Check the listing for details. 8596E Spectrum Analyzer option boards 151, 160 and cable. Condition: Used. Listed at 68.00 USD. DSP, Fast ADC and Digital Demodulator (Option 151) For HP 8593E, HP 8594E, HP 85953, and HP 85963 only. It requires option 160 butNOT ROMS or app sw. Many of the capabilities of the 160 board require ROMs and I believe, application software not included.