R4 is only needed if it is preferred to measure the LVDS output directly across the component, or if the board is being used to feed directly to the inputs of another interconnect device such as an FPGA. Otherwise it can be left uninstalled.

Figure 6-3 Output Side Schematic

J8 and J9 are installed with 0.1 uF capacitors. If probes are unavailable to measure the LVDS output across R4 or with a differential probe, these capacitors allow for the AC portion of the signal to be seen on a 50 Ω terminated scope. If equipment is available to measure the LVDS output with a respect to R4 or with a differential probe, then J8 and J9 can be replaced with 0 Ω resistors to keep the DC integrity of the output signal.

Figure 6-4 Differential Output of TLV3604EVM.