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Reference
102
TDS1000/2000-Series Digital Oscilloscope User Manual
Source Options.
Source option
Details
Numbered chan-
nels
Triggers on a channel whether or not the waveform is
displayed
Ext Does not display the trigger signal; the Ext option uses the
signal connected to the EXT TR IG front-panel BNC and
allows a trigger level range of +1.6V to --1.6V
Ext/5 Same as Ext option, but attenuates the signal by a factor of
five, and allows a trigger level range of +8V to --8V.; this
extends the trigger level range
AC Line This selection uses a signal derived from the power line as
the trigger source; trigger coupling is set to DC and the
trigger level to 0 volts
Use when you need to analyze signals related to the
frequency of the power line, such as lighting equipment
and power supply devices; the oscilloscope automatically
generates the trigger, sets the Trigger Coupling to DC, and
sets the Trigger Level to zero volts
The AC Line selection is available only when you select the
Edge trigger type
NOTE. To view an Ext, Ext/5, or AC Line trigger signal, push and
hold down the TRIG VIEW button.