Specifications
Chapter 3: Testing Performance
Offset Accuracy Test
20
Offset Gain Test Procedure
1 Make the connections to scope channel 1 as shown below.
Connections
2 Set up the DMM to perform DC voltage measurements.
3 Configure the scope to measure V avg on Channel 1 as follows:
a Press [Default Setup].
b Select Setup > Acquisition. When the Acquisition Setup window appears, enable
averaging and set the # of averages to 256.
c Click the V avg measurement icon on the left side of the screen.
d When the Enter Measurement Info window appears, ensure that the V avg function
Notes:
• Where the BNC Tee adapter is used, it is important to connect it directly to the scope channel input
using the BNC (f) to SMA (m) adapter and the connection savers to minimize ground potential
differences and to ensure that the DMM measures the input voltage to the scope channel as accurately
as possible. Differences in ground potential can be a significant source of measurement error,
particularly at high scope sensitivities.
• It also helps to reduce ground potential differences if the scope and DMM are connected to the same
AC supply circuit.
• 256 averages are used in the scope measurements of this section to reduce measurement noise and to
reduce the measurement error due to resolution.
Oscilloscope Channel Input
Cal Out on Oscilloscope Front Panel
BNC (f) to SMA (m) adapter
BNC (f) to SMA (m) adapter
Connection Saver
Connection Saver