----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Tue Aug 1 16:36:14 GMT 2006 Year: 06 Doy: 213 Observer: yasukawa WEATHER COMMENT: Tue Aug 1 16:36:27 GMT 2006 Clear, S wind 13 mph, temp 40 F. ___end___ **MKIV PROBLEM**: Tue Aug 1 16:37:35 GMT 2006 Found the likely suspect TO MK4 startup problem. Symptoms are consistent with Sunday and Monday summaries. Allen put probes on the synchro power supplies yesterday afternoon. This morning, 5VDC supply is reading 1.547VDC. + and - 15 VDC supplied reading supplying correct values. Barrel synchro pulses showing low, 1V p-p at 25% duty cycle. Barrel CW pulses normal for what it should be doing. ___end___ Tue Aug 1 16:42:31 GMT 2006 CHIP Start Patrol Tue Aug 1 16:42:46 GMT 2006 PICS Start Patrol SBM COMMENT: Tue Aug 1 16:42:55 GMT 2006 Observing. ___end___ PSPT COMMENT: Tue Aug 1 16:44:53 GMT 2006 Starting up. ___end___ PSPT COMMENT: Tue Aug 1 16:57:03 GMT 2006 Observing. ___end___ A NEW TAPE HAS BEEN PUT INTO KAIEE DLT DRIVE, Tue Aug 1 17:02:42 GMT 2006 **MKIV PROBLEM**: Tue Aug 1 17:40:01 GMT 2006 Back in late 2001, we had a similar barrel failure attributed to a degradation of the Semiconducter Circuits (SC) +/-15 and 5V PS. The 5V side wasn't supplying enough current to support the synchro circuits. To fix this, a separate 5V ps (in the black box mounted below the synchro panel) was added to boost the capacity. The additional unit now powers the Binary-BCD module and the original SC power supply mounted on the panel powers the Vernitech module. This is the supply that is now probably flaky, running at only 1.5V (the 5V side of the triple-output supply)in the early morning. ___end___ Tue Aug 1 17:46:29 GMT 2006 MKIV Start Patrol **MKIV PROBLEM**: Tue Aug 1 17:45:35 GMT 2006 Just turned around and noted that the SC power supply is now providing 5.07 VDC and the barrel is turning. Starting Patrol. ___end___ **MKIV PROBLEM**: Tue Aug 1 17:47:05 GMT 2006 Synchro LSB pulses now look normal, barrel is turning and barrel pulses look fine. Replacing the SC ps will require obtaining another unit -- no spares -- or rigging a temporary alternate supply. ___end___ Tue Aug 1 18:00:51 GMT 2006 CHIP LSD Tue Aug 1 18:01:18 GMT 2006 PICS Flat Tue Aug 1 18:02:34 GMT 2006 CHIP End LSD Tue Aug 1 18:02:43 GMT 2006 CHIP BiasLSD Tue Aug 1 18:03:26 GMT 2006 CHIP End BiasLSD Tue Aug 1 18:03:37 GMT 2006 CHIP Bias Tue Aug 1 18:03:47 GMT 2006 PICS End Flat Tue Aug 1 18:03:54 GMT 2006 PICS ReStart Patrol Tue Aug 1 18:04:19 GMT 2006 CHIP End Bias Tue Aug 1 18:04:32 GMT 2006 CHIP ReStart Patrol **PSPT PROBLEM**: Tue Aug 1 18:20:54 GMT 2006 Crashed at 1732, k/r ___end___ Tue Aug 1 18:28:05 GMT 2006 MKIV End Patrol Tue Aug 1 18:28:11 GMT 2006 MKIV Start Cal Tue Aug 1 18:46:54 GMT 2006 MKIV End Cal Tue Aug 1 18:47:00 GMT 2006 MKIV Start Patrol NICE MK4 IMAGE: 1816 NICE CHIP IMAGE: 1816 NICE PICSLIMB IMAGE: 1816 NICE PICSDISC IMAGE: 1816 Tue Aug 1 19:33:43 GMT 2006 CHIP End Patrol Tue Aug 1 19:33:57 GMT 2006 PICS End Patrol Tue Aug 1 19:34:34 GMT 2006 MKIV End Patrol **MKIV PROBLEM**: Tue Aug 1 19:32:17 GMT 2006 Barrel culprit appears to be Semiconductor Circuits MP1.5.500/2.15.100 encapsulated power supply. That unit has been replaced by MP35-070. Ron ordered a replacement and a spare for us. Replacement is in stock, spare will take 6 weeks. ___end___ Tue Aug 1 19:41:22 GMT 2006 MKIV Start Patrol COMMENT: Tue Aug 1 19:41:30 GMT 2006 Reconfigured dome shutter. ___end___ Tue Aug 1 19:41:37 GMT 2006 CHIP Start Patrol Tue Aug 1 19:41:47 GMT 2006 PICS Start Patrol MKIV COMMENT: Tue Aug 1 21:09:03 GMT 2006 Set up bench power supply next to KCC cabinet to allow temporary hookup of 5VDC @ 1A (using adjusted +32V@1A terminal rather than the 8V@3A terminal adjusted to 5V) to the +5V@500mA supply in the morning when the SC power supply is flaked-out. This will allow an extra 1-1.5 hours of observation early in the morning. ___end___ WEATHER COMMENT: Tue Aug 1 21:20:26 GMT 2006 In orographic clouds. ___end___ Tue Aug 1 21:21:32 GMT 2006 CHIP End Patrol Tue Aug 1 21:21:41 GMT 2006 PICS End Patrol Tue Aug 1 21:23:50 GMT 2006 MKIV End Patrol Tue Aug 1 21:34:06 GMT 2006 MkIV 17_46.rawmk4 18_31.rawmk4 19_19.rawmk4 20_07.rawmk4 20_48.rawmk4 17_49.rawmk4 18_37.rawmk4 19_22.rawmk4 20_10.rawmk4 20_51.rawmk4 17_52.rawmk4 18_43.rawmk4 19_25.rawmk4 20_13.rawmk4 20_54.rawmk4 17_55.rawmk4 18_47.rawmk4 19_28.rawmk4 20_16.rawmk4 21_00.rawmk4 17_58.rawmk4 18_49.rawmk4 19_31.rawmk4 20_19.rawmk4 21_04.rawmk4 18_01.rawmk4 18_52.rawmk4 19_41.rawmk4 20_22.rawmk4 21_07.rawmk4 18_04.rawmk4 18_55.rawmk4 19_44.rawmk4 20_25.rawmk4 21_10.rawmk4 18_07.rawmk4 18_58.rawmk4 19_47.rawmk4 20_28.rawmk4 21_14.rawmk4 18_10.rawmk4 19_01.rawmk4 19_50.rawmk4 20_31.rawmk4 21_17.rawmk4 18_13.rawmk4 19_04.rawmk4 19_53.rawmk4 20_34.rawmk4 21_20.rawmk4 18_16.rawmk4 19_07.rawmk4 19_56.rawmk4 20_37.rawmk4 c18_28.rawmk4 18_19.rawmk4 19_10.rawmk4 19_58.rawmk4 20_40.rawmk4 c18_34.rawmk4 18_21.rawmk4 19_13.rawmk4 20_01.rawmk4 20_42.rawmk4 c18_40.rawmk4 18_24.rawmk4 19_16.rawmk4 20_04.rawmk4 20_45.rawmk4