Measuring Input/Output Voltage Ripple - Analog Devices DC336 Quick Start Manual

4. When measuring the input / output voltage ripple, care must be taken to avoid a long ground
return for the oscilloscope probe. After removing the grabber and outer plastic sleeve from the
scope probe, measure the input voltage ripple by touching the probe between V
and measure the output voltage ripple by touching the probe between V
shown in Figure 2.
VIN
GND
TEKTRONIX
TDS 640A
OSCILLOSCOPE
PROBE
MEASURING
V RIPPLE
IN
Figure 2. Proper Noise Measurement Technique
OUT
VOUT
GND
MEASURING
V RIPPLE
OUT
and GND
IN
and GND as