55
Chapter 3 Features and Functions
Output Configuration
3
• Arbitrary Waveform Limitations: For arbitrary waveforms, the
maximum
offset and amplitude will be limited if the waveform data
points do not
span the
full range of the output DAC (Digital-to-Analog
Converter).
For example, the built-in “Sinc” waveform does not use
the full range of values between ±1 and therefore its maximum offset
is limited to 4.95 volts (into 50 ohms).
• You can also set the offset by specifying a high level and low level.
For example, if you set the high level to +2 volts and the low level to
-3 volts, the resulting amplitude is 5 Vpp (with an offset voltage of
-500 mV).
• For dc volts, the output level is actually controlled by setting the
offset voltage. You can set the dc level to any value between ±5 Vdc
into 50 ohms or ±10 Vdc into an open circuit.
To select dc volts from the front panel, press and then select the
DC On softkey. Press the Offset softkey to set the desired offset
voltage level.
• Front-Panel Operation:
To set the dc offset, press the
Offset
softkey
for the selected function. Then use the knob or numeric keypad to
enter the desired offset. To set the offset using a high level and low
level, press the Offset softkey again to toggle to the HiLevel and
LoLevel softkeys.
• Remote Interface Operation:
VOLTage:OFFSet {<offset>|MINimum|MAXimum}
Or, you can set the offset by specifying a high level and low level
using the following commands.
VOLTage:HIGH {<voltage>|MINimum|MAXimum}
VOLTage:LOW {<voltage>|MINimum|MAXimum}
You can also use the
APPLy
command to select the function, frequency
,
amplitude, and offset with a single command.
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