From old datasheet system 330MHz 4 x 1 Video crosspoint switch with Tally Outputs 330MHz, 4 x 1 Video crosspoint switch with Tally Outputs 330MHz/ 4 x 1 Video crosspoint switch with Tally Outputs
32 x 16 Nonblocking Video crosspoint switch with OSD Insertion and I/O Buffers 32 x 16 Nonblocking Video crosspoint switch with On-Screen Display Insertion and I/O Buffers