Manualsbrain.com
  1. Manuals
  2. Brands
  3. Tektronix
  4. 1780-R
  5. User Manual

Tektronix 1780-R User Manual

Download
Page of 188
Measurements
4–16
1780R-Series Operator’s Manual
Noise Measurement
Enter Noise Measurement Mode
Push the MEASURE button to enable the Measurement menu,
shown in Figure 4–1.
Touch <NOISE> on the screen.
Exit Noise Measurement Mode
To exit Noise mode, push the MEASURE button again. All
instrument settings return to their previous state.
Noise Measurement Procedure
Input the signal to be measured to the 1780R-Series and display on
screen.
Noise can best be evaluated on a constant-luminance portion of the
signal, such as back and front porch, sync tip, or color bars’ white
bar.
Adjust the large knob so that the gap between the waveforms just
disappears. VAR GAIN is automatically set to maximum for lowest
internal noise; Waveform X5 Gain can be selected for better
accuracy with low noise.
Read the signal / noise ratio directly from the on-screen readout.
Measurements
4–16
1780R-Series Operator’s Manual
Noise Measurement
Enter Noise Measurement Mode
Push the MEASURE button to enable the Measurement menu,
shown in Figure 4–1.
Touch <NOISE> on the screen.
Exit Noise Measurement Mode
To exit Noise mode, push the MEASURE button again. All
instrument settings return to their previous state.
Noise Measurement Procedure
Input the signal to be measured to the 1780R-Series and display on
screen.
Noise can best be evaluated on a constant-luminance portion of the
signal, such as back and front porch, sync tip, or color bars’ white
bar.
Adjust the large knob so that the gap between the waveforms just
disappears. VAR GAIN is automatically set to maximum for lowest
internal noise; Waveform X5 Gain can be selected for better
accuracy with low noise.
Read the signal / noise ratio directly from the on-screen readout.