Agilent Technologies AGILENT U2761A - Manual (Page 50)

32 U2761A User’s Guide
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 2-4 Panel view of the amplitude section