Used Spellman SA6PN4/208/3PHASE

HP 8562E Spectrum Analyzer. Continuous 30 Hz to 13.2 GHz sweeps. Resolution bandwidths: 1 Hz to 100 Hz. Low phase noise and wide dynamic range. Precision time base and 1 Hz counter resolution. Adjacent channel power, channel power, carrier power and gated video measurements. Includes 85620A mass memory module. Calibrated & Certified at additional price.

HP 70902A IF Section Module. 10 Hz to 300 kHz.

HP 70903A IF Section Module. 100 kHZ to 3 MHz.

HP 70100A Power Meter Module. 100 kHz to 50 GHz.

HP 70100A Power Meter Module. 100 kHz to 50 GHz.

HP 70310A Precision Frequency Reference Module.

HP 70907B External Mixer Interface Module.

Programmed test Sources D310 Frequency Synthesizer .1 to 310 Mhz. PTS D310 DUAL CHANNEL FREQUENCY SYNTHESIZER. two fully independent channels, each covering 0.1-310 MHz, +3 to +13 dBm output, low phase noise  fast switching, 3-20 µs,fully programmable, BCD or GPIB, DDS standard with phase-continuous switching, low power consumption, high reliability

Agilent 86142B Optical Spectrum Analyzer No Options installed. The Keysight 86142B is a benchtop optical spectrum analyzer (OSA) that is best suited for WDM component and system test applications where power and wavelength accuracy, dynamic range and low polarization dependency are critical. The high performance capability combined with the advanced feature set and on-board measurement applications enables you to make highly accurate measurements quickly and easily. These advanced features have been tailored towards increasing your product yields, maximizing manufacturing capacity and minimizing costs. The onboard measurement applications have been designed for ease of use requiring minimal training while retaining flexibility to customize measurements for individual needs.115V, 50/60Hz

Keithley 6517A Electrometer High Resistance Meter. The half-rack-sized Model 6517A has a special low current input amplifier with an input bias current of 0.75fA p-p (peak-to-peak) noise and on the lowest range. The input impedance for voltage and resistance measurements is 200TΩfor near-ideal circuit loading. These specifications ensure the accuracy and sensitivity needed for accurate low current and high-impedance voltage, resistance, and charge measurements in areas of research such as physics, optics, nanotechnology, and materials science.