X 19F/1H 29 13 X F/ H - University of Warwick€¦ · Slide on the shielding tube and lock it 3....
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Bruker Elektronik GmbH nfo 04.10.2009 Operating instructions for the probe PH MASDVT850W6 BL2.5 N-C/F/H (H13894/0001) Listening of the available frequency range Changing and modifications 1. In case of operating in 15 N experiments it is necessary to install an additional shunt capacitor of 47pF parallel to the X-tuning capacitor (only for 15 N) as shown in Figure 1 and set the short circuit screw at the /-tube as labeled to the 15 N- 2 H position, see Figure 2. The same position is used up to 2 H (130MHz). In the other case in the upper X-range (169-213MHz), e.g. 29 Si - 13 C/ 19 F/ 1 H set the short circuit screw as labeled to the 29 Si - 13 C position, see Figure 3. Do not turn this screw too far in order to avoid bending or damage of the inner conductor 2. Slide on the shielding tube and lock it 3. First tune and match 19F and 1 H one after another, and then X. Repeat this procedure for fine tuning. Figure 1: position of the shunt capacitor Figure 2: short circuit screw in 15 N- 2 H position Figure 3: short circuit screw in 29 Si- 13 C position Figure 4: tuning and matching rod for 19 F and 1 H 15 N- 2 H λ/4 mode shunt cap only for 15 N X 19 F/ 1 H f/MHz f/MHz 15 N- 2 H / 19 F/ 1 H 86 – 130 800/850 29 Si- 13 C λ/4 mode without shunt capacitor X 19 F/ 1 H f/MHz f/MHz 29 Si- 13 C / 19 F/ 1 H 169 – 213 800/850 Tuning 19 F Common matching for 19 F and 1 H Tuning 1 H
Transcript of X 19F/1H 29 13 X F/ H - University of Warwick€¦ · Slide on the shielding tube and lock it 3....
Bruker Elektronik GmbH nfo 04.10.2009
Operating instructions for the probe PH MASDVT850W6 BL2.5 N-C/F/H (H13894/0001)
Listening of the available frequency range
Changing and modifications
1. In case of operating in 15N experiments it is necessary to install an additional shunt capacitor of 47pF parallel tothe X-tuning capacitor (only for 15N) as shown in Figure 1 and set the short circuit screw at the /-tube as labeledto the 15N-2H position, see Figure 2. The same position is used up to 2H (130MHz).In the other case in the upper X-range (169-213MHz), e.g. 29Si -13C/19F/1H set the short circuit screw as labeledto the 29Si -13C position, see Figure 3.Do not turn this screw too far in order to avoid bending or damage of the inner conductor
2. Slide on the shielding tube and lock it3. First tune and match 19F and 1H one after another, and then X. Repeat this procedure for fine tuning.
Figure 1: position of the shunt capacitor Figure 2: short circuit screw in 15N-2H position
Figure 3: short circuit screw in 29Si-13C position Figure 4: tuning and matching rod for 19F and 1H
15N-2H λ/4 mode shunt cap only for
15N
X 19F/1Hf/MHz f/MHz
15N-2H /19F/1H 86 – 130 800/850
29Si-13C λ/4 mode without shunt capacitor
X 19F/1Hf/MHz f/MHz
29Si-13C /19F/1H 169 – 213 800/850
Tuning 19F
Common matchingfor 19F and 1H
Tuning 1H
H13894/0001 Installation of the shunt capacitor
First loosen the fixing screw of the clamb and insert the lead of the shunt capacitor between the clamb and the X-tuning capacitor and fix the screw again
Fixing the upper lead of the shunt cap. with a M2.5 screw at the top of the X – tuning capacitor
H13894/0001 Changing between 15N- 2H - λ/4 and 29Si -13C - λ/4
92.8 – 130.515N – 2Hwithout shunt
85.0 – 92.715N – 2Hwith shunt
frequency range f/MHzλ/4 - position
168.9 – 218.029Si – 13Cwithout shunt
frequency range f/MHzλ/4 - position
Note: The optimized common matching of 19F and 1H depends on the X-channel adjustment, therefore two different λ/4 – positions are needed
