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10
VIDEO MONITOR DISPLAY
Although the video display is not part of the system keyboard, it
is part of the user interface and works at times in conjunction
with the keyboard. The display contains a text overlay with two
rows of 24 characters each. There are a total of 235 different
characters that can be displayed. Refer to the Character ROM
Table section for detailed information on the characters.
Note that if a video signal is not present, a third line will appear
stating: **VIDEO NOT PRESENT**.
The display is broken down into five areas as shown in the figure
below:
10.2 Monitor Title/System Status Display
The monitor title/system status display area is a 12 column
display to the right of the camera number. It is unique on each of
the monitors. It has different uses, some of which may be selected
by the user at a keyboard location. The various uses are described
below.
Format of Monitor Overlay's
System Status Display
1
2
3
4
5
A
A
A
M
C
l
l
l
o
a
a
a
a
n
m
r
r
r
m
m
m
A
A
r
r
/
m
m
D
I
R
Monitor Overlay Display
6
7
8
9
10
11 12
E
R
M A
S
S
r
e
o
b
e
e
r
m
n
s
q
q
o
/
r
L
L
R
N
N
o
o
e
u
u
t
c
c
l
m
m
a
k
k
t
10.1 Time / Date
The time/date display is generated by the system CPU
microprocessor module. It is crystal controlled and battery
protected for one year minimum without power. The display is
updated once per second and all monitors update simultaneously.
The time/date message is always on the right side of the video
display with the time on the top line. The time always displays
hours, minutes, and seconds, and can be set to either 12 hour or
24 hour operation. The date is available in three user selectable
formats, as indicated below:
1. U.S. Format - The order for the American date display is:
MM/DD/YY.
2. International Format - The order for the international date
display is: DD/MM/YY.
3. Asian Format - The order for the Asian date display is:
YY/MM/DD.
10.2.1 System Status Display
If this display is selected (factory default), it allows the Allegiant
system to dynamically inform the user of the system status. The
12 column display is divided into smaller message columns (see
figure below), in which special characters inform the user whether
the switcher is running or stopped, the switcher's direction,
whether a monitor or remote camera is locked, and the alarm
status of the camera and monitor.
10.2.2 Locations 1, 2, and 3 - Alarm Indication
When the monitor overlay is in the Status Display mode,
S
locations 1 through 3 indicate whether a camera on the monitor
e
is in alarm. If the on-screen camera is currently in alarm, an
"ALM" message in a box will flash at this location. A "##" in a
q
box means that some camera other than the on-screen camera is
in alarm. If no cameras are currently in alarm on this monitor,
S
these spaces will be blank. Note that when a monitor has cameras
in alarm, pressing NEXT, RUN, or PREVIOUS on the keyboard
will move you through the alarm sequencer rather than the
regular camera sequencer. The alarm switcher status will be
displayed in location 6 using symbols described.
30
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