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MLIDA, Rev A
7 ADVANCED CONFIGURATIONS AND APPLICATIONS
The SR810 is a powerful instrument with many features. They are described in detail in the user’s
manual provided with the instrument. Some of the many possible configurations are discussed here. For
more details, refer to the SR810 user’s manual.
7.1 RATIO MODE SETUP
A reference input corrects the measurement channel to compensate for source drift. The LIDA-
SRS-KIT system allows you to take readings in a ratio mode by providing a reference channel
input. This serves to improve the accuracy of response measurements by removing the source
variability.
Any detector type can be utilized for reference if its signal level is compatible with the limited
dynamic range of the reference channel. The range is -10.5 V to +10.5 V and the resolution is 16
bits (1/3 mV). The input impedance is 1 MΩ. The AUX 1 and 2 inputs on the rear panel of the
SRS SR810 may be displayed on the CH1 display. These inputs allow signals other than the lock-
in outputs to be acquired and stored. Furthermore, ratio quantities, such as X/Aux1, may be
displayed. TracQ Basic can display the ratio quantities. This data is displayed on the SR810
Instrument Control Panel
Items needed to build the setup shown in Figure 19:
•
LIDA-SRS-KIT
•
Monochromator (example: Oriel model CS260-USB-1-FH-A)
•
Amplified, calibrated detector (example: Oriel model DET-L-SIUV-R-C)
•
Amplified, uncalibrated detector (example: Oriel model 71883)
•
Tunable Light Source, 300W Xenon (Oriel model TLS-300X)
•
Beamsplitter (example: Newport model 20B20NC.1)
Figure 17: Reference Connections
