The Link Electronics IEC-786 is a Closed Caption decoder for the NTSC system; data channels and text select are offered for user selection. The required input signal is composite video with caption data on line 21.
XDS
Extended Data Services is offered for such signals as "V-Chip" information.
Differential Input
A complementary differential input amplifier assures high common mode rejection while its phase-linear keyer cleanly inserts decoded characters into the video image.
Application
This device is useful when a monitor without a Closed Caption decoder is used in broadcast monitoring; this device can be mounted close to the monitor because of its compact size.