Monday, 4 March 2013

Timecode Levels

For most of our products the timecode output is designed for the analog world. The level is fixed at 1.2v Peak to Peak with a 40uSec rise time and  rounded corners in order to minimize crosstalk  Recently we have noticed a number on computer based systems that require a higher level on the timecode output. Where I have fitted a gain resistor this is quite easy, just add a suitable resistor, where this is not possible the simplest solution is to double up the diodes as shown in the diagrams below .  
RM-6 Generator Ouput with two extra 1N4146 Didoes Added

TC-5 Timecode output with R10 = 10K for 6dB gain

You can find most circuits at the following url

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