The TB-20 Tally Box Converter from Datavideo is used to connect the ITC-100 Datavideo eight-user wired intercom system to the AG-HMX100 Panasonic switcher. It uses a 25-pin sub-D connector to extend the ITC-100 bi-color tally indicator function which indicates Live and Cue information. The cable can be reworked for use with other Panasonic switcher models.
A custom-made cable to match the tally pin outs from the Panasonic switcher to the TB-20 is required.
Datavideo TB-20 Specs
AG-HMX100 Panasonic switcher
1 x 25-pin sub-D male, tally input
1 x 15-pin sub-D male, tally output A
1 x 15-pin sub-D male, tally output B