The 117 is a Low-Noise Preamplifier plug-in for use in the 124 & 126 Lock-In Amplifier and the 114 Signal COnditioning AMplifier. The unit is self-contained and derives power from the instrument with which it is being used.
Input Impedance: 100 Mohms SE/DE
Bandwidth: 0.2 Hz to 210 kHz
Common Mode Rejection Ratio: 120 dB at 60 Hz
Maximum Input Voltage: ?200 VDC