Tektronix BERTScope, Quick Start User Manual

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Operation
Operation
Front panel connectors and controls
Refer to the following illustration and table for information on the front panel connectors and controls.
Adjust the input settings after connecting the cables to the Data Input and Clock Output connectors and turning the
instrument on.
Figure 2: Front panel connectors and controls
Connectors/controls Description
1 Chassis ground Use this connector to connect a common ground to other instruments or to
connect a ground strap with a banana connector to the instrument to reduce
risk of static discharge while using the instrument.
2 DATA INPUT + and DATA
INPUT – Data input connectors. Connect a differential input from a signal source to these
connectors. To prevent damage to the high sensitivity data circuitry, ensure that
the input voltage does not exceed ±5 V range, 3 V
p-p
.
3 DATA and DATA
OUTPUT – Data output connectors. These are loop-through data differential data output
connectors. Terminate any unused output connectors to avoid re
fl ections that
can severely degrade performance.
4 CLK OUT Clock output connector. This is the recovered full rate clock connector.
5 SUBRATE CLOCK Subrate clock connector. This is the recovered clock connector with
programmable subrates. This signal can be connected to the trigger input of
an oscilloscope.
6 Display The display shows measured values on the left side of the display and the
device settings on the right side. The device settings can be controlled by
buttons beneath the display and the rotary knob.
CR125A, CR175A, CR286A Quick Start User Manual 7