Bruker DAEDALUS User manual

BRUKER
BRUKER - SPECTROSPIN AG
SERVICE MANUAL
DAEDALUS - LOCK
Version BSMS 004

The information in this manual may be altered without notice.
Spectrospin AG accepts no responsibility for actions taken as a result of use of this
manual. Spectrospin AG accepts no liability for any mistakes contained in the man-
ual, leading to coincidental damage, whether during installation or operation of the
instrument. Unauthorised reproduction of manual contents, without written permis-
sion from the publishers, or translation into another language, either in full or in
part, is forbidden.
This Manual was written by
C.Gosteli; B.Jud; A.Kuster; A.Schwilch, S.Leemann, C.Schumacher
Translated and Desktop Published by
Craig M. Brumby and Beat Jud
Spectrospin AG, CH-8117 Fällanden
©Nov. 1993: Spectrospin AG
Fällanden, Switzerland
Modified for BASH 2.0 by U. Roos - December 1996
P/N: Z31130
DWG-Nr.: 806 004

Chapter
Daedalus Lock Manual Spectrospin AG 3
Contents
A List of Index .......................................................................... 1
Introduction ........................................................................... 9
2 General Description ............................................................ 11
2.1 Introduction ................................................................................ 11
2.2 Features ...................................................................................... 11
2.3 Daedalus Lock Catchwords (for Bash) ........................................ 12
2.4 Design ........................................................................................ 15
2.5 Installation .................................................................................. 17
Base Version (Deuterium) .......................................................17
3 Operation ............................................................................ 21
3.1 Lock Parameters ......................................................................... 21
3.2 Manual Lock-In .......................................................................... 22
3.3 Optimal Operation with the Digital Lock .................................... 23
3.4 Drift Calibration Procedure ......................................................... 25
3.5 Lock Keyboard Menu Tree .......................................................... 27
3.6 Lock-Hold Operation .................................................................. 28
4 19F Lock Option ................................................................. 31
4.1 Introduction ................................................................................ 31
4.2 19F-Option Installation ............................................................... 31
4.3 19F-Wiring ................................................................................. 34
4.4 19F-Operation ............................................................................. 35
5 Lock Transmitter ................................................................ 37
5.1 Function Description ................................................................... 38
General ...................................................................................38
Digitalization of the 10 MHz Reference ................................. 39
60 MHz Multiplier for DDS Clock Frequency .........................39
N x 10 MHz Multiplier ...........................................................40
Direct Digital Synthesizer (DDS) ............................................40
Quadrature Mixer ................................................................... 41
Temperature Unit Modulation .................................................41
Attenuator and Switching ........................................................41
Digital-Analog Converter (DAC) ............................................ 42
PFP / FFA-Mode Switching ....................................................42
FFA Amplifier ........................................................................ 43
Pulse-Section ..........................................................................43
Print (Hardware) Version ....................................................... 49
6 19F TX Option .................................................................... 51
6.1 Function Description ................................................................... 51
General ...................................................................................51
19F TX Option Block Diagram ...............................................51

Contents
4 Spectrospin AG Daedalus Lock Manual
19F_LO Synthesis .................................................................. 52
Mixer ......................................................................................52
19F_TR Signal Path ................................................................52
IIC Bus EEPROM ...................................................................52
19F Lock Operation ................................................................52
7 Lock Receiver ..................................................................... 53
7.1 Function Description ....................................................................54
Concept ..................................................................................54
High Frequency -Section (HF Part) ........................................ 55
Low Frequency Section (LF Section) ..................................... 56
Acquisition .............................................................................56
Print (Hardware) Version ........................................................57
8 19F RX Option .................................................................... 59
8.1 Function Description ................................................................... 59
Print (Hardware) Version ........................................................61
8.2 Connecting the 19F RX-Option ................................................... 61
9 Lock Controller .................................................................. 63
9.1 Function Description ................................................................... 64
General ...................................................................................64
Microcontroller .......................................................................64
Address Decoder in the Lock System ..................................... 65
VME - Interface ......................................................................66
Reset and Power up Logic .......................................................66
RCP- Interface ........................................................................67
DSP- Host Interface ................................................................67
DSP-Section (Hardware) ........................................................ 67
DSP-Section (Software) ......................................................... 68
Display Data ...........................................................................68
Current Source ........................................................................69
Serial Interface in the Locksystem ..........................................70
Lock- Software .......................................................................72
9.2 Jumper Setting ............................................................................ 73
9.3 Print (Hardware) Version ............................................................ 74
10 Lock RS232 Piggy Board .................................................... 75
10.1 General ....................................................................................... 75
10.2 Upgrade to ECL01 ...................................................................... 75
11 Z0-Compensation (Option) ................................................. 77
11.1 General Description .................................................................... 77
11.2 Installation ...................................................................................79
12 Technical Data .................................................................... 81
12.1 Lock Receiver Data ..................................................................... 81
12.2 Lock 19F Receiver Option Data .................................................. 81
12.3 Lock Transmitter Data ................................................................ 82
12.4 Lock 19F Transmitter Option Data .............................................. 83
12.5 Lock Controller Data .................................................................. 83

Contents
Daedalus Lock Manual Spectrospin AG 5
13 Trouble Shooting ................................................................. 85
13.1 Self Test ...................................................................................... 85
13.2 Test Equipement ......................................................................... 85
14 BSMS service tool ............................................................... 87
15 Lock Error Messages .......................................................... 93
15.1 Error Descriptions ....................................................................... 93
A Appendix ........................................................................... 103
A.1 Technical Data for the H0 Coil .................................................. 103
A.2 Regulating Range ...................................................................... 103
A.3 Frequency Generation ................................................................104
A.4 Chemical Shifts ..........................................................................106
A.5 List of Current Bruker NMR Instruments .................................. 107
A.6 List of Abbreviations Used ........................................................ 107
B List of Figures ................................................................... 109
C List of Tables ..................................................................... 111
D Schematics ......................................................................... 113

Contents
6 Spectrospin AG Daedalus Lock Manual

Chapter
Daedalus Lock Manual Spectrospin AG 1
List of Index A
Numerics 19F Chemical Shifts ....................................................................................106
19F RX Option .................................................................................31, 51, 59
19F TX Option..............................................................................................51
19F_LO signal..............................................................................................32
19F_LO-signa...............................................................................................52
19F-Operation...............................................................................................35
19F-Option Installation..................................................................................31
19F-Wiring...................................................................................................34
2H Chemical Shifts .....................................................................................106
60MHz Multiplier .........................................................................................38
80535 microprocessor....................................................................................15
AA/D converter...............................................................................................56
Absorption....................................................................................................56
Acetone-d6...................................................................................................23
Acquisition...................................................................................................56
Acquisition-Parameters..................................................................................35
Active Bandpassfilter ....................................................................................56
ADC diagnostic.............................................................................................90
AGC Amplifiers............................................................................................41
applications software.....................................................................................93
ASX.............................................................................................................93
Attenuator ....................................................................................................60
Auto Gain.....................................................................................................21
Auto Lock ....................................................................................................21
Auto Phase ...................................................................................................21
Auto Power ..................................................................................................21
Autolock ................................................................................................22, 91
Autolock H0 Calibration................................................................................91
Autolock Mode .............................................................................................88
BBaudrate.......................................................................................................69
beep (buzzer)................................................................................................26
Blackman Window ............................................................................11, 43, 82
Bloch...........................................................................................................11
Boot EPROM................................................................................................93
BSMS Keyboard ...........................................................................................21
BSMS Servicetool.........................................................................................34
Buffer Amplifier ...........................................................................................60
CCables....................................................................................................17, 31
Calibration ...................................................................................................91
Caution Lock Frequency ..........................................................................88, 89
Chemical Shifts.....................................................................................35, 104
compound.....................................................................................................35
Config..........................................................................................................87
ContDACError..............................................................................................93
Controller Board ...........................................................................................15
controller DAC .............................................................................................91

2 Spectrospin AG Daedalus Lock Manual
controller out................................................................................................89
Controller Pulses...........................................................................................43
Current Source..............................................................................................90
current source ...............................................................................................91
DDC Decoupling .............................................................................................60
DDS.............................................................................................................89
DDS (Direct Digital Synthesizer) Diagnostic ...................................................90
DDS Frequency.............................................................................................40
DDS frequency .............................................................................................89
DDSFreqBusError.........................................................................................93
DDSPhaseBusError .......................................................................................93
default 2H frequency .....................................................................................89
default DDS frequency ..................................................................................89
default values ...............................................................................................87
Delete Error..................................................................................................87
Deuterium ....................................................................................................11
Deuterium Frequency ......................................................................40, 41, 104
Deuterium local oscillating signal...................................................................38
Deuterium transmitter signal ..........................................................................38
development and debug tools..........................................................................91
Diagnostic....................................................................................................90
difference experiments...................................................................................24
Digital Analog Converter (DAC) ....................................................................38
Digital Lock Settings.....................................................................................15
Digital Synthesizer........................................................................................15
Direct Digital Synthesizer (DDS)..............................................................38, 40
Dispersion....................................................................................................56
Display ........................................................................................................22
Display Cable ...............................................................................................17
Display Data.................................................................................................68
Display jumpers............................................................................................73
Display Mode .........................................................................................21, 28
Display mode................................................................................................89
Display Scaler Board.....................................................................................17
dividers........................................................................................................52
DownLoad....................................................................................................87
DP_RAMError..............................................................................................93
Drift.............................................................................................................11
DSP.......................................................................................................67, 68
DSP Host Interface........................................................................................67
DSP RAM Checksum ....................................................................................94
DSP SwAmplError ........................................................................................94
DSP SwRateError..........................................................................................94
DSPDisplayError ..........................................................................................93
DSPDownLoadError......................................................................................94
DSPFieldError ..............................................................................................94
DSPLockDCError .........................................................................................94
DSPLoopGainError .......................................................................................94
DSPLoopTimeError.......................................................................................94
DSPNoSerialData..........................................................................................94
EECL...........................................................................................49, 57, 61, 74
EraseFail......................................................................................................94
Erasing Flash EPROM...................................................................................87
Error 0 .........................................................................................................96

List of Index
Daedalus Lock Manual Spectrospin AG 3
Error 10........................................................................................................98
Error 11........................................................................................................93
Error 12........................................................................................................93
Error 13........................................................................................................98
Error 130......................................................................................................95
Error 131......................................................................................................98
Error 132......................................................................................................93
Error 133......................................................................................................93
Error 134......................................................................................................95
Error 135......................................................................................................94
Error 136......................................................................................................94
Error 137......................................................................................................94
Error 138......................................................................................................94
Error 139......................................................................................................94
Error 140......................................................................................................94
Error 141......................................................................................................94
Error 142......................................................................................................93
Error 143......................................................................................................95
Error 144......................................................................................................96
Error 145......................................................................................................93
Error 146......................................................................................................94
Error 148......................................................................................................94
Error 149......................................................................................................95
Error 150......................................................................................................96
Error 151......................................................................................................97
Error 152......................................................................................................97
Error 153......................................................................................................99
Error 155......................................................................................................97
Error 156......................................................................................................96
Error 157......................................................................................................95
Error 158......................................................................................................99
Error 160......................................................................................................99
Error 161......................................................................................................99
Error 162......................................................................................................96
Error 163......................................................................................................98
Error 164......................................................................................................98
Error 165......................................................................................................93
Error 22........................................................................................................98
Error 3 .........................................................................................................99
Error 30........................................................................................................95
Error 4 .........................................................................................................95
Error 51........................................................................................................95
Error 52........................................................................................................95
Error 53........................................................................................................96
Error 8 .........................................................................................................99
Error Code....................................................................................................94
Error Code = 12 ..........................................................................................100
Error Code = 31 ............................................................................................99
Error Code = 32 ..........................................................................................100
Error Code = 33 ..........................................................................................100
Error Code = 34 ..........................................................................................100
Error Code = 36 ............................................................................................98
Error Code = 39 ............................................................................................97
Error Code 38 .............................................................................................100
Error Messages .............................................................................................93
Error_Startchar .............................................................................................95
ErrorOnLCB.................................................................................................95

4 Spectrospin AG Daedalus Lock Manual
FFFA Amplifier Diagnostic..............................................................................90
FFA Mode........................................................................................38, 42, 43
FFA Spectrum...............................................................................................89
FFAError......................................................................................................95
FFA-Spectrum ..............................................................................................21
FIELD..........................................................................................................21
Field ............................................................................................................22
Fluorine .......................................................................................................51
Fluorine (as lock substance) ...........................................................................11
Fluorine Frequency......................................................................................105
Fluorine-Lock-Option....................................................................................31
GGainBusError................................................................................................95
Galvanic Isolation .........................................................................................11
gradients ......................................................................................................28
Graphic Terminal ..........................................................................................68
GT01 ...............................................................................................17, 69, 74
GX01...........................................................................................................17
HH0 Power Source ..........................................................................................15
H0_CURRENT .............................................................................................91
Hardware) Version ........................................................................................74
HF Amplifier................................................................................................55
HF Bandpass Filter........................................................................................55
HF Parameters ..............................................................................................70
HF Power Supply Failure...............................................................................95
Highpass Filter..............................................................................................60
hold off........................................................................................................29
hold on.........................................................................................................29
Hold Operation .............................................................................................28
Homospoil....................................................................................................91
Homospoil interface ......................................................................................88
HPPR...........................................................................................................17
HPPR 19F-Selective module ..........................................................................31
HWTesterIsOff .............................................................................................95
HWTesterIsOn..............................................................................................95
Iii .................................................................................................................35
imaginary part...............................................................................................89
Init ..............................................................................................................87
Interface Function .........................................................................................88
JJumper.........................................................................................................68
Jumper Setting........................................................................................70, 73
KKeyboard......................................................................................................27
LL_SUBST.....................................................................................................90
LF-Amplifier ................................................................................................56
LO Cable......................................................................................................17
Load Lock Settings........................................................................................91
Lock Channel................................................................................................11
Lock Controller LCB.....................................................................................17
Lock DC ......................................................................................................21
Lock Drift ....................................................................................................21

List of Index
Daedalus Lock Manual Spectrospin AG 5
Lock Gain ....................................................................................................15
Lock in Spike ...............................................................................................28
Lock Parameters............................................................................................21
Lock Phase...................................................................................................21
Lock Power ..................................................................................................21
Lock Receiver...............................................................................................17
Lock RF Gain ...............................................................................................21
Lock Setting .................................................................................................27
Lock Settings for 19F ....................................................................................36
Lock Shift ........................................................................................11, 21, 89
Lock Substance.............................................................................................35
Lock Transmitter...........................................................................................17
Lock-Hold....................................................................................................28
Lock-In........................................................................................................22
Lockin PStep ................................................................................................22
Locklost.......................................................................................................91
Lock-Shift....................................................................................................35
LOOP FILTER..............................................................................................21
Loop Gain ....................................................................................................21
Loop Time....................................................................................................21
Lowpass Filter ..............................................................................................60
MMagnet Type.................................................................................................88
Manual Lock In.............................................................................................27
Manual Lock-In ............................................................................................22
Menu Tree....................................................................................................27
Mixer...........................................................................................................60
Mode Register ..............................................................................................90
ModeBusError ..............................................................................................95
MX..............................................................................................................89
MY..............................................................................................................89
NNMR Control Word.......................................................................................28
No Communication with DSP.........................................................................95
No FFA Amplifier Signal...............................................................................96
No FFASignal Found.....................................................................................96
No H0 Coilcurrent.........................................................................................96
No Option ....................................................................................................96
No Quadmixer Signal ....................................................................................97
No RFOut Signal...........................................................................................97
No T2H DDSSignal.......................................................................................97
No Z0_Compensation on LCB........................................................................98
noise modulation...........................................................................................24
normal lock mode..........................................................................................90
NotSameBootRoutine ....................................................................................97
OOperation .....................................................................................................21
Option (19F).....................................................................................59, 81, 83
Options ........................................................................................................91
PP_BNK0..P_BNK3........................................................................................90
PFP Mode.........................................................................................38, 42, 43
phase detector...............................................................................................52
phase locked oscillator...................................................................................52
PI Regulator .................................................................................................21
PLL .......................................................................................................52, 91

6 Spectrospin AG Daedalus Lock Manual
PLL ERROR.................................................................................................98
power...........................................................................................................87
Power Bus Error............................................................................................98
Power Supply Diagnostic ...............................................................................90
PowerFail.....................................................................................................98
ppm .............................................................................................................35
Print Number..............................................................................49, 57, 61, 74
ProgrammerFail ............................................................................................98
Pulsbanks.....................................................................................................90
Pulse Bank ...................................................................................................43
Pulse Program...............................................................................................29
Pulse Section ..........................................................................................15, 43
Pulses ..........................................................................................................90
QQuadMixer Diagnostic...................................................................................90
Quadrature Mixer....................................................................................38, 41
RRAM Error ...................................................................................................98
RCP Interface ...............................................................................................67
Read Lock Level...........................................................................................89
real part........................................................................................................89
real part expanded.........................................................................................89
real part low pass filtered...............................................................................89
Rec. Blanking On/Off....................................................................................88
Receiver.....................................................................................15, 31, 59, 81
Receiver AGC Voltage Diagnostic..................................................................90
Receiver Blanking.........................................................................................44
Receiver Cable..............................................................................................17
receiver gain overflow ...................................................................................24
Reference Signal...........................................................................................38
Regulator Gain..............................................................................................21
Regulator Output.....................................................................................21, 22
regulator output.............................................................................................28
Regulator Time Constant ...............................................................................21
reset.............................................................................................................87
Reset and Power up Logic..............................................................................66
RP1 .............................................................................................................90
RS Baudrate .................................................................................................69
RS232....................................................................................................68, 69
RS232 Piggy Board .......................................................................................75
RS-Baudrate .................................................................................................22
RX AGC Voltage Failure ...............................................................................99
RX_BLNK ON .............................................................................................90
RxOpt TxOpt...............................................................................................99
RxTyp TxTyp ..............................................................................................99
Ssaturation ...............................................................................................23, 24
Save Config..................................................................................................89
Save Lock Settings........................................................................................91
SCI Interface ................................................................................................69
SCI jumpers..................................................................................................74
service tool...................................................................................................87
Shift.............................................................................................................22
SHIFT/FIELD...............................................................................................22
Shift/Field ....................................................................................................88
sidebands .....................................................................................................22

List of Index
Daedalus Lock Manual Spectrospin AG 7
Signal Processor............................................................................................15
software .......................................................................................................87
softwarehandshake ........................................................................................69
SSI Interface.................................................................................................69
standard bore ................................................................................................88
standard field................................................................................................89
STD BY .......................................................................................................87
Substance.....................................................................................................87
super wide bore.............................................................................................88
Sweep ..........................................................................................................21
Sweep Amplitude..........................................................................................21
Sweep Rate...................................................................................................21
sweep wiggles...............................................................................................22
Syntax Error .................................................................................................99
TToo much Noise on ADC ...............................................................................99
TP ...............................................................................................................90
Trans Blanking On/Off ..................................................................................88
Transmitter.................................................................................15, 31, 59, 82
Transmitter Blanking.....................................................................................44
Transmitter Cable..........................................................................................17
Transmitter HFSection Diagnostic ..................................................................90
Transmitter Power Range...............................................................................42
Transmitter Subsections.................................................................................38
TX_BLNK Off..............................................................................................90
UUpgrade to ECL01.........................................................................................75
UXNMR.......................................................................................................35
VVariable Lock Parameters ..............................................................................21
Version ........................................................................................................87
VME Interface ..................................................................................15, 64, 66
Wwide bore .....................................................................................................88
wiggles ..................................................................................................22, 23
Wrong AppSW............................................................................................100
Wrong Datacount ..........................................................................................99
Wrongaddress.............................................................................................100
WrongCheckSum ........................................................................................100
WrongRecord Type .....................................................................................100
WrongTransmissionCheck............................................................................100
XX32 Commands.............................................................................................15
XOFF...........................................................................................................69
XON............................................................................................................69
ZZ0_Comp .....................................................................................................88
Z0_Compensation .........................................................................................98
Z0-Comp......................................................................................................22

8 Spectrospin AG Daedalus Lock Manual

Chapter
Daedalus Lock Manual Spectrospin AG 9
Introduction
About Daedalus
Those of you with a knowledge of ancient Greek history will no doubt recognise the
name we have used for our new digital lock. Daedalus and his son Icarus, in an ef-
fort to flee from one island to another, built two sets of wings in order to fly to free-
dom. The wings were constructed of feathers glued to a wicker frame with wax. The
wings functioned beautifully and they set over the ocean. In his joy Icarus flew
higher and higher and, heeding Daedalus no longer, plunged to his death after flying
too close to the Sun. His wax had melted and the wings disintegrated. His wise fa-
ther Daedalus flew on for a great distance - safely reaching his goal.
Just as the original Daedalus came to be a legend so too is our Digital Daedalus
Lock System destined to receive great acclaim. Inspired by the same soaring philos-
ophy and thorough preparation our Daedalus Lock will perform for you to achieve
the ever more exacting demands for NMR in the 90’s!
Your Manual Contains
Your manual features three major areas to help you quickly locate your subject of
interest.
The first two chapters -‘General Description’ and ‘Operation’ - provide an overview
of the entire system with specifics for operation.
The following three chapters ‘Lock Transmitter’, ‘Lock Receiver’, and ‘Lock Con-
troller’ cover in detail the print boards from which the Digital Lock is constructed.
Function descriptions, general information, schematics, diagrams and testing infor-
mation for the boards are all located in this mid section.
The final chapters give you an overview of the System Software, Technical Data, Er-
ror Messages and Correcting Technique. The appendix includes various frequency
and range information and a list of abbreviations we hope you will find useful.
For your convenience we have also included at the rear a ‘List of Figures’ and a
‘List of Tables’.
Sincerely Yours
‘The Daedalus Team’
SPECTROSPIN AG

10 Spectrospin AG Daedalus Lock Manual

Chapter
Daedalus Lock Manual Spectrospin AG 11
General Description 2
Introduction 2.1
To compenstate or eliminate the effects of drift and disturbances to the magnet
sysem, a special regulating system has been employed. Every variation in the mag-
netic field brings about a change in the magnetic resonance signal.
To achieve the necessary high stability we employ a special measurement/regulation
system known as the LOCK CHANNEL. This requires an independent, complete
transmission/receiving channel for Deuterium that is used to stabilize the magnetic
field with a regulating system.
Deuterium is added to samples that we wish to measure. In most cases Deuterium
has no influence on the outcome of experiments conducted with the NMR system.
In special cases where Deuterium is the substance of interest an alternative lock
channel can be used. This alternative channel (option) uses Fluorine as the lock sub-
stance.
The Daedalus Lock is applied to ARX, AMX, DRX, DMX, DPX-Spectrometers.
Features 2.2
-ULTRA LOW NOISE DESIGN
-SIGNIFICANT IMPROVEMENTS IN SHORT AND LONG TIME STABILITY
-LOWEST T1 NOISE IN 2D - SPECTRAS
-INDEPENDEND IN TEMPERATURE CHANGES
-HIGH SUPPRESSION OF MAGNETIC FIELD DISTURBANCES
-VARIABLE REGULATION PARAMETERS
-FAST SEARCH OF LOCK SIGNAL AND FAST LOCK IN (Bloch’ Regulator)
-ADJUSTABLE LOCK FREQUENCY (+-1MHz)
-VARIABLE LOCK SHIFT (+-200ppm)
-NARROW LOCK TRANSMITTER SPECTRUM (Blackman Window)
-COMPUTER CONTROL OF ALL LOCK PARAMETERS
-IMPLEMENTED START UP AND RUN TIME DIAGNOSTICS
-FEATURES FOR GRADIENT SPECTROSCOPY
-ALTERNATING PHASE RECEIVING
-DIGITAL SIGNAL PROCESSING IN RECEIVER AND CONTROLLER
-MOUNTED in 19’ HF MOULDED CASES
-GALVANIC ISOLATION between Analog- und Digital elements
-ON FIELD change over to Fluorine (Option)

General Description
12 Spectrospin AG Daedalus Lock Manual
Daedalus Lock Catchwords (for Bash) 2.3
Lock Controller, Lock Receiver, Fluorine Lock, 19F Chemical Shifts, 2H Chemical
Shifts, 19F RX Option, 19F TX Option, Auto Gain, Auto Lock, Auto Phase, Auto
Power, BSMS Servicetool, Current Source, Deuterium Frequency, Drift, FFA, H0,
Lock Gain, Lock Phase, Lock Power, Lock Shift, Lock Transmitter, Lock-Hold,
PLL, RS232 Piggy Board, Sweep, Wiggles, Z0_Compensation

Daedalus Lock Catchwords (for Bash)
Daedalus Lock Manual Spectrospin AG 13
Figure 1: Lock Function Diagram

General Description
14 Spectrospin AG Daedalus Lock Manual
Mixer BP
H0-Coil
Probe BP
Mixer

Rectifier
Transmitter
ux
uy
DHreg
wm/2
wm/2
LO(0û)
LO(90)
Rectifier
Digital Signal Processing
Digital Regulator