Offset Accuracy Test - Agilent Technologies Infiniium 90000 A Service Manual

Offset Accuracy Test

C A U T I O N
Ensure that the input voltage to the oscilloscope never exceeds ±5 V.
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.
Specifications
Offset Accuracy
Equipment Required
Description
Digital Multimeter
Cable Assembly
(2 required)
Adapter
Adapter
The offset accuracy specification has two terms ±(offset gain + zero error). The offset gain
specification is ±2% of channel offset and the zero error specification is ±1% of full scale. The
offset accuracy test procedure tests each of these terms individually.
Procedure
Disconnect all cables from the scope channel inputs.
Zero Error Test 1
Press Default Setup, then configure the scope as follows:
2
a Pull down the Setup menu and select Acquisition.
≤ 3.5 V: ±(2% of channel offset + 1% of full scale + 1 mV)
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.
Critical Specifications
DC voltage measurement accuracy better than ±0.1% of reading
50Ω characteristic impedance, BNC (m) connectors
BNC Tee (m)(f)(f)
BNC (f) to dual banana
Chapter 3: Testing Performance

Offset Accuracy Test

Recommended
Model/
Part Numbers
Agilent 34401A or
Agilent 3458A
Agilent 8120-1840
Agilent 1250-0781
Agilent 1251-2277
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