NOTES ON JITTER CLEANER BOX - G. Visser 1/23/2015

“barrel” to bypass this box keeping same cables and timing (within ~1 ns)

POWER INPUT CABLE ON REARred+, blk- 8-12VDC, 170mA

At RCC2 receiver output (U49 pin 5)Extreme deterministic jitter input case, 2 cycles of different duty cycle, repeat

As above, run through jitter cleaner box

At RCC2 receiver output (U49 pin 5)Pseudorandom jitter input case (AFG3252, noise PM 20° deviation)

As above, run through jitter cleaner box

Delay measurements:• The 5 foot patch cable is 8.5 ns• The jitter cleaner box delay – “barrel” adapter delay is about 1 ns

Patch cable should be left in place, and jitter cleaner replaced with “barrel”, if this thing should be removed during the course of the run. In this way, STAR trigger timing shift is only 1 ns, which should be ok.

Input clock (splitter tap) to output clock, cables w/ “barrel”

Input clock (splitter tap) to output clock, jitter cleaner

Note: what you see here is not jitter of the output clock. Input and outputlong term timing errors contribute to this. It looks normal and reasonable I think.Real collision jitter (from the position in diamond) will be much bigger than this, right? So then this cannot matter anyway.

+3.3 MUST be very low noise!

POWER:input through 10 Ω resistor (for noise filter),then LT1764A – 3.3 w/ input & output tantalum caps