19F RX Option
60
Spectrospin AG
Daedalus Lock Manual
suppresses the 10 MHz reference and other low frequency disturbances. The lower
cutoff frequency is 30 MHz (f
2H
@ 200MHz), while the upper cutoff frequency is
115MHz (f
2H
@ 750MHz). The lowpass is built as a third order filter.
Figure 14: X_Option Block Diagram
Mixer
The X_REC and X_LO- signal are processed in a mixer (Mini-Circuit: LRMS 2D)
to IF. The capacitor at the RF Input improves the mixer matching for the X_REC In-
put. X_REC and X_LO are DC coupled.
LRMS_2D data: Conversion Loss: typ. 7.5dB, max 10dB; IF: DC-1000MHz
Attenuator
The attenuator following the mixer matches the mixer to 50 Ohm and suppresses the
crosstalk between the LO and the RF path.
Highpass
The second order highpass suppresses the 10 MHz reference and other low frequen-
cy interference. A 10 MHz signal is suppressed by more than 30 dB. The cutoff fre-
quency is 30 MHz (f
2H
@ 200MHz).
Buffer Amplifier
The buffer amplifier decouples both the high and low pass filter and compensates
the mixer, filter and attenuator losses.
The unit employed is a MSA 0186 from Avantek. Its operating resistance is 560
Ohm. The DC working value of the MSA 0186 is chosen such that the DC voltage at
the output is 5V and has a current of 17.8mA. The supply voltage is +15V
(LOCK_P15V).
Data for the MSA 0186: Gain: 17dB @ 0.5GHz; Noise Figure: 5.5dB @ 0.5GHz
Lowpass Filter
The third order lowpass filter suppresses the 19F-LO (X_LO) and 19F-RF (X_REC)
signals. The cutoff frequency is 115MHz. Frequencies below 188MHz (f
19F
@
200MHZ) are suppressed by more than 40dB.
DC Decoupling
The X_OPTION is DC decoupled with a 10nF condensor.
LP
HP
Mixer
Amp
DC-BLOCK
X_REC
X_LO
Mixer
Attenuator
Highpass
Buffer Amplifier
Lowpass
DC-Decouplings
X_IF
0dB@30MHz
0dB@115MHz
A=17dB
NF=5.5dB
A=-8dB
Summary of Contents for DAEDALUS
Page 1: ...BRUKER BRUKER SPECTROSPIN AG SERVICE MANUAL DAEDALUS LOCK Version BSMS 004 ...
Page 6: ...Contents 6 Spectrospin AG Daedalus Lock Manual ...
Page 14: ...8 Spectrospin AG Daedalus Lock Manual ...
Page 16: ...10 Spectrospin AG Daedalus Lock Manual ...
Page 26: ...General Description 20 Spectrospin AG Daedalus Lock Manual ...
Page 36: ...Operation 30 Spectrospin AG Daedalus Lock Manual ...
Page 56: ...Lock Transmitter 50 Spectrospin AG Daedalus Lock Manual ...
Page 64: ...Lock Receiver 58 Spectrospin AG Daedalus Lock Manual ...
Page 68: ...19F RX Option 62 Spectrospin AG Daedalus Lock Manual ...
Page 85: ...Installation Daedalus Lock Manual Spectrospin AG 79 Installation 11 2 ...
Page 86: ...Z0 Compensation Option 80 Spectrospin AG Daedalus Lock Manual ...
Page 90: ...Technical Data 84 Spectrospin AG Daedalus Lock Manual ...
Page 92: ...Trouble Shooting 86 Spectrospin AG Daedalus Lock Manual ...
Page 98: ...BSMS service tool 92 Spectrospin AG Daedalus Lock Manual ...
Page 107: ...Error Descriptions Daedalus Lock Manual Spectrospin AG 101 ...
Page 108: ...Lock Error Messages 102 Spectrospin AG Daedalus Lock Manual ...
Page 114: ...Appendix 108 Spectrospin AG Daedalus Lock Manual ...
Page 122: ...116 Spectrospin AG Daedalus Lock Manual ...
Page 123: ...Daedalus Lock Manual Spectrospin AG 117 Lock Transmitter Index B ...
Page 124: ...118 Spectrospin AG Daedalus Lock Manual ...
Page 125: ...Daedalus Lock Manual Spectrospin AG 119 Lock Transmitter Index C ...
Page 126: ...120 Spectrospin AG Daedalus Lock Manual ...
Page 127: ...Daedalus Lock Manual Spectrospin AG 121 19F Transmitter Option Index A ...
Page 128: ...122 Spectrospin AG Daedalus Lock Manual ...
Page 129: ...Daedalus Lock Manual Spectrospin AG 123 Lock Receiver Index C ...
Page 130: ...124 Spectrospin AG Daedalus Lock Manual ...
Page 131: ...Daedalus Lock Manual Spectrospin AG 125 Lock Receiver Index D E ...
Page 132: ...126 Spectrospin AG Daedalus Lock Manual ...
Page 133: ...Daedalus Lock Manual Spectrospin AG 127 19F Receiver Option Index A ...
Page 134: ...128 Spectrospin AG Daedalus Lock Manual ...
Page 135: ...Daedalus Lock Manual Spectrospin AG 129 Lock Controller Index A ...
Page 136: ...130 Spectrospin AG Daedalus Lock Manual ...
Page 137: ...Daedalus Lock Manual Spectrospin AG 131 Lock Controller Index B C ...
Page 138: ...132 Spectrospin AG Daedalus Lock Manual ...
Page 139: ...Daedalus Lock Manual Spectrospin AG 133 Lock RS232 Biggy Board ...
Page 140: ...134 Spectrospin AG Daedalus Lock Manual ...
Page 141: ...Daedalus Lock Manual Spectrospin AG 135 Z0 Compensation Option ...
Page 142: ...136 Spectrospin AG Daedalus Lock Manual ...
Page 143: ...Daedalus Lock Manual Spectrospin AG 137 Cables ...
Page 144: ...138 Spectrospin AG Daedalus Lock Manual ...
Page 145: ...Daedalus Lock Manual Spectrospin AG 139 Test Equipment Index A ...