Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier ModuleFeatures





BNC Connectors for Input and Output Signals
Rugged Aluminium Housing
Dual Phase Detection with X, Y and Magnitude Output
Working Frequency 50 Hz ... 120 kHz, Digital Phase Shifter 0 ... 360°
Parameter Control by local Switches and opto-isolated digital Inputs
Optional Reference Oscillator Module available

Applications

Spectroscopy
Luminescence, Fluorescence, Phosphorescence Measurements
Light Scattering Measurements
Opto-electronical Quality Control

Block Diagram

Progr. Gain
AC-Amplifier

Lowpass-FilterHighpass-Filter

VOLTAGEINPUTMONITOROUTPUT

VOLTAGEOUTPUT

fgo = 100Hz...
1MHz / 6dB

fgu = 2Hz...
10kHz / 6dB

Lowpass-Filter

Progr. Gain
DC-Amplifier

Transimpedance
Amplifier

CURRENT
INPUT

Gain=-100kV/A

PSD

X-OFFSETINPUT
X-OUTPUTR * cos(ϕ)

t=0.3ms...1s
6/12 dB/Oct.
Reference
Comparator

DigitalPhase-Shifter

Vector Summing
Amplifier
0°∆ϕ

REFERENCE
INPUT

Y

RX

∆ϕ =0 ... 360°

PSD

Lowpass-Filter

Optocoupler
Isolate Unit

Progr. Gain
DC-Amplifier
Y-OUTPUTR * sin(ϕ)

CONTROL
INPUTS
t=0.3ms...1s6/12 dB/Oct.
ManualSwitches

R-OUTPUT
Magnitude

90°

Parameter
Control Unit

Overload
Detector
Unlocked
Detector

Y-OFFSETINPUTSTATUSOUTPUT
BS01-1034-12

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LIA-MVD-200-H/DS/R2/20AUG03/ Page 1 of 10

Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module
Test Conditions

Vs = ± 15 V, Ta = 25°C

Voltage Input

Voltage Input Characteristic
Voltage Input Range
Voltage Input Coupling
Voltage Input Impedance
Voltage Input Noise
Voltage Input CMRR
Voltage Input Gain Drift

True Differential Instrumentation-Amplifier
3 µV ... 1V in 1-3-10 steps (for Full Scale Output)
AC1 MΩ // 4 pF
12 nV/√Hz
110 dB @ 1 kHz, 100 dB @ 10 kHz
100 ppm/K

Current Input

Current Input Characteristic
Current Input Range
Current Input Noise
Current Input Source- Capacit.
Current Input Gain Error vs.
Source CapacitanceTransimpedance-Amplifier, -100 kV/A (inverting)
30 pA ... 10 µA in 1-3-10 steps (for Full Scale Output)
0.4 pA/√Hz
10 pF – 500 pF (recommended)

Specifications

Csf < 20 kHz f = 50 kHz f = 100 kHz
10 pF<1%1%4%100 pF<1%1%3%500 pF
<1%4%3%Signal Filter(without optional
Bandpass-Module)

Signal Filter Lowpass (-3 dB BW) 1 MHz , 100 kHz, 10 kHz, 1 kHz, 100 Hz; 6 dB/Oct.
Selectable per jumper
Signal Filter Highpass (-3 dB BW) 2 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz; 6 dB/Oct.
selectable per jumper
Signal Filter Cutoff accuracy± 20 %
Max. Dynamic Reserve
80 dB

Signal Monitor Output

Signal Monitor Output Gain
1 ... 3333 (depends on Gain-Setting)
Signal Monitor Output Voltage± 8 V max.
Signal Monitor Output Impedance 100 Ω
Signal Monitor Output Current± 10 mA max.
Note

When using Current Input with low Input Ranges, theMonitor Output may be disabled by opening the soldering
jumper at the Board (near JP1) to prevent from recoupling.

Demodulator

Demodulator Dynamic Reserve

15 dB @ Ultra Stable Setting
35 dB @ Low Drift Setting
55 dB @ High Dynamic Setting

Reference Input

Reference Input Voltage Range± 100 mV ... ± 5 V @ bip. Mode (0 V Comparator Threshold)- 5 V / +10 V @ TTL Mode (+2 V Comparator Threshold)1 MΩ
max. 2 s @ Fast Setting
max. 4 s @ Slow Setting

Reference Input ImpedanceReference Acquisition Time

Phase Shifter

Phase Shifter Type
Phase Shifter Range
Phase Shifter Resolution
Phase Shifter Drift
Phase Shifter Accuracy
Phase Shifter Orthogonality

Digital, Working Frequency 50 Hz ... 120 kHz
0 ... + 360 °
1.4 ° @ f < 60 kHz, 2.8 ° @ f > 60 kHz< 100 ppm/K< 0.3 °
< 0.1 °

Time Constants

Time Constant Range
300 µs ... 1 s in 1-3-10 steps
Time Const. Filter Characteristic 6 dB/Oct. or 12 dB/Oct. Switchable

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LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Specifications (continued)
OutputOutput Channels
Output Voltage Range
Output Current
Output Impedance
Output DC-Stability

Output Basic Accuracy
Output Voltage Offset Range
Output Voltage Offset ControlOutput Load Impedance

X = In Phase, Y = Quadrature, R = Magnitude± 10 V (@ 2 kΩ Load)± 5 mA max.
50 Ω
5 ppm/K @ Ultra Stable Setting
50 ppm/K @ Low Drift Setting
500 ppm/K @ High Dynamic Setting
2 % (X and Y-Output) @ sinusoidall input signal4 % (R-Output) @ sinusoidal input signal± 100 % Full Scale by ± 10 V Control Voltage> 2 kΩ

Status Indicator LED

Functions

Amplifier Overload Status
Reference PLL Unlocked Status

Digital Control

Control Input Voltage
Control Input Current
Digital Status Output Voltage
Digital Status Output Current

Low: - 0.8 V ... + 0.8 V, High: + 1.8 V ... + 12 V
0 mA @ 0V, 1.5 mA @ + 5 V, 4.5 mA @ + 12V typ.
Active: + 4.5 V typ., Non Active: 0 V typ.
10 mA max.

Power Supply

Supply Voltage
Supply Current± 15 Vdc ... ± 18 Vdc- 60 mA, + 120 mA

Case

MaterialDimension
WeightAluminium anodized
64,4 x 105,0 x 223,0 mm (without BNC-connectors)
1000 gr. (2.2 lbs)

Temperature Range

Storage Temperature
Operating Temperature- 40 ... + 100 °C
0 ... + 60 °C

Absolute Maximum Ratings

Signal Input AC Voltage
Reference Input Voltage
Control Input Voltage
Power Supply Voltage

50 Vpp± 15 V- 5 V, + 30 V
± 22 V

Switch Settings

4 Dip Switch - Presettings

Switch OFFONS1Low Drift & High Dynamic Ultra Stable & Low Drift
S21-f Mode
2-f Mode
S3Fast PLL-Locking
Slow PLL-Locking
S4
Reference-InputReference-InputThreshold = 0 V
Threshold = +2 V

Sensitivity Setting,
Output DC-Gain Modes

3 Output DC-Gain Modes are selectable:
ModeDC-Gain
Dyn. Reserve DC-StabilityUltra Stable
10Low
High
Low Drift
100
MediumMedium
High Dynamic 1000
HighLow
If only low dynamic reserve is required, select the higher
DC-Stability settings. Use Dip switch S1 to preselect either
the two upper or the two lower DC-Gain modes, then selectbest mode by Sensitivity switch settings 0–7 or 8–F.

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LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Switch Settings (continued)

S1 = ON: Sensitivity Settingfor Full Scale ( = 10 V Output)

Ultra Stable Mode
 Low Drift ModeSetting Voltage Current  Setting Voltage Current01V10 µA  8100 mV
1 µA
1300 mV
3 µA  930 mV 300 nA
2100 mV
1 µA  A
10 mV 100 nA
330 mV 300 nA  B
3 mV30 nA
410 mV 100 nA  C
1 mV10 nA
53 mV30 nA  D300 µV
3 nA
61 mV10 nA  E100 µV
1 nA
7300 µV
3 nA  F30 µV 300 pA

S1 = OFF: Sensitivity Settingfor Full Scale ( = 10 V Output)

Low Drift Mode High Dynamic ModeSetting Voltage Current  Setting Voltage Current0100 mV
1 µA  810 mV 100 nA
130 mV 300 nA  93 mV30 nA
210 mV 100 nA  A
1 mV10 nA
33 mV30 nA  B
300 µV
3 nA
41 mV10 nA  C
100 µV
1 nA
5300 µV
3 nA  D30 µV 300 pA
6100 µV
1 nA  E
10 µV 100 pA
730 µV 300 pA  F3 µV
30 pA

Time Constant Setting

6 dB/Oct. 12 dB/Oct. Time Constant08300 µs
191 ms
2A
3 ms
3B
10 ms
4C
30 ms
5D100 ms
6E300 ms
7F
1s

Phase Shift Setting

Phase shift is adjusted by 2 phase switches with8 Bit resolution. Values 0 ... 255 ( Hex 00 ... FF )correspond to phase shift setting 0 ... +360 °.
One step with switch marked “Coarse” changes phase shiftby 22.5 °. The “Fine”-switch changes phase shiftby 1.4 ° - steps:CoarseFine+11,3°+8,4° 7 8 9 +14,1°+225°A6A
55BB+90° 4
C +270° +5,6° 4C +16°DD332E2E
1 0 F +19,7°+2,8°+45° 1 0 F +315°
0°0°+135°

6+180°
7 8 9If Frequency Range f > 70 kHz or 2-f Mode is selected,
the resolution of digital phase control changes to 2.8 °and the phase shift range doubles to 0 ... + 720 °.

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Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Internal Jumper Settings(jumpers are accessible
when top of case isremoved)

Input Signal Filter
Setting

Set Cut-Off Frequency of Input Lowpass Filter
with JP1 + JP2 (always same position) andHighpass Filter with JP3:Highpass Lowpass
JP3-3 dB Cut-Off  JP1, JP2 -3 dB Cut-Off
3–4
2 Hz  1 – 2
100 Hz
1–3
10 Hz  3 – 4
1 kHz
2–4
100 Hz  5 – 6
10 kHz
3–5
1 kHz  7 – 8
100 kHz
4–6
10 kHz  none
1 MHz ** (At Sensitivity Settings 6,7 & E,F max. 200 kHz )Frequency Range
Selection

JP4Frequency Range1–2f < 60 kHz
3–4 & 5–6f > 60 kHz
7, 8
test pins, do not use(if 2-f mode is used, position is always 1-2)

Internal Jumper Position
Diagram(look at top of board whencase is opened)

Control Interface
Extension Connector
7 5 318 6 421JP2

7 5 3 1 JP18642
97 5 31Monitor Output

JP310 8 6 4 2 Filter Extension
Connector

X Freq. Comp.

Y Freq. Comp.

1
Reference Oscillator
Extension Connector

X Offset Adjust
X Gain Adjust

Trimmer for Service
purposes only !

Amplitude Adjust
Frequency Adjust

13JP6 75

2468

Optional Reference
Oscillator Module2468JP41 3 57

Y Offset Adjust
Y Gain Adjust

Lock-In-Amplifier Board

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Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Internal Connector(of build-in Lock-In Board)

Connector TypeEuro-Card DIN 41612 Connector, 64 pin male, (a+c)

Input

Pin C2:
Pin C3:
Pin C4:
Pin C5:
Pin C7:
Pin C6:
Pin A2- A6:

Voltage Input, Non Inverting, DC-Coupled
Voltage Input, Non Inverting, AC-Coupled
Voltage Input, Inverting, AC-Coupled
Voltage Input, Inverting, DC-Coupled
Current Input
Current Amplifier Voltage Output
Input GND

Monitor Output

Pin C9:Pin A9:

Monitor Output
Monitor GNDOutput

Pin A12:
Pin C14:
Pin A14:
Pin C15:

R-Signal Output
X-Signal Output
Y-Signal Output
Output GND

Offset Input

Pin A10:
Pin A11:
Pin A13:

X-Offset Input
Y-Offset Input
Offset GND

Status Output

Pin C10:
Pin C11:
Pin C17:

Unlocked Status Output
Overload Status Output
Status Output GND (=Power Supply GND)

Power Supply

Pin A16+C16:
Pin A18+C18:
Pin A17+C17:

Power Supply – 15V
Power Supply + 15V
Power Supply GND

Remote Control Inputs(Opto-Isolated)

Pin C19:
Pin A19:
Pin C20:
Pin A20:
Pin A22:
Pin C21:
Pin A21:
Pin C22:
Pin A28:
Pin C28:
Pin A27:
Pin C27:
Pin A26:
Pin C26:
Pin A25:
Pin C25:
Pin C24:
Pin A23+A24:

Time Constant (TC0)Time Constant (TC1)Time Constant (TC2)Time Constant Slope (TCSL)
Sensitivity (SEN0)
Sensitivity (SEN1)
Sensitivity (SEN2)
Dynamic Mode (DYN0)
Phase Shift (PH0)
Phase Shift (PH1)
Phase Shift (PH2)
Phase Shift (PH3)
Phase Shift (PH4)
Phase Shift (PH5)
Phase Shift (PH6)
Phase Shift (PH7)
Disable Local Switch Control
Remote Control GND(Common Optocoupler Cathode)

Reference Input

Pin A32:
Pin A31:

Reference Input
Reference Input Ground

Reference Output(Connected only if optional
Oscillator Module is installed)

Pin A30:
Pin A17:
Pin A29:

Reference Output
Refer. Output GND (=Power Supply GND)
Reference Synchronization Input

Standard Control Interface(Connected only if optional
Control Interface Module(future product) is installed)

Pin C29:
Pin C30:
Pin C31:
Pin C32:

Interface 0
Interface 1Interface 2Interface 3

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Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

External Connectors(at backside, StandardConfiguration)

Signal Input

Factory set to BNC, isolated (single ended)

X-OutputBNC

Y-Output

BNC

R-Output

BNC

Reference Input

BNC

Power Supply

LEMO Series 1S, 3-pin fixed Socket
Pin 1: + 15V
Pin 2: - 15V
Pin 3: GND
PIN 2 PIN 1-15V +15V

PIN 3
GND

Connector Wiring Options

Control Port

Sub-D 25-pin, female, Qual. Class 2
Pin 1:+12V (Stabilized Power Supply Output)
Pin 2:-12V (Stabilized Power Supply Output)
Pin 3:
AGND (Analog Ground)Pin 4:+5V (Stabilized Power Supply Output)
Pin 5:
X-OutputPin 6:
Overload Status Output
Pin 7:
Unlocked Status Output
Pin 8:Disable Local Switch Control Input
Pin 9:
DGND (Ground f. Digital Control Pin 8 - 25)
Pin 10:
Dynamic Mode (DYN0)
Pin 11:
Sensitivity (SEN0)
Pin 12:
Sensitivity (SEN1)
Pin 13:
Sensitivity (SEN2)
Pin 14:
Time Constant Slope (TCSL)
Pin 15:Time Constant (TC0)
Pin 16:Time Constant (TC1)
Pin 17:
Time Constant (TC2)
Pin 18:Phase Shift (PH0)
Pin 19:Phase Shift (PH1)
Pin 20:Phase Shift (PH2)
Pin 21:
Phase Shift (PH3)
Pin 22:Phase Shift (PH4)
Pin 23:Phase Shift (PH5)
Pin 24:Phase Shift (PH6)
Pin 25:Phase Shift (PH7)

GeneralThe BNC-connector configuration can be easily changed by
setting electrical jumpers at the internal I/O-adapter card.
Disconnect the power supply and open the case byloosening the two upper screws at the case front and rearside. Please pay attention to the ground connection at thebackplane. Now open the case by lifting the top.
The jumper options and functions are described in thefollowing table.

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Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Connector Wiring Options,Jumpers on internal
Adapter Board

Input Connectors (JP1)

Output Connectors (JP2)

Input wiring
Jumper installed
IN A = Voltage Input"+V-IN → IN A"(Single Ended, AC)"GND → IN A/SHLD""-V-IN → IN A/SHLD"IN A = Voltage Input(Differential, AC)"+V-IN → IN A""-V-IN → IN A/SHLD"IN A / IN B = Voltage Input(2 BNC Differential, AC)(OUT A cannot be used)"+V-IN → IN A""GND → IN A/SHLD""-V-IN → IN B"

IN A = Current Input(Single Ended)"C-IN → IN A""GND → IN A/SHLD""-V-IN → C-OUT"

Output wiring
Jumper installedOUT A = X-Output"X → OUT A"(JP1) "USE OUT A/NO IN B"
OUT B = X-Output"X → OUT B"

OUT A = Y-Output"Y → OUT A"(JP1) "USE OUT A/NO IN B"

OUT B = Y-Output"Y → OUT B"

OUT C = Y-Output"Y → OUT C"

OUT A = R-Output"R → OUT A"(JP1) "USE OUT A/NO IN B"

OUT B = R-Output"R → OUT B"

OUT C = R-Output"R → OUT C"

OUT B = Monitor Output"MON → OUT B"

OUT C = Monitor Output"MON → OUT C"

OUT B = Unlocked Output"UNL → OUT B"

OUT C = Unlocked Output"UNL → OUT C"

OUT B = Overload Output"OVL → OUT B"

OUT C = Overload Output"OVL → OUT C"OUT C = Reference Output"REF-OUT → OUT C"

Reference Connector (JP3)

Reference wiring
Jumper installed
REF = Reference Input"REF-IN → REF" (2 Jumper)(Reference Output only if
optional Oscillator Moduleis installed)

REF = Reference Output(Reference Output
connected to Ref. Input)"REF-OUT → REF-IN" (2 Jp.)
"REF-IN → REF" (2 Jumper)

REF = Refer. Sync. Input(use OUT C as
Reference Output)"REF-SYNC → REF" (2 Jp.)

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LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Remote Control Operation

GeneralRemote Control Input Bits are opto-isolated and connectedby logical OR to local switch setting. The 4 hexadecimal
switches are 4 Bit-coded as shown in the following table:
MSB
LSB
Switch Code Bit 3 Bit 2 Bit 1 Bit 0
0Low
Low
Low
Low
1Low
Low
Low
High2Low
Low
High Low
3Low
Low
High High
4Low
High Low
Low
5Low
High Low
High6Low
High High Low
7Low
High High High8High Low
Low
Low
9High Low
Low
HighAHigh Low
High Low
BHigh Low
High HighCHigh High Low
Low
DHigh High Low
HighEHigh High High Low
F
High High High HighFor remote control a switch setting, set the local switch
to “0” and select the wanted setting via the 4-Bit-code
at the corresponding digital inputs.

Sensitivity Switch Corresponding Inputs

BitCorresponding Control Port Input
Bit 0
SEN0 (Pin A22)
Bit 1
SEN1 (Pin C21)
Bit 2
SEN2 (Pin A21)
Bit 3
DYN0 (Pin C22)Time Constant Switch Corresponding Inputs

Bit
Corresponding Control Port InputBit 0
TC0(Pin C19)
Bit 1
TC1(Pin A19)
Bit 2TC2(Pin C20)
Bit 3
TCSL (Pin A20)

Phase Switch Coarse Corresponding Inputs

BitCorresponding Control Port Input
Bit 0PH4(Pin A26)
Bit 1PH5(Pin C26)
Bit 2PH6(Pin A25)
Bit 3PH7(Pin C25)

Phase Switch Fine Corresponding Inputs

BitCorresponding Control Port Input
Bit 0PH0(Pin A28)
Bit 1PH1(Pin C28)
Bit 2PH2(Pin A27)
Bit 3PH3(Pin C27)

Remote Control Example

For example, to select a switch setting code “6”, you haveto connect a “High”- level signal to the corresponding
control input pins Bit 1 & Bit 2. Mixed operation, e.g. local
phase settings and remote controlled sensitivity setting, isalso possible.

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Datasheet

LIA-MVD-200-H
Dual Phase Lock-In-Amplifier Module

Dimensions

Top View

Front View

Sensitivity

Phase
Coarse

6 4,4 m m

TimeConstantH 1f F 0V
L 2f S 2V

Phase
Fine

Dynamic
Reserve
Mode

Power
Unlocked
Overload
Reference
Threshold
PLL

LOCK-IN-AMPLIFIER
LIA-MVD-200-H

Dual Phase, 50 Hz - 120 kHz

22 3,0 m m

1 05 ,0 m m

Back View

REFERENCE R - OUTPUT Y - OUTPUT(MAGNITUDE) (QUADRAT.)INPUT

X - OUTPUT(IN-PHASE)

CONTROL

POWER

SIGNALINPUT

PIN 2 PIN 1-15V +15V

PIN 3
GND

Case Material:
Al, natural anodised

Optional Extensions

FEMTO Messtechnik GmbHPaul Lincke-Ufer 34
D-10999 Berlin  Germany
Tel.: +49 (0)30 – 4 46 93 86
Fax: +49 (0)30 – 4 46 93 88
e-mail: info@femto.de
http://www.femto.de

Reference Oscillator Module

Model No.: SOM-1- Frequency Range 5 Hz ... 130 kHz, User adjustable- Output Voltage 0 ... 2 Vrms, User adjustable- 100 ppm/K Amplitude Accuracy

Factory Set

1 kHz, 1 Vrms

DZ01-1074-10

Specifications are subject to change without notice. Information furnished herin is believed tobe accurate and reliable. However, no responsibility is assumed by FEMTO MesstechnikGmbH for its use, nor for any infringement of patents or other rights granted by implicationor otherwise under any patent rights of FEMTO Messtechnik GmbH. Product names
mentioned may also be trademarks used here for identification purposes only.
 by FEMTO Messtechnik GmbH
Printed in Germany

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