Tektronix Camcorder 1780-R User Manual
Measurements
4–28
1780R-Series Operator’s Manual
Short-Time Distortion Measurement
Enter Short-Time Distortion Mode
Push the MEASURE button to enable the Measurement menu,
shown in Figure 4–1.
shown in Figure 4–1.
Touch <SHORT-TIME DISTORTION> on the screen.
Vectorscope and waveform displays are enabled and the instrument
is now configured as shown in Figure 4–9 and Table 4–7.
is now configured as shown in Figure 4–9 and Table 4–7.
Exit Short-Time Distortion Measurement Mode
To exit the Short-Time Distortion mode, push the MEASURE button
again. All instrument settings return to their previous state.
again. All instrument settings return to their previous state.
Short-Time Distortion Measurement Procedure
Use the Vertical and Horizontal Position controls and the Waveform
VAR gain to position the signal as follows: The signal baseline goes
through the graticule “+” at the lower left of the CRT, the rising edge
goes through the “+” at center screen, and the top of the signal goes
through the “+” in the upper right of the screen. See Figure 4–9.
VAR gain to position the signal as follows: The signal baseline goes
through the graticule “+” at the lower left of the CRT, the rising edge
goes through the “+” at center screen, and the top of the signal goes
through the “+” in the upper right of the screen. See Figure 4–9.
Use the large knob to adjust the electronic graticule to just touch the
signal at the point of greatest error.
signal at the point of greatest error.
Obtain the Short-Time Distortion error from the on-screen readout,
which is given in percent of the overall bar signal amplitude.
which is given in percent of the overall bar signal amplitude.
Measurements
4–28
1780R-Series Operator’s Manual
Short-Time Distortion Measurement
Enter Short-Time Distortion Mode
Push the MEASURE button to enable the Measurement menu,
shown in Figure 4–1.
shown in Figure 4–1.
Touch <SHORT-TIME DISTORTION> on the screen.
Vectorscope and waveform displays are enabled and the instrument
is now configured as shown in Figure 4–9 and Table 4–7.
is now configured as shown in Figure 4–9 and Table 4–7.
Exit Short-Time Distortion Measurement Mode
To exit the Short-Time Distortion mode, push the MEASURE button
again. All instrument settings return to their previous state.
again. All instrument settings return to their previous state.
Short-Time Distortion Measurement Procedure
Use the Vertical and Horizontal Position controls and the Waveform
VAR gain to position the signal as follows: The signal baseline goes
through the graticule “+” at the lower left of the CRT, the rising edge
goes through the “+” at center screen, and the top of the signal goes
through the “+” in the upper right of the screen. See Figure 4–9.
VAR gain to position the signal as follows: The signal baseline goes
through the graticule “+” at the lower left of the CRT, the rising edge
goes through the “+” at center screen, and the top of the signal goes
through the “+” in the upper right of the screen. See Figure 4–9.
Use the large knob to adjust the electronic graticule to just touch the
signal at the point of greatest error.
signal at the point of greatest error.
Obtain the Short-Time Distortion error from the on-screen readout,
which is given in percent of the overall bar signal amplitude.
which is given in percent of the overall bar signal amplitude.