MD-300 User’s Manual Page 7
MD-300 User’s Manual Page 7 (Cont’d)
Timer Setup - Setting the Warning and Final Horn Times
The MD-300 Timer can be configured to automatically
sound a warning horn (after which the timer continues to
run), and a final horn, at which time the timer stops. The
timer forces the warning horn time to occur before the final
horn time. When either of the jumping event types is se-
lected, ("Eqst 1" or "Eqst 2"), the timer continues to run even
after the final horn is sounded. Horns available for the MD-
300 Timer include the OE-200 Automatic Horn and score-
boards with built-in horns. More information is provided in
the manuals supplied with the OE-200 Automatic Horn and
the scoreboards.
Whenever a new event type is selected, the MD-300 Timer
automatically sets the warning horn time and final horn
time, along with other parameters, for that event. Because
of this, it is unlikely that you will need to manually set the
horn times very often. However, you can temporarily over-
ride the default settings for the current event type as out-
lined in this section. You can permanently record changes
in horn times for the current event using the "Set.Def" setup
option. See the "Timer Setup - Setting Event Defaults" sec-
tion for more information.
You should set a horn time after you have selected a new
event type – if you are changing the event type at all. To
change either horn time, press the
SETUP
key to enter the
setup mode. As shown in the "MD-300 Setup Options Ta-
ble," two of the setup options available are used to set the
horn times. "Horn" is used to set the final horn time and
"Horn 2" is used to set the warning horn time. Since the
warning horn time is forced to be less than the final horn
time, you should set the final horn time before setting the
warning horn time. The horn time options are near the end
of the setup options list – you may find it quicker to use the
PREV
key to go backwards from the end of the list to reach
the "Horn" or "Horn 2" option rather than scrolling forward
through all the event types and time format options. To
change a horn time, press the
SELECT OPTION
button when
the desired "Horn" or "Horn 2" option is displayed. As soon
as the button is pressed, the current horn time setting is
displayed.
A horn time setting of zero means the horn will not sound.
Otherwise, the time displayed is the elapsed time after
which the horn will sound. When counting up, the horn
time shown is simply the time at which the horn will sound.
However, when counting down, it is a little more compli-
cated. For example, assume the final horn time is set to 90
seconds. When the timer is started, timing starts at 90 sec-
onds and counts down towards zero. When zero time is
reached, the horn sounds and the timer stops. The horn
sounds after 90 seconds have elapsed – not when the dis-
play reads 90 seconds. Similarly, a warning horn time of 60
seconds – when counting down – implies that the warning
horn will sound after 60 seconds have elapsed. In this ex-
ample, 60 seconds have elapsed when the displayed time
has counted down to 30 seconds.
When a horn time is displayed, press the
NEXT
key to in-
crement the horn time value. Press the
PREV
key to decre-
ment the horn time value. For horn times less than 30 sec-
onds, the time increments and decrements one second at a
time. Above 30 seconds, the time increments and decre-
ments in 15 second intervals. When changing the warning
horn time, the warning horn time is forced to be less than
the final horn time. The timer beeps twice if you attempt to
set the warning horn time above the final horn time. Fur-
ther, if the final horn time is set lower than the warning
horn time, the warning horn time is forced to zero (off).
After the desired horn time value has been set, press the
SELECT OPTION
button to "select" the new horn time. "Done"
is displayed for a moment to indicate that your request has
been performed. The display then restores the horn option
you selected and the timer remains in setup mode. If de-
sired, you may continue to use the
NEXT
and
PREV
keys to
select other setup options (setting the warning horn time,
for example). When you are finished making changes, press
the
EXIT SETUP
button to return to normal timing operation.
Note that a new horn time is set only when the
SELECT OP-
TION
button is pressed after changing a horn time. You may
exit setup without changing the horn time by pressing
EXIT
SETUP
before pressing
SELECT OPTION
to set the new horn
time.
Timer Setup - Setting Event Defaults
As covered previously, whenever a new event type is se-
lected, the MD-300 Timer automatically sets the time for-
mat, counting direction, warning horn time and final horn
