Reference
Bottom Side Description
Ch1, Ch2 (Ch3,
Ch4)
Sets the slew rate signal source.
Ext
Ext/10
Sets external or external divided by 10 as the
signal source.
Ext Pro be nnX
Voltage / Current
(4-channel only)
Set this value to match the attenuation factor
and the type of probe (voltage or current) that is
attached to th e external trigger connector. Push
the menu button to select the probe type. Use
the general purpose knob to set the attenuation
factor. The default values are 1x and voltage.
Source
AC Line Sets the AC line frequency as the trigger source.
This trigger source is only available wh en the
oscilloscope is connected to AC power.
Vert
Sets the lowest-numbered displaye d channel
as the trigger source.
Alternating (all
active channels)
Sequentially uses each active channel as a
trigger source, from the lowest-numbered
active channel to the highest-numbered active
channel. (See page 115. )
Positive
Negative
Polarity
Either
Sets the source signal slew rate polarity on
which to trigger.
Slew Ra te < N
Slew Ra te > N
Triggers the oscilloscope when the signal slew
rate is less than or greater than the speci fi ed
slew rate N.
Slew Ra te = N
Slew Ra te ≠ N
Triggers the oscilloscope when the signal slew
rate is equal to or not equal to the specified slew
rate N within a ±5% tolerance.
Trigger
When
Delta TimeN
Shows the delta time component N of the slew
rate, as set using the general purpose knob.
130 TDS3000C Series Oscilloscope User Manual
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