Agilent 33600A: Output off means output off

Lower-end agilent synthesizers such as the 33250A have the quirk that they don't actually switch the output off - they just attenuate it by 50dB. I got to play around with the new 33600A series (up to 120 MHz, 2 channel), and this one is different: Off means attenuate by 134dBm, which is "off" in all practical cases I can think off.