Brainstorm Electronics SR-26 Dual Time Code Distributor/Reshaper W/Power Supply

Description: UP FOR YOUR CONSIDERATION1-BRAINSTORM ELECTRONICS SR-26 DUAL TIME CODE DISTRIBUTOR/RESHAPERWITH POWER SUPPLY IntroductionThe SR-26 is a high quality reshaper that can recondition very low level or amplitude distorted time code into a properly shaped waveform and distributes it through 6 individually buffered outputs. The SR-26 houses 2 separate time code reshapers. Reshaper “A” has 4 outputs (1 through 4) and reshaper “B” has 2 (5 and 6). A front panel switch lets you route input “A” into reshaper “B”, changing the SR-26 into a single 1x6 distributor. Distributing Time Code In today’s studio, more and more pieces of equipment rely on time code for precise timing: console automations, sequencers, DAW’s, readers, synchronizers, editors etc... Simply multing a single output of a tape machine or of a generator is not recommended because it can cause serious problems: • Multing a single output ties the destinations’ inputs together. If one piece of gear is misswired and creates a short, all destinations will be affected. This could easily happen since, until recently, there was no universal standard regarding XLR pins 2 and 3. • Heavy loading from high capacitance cables and/or low impedance loads can cause source distortions and instability. The SR-26 eliminates these problems by providing 6 individually buffered and balanced outputs. In addition to distributing time code, the SR-26 also reshapes it. Reshaping Time Code When time code comes off a tape machine (especially VCR’s), it usually has improper rise/fall times, leading edge peaking and different amplitude levels on “one’s” and “zero’s” (see diagrams below). This is due to the fact that analog tape machines were not designed to record a signal that is basically digital. This can make the time code difficult or sometimes impossible to read. The SR-26 eliminates these amplitude distortions by reshaping the code to its original SMPTE or EBU specifications. TIME CODE LEVEL Some readers operate best when time code is at a specific level. The problem is that this is not necessarily the level at which it was recorded. Also, if this level fluctuates or drops below the reader’s threshold, time code can become unreadable. With the SR-26, you can adjust each output level individually so that optimum levels can be sent to each reader. These lev els will remain constant regardless of input level fluctuations. Since the SR-26’s input threshold is lower than many readers (better than -30dB), it can reshape and recover time code that many synchronizers can’t read. SELECTING THE PROPER RISE TIME Per SMPTE and EBU specifications, the rise time limiting is used to minimize crosstalk from time code into audio. A longer rise time removes more high frequency components from its waveform. However some equipment may not be able to read time code if its rise time is too long. The SR-26 has 3 preset rise times for its output waveform: 25 µsec (SMPTE), 1µsec (square wave) and 50µsec (EBU). As a general rule, if time code is patched directly into a reader, use the square wave position; but, whenever possible cross-talk problems exist (i.e. in an audio patchbay...) or when recording the reshaped signal, use the SMPTE or EBU setting (as needed). Additional applications1. DUBBING TIME CODE Re-recording time code by direct transfer is not recommended since the accumulated distortions make it very unreliable. Instead, patch your time code into the SR-26 and record the reshaped output. Set the rise time switch to SMPTE or EBU (as needed) and adjust the output level for optimum recording. To minimize cross-talk, do not record time code and audio simultaneously on adjacent tracks. Instead, stripe time code first, then sync up the tape machine(s) and record the audio. While recording the audio, you will erase any time code that may have spilled to adjacent tracks. 2. VARIABLE SPEED RESHAPING Some variable speed readers are designed to read time code at speeds ranging from 1/50th to 100x playspeed. However, at high or low speeds, many tape machines distort time code so badly that it becomes unreadable. The SR–26 can reshape time code over an even wider range in forward and in reverse. For variable speed reshaping, the recorder’s playback electronics must be capable of reproducing higher/lower frequencies: SMPTE at 20x playspeed = 48Khz; at 1/100x playspeed= 24Hz. For high speed reshaping, set the rise time switch to square wave so high frequencies don’t get filtered out. 3. TIME CODE IN REMOTE TRUCKS Long cables can induce ringing or rounding off of the signal and render time code unreadable. The SR-26 can drive several hundred feet of cable and remain stable. This makes it ideal for sending time code to or from a remote truck. Re-shaping vs. re-generating Many problems are caused by distorted time code and most of them can be solved by reshaping the time code. However the SR-26 will not correct bit or timing errors nor will it regenerate new time code if the incoming signal drops out. The reshaper eliminates amplitude distortions. To repair timing distortions or drop-outs, use a time code generator. Typical problems solved by the SR-26☞ Time code was recorded too low (or the reader threshold is too high); ☞ Glitches or drop outs due to level fluctuations; ☞ Reader equipment is sensitive to improper waveform due to:• Distortions induced by cable or inductive load (either ringing or rounding off), • Poor reproduction of the recorded time code (especially with VCR’s), • Elongated rise time at low shuttle speeds, • Accentuated peaks at high shuttle speeds; • The output of some old generators is distorted and needs reshaping; • Reader equipment requires a fast rise time; ☞ One of the destinations is shorting all others through a mult; Specifications Configuration:1x4 + 1x2 or 1x6 (front panel switchable)Input: Signal: SMPTE/EBU Longitudinal Time Code (forward or reverse,play, shuttle & wind) Impedance: 20KΩ balanced; 10KΩ unbalanced Level: -30dbU min; +20dbU max Output: Impedance: 600Ω balanced; 300Ω unbalanced Level: full off to +10dbU balanced; to +4dbU unbalanced front panel pots adjustable Waveform: switchable rise time (front panel switch): 25µs (SMPTE), 50µs (EBU), or 1µs (square wave) Amplitude Distortion: less than 2% Connectors: XLR Female (2 inputs); Male (6 outputs) Pins: 3=high; 2=low; 1=ground Indicators: Red LED: power Green LED (2): Signal in Power: 9VAC @ 1A (8.5VAC @ 1.35A wall adapter supplied) Ground Lift Switch: Isolates chassis ground from signal ground Dimensions: 19” x 1 3 ⁄4” x 4 1 ⁄2” Weight: 2 1 ⁄2 lbs (w/o power supply or packing material) STRINGENT PACKINGThis will be professionally packed to make it to you in the same great condition. 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Price: 359.98 USD

Location: Davenport, Florida

End Time: 2024-03-09T11:08:34.000Z

Shipping Cost: 0 USD