Basic Measurements
1760 SeriesComponent Waveform/Vector Monitor User Manu al 4-21
Using the Bowtie Displa y
When used withthe Bowtie signal, the Bowtie display is a
high-resolutiontiming indicator.
Route a Bowtie test signal from the generator, through the
equipment under test, and connect to the 1760--Series rear-
panel CH-A1, A2, and A3 connectors. Use caution when
deciding where the Bowtie signal is routed; when transcoded
to GBR or encoded to composite, it produces and illegal sig-
nal with potential unwantedside effects.
For a Bowtie display, pusht he 1760--Series front-panel BOW-
TIE button. A two-line display of component signals will be
present: line one (left half of display) shows CH-1 minus
CH-2 and line two shows CH-1 minus CH-3. See
Figure 4-17.
If the bowtie patterns have a sharp null, and the null is lo-
cated in the center of each line, both timingand relative am-
plitudes arecorrect. Relative amplitude errors will decrease
the depth of the null. Interchannel timingerrors will move
the positionof the null.
Figure 4-17. Bowtie d isplay showing a sharp null.