Testing Performance 3
S-Series Oscilloscopes Service Guide 31
DC Gain Accuracy Test
t
Ensure that the input voltage to the oscilloscope never exceeds ±5 V.
The oscilloscope must be warmed up (with the oscilloscope application running) for at least
30 minutes at ambient temperature prior to the start of any performance test.
Specifications
DC Gain Accuracy ±2% of full scale at full resolution channel scale (±5
o
C from calibration
temperature)
50
Ω Input Impedance: Full scale is defined as 8 vertical divisions. Magnification is used below
2 mV/div. Below 2 mV full scale is defined as 16 mV. The major scale settings are 5 mV, 10 mV,
20 mV, 50 mV, 100 mV, 200 mV, 500 mV and 1 V.
1 M
Ω Input Impedance: Full scale is defined as 8 vertical divisions. The major scale settings are
5 mV, 10 mV, 20 mV, 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V, and 5 V.
Equipment Required
Description Critical specifications Recommended model
or part number
Digital Multimeter DC voltage measurement accuracy better than ±0.1%
of reading
34411A or 3458A
Cable Assembly
(2 required)
50 Ω characteristic impedance, BNC (m) connectors 8120-1840
DC Power Supply 40 V 6614C
Adapter BNC Tee (m)(f)(f) 1250-0781
2 Adapters 2 BNC (f) to dual banana 1251-2277
To Next Page
Loading...
Need help?
General
