HP 33120A, User Manual

Page: 17 / 118

To output a dc voltage
In addition to generating waveforms, you can also output a dc voltage in
the range
±
5 Vdc (into a 50
Ω
termination). The following steps show
you how to 155 mVdc.
1 Press the key and hold it down for more than 2 seconds .
To enter the dc voltage mode, press the
Offset
key or any key in the
top row of function keys and
hold it down for more than 2 seconds
.
The displayed voltage is either the power-on value or the previous
offset voltage selected.
DCV
+0.000 VDC
2 Enter the magnitude of the desired voltage.
1
Notice that the
Num
annunciator turns on and “
ENTER NUM
” flashes on
the display, indicating that the number mode is enabled.
155
To cancel the number mode, press
Shift Cancel
.
3 Set the units to the desired value.
At this point, the function generator outputs the displayed dc voltage.
Notice that the
Offset
annunciator turns on (all other annunciators
are off), indicating that a dc voltage is being output. The annunciator
will turn on when the offset is any value other than 0 volts.
+155.0 mVDC
Offset
Enter Number
5 1 5
kHz
m Vrms
Shift
∨
1
You can also use the knob and arrow keys to enter a number.
See “Front-Panel Number Entry” on page 3 for more information.
Chapter 1 Quick Start
To output a dc voltage
24