Technical data

166 Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
11 Calibration Commands
To achieve the specified accuracy (±2%) with a probe connected to a
channel, make sure the oscilloscope is calibrated.
• For probes that the oscilloscope can identify through the probe
power connector, like the 1158A, the oscilloscope automatically
adjusts the vertical scale factors for that channel even if a probe
calibration is not performed.
• For nonidentified probes, the oscilloscope adjusts the vertical scale
factors only if a probe calibration is performed.
• If you do not perform a probe calibration but want to use an
unidentified probe, enter the attenuation factor in the "Setup - >
Channel - > Probes - > Configure Probing System - > User Defined Probe"
menu.
• If the probe being calibrated has an attenuation factor that allows
the oscilloscope to adjust the gain (in hardware) to produce even
steps in the vertical scale factors, the oscilloscope will do so.
• If the probe being calibrated has an unusual attenuation, like 3.75,
the oscilloscope may have to adjust the vertical scale factors to an
unusual number, like 3.75 V/div.
Typically, probes have standard attenuation factors such as divide by
10, divide by 20, or divide by 100.