand, transfer all distortions and level fluctuations present at the source.
 

Low Input Threshold

The SR-28 recognizes time code at levels much lower than the threshold of many readers (better than -30db) while still safely above the noise floor. This feature makes it often possible to recover unreadable code by reshaping it, almost as if it was regenerating over drop outs.

Output Level Adjust

Output levels are adjustable individually via front panel pots from full off to +12db. These adjusted levels remain constant regardless of input level fluctuations.

Switchable Rise Times

The output rise time (slew limiting) is switchable between 25μs (SMPTE), 50μs (EBU) and 1μs (square wave, preferred by most readers).

Cleaning Up Unreadable Time Code

By eliminating amplitude distortions and level fluctuations the SR-28 can often recover unreadable code.

Dual Redundant Power Supply

The SR-28 provides 2 power inputs and an automatic switch over in case of failure.

Live Applications

The SR-28 can drive timecode over long cables making it ideal for synchronization during live shows and remote recording.

SR-28 Specifications

Distributor configuration: 2×8 with selectable input
Input Signal: SMPTE/EBU Longitudinal Timecode (Forward or reverse; play, shuttle and wind)
Impedance: 20KΩ bal.; 10KΩ unbal.
Level: -30dbU min; +20dbU Max
Output Signal: Waveform: switchable rise time: 1us (square); 25us (SMPTE); 50us (EBU)
Impedance: 600Ω bal.; 300Ω unbal.
Level: adjustable: full off to +8dbU bal.; to + 2dbU unbal.
Amplitude distortion: less than 2%
Front Panel Indicators: Signal present; Selected input
Power on
Connectors: Timecode Inputs: XLR Female (x 2)
Timecode Outputs 1- 8: DB-25 F (x 1)
Power: 4 pin circular (x 2)
Power: 12VDC @ 1.3A
Redundancy: two separate supplies can be connected to the 2 separate power inputs. If one supply fails, the other takes over and an error is reported. The faulty supply can be swapped without having to power down.
Dimensions: 19” x 8.125” x 1.75” (48.26 cm x 20.64 cm x 4.45cm)

SR-28 Resources

FAQs

Is the SR-28 distributor the same as an audio DA?

No. An audio DA is designed to distributes an audio signal. The SR-28 on the other hand not only distributes time code, but also reshapes it, eliminating distortions and amplitude fluctuations. Also, an audio DA may not be designed to handle a 2.4KHz square wave and may induce distortions.

How do I connect the time code outputs?

The SR-28 uses a DB25 connector with the same pin configuration as Tascam/Avid. Standard DB25 to XLR breakout cables are readily available and can be ordered from Brainstorm Electronics.

What if I need more than 8 outputs?

Multiple SR-28 units can be used in cascade. In that case, we recommend setting the rise time of the output(s) feeding the cascaded unit(s) to 1μs (square wave).No. An audio DA is designed to distribute an audio signal. The SR-112 on the other hand not only distributes time code, but also reshapes it, eliminating distortions and amplitude fluctuations. Also, an audio DA may no be designed to handle a 2.4KHz square wave and may induce distortions.

Can I switch input remotely?

Yes, an external switch can be used to change the SR-28 input selection. On the mother board, 2 pads are labeled ‘External Switch Connection’. A momentary SPST switch can be connected to those pads. The front panel LED always indicates the currently selected input. For detailed instructions, download here.