I am quite new to using the 33120a that I bought recently. I have checked this forum and other sources but can't find an answer to my question.
I have hooked it up to two different scopes, one at a time, one being an old HP 1740A (still in very good order) and also to my Lecroy Waveace 2004. Both scopes show a quite nice (some ringing) signal on the sync-output up to 15 MHz, but the main output shows more of a sine wave signal on both scopes the higher the frequency gets.
I have used an RG-58 cable with a T-connector at the scope end with a 50 Ohm terminator (also tested the 50 Ohm input on the 1740A but got same results, without the terminator then) when making these measurements.
Am I making something wrong or what could be the cause for the square wave output looking like a sine wave when it gets above 5-7 MHz (approximately)?
Best regards,
Martin