Oscilloscope Utility Settings 18
InfiniiVision 7000B Series Oscilloscopes User’s Guide 391
To set the trigger out source
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
• Mask test pass/fail (see “Mask Test Trigger Output” on page 348.)
Trigger s
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 .
Source Frequency
This mode is only available when the oscilloscope is set to positive or
negative 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 . 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.
The Trigger Out connector also provides the User Cal signal. See “To
perform user calibration” on page 397.
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