To configure node for external reference source
Command syntax
cmd node cfg ref # source #
Parameter expected for ref #
Parameter Range: 0 – 4
Parameter expected for source #
Parameter Range: 0 - 5
0-3: Port X TT input
4: External (BNC) reference input
5: Disabled
[ctp_cmd@ctp_48 ~ 28]> cmd node cfg ref 0 source 4