Keysight Technologies Infiniium MSOV 084A, Руководство по обслуживанию

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26 Infiniium V-Series Oscilloscopes Service Guide
3
Testing Performance
Offset Accuracy Test
Specifications
Equipment Required
CAUTION
Ensure that the input voltage to the oscilloscope never exceeds ±5 V.
NOTE
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.
Offset Accuracy ≤ 3.5 V: ±(2% of channel 1% of full scale + 1 mV)
>3.5 V: ±(2% of channel 1% of full scale)
Full scale is defined as 8 vertical divisions. Magnification is used below 7.5 mV/div. Below 7.5
mV/div, full scale is defined as 60 mV. The major scale settings are 1 mV/div, 2 mV/div, 5 mV/div,
10 mV/div, 20 mV/div, 50 mV/div, 100 mV/div, 200 mV/div, 500 mV/div, and 1 V/div.
Equipment Critical specifications Recommended model/part #
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
Adapter BNC Tee (m)(f)(f) 1250-0781
Adapter BNC (f) to dual banana 1251-2277
Connector Savers (5 supplied
with oscilloscope)
3.5 mm (f) - (f) 54919-68717 (for oscilloscope
models
≥
20 GHz)
54916-68716 (for oscilloscope
models
≤
16 GHz)
Adapter
(2 required) BNC (f) to SMA (m) adapter 1250-1200
NOTE
The offset accuracy specification has two terms: ± (offset gain + zero error). The offset gain
specification is ±2% of channel offset, while the zero error specification is ±(1% of full scale +
1mV) for
≤
3.5 V, and 1% of full scale for > 3.5 V. The offset accuracy test procedure tests
each of these terms individually.