Trigger Lines for PXI-2530 in Chassis 1045 not visible

Hi,

I have 4 PXI 2530 Multiplexers in a 1045 Chassis

I would like to use handshaked scanning with PXI 4072

But it Fails!

There are not Trigger TLL0-7 Support for 2530

Whats wrong?

Using latest Drivers.

Regards

Juergen