WARNING
Battery (hours of utilisation) is very much reduced under 0° C and
depends on their quality. We strongly recommend to use new
batteries as soon as LED
➂
flashes.
b)
Lining up the photocell
When you switch on the receiver, the LED "SIGNAL"
➃
illuminates as long as the transmitter is
not lined up with the transmitter.
First set up the transmitter on the receiver by using the sighting groove
➀
.
Then aim the receiver by using the sighting groove
➀
.You are in alignment when LED
➃
"SIGNAL" is switched off and stays so even if you move slightly the photocell.
A luminous indicator placed under the receiving lense allows you to align accurately the
transmitter on the receiver.
Transmitter and receiver must be steadily fixed on supports ref. HL4-3 or on tripods.
When you cut the beam between the transmitter and receiver, the LED "SIGNAL"
➃
comes on.
The impulse is given at the output connections
➆
.
c)
Adjusting length of impulse
➅
➅
➅
➅
Depending on the sport to be timed, it may be necessary to have a period of time in which the
apparatus is blocked between the impulses in order to eliminate interference caused by the
moving body.
Min. adjustment : Duration of impulse 1/100 sec.
Max. adjustment : Duration of impulse 2 sec.
d) Output jacks
➆
➆
➆
➆
Open collector outlet - working contact (short circuit between black and green terminals)
Green terminal :
Impulse
Black terminal :
Ground
e) Changing the batteries
Remove the screw underneath the case. Slide the electronic unit out of the case. Change the 3
batteries observing the polarities marked on the bottom. Be sure to use good quality Alcaline type
1.5 volt batteries (UCAR Energizer E-91 e.g.). Put the electronic unit back in the case and do up
the screw carefully.
IMPORTANT
If timing is interrupted for a long period or when it is finished:
TURN BUTTON
➁
➁
➁
➁
TO OFF POSITION
HL 2-35
➀
Sighting groove
➁
ON/OFF switch
➂
Battery check
➃
Alignment check
➄
External power supply
➅
Impulse length adjustment
➆
Output jacks
➇
Serial number
Power connection scheme
➀
➀
➀
➀
Ground
➁
➁
➁
➁
Impulse -
➂
➂
➂
➂
6 – 12V External Power
➃
➃
➃
➃
I