User Manual

RIGOL 1 Quick Start
MSO4000/DS4000 User’s Guide
1-14
Rear Panel Overview
Figure 1-12 Rear Panel Overview
1. Trig Out/Calibration
Various kinds of signals can be output from this connector (press Utility 
AuxOutput to select the desired output type).
1) TrigOut: the oscilloscope sources a signal which has a frequency
proportional to the trigger rate of the instrument. Connect the signal to the
waveform display device and measure the frequency of the signal, the
measurement result is the same as the current capture rate.
2) Fast: the oscilloscope outputs a fast edge signal with 500 ps rise time which
can be used in the self-calibration of the oscilloscope.
3) GND: the oscilloscope ground voltage level.
4) PassFail: the oscilloscope outputs a TTL high level when a failed waveform
is detected and low level at the beginning of the next waveform. This signal
can be transmitted to other control system for easy view of the test result.
2. Reference Clock
Provides a more precise sample clock signal for the oscilloscope. It can also
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