Sutron Satlink 3 - Page 85

Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 85
STD Speed Scalar – This is the standard deviation of the scalar wind speed.
STD Direction Unit – This is the standard deviation of the direction unit.
STD Direction Wind – This is the standard deviation of the direction wind.
Min Speed Scalar – This is the minimum of the scalar wind speed.
Max Speed Scalar – This is the maximum of the scalar wind speed.
Max Direction – This is the direction taken at the time the max speed is
detected.
Count – This is the number of samples that have been taken.
Time of Max Speed – This is the time in seconds past midnight, when the
maximum speed was recorded.
9.3.7. Measure Type: Digital
Use the setting Digital Type to tell Satlink what kind of sensor is connected.
9.3.7.1. Digital Type
Satlink supports the following digital types:
 Level 1&2 (terminal 8 and 10)
 Counter 1&2 (terminal 8 and 10)
 Frequency 1&2 (terminal 8 and 10)
 Period 1&2 (terminal 8 and 10)
Frequency will have Satlink sample the input for 750ms. It will provide a result that is the average
frequency of the input during that time span.
10kHz is the maximum input frequency that Satlink supports.
When Period is the chosen type, Satlink will watch the input line for up to 10 seconds. Satlink
stops watching as soon as one wave period is noticed on the input. Please note that a period
measurement could take just over 20 seconds to complete (up to 10 seconds per edge of the
signal). If such a slow signal may appear on the input, please make sure that the measurement
interval is long enough (longer than 20 seconds) to prevent missing measurements.
Digital measurements also use the Warmup setting. If Warmup is not zero, then switched power
and VREF will be turned on during a Digital measurement. See the section on analog
measurement types for details on Warmup.
Counter type readings may be optionally de-bounced for 4ms using the Debounce setting. The
4ms de-bouncing eliminates false counts from tipping buckets and other devices with noisy
switches.