Anfatec eLockIn 203, Manual

Page: 2 / 58

T
ABLE OF
C
ONTENTS
1 Introduction..................................................................................................................5
1.1 General Functions..................................................................................................5
1.2 Specifications eLockIn203.......................................................................................7
1.2.1 Lock-In Amplifier...........................................................................................................7
1.2.2 Oscilloscope:................................................................................................................9
1.2.3 AUX In:........................................................................................................................9
1.2.4 AUX Out:......................................................................................................................9
2 Lock-In Basics..............................................................................................................10
2.1 Lock-In Amplification............................................................................................10
2.2 Mathematical Description......................................................................................10
2.3 Characteristical Curves of a Lock-In Amplifier.........................................................12
2.4 Noise Measurements.............................................................................................13
2.5 Example: Electrical Force Microscope.....................................................................14
3 Users manual...............................................................................................................16
3.1 Technical introduction...........................................................................................16
3.1.1 Front Panel.................................................................................................................16
3.1.2 Screen Organization....................................................................................................17
3.1.3 The Menu Tree...........................................................................................................18
3.1.4 Rear Panel..................................................................................................................20
3.2 The LockIn Menu [ LockIn ]..................................................................................20
3.2.1 Input Settings [ LockIn / Input ]..................................................................................20
3.2.2 Reference Output [ LockIn / Ref ]................................................................................23
3.2.3 Display Settings [ LockIn / Display ].............................................................................24
3.2.4 AUX Out [ LockIn / Out ].............................................................................................25
3.3 The Spectra Menu [Spectra]..................................................................................26
3.3.1 Run/Stop [ Spectra / Run ] or [ Spectra / Stop ]...........................................................26
3.3.2 Display [ Spectra / Display ].........................................................................................26
3.3.3 Acquire [ Spectra / Acquire ]........................................................................................27
3.3.4 Save [ Spectra / Save ]................................................................................................28
3.4 Oscilloscope [ Scope ]...........................................................................................28
3.4.1 Run/Stop [ Scope / Run ] or [ Scope / Stop ]................................................................28
3.4.2 Display [ Scope / Display ]...........................................................................................29
3.4.3 Acquire [ Scope / Acquire]...........................................................................................29
3.4.4 Save [ Scope / Save ]..................................................................................................29
3.5 Measure [ Measure ].............................................................................................29
3.6 Setup [ Setup ]....................................................................................................30
3.7 Handling of parameter settings.............................................................................31
3.8 FTP Data Access...................................................................................................31
3.9 HTTP Web Access.................................................................................................31
3.10 Known Problems.................................................................................................32
4 Remote Control............................................................................................................33
4.1 General Accessing via CGI- Interface.....................................................................33
4.1.1 Technical Requirements...............................................................................................33
4.1.2 Authentication............................................................................................................33
4.1.3 Sending Key Codes to the eLockIn...............................................................................34
4.1.4 Setting Any Values......................................................................................................36
4.1.5 Examples For Keycode Operation.................................................................................40
4.1.6 Retrieving Screenshots................................................................................................41
4.1.7 Retrieving Channel Values...........................................................................................41
4.1.8 Get Internal Settings and Status Information................................................................41
4.1.9 Example Program: LockInRemote.................................................................................42
4.2 Use CGI-Functions via Web Browser......................................................................44
4.3 Exported functions of the eLockin.dll......................................................................44
4.4 Remote by Matlab................................................................................................45
4.5 Remote control for the eLockIn in LabView............................................................46
2 (58)