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Summary of Contents for THORLABS LIA100
- Page 1 Model LIA100 Lock-in Amplifier Operations Manual Thorlabs, Inc 435 Route 206 Newton, NJ 07860 P-(973) 579-7227 F-(973) 300-3600 www.thorlabs.com Doc. 0426-D01 Rev C 2/27/98 Page 1 of 10...
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Page 2: Table Of Contents
Table of Contents Chapter Description Page Introduction Specifications Operating Instructions Front Panel Controls 3.1.1 Signal Input 3.1.2 Reference Input 3.1.3 Sensitivity Rotary Switch 3.1.4 Monitor Output 3.1.5 Output Time Constant Rotary Switch 3.1.6 Signal Output 3.1.7 10X Expand Rear Panel Controls 3.2.1 Output Offset Adjust 3.2.2... -
Page 3: Introduction
Chapter 1.0 Introduction The Thorlabs Model LIA100 Lock-In Amplifier is designed to deliver high performance in a compact, cost-effective package. By eliminating some of the less-used features of conventional lock-in amplifiers, the LIA100 offers the performance of units many times its price. -
Page 4: Specifications
Chapter 2.0 Specifications Input: Single-ended input Input Impedance: 1MΩ in parallel with 30pF Sensitivity (AC Amp Gain): 0, 20, 30, 40, 50, 60dB Full-scale Input: 1V, 100mV, 30mV, 10mV, 3mV, 1mV Frequency: 1Hz to 20kHz ±10V Maximum Input Voltage: 25nV / √Hz @ 1kHz Noise: Monitor Output: Buffered AC amplifier output... -
Page 5: Operating Instructions
Chapter 3.0 Operating Instructions The LIA100 is very easy to operate. Typically, a DC signal, which is modulated through an application dependent means, is applied to the input BNC. A reference signal of the same frequency and phase as the modulated signal is applied to the REF input BNC. An internal phase-sensitive detector (PSD) converts the modulated signal back to the original base- band DC signal. -
Page 6: Output Time Constant Rotary Switch
DC offset of the output signal. This is useful for nulling the output of the LIA100. 3.2.2 ON / OFF Switch - Toggle switch for the LIA100 power. 3.2.3 DC Input Jack - 5-pin DIN connector with the following pin-outs:... -
Page 7: Internal Jumpers And Configuration
-12VDC REAR PANEL DC INPUT Internal Jumpers and Configuration - There are jumpers provided on the LIA100 printed circuit board used for configuring and calibrating the unit. Figure 2 shows the locations of the PCB components. Accessing the LIA100 PCB: •... -
Page 8: Jp1 - Input Impedance
SW2 - Reference Polarity Switch - This toggle switch is provided for selecting between a 0° and a 180° phase-shifted reference. When the toggle switch lever is pointing towards the 0° label, the LIA100 is set to expect an non-inverted reference (i.e. reference is high during the signal positive period and low during the signal negative period.). -
Page 9: Calibration
Chapter 4. Calibration The LIA100 come calibrated from the factory. However, if it should become necessary to recalibrate the unit, please follow the steps below: RP1 - Input Amplifier Null Adjust - This adjustment allows any offset voltage on the AC amplifier output to be nulled. -
Page 10: Rack Mounting Option
Section 5. Rack Mounting Option Thorlabs offers a rack-mounting bracket for conveniently mounting up to 3 LIA100 units in a standard 19” rack. This rack-mounting bracket can also be used for other Thorlabs products (i.e. MDT691 High Voltage Piezo Driver). Please call Thorlabs for more information about this option.
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