X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=doc%2Faltusmetrum.xsl;h=39b3998a5154f35e35fa9042b56222b79340e736;hp=d3d1f72a9e1228e9536c9610a4a9a9f4387f6e7f;hb=0bf1c74e83fe49a11916b52596363f4dd56c522c;hpb=874d0065ecb066ee746a016876edebc7cc6e3d96
diff --git a/doc/altusmetrum.xsl b/doc/altusmetrum.xsl
index d3d1f72a..39b3998a 100644
--- a/doc/altusmetrum.xsl
+++ b/doc/altusmetrum.xsl
@@ -1539,10 +1539,13 @@ NAR #88757, TRA #12200
first five seconds of operation.
- At power on, you will hear three beeps or see three flashes
- (âSâ in Morse code for start up) and then a pause while
- the altimeter completes initialization and self test, and decides
- which mode to enter next.
+ At power on, the altimeter will beep out the battery voltage
+ to the nearest tenth of a volt. Each digit is represented by
+ a sequence of short âditâ beeps, with a pause between
+ digits. A zero digit is represented with one long âdahâ
+ beep. Then there will be a short pause while the altimeter
+ completes initialization and self test, and decides which mode
+ to enter next.
Here's a short summary of all of the modes and the beeping (or
@@ -1570,7 +1573,7 @@ NAR #88757, TRA #12200
Startup
S
- dit dit dit
+ battery voltage in decivolts
Calibrating sensors, detecting orientation.
@@ -2180,6 +2183,20 @@ NAR #88757, TRA #12200
way quite happily, including Keith's successful L3 cert.
+
+ Apogee Lockout
+
+ Apogee lockout is the number of seconds after boost where
+ the flight computer will not fire the apogee charge, even if
+ the rocket appears to be at apogee. This is often called
+ 'Mach Delay', as it is intended to prevent a flight computer
+ from unintentionally firing apogee charges due to the pressure
+ spike that occurrs across a mach transition. Altus Metrum
+ flight computers include a Kalman filter which is not fooled
+ by this sharp pressure increase, and so this setting should
+ be left at the default value of zero to disable it.
+
+