Replacing Assemblies 5
S-Series Oscilloscopes Service Guide 91
Setting the Calibration Factors after Replacing the Acquisition Board
After you replace the acquisition board you must run a service calibration on the
oscilloscope. This procedure needs to be performed only once after the acquisition
board is replaced.
1 Perform self tests as described on page 19.
2 Allow the oscilloscope to warm up for 30 minutes.
3 Perform a service calibration.
The oscilloscope must be warmed up (with the oscilloscope application running) for at least
30 minutes at ambient temperature before starting the calibration procedure. Failure to allow
warm up may result in inaccurate calibration.
Equipment Required
Description Critical specifications Recommended
model/part number
Digital Multimeter No substitute 34411A
10 MHz Signal Source
(required for time
scale calibration)
Frequency accuracy better than 0.1 ppm 53131A with Opt. 010
Cable Assembly No substitute 54855-61620
USB Cable 34398A
Cable Assembly 50 Ω characteristic impedance BNC (m) connectors
~ 36 inches (91 cm) to 48 inches (122 cm) long
8120-1840
Adapter BNC Barrel (f)(f) 1250-0080
Adapter (Qty. 2) No substitute 54855-67604
Adapter BNC (f) to dual banana 1251-2277
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