Tektronix PSM3000 Series, User Manual

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Pulse Pro fi ling Application
However, the trace data has much higher resolution. If you want to see more
detail on a 10,000 point trace, for example, you can use the zoom icons on the
Display Control toolbar. (See page 44,
Zoom In and Out .)
Table 3: Sweep time values
Sweep time Time between samples Length of trace
10 μ s 0.0208 μ s 480 points
20 μ s 0.0208 μ s 960 points
50 μ s 0.0208 μ s 2400 points
100 μ s 0.0208 μ s 4800 points
200 μ s 0.0208 μ s 9600 points
500 μ s 0.05 μ s 10,000 points
1 ms 0.1 μ s 10,000 points
2 ms 0.2 μ s 10,000 points
5 ms 0.5 μ s 10,000 points
10 ms 1.0 μ s 10,000 points
20 ms 2.0 μ s 10,000 points
50 ms 5.0 μ s 10,000 points
100 ms 10.0 μ s 10,000 points
200 ms 20.0 μ s 10,000 points
500 ms 50.0 μ s 10,000 points
1 s 100.0 μ s 10,000 points
Reference Level. The Reference Level allows you to change the maximum value
displayed in the Panoramic and Measurement windows. It also allows you to
change the vertical scale in the Measurement window.
The vertical scale setting only applies to the Measurement window.
NOTE. The reference level and resolution settings are display functions that
change the formatting of the data that is presented, whereas offset and response
modify the measured values.
Offset.
This function applies a constant offset to all measured data. It shifts the
actual values of the measured data. Simple offsets can be useful, but they are
limited in that they are not sensitive to frequency. If there is a frequency sensitive
device in the measurement path, then every frequency change requires a change in
offset. In this case, the Response function may be more appropriate.
The Offset function must be enabled to affect measurements. The Offset
annunciator is visible above and to the right of the measurement trace when the
Offset function is enabled.
RF and Microwave Power Sensors/Meters 37