Specifications

16
Offset Accuracy Test
CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V.
Specifications
Equipment Required
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 > 3.5 V. The offset accuracy test procedure
tests each of these terms individually.
Zero Error Test Procedure
1 Disconnect all cables from the scope channel inputs.
2 Press [Default Setup], then configure the scope as follows:
a Select Setup > Acquisition.
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.
Offset Accuracy ≤ 3.5 V: ±(2% of channel offset + 1% of full scale + 1 mV)
> 3.5 V: ±(2% of channel offset + 1% of full scale)
Full scale is defined as 8 vertical divisions. Magnification is used below 10 mV/div. Below 10
mV/div, full scale is defined as 80 mV. The major scale settings are 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 34411A
Cable Assembly
(2 required)
50 ohm 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
Connector Saver 3.5 mm (f)-(f), shipped with each 90000 Q-Series oscilloscope
2.4 mm (f) to 3.5 mm (f) adapter
Agilent 5061-5311 (used
with 20, 25, and 32 GHz
oscilloscope models)
Agilent 11901B (used
with 50 GHz and 62 GHz
oscilloscope models)
Adapter
(2 required)
BNC (f) to SMA (m) Adapter Agilent 1250-1200