Preparatory Measurement WRS broadcast and WRS L1 synchronisation PPS alignment (Scope) WRS fabric time delay in different L1 ports (6,7,9)

Measured in advance = 24540 ps (consistent with length 500±1 cm) SC (patch A) WRS Broadcast Port 18 WR Calibrator Optical Box DC (patch D) WRS L1 Port 6 Port 7 Port 9 DC (patch C) SC (patch B) SFP KM3NeT WR reference calibrator All fiber patches (A,B,C,D) have equal length and, thus equal time delay Measured in advance = 24540 ps (consistent with length 500±1 cm) The WR Calibrator Optical box has measured time delays SC line = 11221 ps DC line =11251 ps Bidirectional line =

Results of the preparatory Measurement WRL1 PORT 6 and SFP ch21H on Calibrator CLB

Results of the preparatory Measurement WRL1 PORT 7 and SFP ch21H on Calibrator CLB

Results of the preparatory Measurement WRL1 PORT 9 and SFP ch21H on Calibrator CLB Average refers to SFP ch21H only

ARCA Shore Station Optical asymmetry measurement Compliant to requests of TDR v2 till May 2016

Measurement of Shore Station DC Path SC (shore station fiber) Optical Rack WRS Broadcast Port 18 MEOC FC/APC connector SC (patch B + FC/APC to LC fiber 1m) WR Calibrator Optical Box 5 dB DC (patch D) SC (patch A) 5 dB WRS L1 SFP Port 6 Port 7 Port 9 KM3NeT WR reference calibrator Measurement of Shore Station DC Path

Results of the asymmetry (SC path) Measurement WRL1 PORT 7 and SFP ch52C on Calibrator CLB (ARCA-DU001)

Results of the asymmetry (SC path) Measurement WRL1 PORT 6 and SFP ch51C on Calibrator CLB(ARCA-DU002) (Average) difference of only 270 ps among the two ports

Measurement of Shore Station DC Path SC (patch A) Optical Rack WRS Broadcast Port 18 MEOC FC/APC connector SC (shore station) DC (patch B + FC/APC to LC fiber 1m) WR Calibrator Optical Box DC (patch D) 20 dB 5 dB WRS L1 SFP Port 6 Port 7 Port 9 KM3NeT WR reference calibrator Measurement of Shore Station DC Path

Results of the asymmetry (DC path) Measurement WRL1 PORT 7 and SFP ch52C on Calibrator CLB (ARCA-DU001)

Results of the asymmetry (DC path) Measurement WRL1 PORT 6 and SFP ch51C on Calibrator CLB(ARCA-DU002) (Average) difference of 14752.7 ps among the two ports (ARCA DU001 delay is larger)

ARCA Shore Station RTT Cable measurement New request on May 2015 (TDR v3) Measure RTT_cable of DU Test Station and ARCA Shore Station indirect way to recover RTT_Cable

SFP SC (shore station fiber) Optical Rack WRS Broadcast Port 18 MEOC FC/APC connector SC (shore station fiber) patch B + FC/APC to LC fiber 1m (SC and DC) WR Calibrator Optical Box patch D(DC) patch A (SC) WRS L1 SFP Port 6 Port 7 Port 9 KM3NeT WR reference calibrator

Results of the Shore Station RTT Cable Measurement WRL1 PORT 7 and SFP ch52C on Calibrator CLB(ARCA-DU002)