X-Y Operation And Ext Hor Operation - Promax OD-514B Instruction Manual

OD-514B, OD-515B & OD-545B INSTRUCTION MANUAL
To obtain the subtraction, proceed as before but now push the CH2 INV [36] key.
The resultant trace will be the algebraic difference of the CH1 and CH1 signals. Now, if the
input signals are in phase, the resultant trace will be the arithmetic difference of the
individual traces (for ex. 4.2 div – 1.2 div = 3.0 div). If the input signals have a phase
difference of 180 º, the resultant trace amplitude will be the arithmetic sum of the individual
traces (for ex. 4.2 div + 1.2 div = 5.4 div).

4.3.4 X-Y Operation and EXT HOR Operation

Select X-Y Operation engaging X-Y switch [27].
The internal sweep circuit is disconnected and trace in the horizontal direction is
driven by the signal selected by the SOURCE switch [26].
−
When the SOURCE switch is set to CH1 X-Y position, the oscilloscope operates as
an X-Y scope with the CH1 signal for the X-axis.
−
When the SOURCE switch is set to EXT position, the oscilloscope operates in the
EXT HOR [23] (external sweep) mode.
X-Y Operation
The X-Y operation is with CH1 as X-axis and CH2 as Y-axis. The bandwidth of the
X-axis becomes DC to 1 MHz (-3 dB) (or DC to 2 MHz for OD-515B and OD-545B) and the
Horizontal POSITION control [34] is directly used as the X-axis POSITION control. For the
Y-axis, both vertical POSITION controls [37] and [40] can be used as vertical POSITION
control if the VERT MODE switch [39] is properly set.
NOTE: When high frequency signals are displayed in the X-Y operation, pay
attention to the frequency bandwidths and phase differences between X and Y
axis.
EXT HOR Operation
The external signal applied through the EXT HOR terminal [23] drives the X-axis.
The Y-axis is with any channels as selected by the VERT MODE switch [39]. When DUAL
mode is selected, both CH1 and CH2 signals are displayed in the CHOP mode.
Figure 9.-
November 2000
Figure 10.-
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