90 pulse width calibration

90 pulse width calibration

• Place the sample in the magnet, initiate a new file in edc, and load the 1H parameter file (par).

• Perform lock, shim, rga, and atmm for tuning and matching.

• In eda or the command line, modify parameters:

  • Change pulprog=zg30 to pulprog=zg.

  • Set p1=2u, ns=1, ds=0.

  • Execute zg, ft, apk (note: apk is used for reference phase).

  • Alternatively, enter the phase mode to manually adjust the phase, ensuring it is set positively as a reference phase.

Note: Reference phase adjustment should not use the pk command.

Note:  Throughout the entire process, refrain from using rga arbitrarily; rg needs to 

           remain consistent. 

       Adjust the parameters for B662 or A525:

    For B662: Set p1=29-30u.

    For A525: Set p1=31-32u (estimated value for 180 degrees).

    Execute zg, ft, pk, and observe the positive and negative phase changes of the   

    peak.

If the positive phase is higher:

Increase the value of p1u until the positive phase height is approximately equal to the negative phase.

Divide the obtained value by 2 to get the 90 pulse width.

Adjustments during the search for the 180 pulse width should use the pk command.

If the negative phase is higher:

Decrease the value of p1u until the positive phase height is approximately equal to the negative phase.

Divide the obtained value by 2 to get the 90 pulse width.

      Notes:Adjustments during the search for the 180 pulse width should use the pk 

                 command.

   Notes:The phase adjustment for each pulse width change should be in the range 

               of 0.2u to 1u.

The pulse width values for each par file can be found in eda.

B662: getprosol 1H (14.5) -10.28 (replace the brackets with the correct 90 pulse width, without brackets).

A525: getprosol 1H (15.5) -9.96 (replace the brackets with the correct 90 pulse width, without brackets).

90 pulse width calibration

樣品置入磁體中，edc 建立新檔案，讀進1H的參數檔(par)，

作好 鎖場、勻場、rga 、atmm 作 tuning及matching,

在eda 或 指令列中 修改參數, 將 pulprog=zg30 改為 pulprog=zg,

p1= 2u, ns = 1, ds=0,  zg,  ft,  apk,  (注意: 是 apk ~參考相位用 )

又或者進入phase mode 以手動方式調整相位，

此時相位應將其調為正向，當作參考相位。

  注意 : 參考相位不能用pk 指令去調整，

  注意 : 以下整個過程中不能再任意使用rga,  rg需要始終一致

設定(B662) p1=29~30u,   或(A525) p1=31~32u (180度之預估值)

zg, ft, pk 後觀察峰的相位正負的消長；

若正相位比較高

則再增加 p1的u 數，

至到zg, ft, pk 後正相位的高度近似於負相位的高度，

所得之值除以2即為90 脈寬。

注意 : 尋找180脈寬過程中的相位調整一律用pk

(惟參考相位p1=2u 除外，參考相位使用 apk )

若負相位比較多

則再減少 p1的u 數，

至到正相位的高度近似於負相位的高度。

所得之值除以2即為90 脈寬。

注意 : 尋找180脈寬過程 的相位調整一律用pk。

(參考相位(p1=2u) 除外)

注意: 每次 脈寬 的增減值以0. 2u~1u為宜。

(在eda 中可找到 每個par 中p1 相關pulse width值)

B662 ; getprosol 1H (14.5) -10.28 (括號內應填入正確90脈寬, 括號去除)

A525 ; getprosol 1H (15.5) - 9.96  (括號內應填入正確90脈寬, 括號去除)