User manual

Reference
Maximum o f 500 M
S/s for 25 MHz and 40 MHz models
Maximum of 1 GS/s for 60 MHz, 100 MHz or 150 MHz models
At 100 ns and faster settings, this sample rate does not acquire 2500 points. In this
case, a Digital Signal Processor interpolates points between the sampled points to
make a 2500 point waveform record.
Peak Detect. Use Peak Detect acquisition mode to detect glitches as narrow as
10 ns and to limit the possibility of aliasing. This mode is effective when at the
horizontal scale setting of 5 ms/division or slower.
Peak Detect acquisition intervals (1250)
• Sample points displayed
Peak Detect mode displays the highest and lowest acquired voltage in each interval.
NOTE. If you set the horizontal scale (seconds/division) setting to 2.5 ms/div or
faster, the acquisition mode changes to Sample because the sample rate is fast
enough that Peak Detect is not necessary. The oscilloscop
edoesnotdisplaya
message to tell you that the mode was changed to Sample.
When there is enough waveform noise, a typical peak dete
ct display shows large
black areas. The oscilloscope displays this area with diagonal lines to improve
display performance.
Typical peak detect display
TBS1000 peak detect display
Average. Use Average acquisition mode to reduce random or uncorrelated noise
in the signal you want to display. Data is acquired in sample mode, then a number
of waveforms are averaged together.
Select the number of acquisitions (4, 16, 64, or 128) to average for the waveform.
Run/Stop Button. Push the Run/Stop button when you want the oscilloscope to
continuously acquire waveforms. Push the button again to stop the acquisition.
76 TBS1000 Series Oscilloscopes User Manual