Grass Valley VM 3000 System Controllers v.7.4 - Manual (Page 733)

P−1 VM 3000 Installation and Operating Manual
Appendix P
CE 3000 Matrix Control / PL 3000 Party Line Interface
SC 3000 Serial Control / VG 3000 Video Display / Status Generator
These controller boards, which were part of the original BCS 3000 Control System, have been replaced by the VM/SI 3000
Control Processors and the CM 4000 Control Module. As of Jupiter software release 7.1.0 they are no longer supported and
should not be used in systems with current software.