-------- Original Message -------- Subject: RES: [IVS-ops] r4164 ($05MAR10XE) Correlation report Date: Wed, 23 Mar 2005 21:33:38 -0300 From: Adeildo Sombra To: Ed Himwich CC: A. M. P. de Lucena Hello Ed. We really had a lot of troubles on this last experiment, the temperature in the receiver box raised up and we had to repair the controller. Our read heads are down as you noticed but we have already received a 50% used set and are going to install it. This will be improved. The "no fringes" sections were surely due to a problem in the formatter. A burnt connector caused a sync error. My fellow tried to fix this problem during the experiment but the error kept happening. This was fixed only on this last week. Best regards. Adeildo Sombra. Fortaleza VLBI team. ----- Original Message ----- From: "Ed Himwich" To: "Fortaleza VLBI team" Cc: ; "Sessions" ; ; ; "Kerry Kingham" Sent: Wednesday, March 23, 2005 4:04 PM Subject: Re: [IVS-ops] r4164 ($05MAR10XE) Correlation report > Dear Fortaleza Team, > > vlbi@CygX3.usno.navy.mil wrote: > > > Fortaleza (Ft/F): OK Poor playback on reverse passes on third tape. > > Channel X2 ("h") dropped > > Upper 4 X-band channels often low amplitude, some > > "G" codes > > started late at 069-2052 due to temperature > > controller problem > > missed 070-0320 to 070-0341 due to formatter > > problem > > no fringes 069-2202 to 2324, 069-2354 to 070-0127 > > and 070-0245 to 0320 > > There are multiple problems and some are unexplained, particularly the > last ones for "no fringes". Any comments on those? > > Apparently, the correlator did not like the reverse playback, but only > on one tape. I notice from your log that your parity checks all fail. > Has you read head died? > > Thanks, Ed