What cables/connectors must be used to connect 10GHz frequency counter to antennas?

For example, for this frequency counter
http://www.ebay.com/itm/HP-Agilent-5...-/230652979320
there is a port called "500MHz to 20GHz" with a huge connector.
HP Agilent 5350B Microwave Frequency Counter. Would it be the same for other frequecny counters of ~10GHz range?
Also there are horn antennas with something like SMA connector on their back (somehow coupled to waveguide). How to connect such horn antenna to frequency counter?

From the photo of 5350B i guess that Type N connector (male) must be used with frequency counter. Antennas available on EBay use SMA (male/female) or maybe Type N connector too...

Also i've seen one time some kind of adapter on the frequency counter. I guess it was Type N (male) to SMA adapter. Then sma cable was connected to antenna (male-male or female-female maybe).

Please lead me to the right way of choosing cable/adapters.. Thank you!

Coaxial connectors and their frequency limit:

http://en.wikipedia.org/wiki/N_connector
http://en.wikipedia.org/wiki/SMA_connector