I am trying to control a Projection Design Optix using TSU9600 - RFX9600.

I have the control document off the PD wesbite and have follwoed all the setup instructions:
I am using a pin to pin cable:
Pin1-Pin1
Pin2-Pin2
Pin3-Pin3
Pin5-Pin5

Default code for Power On in the documentation is:
:POWR1'CR'

I have tried all the following commands with no success:
:POWR1'CR'
:POWR1\r
:POWR1\r\n
:POWR1\R
:POWR1\cr

Any ideas ??