Paul Burridge wrote:
I have a spare RF signal generator that has an unmarked output from a
type of socket I've never seen before.

Would it be a car-type output socket (deep recessed centre pin)? Would
it be an old Advance generator with the rounded corners? If so, it's
almost certainly 75R.

What's the simplest way of establishing its output impedance? I've had
a few ideas but no doubt someone out there will know of something
better, since I always seem
to end up making unnecessary work for myself.

If it has a resistive output attenuator with no DC blocking capacitor,
you can switch to maximum attenuation (minimum output) and measure Zout
with an ohm-meter.


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)

http://www.ifwtech.co.uk/g3sek