GLOBALSTAR PROPRIETARY AND CONFIDENTIAL INFORMATION
Use or disclosure of data contained on this sheet is subject to the restrictions in the Distribution Statements on the title page of this
document.
06/18/20
Subject to Change without Notice
P a g e | 23
Example: firmware
Example response:
Firmware version: 1.0.0 (010000-010000)
4.1.1.8
“setup”
Command: setup
Arguments: <default channel> <Number of TX Tries> <Minimum time between tries> <Maximum time between tries>
Sending the command with no arguments returns the current settings. If sent with arguments, the response is the same,
confirming the settings.
Example: setup 0 3 60 120
Example response:
Setup: Channel: 0 Bursts: 3 Min Interval: 60 Max Interval: 120
All arguments must be present. If any are missing, or any are out of range, the command will return a fail message and
reason.
The Channel Field: May contain 0
–
3 corresponding to simplex Return Link channels A
–
D respectively. Note that this
will affect the channel for the next raw transmission. Subsequent GPS fixes will steer the active channel to the
appropriate one based on GPS location.
The correct Globalstar Simplex channel is dictated by RAS (Radio Astronomy Site) avoidance and by a “geofrequency”
channel map. Whenever the ST100 board obtains a fix, it sets the channel based on these criteria. If a user uses the
product
to send “raw” simplex messages without obtaining a fix
, it is up to the user to be aware of where the device is
and adhere to this channel map
. This is the command used to do that. See document GS
–
07
–
1248 - REMOTE TELEMETRY
SERVICE FREQUENCY PLAN FOR SIMPLEX TRANSMITTERS for more information on the method for channel selection.
The number of TX Tries field: Number of tries in the burst. Valid range is 1
–
15
Minimum time between tries: Based on a value from a legacy simplex transmitter (the original Globalstar STU), this is a
number of “5 second ticks”. E. g. 60 = 5 minutes (5 * 5 seconds = 300 seconds). Minimum value = 1 (5 seconds)
Maximum Value = 60 (5 minutes).
Maximum time between tries: Also, expressed in number of “5 second ticks”. Minimum value =
value of minimum time
+ 1. Maximum value = 120 (600 seconds).
The wait between each “try” will be an evenly distributed
pseudo-random amount of time between the minimum and
maximum value expressed above. Resolution of the pseudo-random timing for this device is 1.5 seconds.
