Vaisala TCI101 NiteStar - Manual (Page 13)

STEP 2 : At the PLEN prompt, enter the length in current units
you would like your pulse to be on. You can set the pulse to be on
for a set length.
The length duration will have an error = +/- CALIBRATION
NO./1000 FEET. If you had a calibration number of 800, your
PDI pulse duration would be your set length +/- 0.8 FOOT.
The duration is limited to 32,768*
CALIBRATION NO. / 1000 FEET.
If you had a calibration # of 700 your max duration would be:
MAX Duration = 32,768* 700/1000 = 22,958 Feet.
or 0.034 mi… or 0.044 km
If you enter a value over this it will fold your input value back
down into this range.
IMPORTANT NOTE: Do not set this length greater than the
PDI distance. If you have a PDI distance of 100 feet, do not set
the duration to 200 feet. After the first pulse the PDI pulse will
go on then never shut off.
SETTING THE TYPE OF PDI
The device that uses the PDI signal sometimes has certain
requirements for the signal. The NITESTAR can produce three
types of PDI. Let us take for example a PDI set for every 10 feet
and a duration of 1 millisecond.
LOW GOING HIGH (DEFAULT SETTING)
The default setting would be with the output normally low (0
volts) and pulsing high at each PDI distance. If you want to return
to this default setting depress the following sequence of keys:
8PDI key, 6PRINT key, MARK/ENTR key.
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The output shown below is for Low Going High:
HIGH GOING LOW
If you want the output normally low ( 0 volts) and pulsing LOW at
each PDI distance depress the following sequence of keys:
8PDI key, 5BRIGHTNESS key, MARK/ENTR key.
The output shown below is for High Going Low:
FLIP FLOP
If you want to set FLIP/FLOP high on every other 10 ft stretch
depress the following sequence of keys: 8PDI key, 4UP/DOWN
key, MARK/ENTR key.
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