Agilent Technologies Agilent 33500 Series Operating And Service Manual page 323

VOLTage Subsystem Introduction
Arbitrary Waveform Limitations: For arbitrary waveforms, amplitude is limited if the waveform data points do not
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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, so its maximum amplitude is limited to 6.087 Vpp (into 50 Ω).
Changing amplitude may briefly disrupt output at certain voltages due to output attenuator switching. The ampli-
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tude is controlled, however, so the output voltage will never exceed the current setting while switching ranges. To
prevent this disruption, disable voltage autoranging using
matically enables autoranging.
You can also set the amplitude (with an associated offset voltage) by specifying a high level (VOLTage:HIGH) and
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low level (VOLTage:LOW). For example, if you set the high level to +2 V and the low level to -3 V, the resulting
amplitude is 5 Vpp, with a -500 mV offset.
To output a DC voltage level, select the DC voltage function
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age:OFFSet). Valid values are between ±5 VDC into 50 Ω or ±10 VDC into an open circuit. While the instrument is
in DC mode, setting amplitude has no effect.
[SOURce[1|2]:]VOLTage:COUPle[:STATe] {ON|1|OFF|0}
[SOURce[1|2]:]VOLTage:COUPle[:STATe]?
Enables or disables the maintaining of the same amplitude, offset, range, load, and units on both channels of a two-
channel instrument. The command applies to both channels; the SOURce keyword is ignored.
Parameter
{ON|1|OFF|0}, default OFF
Enable voltage coupling:
VOLT:COUP ON
[SOURce[1|2]:]VOLTage:HIGH {< voltage >|MINimum|MAXimum}
[SOURce[1|2]:]VOLTage:HIGH? [{MINimum|MAXimum}]
[SOURce[1|2]:]VOLTage:LOW {< voltage >|MINimum|MAXimum}
[SOURce[1|2]:]VOLTage:LOW? [{MINimum|MAXimum}]
Set the waveform's high and low voltage levels.
±5 VDC into 50 Ω, as long as HIGH is at least 1 mV greater than LOW. Defaults:
HIGH +50 mV, LOW -50 mV.
Set high voltage level to 4 V:
VOLT:HIGH 4
Limits Due to Amplitude: You can set the voltage levels to a positive or negative value with the restrictions shown
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below. Vpp is the maximum peak-to-peak amplitude for the selected output termination (10 Vpp into 50 Ω or 20
Vpp into an open circuit).
≤ Vpp (max) and V
V – V
high low
322
Typical Return
0 (OFF) or 1 (ON)
Parameter
≤ Vpp (max)/2
, V
high low
VOLTage:RANGe:AUTO OFF. The
(FUNCtion DC) and then set the offset voltage
Agilent 33500 Series Operating and Service Guide
APPLy command auto-
(VOLT-
Typical Return
+4.000000000000000E+00