改變測試範圍 - Changing Detection range

Changing the Test Range:

If the test range exceeds the standard range (17 ppm to -5 ppm) and a larger detection range is needed (e.g., 200 ppm), o1p and sw (ppm) can be adjusted to achieve the goal.

Experimental Procedure:

1. (Lift, lock, shim)

2. Use rpar bbfo_h1 all.

3. Determine the bandwidth of the test range, sw (ppm) = Chemical shift at the far left (downfield) f1p - Chemical shift at the far right (upfield) f2p.

4. Set o1p = (f1p + f2p) / 2, where o1p is the center position of the test range.

5. getprosol

6. Run receiver gain adjust (rga).

7. Set ns to 1; acquire zg (get a spectrum).

8. Check the range with fp.

9. Set ns to 80.

10. Acquire zg again.

Note 1: o1 = o1p is the observed frequency of channel 1, which represents the center position of the test range.

Note 2: sw = sweep width (ppm/Hz), which represents the full spectral width.

改變測試範圍

測試範圍若超過制式之範圍(17 ppm to -5 ppm)，

需要更大之偵測範圍時(例如 200 ppm)，

可改變 o1p 及 sw (ppm) 以達成目的。

實驗步驟:

1) (lift, lock, shim)

2) rpar  bbfo_h1  all

3) 預定測試範圍頻寬 sw (ppm) = 最左邊 (downfield) 之化學位移 f1p - 最右邊 (upfield) 之化學位移 f2p  

4) o1p = (f1p + f2p) / 2，o1p 為測試範圍之中心位置

5) getprosol

6) rga

7) ns 1; zg

8) fp (檢查一下範圍是否正確)

9) ns 80  

10) zg

註1：o1 = o1p 為測試範圍之中心位置 observed frequency of channel 1

註2：sw = 全譜寬 sweep width (ppm/Hz)