Offset Accuracy Test - Keysight Infiniium S Series Service Manual

3
Testing Performance

Offset Accuracy Test

Ensure that the input voltage to the oscilloscope never exceeds
t
CAUTION
The oscilloscope must be warmed up (with the oscilloscope application running) for at least
N OTE
30 minutes at ambient temperature prior to the start of any performance test.
Specifications
Offset Accuracy
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 MΩ 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
Digital Multimeter
Cable Assembly
(2 required)
DC Power Supply
Adapter
Adapters (2)
Procedure
1
2
24
± 0.1div ± 2 mV ±1.0% of offset setting for offsets < 2V
± 0.1div ± 2 mV ±1.5% of offset setting for offsets ≥ 2V
Critical specifications
DC voltage measurement accuracy better than ±0.1%
of reading
50 Ω characteristic impedance, BNC (m) connectors
40 V
BNC Tee (m)(f)(f)
BNC (f) to dual banana
Disconnect all cables from the oscilloscope channel inputs.
Click Control > Factory Default. The input impedance for channel 1 should be
50
Ω.
5 V.
±
Recommended model
or part number
34411A or 3458A
8120-1840
6614C
1250-0781
1251-2277
S-Series Oscilloscopes Service Guide