Quantum Data 801GC - Manual (Page 25)

2-5
Knobs
The format knob is normally used to select a signal
format. A format is a set of parameters that specify
the video and sync signal requirements of a par-
ticular display. Format parameters include timing,
sync type, video type, display size, etc. By turning
the knob, you can scroll through a list of formats
stored in non-volatile memory. The list includes many
factory default formats. You can edit the list as well
as add formats that you create. A new format is
loaded with each click of the knob. Loading a for-
mat redraws the current test image and updates the
LCD. If you select a format containing erroneous
information, the outputs of the generator are auto-
matically turned off and an error message is dis-
played. The knob performs other functions when
the editors are being used.
The format knob performs other functions when the
801G* is operated in the either the test sequence or
GUI programming modes. Please see the “Program-
ming” chapter for detailed information on operat-
ing the 801G* in the other modes.
The image knob is normally used to select a test
image. The exact behavior of the knob depends upon
the status of the “Image” push-button. Turning the
knob when the button is not lit scrolls through the
main list of test images. The knob performs other
functions when the editors are being used.
❖ Not all images are supported by all signal for-
mats. Some images in the main image list may
be skipped while certain formats are present. For
example, the ColorBar image will be skipped
whenever a monochrome format is present. If
the currently selected image cannot be drawn
given a newly selected format, the Outline im-
age is automatically drawn after the new format
has finished loading.
D i s p l a y s , I n d i c a t o r s & K n o b s
Format Knob in
Normal Mode
Format Knob in
Other Modes
Image Knob in
Normal Mode