Produced from 1986 to (?)
The Tektronix 1730 is a Television Waveform Monitor for the NTSC video standard. The 1731 is the PAL and the 1735 is a dual-standard sister model.
The 1730 can be coupled to a 1720 Vectorscope, they can be mounted side-to-side in a 19" rack.
1730 NTSC Dual Filter display