Tektronix TDS3000B Series - Page 146

Trigger Controls
3-64
TDS3000B Serie s User Manual
Edge Trigger
Use Edge triggering to trigger on the rising or falling edge of the
input signal at the trigger threshold.
Bottom Side Description
Type = Edge
Source Ch1 - Ch4 Sets the trigger source to a specific
channel.
AC Line Sets the trigger source to use the AC line
signal (not available when operating with
batteries).
Ext Sets the oscilloscope to trigger on the
external trigger source. Ext/10 attenuates
Ext/10
e
e
a
g
g
e
s
o
u
c
e
/
0
a
e
u
a
e
s
the external trigger signal by a factor of
10. See page 3--67.
Ext Probe
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 the 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.
Vert Sets the trigger source to the lowest-
numbered active channel in the display.