Sundance SMT702 - Manual (Page 24)

4.2.8
SHB Connector
An SHB Connector is available from the FPGA. It maps 32 single-ended data lines
and a set of control signals including a clock.
It can be used to transfer samples to an other Sundance module, for instance the
SMT712.
A second SHB connector is available on the standard version of the SMT702 (not
available on the option -HYBRPXI32 and –CPCI32).
Note that in order to achieve transfers to an SMT712 board, the standard SHB
interface can’t be used but requires its DDR version (implement into default
firmware).
The SHB transfers have been tested at 375MHz, DDR mode, 32-bit words, giving a
continuous transfer speed of 3GBytes per second.
4.2.9
Power dissipation
The SMT702 has been designed to work in a PXI Express chassis, which has built-in
cooling facilities. It provides enough airflow and has a fan regulation.
PXI Express chassis are specified so they can dissipate 30 Watts of heat.
The following picture shows the direction of the forced air flow across a 3U PXI
Express module:
Figure 10 - Forced airflow for a 3U module.
A PXI Express rack has a capacity of dissipating 30 watts of heat per slot using
forced air-cooling system via typically two 110-cfm fans with filter.
In case the SMT702 is used in an other type of chassis, some similar airflow must be
implemented as the board requires it.
The SMT702 has been developed using the following PXI Express rack from Nation
Instrument: PXIe-1062Q.