I have an 8594E Spectrum Analyzer. The front panel indicates 50 ohms, and it is accurate with a 50 ohm signal generator. This unit says it has opt 001 (75 ohms) when the "list options" softkey is pressed in the configuration screen. I think someone possibly tried to convert it to 75 ohms by installing the calibration data or some other software means but the unit gives every indication that its really 50 ohms. Even the rear panel option list does not indicate opt 001. Does anyone know how to remove "opt 001" from the "list options" screen? Thanks ! Rick
Preset
Frequency, -2001 Hz
Amplitude, More 1 of 2, Input Z 50-ohm
Amplitude, Scale Log Lin (Log), More 1 of 2 Amptd Units dBm
Amplitude, Scale Log Lin (Lin), More 1 of 2 Amptd Units dBm
Cal, More 1 of 4, More 2 of 4, Service Cal, Stor Pwr On Units