Chapter 4: Testing Performance
DC Gain Accuracy Test
48
DC Gain Accuracy Test
CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V.
Specifications
Equipment Required
Let the oscilloscope warm up before testing
The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least
30 minutes prior to the start of any performance test.
DC Gain Accuracy ±2% of full scale at full resolution channel scale
Full scale is defined as 8 vertical divisions. Magnification is used below 5 mV/div. Below 5 mV
full scale is defined as 40 mV. The major scale settings are 5 mV, 10 mV, 20 mV,
50 mV, 100 mV, 200 mV, 500 mV and 1 V.
Description Critical Specifications Recommended
Model/
Part Numbers
Digital Multimeter DC voltage measurement accuracy better than ±0.1% of reading Agilent 34401A or
Agilent 3458A
Cable Assembly
(2 required)
50Ω characteristic impedance, BNC (m) connectors Agilent 8120-1840
Adapter BNC Tee (m)(f)(f) Agilent 1250-0781
Adapter BNC (f) to dual banana Agilent 1251-2277