N3024F fibre connection to N3024 uplink not working

Hello,

I have installed an N3024F switch which acts as a distribution switch to the Up-link of N3024 switches on different floors. The switches on other floors are N3024 24 port Ethernet.

When I plug in my 331-5309 1Gb transceiver I get no lights on either the N3024F or any of the N3024 switches in the field. Its as if its not reading it.

Any ideas?

Thanks

Ken