Tektronix DL-11 Delay Line, 47.5ns

The Tektronix DL-11 Delay Line provides approximately 47.5ns of delay from the signal input to the signal output. The delay lines allow you to view the triggering event of a signal displayed on a sampling oscilloscope, such as the 11801C and CSA803C. The DL11 has approx 5Ghz BW, and attenuates the signal by 50%.

A delay line can reduce horizontal jitter and provide more accurate measurements, because it lets you take measurements on the first rising edge of the triggering event.