Specifications

Chapter 3: Testing Performance

Offset Accuracy Test

Offset Gain Test

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 Change the vertical scale of channel 1 to 10 mV/div.

d Click the V avg measurement icon on the left side of the screen.

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 low voltage per division settings.

• 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.

Cal Out on Oscilloscope Front Panel

Oscilloscope Channel Input

BNC (f) to SMA (m) adapter

Connection Saver