Getting Started 1
Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide 39
 
16. Vertical 
controls
The Vertical controls consist of:
• Analog channel on/off keys — Use these keys to switch a channel on 
or off, or to access a channel's menu in the softkeys. There is one 
channel on/off key for each analog channel.
• Vertical scale knob — There are knobs marked   for each 
channel. Use these knobs to change the vertical sensitivity (gain) of 
each analog channel.
• Vertical position knobs — Use these knobs to change a channel's 
vertical position on the display. There is one Vertical Position control 
for each analog channel.
•[Label] key — Press this key to access the Label Menu, which lets 
you enter labels to identify each trace on the oscilloscope display. See 
Chapter 9, “Labels,” starting on page 135.
For more information, see Chapter 3, “Vertical Controls,” starting on 
page 61.
17. Analog channel 
inputs
Attach oscilloscope probes or BNC cables to these BNC connectors.
With the InfiniiVision 3000 X-Series oscilloscopes, you can set the input 
impedance of the analog channels to either 50
Ω or 1 MΩ. See “To 
specify channel input impedance" on page 64.
The InfiniiVision 3000 X-Series oscilloscopes also provide the AutoProbe 
interface. The AutoProbe interface uses a series of contacts directly 
below the channel's BNC connector to transfer information between the 
oscilloscope and the probe. When you connect a compatible probe to the 
oscilloscope, the AutoProbe interface determines the type of probe and 
sets the oscilloscope's parameters (units, offset, attenuation, coupling, 
and impedance) accordingly.
18. Demo 2, 
Ground, and 
Demo 1 
terminals
• Demo 2 terminal — This terminal outputs the Probe Comp signal 
which helps you match a probe's input capacitance to the 
oscilloscope channel to which it is connected. See “Compensate 
Passive Probes" on page 32. With certain licensed features, the 
oscilloscope can also output demo or training signals on this terminal.
• Ground terminal — Use the ground terminal for oscilloscope probes 
connected to the Demo 1 or Demo 2 terminals.
• Demo 1 terminal — With certain licensed features, the oscilloscope 
can output demo or training signals on this terminal.