146
Chapter 4 Remote Interface Reference
Using the APPLy Command
4
Output Amplitude
• For the amplitude parameter of the APPLy command, the output
amplitude range depends on the function specified and the output
termination. You can substitute “MINimum”, “MAXimum”, or “DEFault”
in place of a specific value for the amplitude parameter. MIN selects
the smallest amplitude (1 mVpp into 50 ohms). MAX
selects the
largest amplitude for the function specified (at most 10 Vpp
into
50 ohms depending on function and offset voltage). The default
amplitude is 100 mVpp (into 50 ohms) for all functions.
• Limits Due to Output Termination: The output amplitude limits are
determined by the current output termination setting (the APPLy
command does not change the termination setting). For example,
if you set the amplitude to 10 Vpp and then change the output
termination from 50 ohms to “high impedance”, the amplitude
displayed on the function generator’s front-panel will double to
20 Vpp (and no error will be generated). If you change from “high
impedance” to 50 ohms, the displayed amplitude will drop in half.
See the OUTP:LOAD command on page 163 for more information.
• You can set the output amplitude in Vpp, Vrms, or dBm by specifying
the units as part of the APPLy command as shown below.
APPL:SIN 5.0E+3, 3.0 VRMS, -2.5
Or, you can use the VOLT:UNIT command (see page 165) to specify
the output units for all commands that follow. Unless you specify
the units as part of the APPLy command, the VOLT:UNIT command
takes precedence. For example, if you select “Vrms” using the
VOLT:UNIT command and do not include units with
the
APPLy
command, the value specified for the
amplitude
parameter
in the
APPLy command will be in “Vrms”.
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