Third Order Intermodulation Distortion (Toi) - Promax AE-166 User Manual

Pre-Set Test Parameters: 802.XX
►
For details on 802.11x and 802.16 SEM test parameters, please see the SEM
overview.
Press Setup[F1]> and choose a 802.XX test:
802.11b[F2]
802.11g[F3]
802.11n[F4]
802.16[F5]
Press Ref. Channel[F2] to view the predefined settings for channel
integrated bandwidth, channel span, RBW and PSD ref.
Press Offset/Limit[F3] to view the parameter values of each of the
offsets, including Start and Stop Frequency, RBW, Rel Start and Stop.
4.1.12

Third Order Intermodulation Distortion (TOI)

Description
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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
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
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
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
Base Upper: Frequency, dBm, dBc

Base Lower: Frequency, dBm, dBc

3rd Order Lower: Frequency, dBm, dBc, limit, Intercept point

3rd Order Upper: Frequency, dBm, dBc, limit, Intercept point

Δf: Frequency
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February 2017