Tektronix K1297-G20 - Manual (Page 138)

Appendix A: Interfaces
A-38 K1297-G20 Monitor User Manual
V./X. Board
The V./X. interface module contains two socket connectors per V./X.
interface for line connection, which are designated as follows:
H “to DCE”
H “to DTE”
The interface standards V.24, X.21 and V.35 are supported.
The connection to the various interfaces is made with a special adapter
cable. Since the V./X. board can be used in K1297-G20 applications it is
shipped with monitoring and simulation cables. Be sure to use only the
monitoring cables for V.35, X.21 and X.24 (see figures in the appropriate
sections).