Tektronix WFM 601A, WFM 601E, WFM 601M - page 32

Installation
1–14 WFM 601A, WFM 601E & WFM 601M User Manual
Figure 1–8 shows the Eye Pattern with a good return loss terminator. Figure 1–9
shows the distorted Eye Pattern of a terminator having only 13 dB return loss
(capacitive) at 100 MHz. Terminations with aberrations under 10% are accept-
able.
Figure 1–8: Eye Pattern display of a termination with good return loss
Figure 1–9: Eye Pattern display of a termination with poor return loss
Compatibility of BNC Center Pins. Most video equipment BNC connectors,
whether 50 or 75 W, use a 50 Wstandard center pin. Some laboratory 75 WBNC
connectors use a smaller diameter center pin. The BNC connectors on the
WFM 601M are designed to work with the 50 Wstandard (large diameter) center
pins.
Do not use connectors or terminators with the smaller center pins. They could
cause intermittent connections.