Vaisala Hydromet Data Collection Platform - Manual (Page 179)

Chapter 4 ________________________________________________ Configuring Telemetry Options
VAISALA______________________________________________________________________ 177
Transmission Control for Secondary
Transmissions
Set up the transmission control for secondary transmissions similarly to
primary transmission using the spset command. However, different
control parameters are required for secondary transmissions. The
transmission control parameters are listed in
Table 20 on page 177 .
The unitload setting (goes_sec_unitload) defines the maximum allowed
transmission time per day on the secondary channel. For example, when
unitload is set to 8, then a maximum transmission time of 8 minutes is
allowed within every 24-hour interval.
The divisor of unitload interval setting (goes_sec_load_div) divides this
interval of 24 hours into shorter periods. For example, when unitload is
set to 8, and the unitload divisor (goes_sec_load_div) is set to 4, then a
maximum transmission time of 2 minutes is allowed within every 6-
hour interval.
The total transmission time within an interval will never exceed the
defined unitload. When the unitload limit has been reached, all further
secondary transmissions within the interval will be stopped.
Table 20 Transmission Control Parameters for Secondary
Transmissions
Parameter Value Description
goes_sec_window 0 ... n seconds Length of the interval within which
the report is randomly transmitted
(Required)
goes_sec_repeat 0 ... 2 times Number of randomly repeated
transmissions (Required)
goes_sec_channel 0 ... 266 Channel number of secondary
transmissions (Required)
goes_sec_unitload 1 ... n minutes Unitload limit in minutes per day
(Required)
goes_sec_load_div 1 ... n Divisor of the unitload interval
(Optional; the default value (1) is
used if not defined)
goes_sec_bps 100, 300, or
1200 Bit rate of secondary transmissions
(Optional; if not set, the bit rate of
primary transmissions set in Lizard is
used)