Common Mode Voltage Adjustment

This adjustment applies to the following models:

This process adjusts resistors in the common mode voltage circuit. The common mode voltage circuit is part of the I and Q DAC and are adjusted until a voltage level of .5 V is reached between the I+ and I- as well as the Q+ and Q-. This simple adjustment for the common mode voltage was added that reads ABus Common Mode Voltages in response to changes in I and Q DAC settings to determine the settings that best achieve common mode voltages of 0.5 V.

Required Test Equipment

Test Equipment

Recommended Models

50 W terminator

  • 3 required

909D

Cable, SMB (f) to SMB (f )

8121-2175

100 MHz reference

M9300A

Connections and Setup Procedures

Setup for Common Mode Voltage Adjustment