198 6000 Series Oscilloscope User’s Guide
4 Triggering the Oscilloscope
The Trigger Out connector
You can select one of the following signals to be output at the
TRIG OUT connector on the rear panel of the oscilloscope:
• Triggers
• Source frequency
• Source frequency/8 (except 100 MHz BW models)
Triggers
This is the default selection. In this mode, a rising edge is output
each time the oscilloscope triggers. This rising edge is delayed
17 ns from the oscilloscope’s trigger point. The output level is
0-5 V into an open circuit, and 0-2.5 V into 50 Ω.
Source frequency
This mode is only available when the oscilloscope is set to edge
trigger on a front-panel source (analog channel or the external
input of a 2-channel oscilloscope). In this mode, the TRIG OUT
BNC is connected to the output of the trigger comparator. The
output level is 0-580 mV into an open circuit, and 0-290 mV into
50 Ω. The maximum frequency output is 350 MHz due to the
bandwidth limitation of the TRIG OUT BNC amplifier. This
selection is useful for driving an external frequency counter.
Source frequency/8
This selection produces the same signal as described in Source
frequency except the output frequency is one-eighth of the
trigger comparator output frequency. This mode is useful when
your input signal is faster than 350 MHz. This selection is not
available on 100 MHz bandwidth model oscilloscopes.
The Trigger Out connector also provides the User Cal signal. See “User
Calibration” on page 102.
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