altos/test: Adjust CRC error rate after FEC fix

[fw/altos] / doc / aprs-operation.inc

diff --git a/doc/aprs-operation.inc b/doc/aprs-operation.inc
index 9b1d91ebdc06b30be8c880fa321368154d3f8ff5..d0e382665eadccda1ef517737d7eb4430aed11ce 100644 (file)
--- a/doc/aprs-operation.inc
+++ b/doc/aprs-operation.inc
@@ -1,12 +1,19 @@
        === APRS
 
                {aprsdevices} can send APRS if desired, and the
-               interval between APRS packets can be configured. As each APRS
-               packet takes a full second to transmit, we recommend an
-               interval of at least 5 seconds to avoid consuming too much
-               battery power or radio channel bandwidth. You can configure
-               the APRS interval using {application}; that process is described in
-               <<{configure_section}>>.
+               interval between APRS packets can be configured. As
+               each APRS packet takes a full second to transmit, we
+               recommend an interval of at least 5 seconds to avoid
+               consuming too much battery power or radio channel
+               bandwidth. You can configure the time within each
+               minute that APRS transmits by changing the APRS offset
+               value. When the GPS signal is locked and knows the
+               current time, the APRS offset selects the time with
+               each minute for the first APRS transmission;
+               subsequent transmissions occur each APRS interval
+               seconds thereafter.  You can configure the APRS
+               interval and APRS offset using {application}; that
+               process is described in <<{configure_section}>>.
 
                AltOS supports both compressed and uncompressed APRS
                position report data formats. The compressed format
@@ -26,10 +33,9 @@
                the receiver. By default, the SSID is set to the last digit of
                the device serial number.
 
-               The APRS packet format includes a comment field that can have
-               arbitrary text in it. AltOS uses this to send status
-               information about the flight computer. It sends four fields as
-               shown in the following table.
+               The APRS packet format includes a comment field that
+               can have arbitrary text in it. AltOS uses this to send
+               status information as shown in the following table.
 
                .Altus Metrum APRS Comments
                [options="header",cols="1,1,3"]
@@ -48,6 +54,8 @@
                |B4.0
                |Altimeter Battery Voltage
 
+       ifdef::altusmetrum[]
+
                |4
                |A3.7
                |Apogee Igniter Voltage
@@ -59,8 +67,19 @@
                |6
                |1286
                |Device Serial Number
+
+       endif::altusmetrum[]
+       ifdef::telegps[]
+
+               |4
+               |1286
+               |Device Serial Number
+
+       endif::telegps[]
+
                |====
 
+               ifdef::altusmetrum[]
                Here's an example of an APRS comment showing GPS lock with 6
                satellites in view, a primary battery at 4.0V, and
                apogee and main igniters both at 3.7V from device 1286.
@@ -68,13 +87,25 @@
                ....
                L6 B4.0 A3.7 M3.7 1286
                ....
+               endif::altusmetrum[]
+
+               ifdef::telegps[]
+               Here's an example of an APRS comment showing GPS lock with 6
+               satellites in view and a primary battery at 4.0V from device 1876.
+
+               ....
+               L6 B4.0 1876
+               ....
+               endif::telegps[]
 
-               Make sure your primary battery is above 3.8V, any
-               connected igniters are above 3.5V and GPS is locked
-               with at least 5 or 6 satellites in view before
-               flying. If GPS is switching between L and U regularly,
-               then it doesn't have a good lock and you should wait
-               until it becomes stable.
+               Make sure your primary battery is above 3.8V
+       ifdef::altusmetrum[]
+               any connected igniters are above 3.5V
+       endif::altusmetrum[]
+               and GPS is locked with at least 5 or 6 satellites in
+               view before flying. If GPS is switching between L and
+               U regularly, then it doesn't have a good lock and you
+               should wait until it becomes stable.
 
                If the GPS receiver loses lock, the APRS data
                transmitted will contain the last position for which