A system and method for electronically managing discovery pleading information in which a user having an instant discovery request can search a repository to access prior discovery requests and corresponding responses to aid in formulating a response to the instant discovery request. Also disclosed are methods for labelling target biological materials employing the quinacridone dyes and use of the labelled materials in biological assays. Rather than setting the capacitance values to a desired capacitance value, a system for adjusting the time constant includes circuitry for measuring an output frequency and for comparing that to a certified frequency source wherein the time constant is adjusted by adding or removing capacitors from the capacitor array until the frequency of the internal clock matches an expected frequency. The receiver is build from a receiving lens an infrared filter a non linear crystal to convert the mid infrared signal back to the low infrared region with a second pump laser, An EDA amplifies this signal and sends it to an optical fibber in the original low infrared wavelength for further transmission.