GS1528 HD-LINX II Multi-Rate SDI Dual Slew-Rate

Cable Driver

Data Sheet

16632 - 9

August 2010

8 of 13

Figure 3-1: Output signal for 270Mb/s input

Figure 3-2: Output signal for 1.485Gb/s input

When measuring return loss at the GS1528 output, it is necessary to take the

measurement for both a logic high and a logic low output condition. This is because the

output protection diodes act as varactors (voltage controlled capacitors) as shown in

Figure 3-3.

Consequently, the output capacitance of the GS1528 is dependent on the logic state of

the output.

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