1.3 System
peripherals
To carry out a totally automatic timing operation it is
necessary to connect a start system and a device to detect
arrivals. Any device having a volt free normally open or
normally closed contact, can be used (for example start gates,
start transducer, photocells, contact strips etc.)
For initial familiarisation with the device, or where high
precision timing is not absolutely essential, the
button
allows direct entry of start and arrival impulses directly from
the keyboard.
1.4
Keyboard: Use of the keys
Paper Advance
key
START/STOP
key: switches on the device and
allows manual recording of starts and finishes.
Correction
key: this replaces the timekeepers
pencil and allows the modification of times.
Any correction is printed (change of competitor
number, erasing a time, manual entry of a
time).
ON/OFF
key: renders active/inactive (arming)
the external channel shown by the cursor
.
Cursor
keys: allow movement through the
menus.
ESC
key: cancels a modification or exits a
menu.
1.5
Switching the device on
Press and hold down the
button until the end of the
operation, during this time press the
button briefly.
1.6
Switching the device off
Return to the main menu by pressing
; then go to the
Off
selection and press the
key.
1.7
Navigating through the menus
The actual selection is shown on the screen by means of the
character
.
Use the cursor keys
(
and
) to make a selection and the key
to confirm. If a menu choice is no longer shown on
the screen, the vertical arrows (
or
) on the top or bottom
of the screen indicate that the screen display may be scrolled
by the cursor keys.
2 Technical
Specification
Data storage:
even when switched off, the
saves all data. For this, it uses a capacitor mounted on the
main circuit board. This guarantees that no information is lost
when changing the main batteries.
Memory
: the
depending on the program that
is installed, allows several hundred times and heats to be
stored, with a maximum of 2000 results.
Distribution of information:
the serial output allows results
to be transmitted to a scoreboard or PC either during, or after,
races.
3 General
Functions
Note:
Some
programs, not developed by
Swiss Timing Ltd, may use different menus.
3.1
Type of contacts
A contact is defined by the change of state of an electric
switch.
Take the case of a simple push button to explain this concept.
To record an arrival signal, press the button then release it.
Depending on the type of push button we have the two
following possibilities:
Normally closed (NC):
1
0
Normally open (NO):
1
0
Press
Release
Normally Open
Normally Closed
It is a fundamental feature of the device that the type of
contact must be correctly interpreted: in other words will the
timing pulse be recorded when the signal changes from 0 to 1
or from 1 to 0?
With regard to above diagram, it is easy to understand that if
we configure the contacts incorrectly we will falsify the results
by several tenths of a second. In this case the device will
interpret the arrival time as the moment that the judge
releases – rather than presses – the push button.
How to configure a contact:
Settings
Contact
Start/Stop
NO/NC
Where Start/Stop is the input you wish to configure and
NO/NC defines whether the contact will be normally open or
normally closed.
- 4 -
- 5 -
- 6 -
