Keysight Technologies EDU33210 Serie Guia Del Usuario página 83

– Units selection applies to front panel and remote interface operations. For example, if you select "VRMS"
remotely, the units are displayed as "VRMS" on the front panel.
– Amplitude units cannot be dBm if output termination set to high impedance. Calculating dBm requires finite load
impedance. In this case, units are converted to Vpp.
– You can convert between units. For example, to convert 2 Vpp to Vrms equivalent:
Press [Units] > Amplitude
The converted value is 707.1 mVrms for a sinewave.
Front Panel Operations
Press [Units] > Amplitude .
SCPI Command
[SOURce[1|2]:]VOLTage:UNIT {VPP|VRMS|DBM}
Output Termination
The instrument has a fixed series output impedance of 50 Ω to the front panel channel connectors. If the actual load
impedance differs from the value specified, the displayed amplitude and offset levels will be incorrect. The load
impedance setting is simply a convenience to ensure that the displayed voltage matches the expected load.
– Output termination: 1 Ω to 10 kΩ, or infinite. The default is 50 Ω.
– If you specify a 50 Ω termination but actually terminate into an open circuit, the output will be twice the value
specified. For example, if you set the DC offset to 100 mVDC(and specify a 50 Ω load) but terminate into an open
circuit, the actual offset will be 200 mVDC.
– Changing output termination setting, adjusts displayed output amplitude and offset (no error is generated). If the
amplitude is 10 Vpp and you change the output termination setting from 50 Ω to "high impedance" (OUTPut
Keysight EDU33210 Series User's Guide
Vpp > Amplitude Vrms
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