Tektronix KTTI-RS232

RS232 Communication and Digital I/O accessory, user-installable

The KTTI-RS232 Communication and Digital I/O Accessory provides instruments with an accessory card slot with an RS-232 interface.
The card provides six independently configurable digital input/output lines that can be used to control external digital circuitry, for example, a handler that is used to perform binning operations. The digital I/O port is a standard female DB-9 connector. You can also use these lines for triggering. The instrument can generate output trigger pulses and detect input trigger pulses.