> AMX-600: Calibration of the proton pulse is asymmetric. For ex: if HL1=3
> and using PAROPT with p1 starting at 1u and incremented by 1u for 32
> increments. The 90 maximum is reached early at about 8u and 180 is at
> about 20u. The pulse width I usually get is 10u for 90 pulse. I see this
> at all different power levels of the proton e-coupler. It is really bad
> at low power levels like HL1=40 for a 1ms pulse for saturating water in
> watergate sequence. The 90 I get in the last case is at about 700u
> instead of 1000u, but 180 is at 2000u.
I normally try to find the 360 degree pulse to avoid saturation or truncation
effects. The real 90 would be a quarter of this.
> AM-250: Suddenly we get memory full error after 4 scans and just garbage.
> We have rebooted the system, but of no use.
Perhaps too high gain (rg)?
73, Peter
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| Peter Lundberg Ph: (+46 90) 16 59 73 |
| Physical Chemistry Fax: (+46 90) 16 77 79 |
| U of Umea Email: PeterL@chem.umu.se |
| S-901 87 Umea Efax: PeterLundberg@f090167779.fax.sunet.se |
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C:\ONGRTLNS.W95 Abort,retry,ignore?