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Dog-Legs Status. Forward Opto Tests. Tests of BER for forward plug-in opto on Freiburg Kapton hybrids with 12 ABCDs. Kii with 12 ABCDs and detector. Bonded at Glasgow. Kiii with 12 ABCDs bonded at RAL Taiwan Opto-package V07, mounted on plug-in opto PCB. Measurements performed.
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Dog-Legs Status Forward Opto Tests • Tests of BER for forward plug-in opto on Freiburg Kapton hybrids with 12 ABCDs. • Kii with 12 ABCDs and detector. Bonded at Glasgow. • Kiii with 12 ABCDs bonded at RAL • Taiwan Opto-package V07, mounted on plug-in opto PCB. • Measurements performed. • Scan BER for TTC link versus optical signal (measure PIN current amplitude). • Repeat with VCSELs pulsed at 20 MHz (clock feedthrough). T. Weidberg SCT Links
Conclusions • Plug-in opto on Kii works very well. No evidence for x-talk but test inconclusive because VCSELX channel of VDC broken. • Both channels of VCSEL produced 20 MHz clocks on Kiii. No evidence of x-talk. • Next Tests: • Program chips to be in data taking mode and send triggers and measure BER. • Longer runs to measure BER at higher optical power. T. Weidberg SCT Links