SNOSDC1 June 2024 LMH1229
ADVANCE INFORMATION
The LMH12x9 can be configured as a cable equalizer with loop-through output. The LMH12x9 takes in SDI data at the SDI_IN adaptive cable equalizer input and outputs the reclocked SDI signal at OUT0 (primary output) and OUT1 (optional secondary output). Meanwhile, a redundant reclocked loop-through SDI signal is output on SDI_OUT for system monitoring or cascade purposes.
Figure 7-3 shows a typical application of an LMH12x9 as a cable loop-through device. In this example, the LMH12x9 provides an SDI signal to the SDI FPGA on both OUT0 and OUT1. Concurrently, the equalized and reclocked SDI_IN signal is sent to the loop-through SDI_OUT cable driver output. Meanwhile, the FPGA sends post-processed SDI data out on an LMH1228 dual cable driver with integrated reclocker.