Agilent Technologies U2761A manual Limits Due to Units Selection, Soft Front Panel Operation

2 Features and Functions

Limits Due to Units Selection

In some cases, the amplitude limits are determined by the output units selected. This may occur when the units are Vrms or dBm due to the differences in crest factor for the various output functions.

For example, if you output a 2.5 Vrms Square wave (into 50 Ω) and then change to the Sine wave function, the U2761A will automatically adjusts the output amplitude to 1.768 Vrms (the upper limit for Sine wave in Vrms).

You can set the output amplitude in Vpp, Vrms, or dBm. For more information, see “Output Units” on page 35.

You cannot specify the output amplitude in dBm if the output termination is set to “high impedance”.

Soft Front Panel Operation

On the Amplitude panel as shown in Figure 2- 4, input the desired amplitude value and select the unit from the drop down list.

Figure 2-4Panel view of the amplitude section

32 U2761A User’s Guide