GW Instek GSP-930 User Manual - Manual (Page 152)

GSP-930 User Manual
150
Third Order Intermodulation Distortion (TOI)
Description Third order intermodulation distortion
measurement is used to calculate the TOI
products caused by two signals that are close
together in frequency in a non-linear system.
Both the upper and lower third order intercept
points (IP3) are calculated. Markers are placed
at the frequencies of the TOI products and their
respective base signals.
Limits can be placed on the upper and lower
TOI products for limit testing.
Parameters Reference Lower Sets the reference level to
lowest base signal.
Reference Upper Set the reference level to the
highest base signal.
Limit Sets the limit in dBm for
pass/fail testing
Pass/Fail Test Enables/disables pass/fail
testing.
Measurement
items Base Upper Frequency, dBm, dBc.
Base Lower Frequency, dBm, dBc
3 rd Order Lower Frequency, dBm, dBc, limit,
Intercept point
3 rd Order Upper Frequency, dBm, dBc, limit,
Intercept point
Δf Frequency