Installation
To install for monitoring composite signals:
1.
Connect your sources to the CMPST A
or CMPST B loop-through inputs on the
rear panel.
Option CPS
Line Termination
The waveform monitor uses passive loop-through analog and reference inputs. Accordingly, the loop-through inputs must be
terminated externally. It is important that this external termination meet accuracy and return loss requirements.
If the waveform monitor is installed to monitor an operating link, the destination receiver and the connecting cable serve as
the termination. This monitoring connection is best because it checks the performance of the entire path. The return loss of
the waveform monitor is sufficiently high that, in most cases, the destination receiver sets the system return loss.
In cases where the waveform monitor is placed at the end of a link, a BNC termination must be installed on one side of the
loop-through analog or reference connector. The termination must be 75
Ω
and DC coupled (good return loss extends to
DC). An appropriate termination would be Tektronix part number 011-0102-00. It is a 75
Ω
, End of Line termination.
Compatibility of BNC Center Pins
Most video equipment BNC connectors, whether 50 or 75
Ω
, use a 50
Ω
standard center pin. Some laboratory 75
Ω
BNC
connectors use a smaller diameter center pin. The BNC connectors on the waveform monitor are designed to work with the
50
Ω
standard (large diameter) center pins.
Do not use connectors or terminators with the smaller center pins. They could cause intermittent connections.
6
Quick Start User Manual
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