Tektronix 1780-R User Manual

Page of 188
1780R-Series Operator’s Manual
2–1
Connectors, Controls, Indicators
This section provides an overview of control and connector
functions. To locate more detailed information, please refer to the
manual index or table of contents.
Switches
Push and release the front-panel switches to toggle between
selections. Push and hold to access outlined selections.
Companion Switches
Some switch functions are paired or grouped so that two or three
switches determine one display. These are referred to in this manual
as companion switches.
Pushing the same companion switch twice in succession will change
its selection (as indicated by the LED).
Pushing first one companion switch and then another will cause the
display to alternate between the first switch selection and the second
switch selection. Held functions will be forced to the top function of
the switch. For example, VECT and SCH together reverts to VECT.
Controls
All front-panel controls are continuous except the Horizontal
Position control, which has stops. It also has a spring return which
returns it to the center position. The further from center the control is
turned, the faster the display moves. This is useful in MAG
operation.
The five CRT controls (Focus, Scale, Intens, VPOS, and HPOS) are
used to adjust both CRTs. Refer to CRT Controls for details.
LEDs
Green LEDs indicate front-panel switch selections. Some LEDs are
located next to the function label, and some are located in the switch
itself.
Red LEDs indicate an uncalibrated gain condition.
1780R-Series Operator’s Manual
2–1
Connectors, Controls, Indicators
This section provides an overview of control and connector
functions. To locate more detailed information, please refer to the
manual index or table of contents.
Switches
Push and release the front-panel switches to toggle between
selections. Push and hold to access outlined selections.
Companion Switches
Some switch functions are paired or grouped so that two or three
switches determine one display. These are referred to in this manual
as companion switches.
Pushing the same companion switch twice in succession will change
its selection (as indicated by the LED).
Pushing first one companion switch and then another will cause the
display to alternate between the first switch selection and the second
switch selection. Held functions will be forced to the top function of
the switch. For example, VECT and SCH together reverts to VECT.
Controls
All front-panel controls are continuous except the Horizontal
Position control, which has stops. It also has a spring return which
returns it to the center position. The further from center the control is
turned, the faster the display moves. This is useful in MAG
operation.
The five CRT controls (Focus, Scale, Intens, VPOS, and HPOS) are
used to adjust both CRTs. Refer to CRT Controls for details.
LEDs
Green LEDs indicate front-panel switch selections. Some LEDs are
located next to the function label, and some are located in the switch
itself.
Red LEDs indicate an uncalibrated gain condition.