----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Thu May 14 16:31:50 GMT 2009 Year: 09 Doy: 134 Observer: koon WEATHER COMMENT: Thu May 14 16:32:33 GMT 2009 Clear sky, wind=3mph from the SE, temp=48F. ___end___ COMMENT: Thu May 14 16:33:19 GMT 2009 No regular obs while we work on the mk4, we'll need the dome closed and we'll need to move the spar around a lot. Darryl and Allen are both at MLSO today. ___end___ PSPT COMMENT: Thu May 14 16:44:06 GMT 2009 obs ___end___ Thu May 14 18:51:42 GMT 2009 MKIV Start Patrol Thu May 14 18:57:32 GMT 2009 MKIV Start Patrol Thu May 14 19:27:27 GMT 2009 CHIP Start Patrol Thu May 14 19:28:10 GMT 2009 PICS Start Patrol **MKIV PROBLEM**: Thu May 14 21:50:48 GMT 2009 Today we made great progress. On Tuesday I noticed that the LVAL signal at the transformation board looked weaker than the signal coming out of the camera, I wasn't sure if it was a bad receiver chip at U35 or a bad cable or both. Today we checked the signals and found them to be the same frequency but the LVAL at the camera is about 4 vdc and it is about 0.4 vdc downstairs, disconnecting the jumpers at P281 on the trans board isolated the LVAL signals from the receiver chip at U35 and the LVAL voltage went up to normal. The output on pin 11 on the receiver chip at U35 was stuck high and showed no CLVAL signal which should have been similar to LVAL, so that chip is defective and pulling down the voltage of LVAL as measured at pins 39 and 40 on J29 on the trans board. We reset the BIN jumpers which I had previously left changed so the barrel would behave, so those are now back to normal, then we removed the jumpers at P281 and started up KCC without any stalls, we tried Patrol and Viola! we got semi-normal scans, the corona is very faint and only visible on the processed images not on the realtime scan display, and the barrel is behaving as are all the code as far as we can tell. Allen traced the CLVAL output that went from the receiver chip to the 1X LED on the trans board (which is lit by the way) and down to one of the 1160A boards in the KCC to be available as an error indication signal, he's not sure it that is being used for anything so we are currently leaving the jumpers at P281 off to disable that circuit and allow data gathering and barrel movement. Back on Tuesday I asked Andy if there were any of these receiver chips available at Boulder to be sent to us (DS26C32ATN) and he said there weren't any there, so today I ordered some from Digikey and they should be here by early next week, until then we'll operate this way. Allen will removed the bad chip and solder in a socket for a new chip on Saturday, I'll re-align the camera and continue with the camera installation process. When the new chips come in we'll install a new one at U35 and replace the jumpers at P281. ___end___ WEATHER COMMENT: Thu May 14 22:27:07 GMT 2009 High clouds, low clouds, and vog are converging on us. ___end___ MKIV COMMENT: Thu May 14 22:28:41 GMT 2009 We have the 4 boxes of manuals and boards that Andy sent, they are here at MLSO ___end___ Thu May 14 23:00:34 GMT 2009 CHIP LSD Thu May 14 23:02:07 GMT 2009 CHIP End LSD Thu May 14 23:02:18 GMT 2009 CHIP BiasLSD Thu May 14 23:02:57 GMT 2009 CHIP End BiasLSD Thu May 14 23:03:05 GMT 2009 CHIP Bias Thu May 14 23:03:36 GMT 2009 CHIP End Bias Thu May 14 23:03:43 GMT 2009 CHIP ReStart Patrol NICE CHIP IMAGE: 1933 NICE PICSDISC IMAGE: 1934 NICE PICSLIMB IMAGE: 1934 NICE MK4 IMAGE: 1915 Fri May 15 00:13:11 GMT 2009 CHIP End Patrol Fri May 15 00:14:22 GMT 2009 PICS End Patrol Fri May 15 00:15:05 GMT 2009 PICS Start Fast Monitor Fri May 15 00:17:42 GMT 2009 PICS End Monitor Fri May 15 00:25:37 GMT 2009 MkIV 00_03.rawmk4 19_50.rawmk4 20_55.rawmk4 21_59.rawmk4 23_04.rawmk4 00_07.rawmk4 19_53.rawmk4 20_58.rawmk4 22_02.rawmk4 23_07.rawmk4 00_10.rawmk4 19_56.rawmk4 21_01.rawmk4 22_05.rawmk4 23_10.rawmk4 00_13.rawmk4 19_59.rawmk4 21_04.rawmk4 22_08.rawmk4 23_13.rawmk4 18_57.rawmk4 20_02.rawmk4 21_06.rawmk4 22_11.rawmk4 23_16.rawmk4 19_00.rawmk4 20_05.rawmk4 21_09.rawmk4 22_14.rawmk4 23_19.rawmk4 19_03.rawmk4 20_08.rawmk4 21_12.rawmk4 22_17.rawmk4 23_22.rawmk4 19_06.rawmk4 20_11.rawmk4 21_15.rawmk4 22_20.rawmk4 23_25.rawmk4 19_09.rawmk4 20_14.rawmk4 21_18.rawmk4 22_23.rawmk4 23_28.rawmk4 19_12.rawmk4 20_17.rawmk4 21_21.rawmk4 22_26.rawmk4 23_31.rawmk4 19_15.rawmk4 20_20.rawmk4 21_24.rawmk4 22_29.rawmk4 23_34.rawmk4 19_18.rawmk4 20_22.rawmk4 21_27.rawmk4 22_32.rawmk4 23_37.rawmk4 19_21.rawmk4 20_25.rawmk4 21_30.rawmk4 22_35.rawmk4 23_39.rawmk4 19_24.rawmk4 20_28.rawmk4 21_33.rawmk4 22_38.rawmk4 23_42.rawmk4 19_27.rawmk4 20_31.rawmk4 21_36.rawmk4 22_41.rawmk4 23_45.rawmk4 19_30.rawmk4 20_34.rawmk4 21_39.rawmk4 22_44.rawmk4 23_48.rawmk4 19_32.rawmk4 20_37.rawmk4 21_42.rawmk4 22_46.rawmk4 23_51.rawmk4 19_35.rawmk4 20_40.rawmk4 21_45.rawmk4 22_49.rawmk4 23_54.rawmk4 19_38.rawmk4 20_43.rawmk4 21_48.rawmk4 22_52.rawmk4 23_57.rawmk4 19_41.rawmk4 20_46.rawmk4 21_51.rawmk4 22_55.rawmk4 19_44.rawmk4 20_49.rawmk4 21_54.rawmk4 22_58.rawmk4 19_47.rawmk4 20_52.rawmk4 21_56.rawmk4 23_01.rawmk4