Agilent Technologies Agilent 33500 Series, Руководство пользователя

Страница: 98 / 278

97
Chapter 3 Features and Functions
Output Configuration
3
• You can set the output amplitude in Vpp, Vrms, or dBm. For more
information, see “Output Units” on page 100.
• You cannot specify the output amplitude in dBm if the output
termination is currently set to “high impedance”. The units are
automatically converted to Vpp.
For more information, see “Output
Units” on page 100.
• Arbitrary Waveform Limitations : For arbitrary waveforms, the
maximum 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 amplitude is limited
to 6.087 Vpp (into 50 ohms).
• While changing amplitude, you may notice a momentary disruption
in the output waveform at certain voltages due to switching of the
output attenuators. To prevent this disruption in the output, you can
disable the voltage autoranging feature as described on page 105.
• You can also set the amplitude and offset voltage 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 a DC signal, the output level is actually controlled by setting the
offset voltage. You can set the DC level to any value between -5 V and
+5 V with a 50
 load or -10 to +10 VDC with a high-impedance load.
See “DC Offset Voltage” on the following page for more information.
• To select a DC signal from the front panel, press , then
More
and
DC
. Enter the
Offset
with the knob or keypad, and if you use
the keypad, press
mV
or
V
to finish entering the value. Then press
or or and make sure the
Output
softkey is
ON.
• Front-Panel Operation : To set the output amplitude, press and
then the
Amplitude
softkey for the selected function. Then use the
knob or numeric keypad to enter the desired amplitude. To set the
amplitude using a high level and low level, press
and then
press the
Amp/Offs
softkey to toggle it to
High/Low
.