Date: Wed, 25 Mar 2015 15:01:48 -0400
Hello everyone,
We have been observing a 'glitch' in our 1H fids as seen below. The result
of this glitch, depending on how early in the fid it appears, is what
appears in the spectrum as signal clipping.
Many have pointed accusing fingers at the PTS synthesizer. But an
inspection of the capacitors on the PTS power supply shows no signs of
swelling or other issues.
Most recently the 'glitch' was shown to the High Hoo Hoo at Agilent - Al
Ramirez - and he said it was likely a 'receive gain' or 'T/R gating'
issue. I assume both of these occur in the preamp?
Other suggestions have been the ADC board, Receiver or DAC board.... Any
advice or input would be greatly appreciated.
-- Ken Knott Department of Chemistry Analytical Services Virginia Tech (540)267-6502 (Cell) (540)231-0885 (Office)
(image/png attachment: Glitch_in_FID__1_.png)
(image/png attachment: Glitch_in_FID3__1_.png)