TM 55-1930-209-14&P-1
8-9.2 Normal operating procedures
NOTE
When EMS starts operating, each of eight display pages shows on video monitor
for about 9 seconds and then EMS automatically moves to next display page. This
automatic scanning continues until a keyboard display page key is pressed or EMS
activates alarms. If EMS detects an abnormal condition, video monitor stops
scanning display pages, shows ALARM SUMMARY display page and EMS
activates alarms.
a.
If EMS activates alarms, acknowledge alarms by following procedures in paragraph 8-9.3
b.
For continuous viewing of one display page rather than the 9 second viewing per display page shown on
automatic scanning, press keyboard key for desired display page.
NOTE
Selected display page remains on video monitor for 2 or 3 minutes before
automatic scanning starts again.
c.
While viewing display page, make sure time and date displayed on screen are correct. If not correct,
reset according to procedures in paragraph 8-9.4.2.5
d.
If more time is needed to view selected display page, press PAGE LOCK keyboard key. Make sure
PAGE LOCK key turns blue.
e.
To unlock DISPLAY PAGE, press another display page key or press PAGE LOCK key. Make sure PAGE
LOCK key blue light goes out.
NOTE
If PAGE LOCK key is pressed, automatic scanning will begin immediately. If
DISPLAY PAGE key is pressed, automatic scanning will begin 2 to 3 minutes after
key is pressed.
8-9.3 Alarm acknowledgment. Anytime a sensor detects a value outside acceptable limits (abnormal situation), EMS
activates alarms indicating this requires immediate operator attention.
8-9.3.1 Abnormal conditions are indicated in four ways:
a.
Horn and flashing strobe light are activated in ROWPU space and on mast on deckhouse top, buzzer
sounds in dayroom, and alarm sounds on keyboard.
b.
Video monitor automatically switches to ALARMS SUMMARY display page, which displays all conditions
causing alarms. Listing starts with condition most recently causing alarm. This condition is shown in
bright (double intensity), flashing characters.
c.
Keyboard key corresponding to display page where alarm point is located flashes red.
d.
Bar or block display of the alarmed point on display page corresponding to red flashing key shows alarm
condition in bright (double intensity), flashing characters. However, this is not immediately noticeable
until flashing red key is pressed.
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