Trio CS-1040, Instruction Manual, Page: 10 / 35

Fig. 3
(D
INPUT Jack
Vertical input for channel 2 trace in normal sweep opera-
tion. External horizontal input in X-Y operation.
© CH2 INV
In the NORM position (button released), the channel 2
signal is non-inverted. In the INV position (button
engaged), the channel 2 signal is inverted.
(0)
• POSITION, X-Y
Rotation adjusts vertical position of channel 2 trace.
In X-Y operation adjusts horizontal position of display.
@ MODE
Push button switch assembly; selects the basic operating
modes of the oscilloscope.
CH1: Only the input signal to channel 1 is displayed
as a single trace.
CH2: Only the input signal to channel 2 is displayed
as a single trace.
ADD: When both CH1 and CH2 buttons are engaged,
( C H 1 + C H 2 )
the waveforms from channel 1 and channel 2
inputs are added and the sum is displayed as a
single trace. When the CH2 INV @ button is
engaged, the waveform from channel 2 is sub-
tracted from the channel 1 waveform and the
difference is displayed as a single trace.
ALT: Alternate sweep is selected regardless of
sweep time as dual trace (CH1 and CH2) or tri-
ple trace (CH1, CH2 and CH3)
CHOP: Chop sweep is selected regardless of sweep
time at approximately 2 5 0 kHz as dual trace
(CH1 and CH2) or triple trace (CH1, CH2 and
CH3).
DUAL/
TRIPLE: When this button released, dual trace mode
allows to observe waveforms of channel 1 and
channel 2 input signals.
When enganged this button, if either ALT or
CHOP switch is pushed in, triple trace mode
presents traces of channel 1 , channel 2 and
channel 3 input waveforms.
(§) POWER, SCALE ILLUM
Fully counterclockwise rotation of this control (OFF posi-
tion) turns off oscilloscope. Clockwise rotation turns on
oscilloscope. Further clockwise rotation of the control in-
creases the illumination level of scale.
@ PILOT Lamp
Lights when oscilloscope is turned on.
@ -CTGND terminal/binding post.
Earth and chassis ground.
® PROBE ADJ.
Provides approximately 1 kHz, 0.5 Volt peak-to-peak
square wave signal. This is useful for probe compensation
adjustment.
1 0