Extron Electronics DDS 100 - Manual (Page 20)

Operation, cont’d
DDS 100 Operation 3-2
The front panel includes an LCD menu screen that displays the current
status of the DDS 100 and the scan rate of the current video input signal.
You can also use it to control the image display.
Navigating the Default Cycle Screens
The figure below shows the flow chart for the DDS 100’s LCD default
cycle. Each rectangular box represents an LCD screen. Dashed lines
indicate a screen that can be replaced temporarily by another screen.
1 Entry point into the flow chart from
power up.
2 Path into the model identification
screen.
3 Model identification screen, which is
displayed for four seconds.
4 Three possible paths from the model
identification screen:
1. If no button is pressed, the path is
through black box N (no button).
2. If the Freeze button is pressed, the
path is through F (see F on
the next page).
3. If the Menu button is pressed, the
path is through M (see M on
the next page).
5 Horizontal/vertical frequency screen,
which is displayed for four seconds,
shows the horizontal and vertical
scan rates of the input signal.
6 Three possible paths from the
horizontal/vertical frequency screen:
1. If no button is pressed, the path is
through black box N (no button).
2. If the Freeze button is pressed, the
path is through F (see F on
the next page).
3. If the Menu button is pressed, the
path is through M (see M on
the next page).
7 Input scan rate out of range decision
box:
N = No. Loops back to the model
identification screen (
2 , 3 ).
Y = Yes. Goes to the signal out of
range screen (
8
).
8 Signal out of range screen, which is displayed for four seconds.
9 Horizontal/vertical frequency of the out-of-range signal, which is
displayed for four seconds and then loops back to
7
.
10 Entry into path F . The Freeze button was pressed, or the RS-232
freeze command was issued.
11 Image frozen/controls locked screen.
Operation
Enter or exit executive
mode by pressing the
cursor Up and Down
buttons at the same
time, or by sending an
RS-232 command. The
applicable executive
mode screen appears
for four seconds, and
then the default cycle
resumes.