Vaisala TCI101 NiteStar - Manual (Page 14)

…and your output would be:
Note that the duration does not apply to this one, it just alter-
nates HIGH & LOW on each PDI distance.
ADVANCED PDI USES
As pre-mentioned a count of the PDI pulses can be displayed in
the INTERVAL window. You must set the Count Increment and
optionally the Starting Value. The INTERVAL window will then dis-
play the Starting Value and then with the vehicle moving and the
COUNT/HOLD off, the INTERVAL window will display the Count
Increment value as derived from the PDI pulse output.
SET COUNT INCREMENT
The Count Increment number is the amount of PDI pulses required
to increment the count displayed in the interval window. If you
set a PDI distance of 50 feet and a count increment of 1 you will
see the count displayed in the interval window every 50 feet.
You MUST set the count increment for the display PDI count func-
tion to be displayed. To set the increment count value depress
the following sequence of keys: 8PDI key, 7SPEED key, and
choose the INCREMENT DISTANCE.
Please note that after you
press the “7 SPEED” key, the default “1” will appear. At this
time, re-enter whatever value you choose. Press MARK/ENTR.
While entering increment distance depressing CLEAR/RST key
will set the distance and PDI count to 0.
While Count Increment is running
the INTERVAL will NOT be displayed.
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SET COUNT PRE-DISTANCE
To have your PDI count to start at a value other than 0 depress
the following sequence of keys: 8PDI key, 8PDI key again,
(ENTER PREDISTANCE VALUE), MARK/ENTR key. The value will
appear in the INTERVAL window.
SUMMARY PDI KEYS
First Press 8PDI and then:
2.) - Set PDI Distance
3.) - Set PDI Duration by TIME
3.) - Set PDI Duration by DISTANCE - (DISP/HOLD)
4.) - Set Flip/Flop PDI (High then low on alternate PDI distances)
5.) - Set HIGH going LOW signal
6.) - Set LOW going HIGH (Standard)
7.) - Set distance increment for PDI Count dis play
8.) - Set initial value for PDI Count display
CLEAR - Turn OFF PDI (& PDI count display)PDI
PDI COUNT USE
An example will make this function a little clearer. Many author-
ities are setting up 911 emergency call response systems. When
a person calls for help, the Emergency Response Center can, via
phone company equipment, determine the phone number of the
caller. The callers address can then be determined.
The Emergency Response Center can then dispatch police, fire
or ambulance teams to handle the problem. This may work well
except in rural areas when the addresses are undefined or Rural
Route box numbers. Emergency response teams may not know
how to locate the address. Rural governments are solving this
problem by naming all their roads (and putting up signs) and
assigning addresses to the houses on these roads. The phone
numbers are then associated with a street address that police,
fireman and ambulance drivers can find.
How do the local governments assign these addresses? After
naming the roads each house must be given a number. Each
house can not be numbered consecutively since new houses will
probably be built between existing houses and these places will
need numbers. If a standard lot width is determined (say 50’)
then every 50 feet assign a new address. This way you can num-
ber the houses now and when new houses are added you can give
them numbers in the correct order.
(continued…)
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