Exp code	Date	Obs Time	Data Rate	Stations
U8189A	07 July 2008	00:00-1:28(UT)	128Mbps	Kashima34, Onsala60
U8189B		02:00-3:30(UT)	256Mbps
U8189C		04:00-5:30(UT)	512Mbps
U8189D		06:00-7:30(UT)	128Mbps
U8189E		08:00-9:30(UT)	256Mbps
U8189F		10:00-11:30(UT)	512Mbps

• 7 sessions (128,256,512,128,256,512,128) of e-VLBI Experiments were conducted between Kashima34-Onsala60(20m) baseline. First three sessions were failed because the telescope at Onsala was not working with schedules. Also the data transfer and observation mode mis-matching was caused, i.e. Data were transfered with 256Mbps with schedule of 128Mbps observation. After the recovery of telescope at Onsala, session E(256Mbps) and F(512Mbps) was successful.
  Two quick analysis were performed. One was automatic analysis scheme (analysis core was OCCAM) developed by T.Hobiger, and the other one was manual analysis with CALC/SOLVE operated by H.Takiguchi.
• Lessons from the previous experiment, Minimum SNR was increased and weak radio sources were excluded in source list used in automatic scheduling by 'sked'.
• Observation schedule were made by using 'sked' program developed by NASA/GSFC with setup Min-SNR=30(X-band), 25(S-band), MAX#Obs,MinTime, MINSCAN=30sec.,
• Clock parameter for each stations (GSP-FMT=): Kashima(-1.0us), Onsala(25.7us)
• By using the SNR plot of former experiments, 1417+385,1044+719, and 0602+673, were excluded from source list.
• Sessions: U8189A, B, C, and D were Failed because of two reasons.
  
  • Onsala station was operated without attending a operator. But the FS9 system was stopped due to trouble and the telescope has not been tracking radio sources.
  • $CODE entry of the schedule file format might not be appropriate for the intended observation mode. The data was sent out by 256Mbps where 128Mbps mode was intended.
• Session: U8189E,F
  • These two observations were successful.
  • Fringe were detected successfully for almost all scans. Quick analysis was performed. Processing Latency was as follows:

    Code	Mode	Software
    		OCCAM(Automatic)	CALC/Solve(Manual)
    u8189e	256Mbps	29 min.	1h40m
    u8189f	512Mbps	1h46m	2h16m

    OCCAM was modified for automatic iterative processing by T.Hobiger. CALC/SOLVE analysis was performed by H.Takiguchi.
  • Clock parameter were Onsala-Kashima = -25 us for 256Mbps, and -33.14us for 512Mbps, respectively. The clock difference of 8 us will be due to timing offset of Mark4/Mark5 Formatter.
  • Format data conversion was performed by different PC from the PC receiving the data from Onsala via Tsunami. The data was shared with NFS system and converted from Mk5 to K5. Although there were not significant improvement in processing speed even increasing the number of running task for conversion. The conversion software itself might have to be improved.

Exp code	Baseline ID	Bandwidth Synthesis	Analysis		Epoch		Estimated UT1-UTC (msec)
			CALC/SOLVE	OCCAM	CALC/SOLVE	OCCAM	CALC/SOLVE	OCCAM
U8189E	Kashim34-Onsala	komb (X) and komb (S)	spool file	result	54654.363194	54654.36470	-447525.5 +/- 8.1 us	-447495.2 +/- 10.6 us
U8189F	Kashim34-Onsala	komb (X) and komb (S)	spool file	result	54654.447222	54654.44873	-447576.4 +/- 6.7 us	-447547.3 +/- 7.2 us

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