Electronic Equipment

Digital Storage Oscilloscope - A Tektronix 2221A , 100 MHz digital oscilloscope with IEEE 488 interface. 

Digital Storage Oscilloscope - A Hewlett-Packard 54601A, 4 channel 100 MHz digital oscilloscope with Fourier-Transform function and RS-232 interface. 

Analog Storage Oscilloscope - A Tektronix 466 , 2 channel 20 MHz oscilloscope.

Lock-in Amplifier - AFR has an EG&G Princeton Applied Research Model 5210 two phase lock-in amplifier suitable for use from 0.5 Hz to 120 kHz. This lock-in can easily be operated under computer control.