Agilent Technologies 34972A User Manual page 313

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 (50 or
75). Note that it is difficult to visually differentiate a 50 connector
from a 75 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 (50)
VSWR (50)
RF Signal Multiplexing
Insertion Loss (75)
Direct to Module
Using provided adapter cables
VSWR (75)
Chapter 7 Tutorial
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