One of the nice things about the HP8657 is it's electronic RF output attenuator. The HP8656B uses relays in it's RF output attenuator. The relays have a short lifetime and can't be cleaned or repaired. For this reason alone, I prefer the HP8657 over the HP8656.
Verified purchase: Yes | Condition: Pre-owned
Work like it was intended
Verified purchase: Yes | Condition: Pre-owned
I like old HP instrument due to its excellent build quality. Works great out-of-the shipping box. Stable sine wave through out the advertised range.
Verified purchase: Yes | Condition: Pre-owned
as described works fine
Verified purchase: Yes | Condition: Pre-owned
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