10 Mhz Reference Out

This is my 1st time using a GPDSO. I have verified the GPDSO is locked and the 10 MHz Reference signal is locked on the GPDSO as well. I decided to hook my oscilloscope to the 10MHz Reference out and look for the signal. I am using a 50 ohm bnc cable about 3' long. I found I don't see any signal at all on the port.

I assumed I would be able to see the reference clock output signal. I tested the setup using my Elecraft signal generator and had no issues seeing the 40 meter reference signal

I am curious to know if any one else has measured the 10Mhz reference signal out source.

Regards