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Issue 21
TX500 series technical manual
7.1.3.3 Segment timer
In segment mode the timer value is displayed along with four push button controls. The
segment timer counts independently of the stop watch and remaining count and it is always
active, even if timer mode is never selected.
After each transition the timer automatically starts, counting up each second, and can only
be stopped either manually or when the terminal count of 999:59 is reached.
The
<SEG HOLD>
push button overrides the auto start by preventing the count from being
zeroed at the start of each transition.
The
<RESET>
push button resets the count to zero. If the count is running when this is
pressed, it will reset to zero then continue counting.
7.1.3.4 Remainder timer
In remainder mode the timer value is displayed along with three push button controls, and
counts independently from the stop watch. The segment count is always active,
automatically starting after each transition, counting from the preset value, or zero if none
has been specified. and can be manually started and stopped once counting.
Once active the timer counts down each second and only can only be stopped manually or
when the terminal count of -999:59 is reached.
The time preset is set using the left hand shaft encoder to set the minute (MMM) value, and
the right hand shaft encoder is to set the second (SS) value.
The
<ENTER>
push button only appears if the remaining count has been stopped and a
positive remaining time is visible on the display. Selecting this push button calculates the
duration of the programme remaining from the last transition by performing the calculation
shown. The push button is then removed from the display and the duration is displayed as
the remaining count which is automatically started (the
<COUNT>
push button automatically
toggles from stop to start).
Duration = currently remaining count - (time of day - time of transition).
