Input Terminals - Tenma 72-6802 User Manual

4 Trigger
Selects the triggering slope.
SLOPE
When in the "+" position (
Switch
triggers when the positive slope of the trigger
source signal crosses the trigger level.
When in the "–" position (
triggers when the negative slope of the trigger
source signal crosses the trigger level.
5 Trigger
Selects the signal on which the oscilloscope sweeps.
SOURCE
Switch
CH1 CH1 signal becomes the trigger
source.
CH2 CH2 signal becomes the trigger
source.
LINE AC power line signal becomes the
trigger source. Useful when the input
signal synchronizes with the power
line frequency.
EXT The external trigger input (TRIG IN
terminal) signal becomes the trigger
source.
6 TRIG IN
Accepts an external trigger source signal. The
Terminal
signal becomes active when the trigger SOURCE
switch is in the EXT position.
Input impedance: 1MΩ // 25pF
PANEL OVERVIEW
), the oscilloscope
), the oscilloscope
21

Input Terminals

1 CH 1 (X)
Accepts the CH1 input signal. In X‐Y mode, the
Input
CH1 input signal becomes the X‐axis.
Terminal
2 AC/GND/
Selects the coupling mode for the input signal.
DC Switch
AC
The oscilloscope block DC components
included in the input signal.
GND
Shows the ground (zero volt) level on
the display. This mode is only for
checking the reference level; input
signal does not appear on the display.
DC
The oscilloscope displays all of the
input signal.
3 GND
Accepts a ground wire. The GND terminal is
Terminal
connected to the oscilloscope mainframe.
4 CH 2 (Y)
Accepts the CH2 input signal. In X‐Y mode, the
Input
CH2 input signal becomes the Y‐axis.
Terminal
•
For X‐Y mode details, see page33.
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72-6802 User Manual