10. SMA connectors

Warning

VLDB+ V1 known issues: Section 14.1.3, Section 14.1.1.

The VLDB+ features 6 SMA connectors.

Fig. 10.1 VLDB+ SMA connector

• The first SMA pair (J8 and J9) corresponds to the lpGBT’s Elink output clock 0 ECLK[0]P/N.
• The second SMA pair (J6 and J7) corresponds to the lpGBT’s Phase Shifter output clock 1 PSCLK[1]P/N.
• Finally, the last pair (J4 and J5) corresponds to the lpGBT’s Reference input clock REFCLKP/N which is needed to make the lpGBT lock in External lockmode and Simplex Tx mode.