R60 Station
R60 User Manual
Document Number
Version
Date
7000 120-019
A1
2022-08-10
Page 63 (98)
6.11
Configure > VSI & FSR sentences
Settings for VSI/FSR are found by selecting the Configure base category and then select
the VSI/FSR sub-category.
In this category it is possible to select the output of measurements made during
operation of the base station. The VSI (VDL signal information) sentence provides
measurement information associated with a single AIS message (transmitted or
received). The FSR (frame summary of AIS reception) sentence provides the average
noise and a summary of slot use during the previous frame, and expected slot use for
the current frame. The FSR sentence is output at the start of the current frame. For
more information on VSI and FSR sentences, see Ref [5].
The settings have the following meaning:
Parameter
Description
Enable VSI/FSR
Sentences About …
Enables or disables output of VSI and FSR sentences both, one of or none of
the channels A or B. The following options are available:
Enable VSI/FSR Sentences about channel A
Enable VSI/FSR Sentences about channel B
Enable VSI/FSR Sentences about every channel
Enable VSI/FSR Sentences about no channel
The VSI/FSR sentences are disabled for channels for which sentences are
not explicitly enabled.
VSI Sentence
These parameters are only valid if VSI sentences are enabled in the “Enable
VSI/FSI Sentences About …” drop down list.
The features listed below are enabled by setting a tick in the associated box. If
the box is unchecked, the feature associated with that box is disabled.
Output with Each VDM sentence
Enables/disables output of VSI sentence with each VDM sentence (received
message).
Output with Each VDO sentence
Select to activate output of VSI sentence with VDO sentence (transmitted
message).
Output Signal Strength
Enables/disables output of receiver input signal strength of the received
message in the VSI sentence.
Output First Slot Nr
Enables/disables output of the first number of message in the VSI sentence.
Output Msg Arrival Time
Enables/disables output time of message arrival in the VSI sentence.
Output Signal to Noise Ratio
Enables/disables output signal to noise ratio in the VSI sentence.
FSR Sentence
These parameters are only valid if FSR sentences are enabled in the “Enable
VSI/FSI Sentences About …” drop down list.
