Tektronix 222PS, Operator'S Manual

Page: 65 / 232

Channels
222PS Operator Manual
3Ć19
To display a channel you have turned off, repeat the above procedure
until you see the menu on the screen. Then select the type of coupling
you wish to use for the channel signal. The following section describes
how to select the channel coupling.
NOTE
When a channel is off, you can still change its vertical
settings with the POS , VOLTS/DIV , or VAR VOLTS/DIV
controls. First, select the channel. Then make the changes
you wish. The changes take effect when you turn the
channel back on.
Setting Channel Coupling
There are three possible couplings for each channel:
H DC coupling passes all frequencies of the input signal up to the
useful bandwidth of the instrument.
H AC coupling blocks any DC component of the signal and is the
most commonly used.
H Ground coupling disconnects the input signal and grounds the
input for the selected channel.
To select the coupling for a channel, follow these steps.
ĂĂStep 1:ă If the channel is not already selected, select it by pushing
the appropriate channel button ( CH1 or CH2 ) on the front panel.
ĂĂStep 2:ă Press the channel button again to invoke the channel
menu. The screen appears as in Figure 3Ć7.
ĂĂStep 3:ă Press the button next to the menu item representing the
type of coupling you wish to use. For example, press the second
button from the top to select AC coupling.
If the type of coupling you wish already appears boxed, it is
already the selected coupling. Press the CLEAR button to remove
the menu from the display.
Channels
222PS Operator Manual
3Ć19
To display a channel you have turned off, repeat the above procedure
until you see the menu on the screen. Then select the type of coupling
you wish to use for the channel signal. The following section describes
how to select the channel coupling.
NOTE
When a channel is off, you can still change its vertical
settings with the POS , VOLTS/DIV , or VAR VOLTS/DIV
controls. First, select the channel. Then make the changes
you wish. The changes take effect when you turn the
channel back on.
Setting Channel Coupling
There are three possible couplings for each channel:
H DC coupling passes all frequencies of the input signal up to the
useful bandwidth of the instrument.
H AC coupling blocks any DC component of the signal and is the
most commonly used.
H Ground coupling disconnects the input signal and grounds the
input for the selected channel.
To select the coupling for a channel, follow these steps.
ĂĂStep 1:ă If the channel is not already selected, select it by pushing
the appropriate channel button ( CH1 or CH2 ) on the front panel.
ĂĂStep 2:ă Press the channel button again to invoke the channel
menu. The screen appears as in Figure 3Ć7.
ĂĂStep 3:ă Press the button next to the menu item representing the
type of coupling you wish to use. For example, press the second
button from the top to select AC coupling.
If the type of coupling you wish already appears boxed, it is
already the selected coupling. Press the CLEAR button to remove
the menu from the display.