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2-3-6
X-y Operation
The internal timebase of the Model 7040A are not utilized in X-Y operation
deflection in both the vertical and horizontal directions is via external signals.
Vertical channel 1 serves as the X-axis (horizontalhignal processor, so hori
zontal and vertical axes have identical control facilities.
All of the V MODE, and trigger switches, as well as their
associated controls and connectors, are inoperative in the X-Y mode.
To set up the Model 7040A for X-Y operation, proceed as follows;
1.
Tum the A TIME/DIV switch (24) fully clockwise to its X-Y positions.
CAUTION : Reduce the trace intensity,
lest the undeflected spot damage the
CRT phosphor.
2. Apply the vertical signal to the CH2 or Y IN connector (10), and the hori
zontal signal to the CHI or X IN connector(9). Once the trace is deflected,
restore normal brightness.
3. Adjust the trace height with the CH2 VOLTS/DIV switch (14). and the trace
width with the CHI VOLTS/DIV SWITCH (13). The PULL X5 MAG switches(15)
and (16) on the VARIABLE controls can be used if greater is necessary,
so leave the TIME VARIABLE control (27) knob pushed in.
4. Adjust the trace position vertically (y axis) with the CH2 Vertical POSITION
control (20). Adjust the trace position horizontally (X axis) with the
Horizontal POSITION control (29); the CHI Vertical POSITION control has no
effect during X-Y operation.
5. The vertical (Y-axis) signal can be inverted by pulling the CH2 Vertical
POSITION knob to activate the PULL CH2 INV switch (20).
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