7Tutorial
328 Keysight 34970A/34972A User’s Guide
Sources of Error in RF Switching
Impedance mismatching can cause a variety of errors in an RF multiplexing
system. These errors can cause distorted waveforms, overvoltage, or
undervoltage conditions.
To minimize RF impedance mismatching:
– Use the correct cable and connector for the circuit impedance (50Ω or 75Ω).
Note that it is difficult to visually differentiate a 50Ω connector from a 75Ω
connector.
– Be sure that all leads and signal paths are properly terminated. Unterminated
sections of line can appear as near shorts at RF frequencies. Note that the
34905A and 34906A do not automatically terminate open channels.
Insertion Loss (75Ω)
Insertion Loss (50Ω)
VSWR (50Ω)
VSWR (75Ω)
Direct to Module
Using provided adapter cables
To Next Page
Loading...
