X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=doc%2Fusage.inc;h=68d08bad8690a821f8b5649f70d788e187383156;hp=d010f398e76d926559dc5eb398217f074b0b88f3;hb=5b1bd4f87f682c1956e173a27414ceb076b20ceb;hpb=8284ba8bf78aade8f9d8f711cfefe2010ce81066

diff --git a/doc/usage.inc b/doc/usage.inc
index d010f398..68d08bad 100644
--- a/doc/usage.inc
+++ b/doc/usage.inc
@@ -297,7 +297,8 @@
 
 		To use a separate pyro battery, connect the negative pyro
 		battery terminal to the flight computer ground terminal,
-		the positive battery terminal to the igniter and the other
+		the the switched positive battery terminal to the igniter 
+		and the other
 		igniter lead to the negative pyro terminal on the flight
 		computer. When the pyro channel fires, it will complete the
 		circuit between the negative pyro terminal and the ground
@@ -305,6 +306,12 @@
 		to hook this up for each flight computer will be found
 		in the section below for that flight computer.
 
+		Note that you must include a switch in the positive lead of 
+		the pyro battery for safety, as the on-board power switch 
+		circuit on our product only controls current flow from the 
+		the primary or system battery!
+
+
 	=== Using a Different Kind of Battery
 
 		EasyMini
@@ -323,3 +330,22 @@
 		different kind of battery to any of these will destroy
 		the board.
 		endif::telemega,easymega,telemetrum[]
+
+	=== Using Packet Link Mode
+
+		All AltusMetrum flight computers that have a radio can
+		communicate with the ground station software for
+		configuration and other operations using the Packet
+		Link mode. This uses radio communication instead of a
+		USB cable. To set this up, the ground station software
+		must be configured to the correct data rate, frequency
+		and callsign.
+
+		You can monitor Packet Link mode from TeleBT or
+		TeleDongle by watching the LEDs. Each time the device
+		transmits, the red LED will flash. When the link is
+		busy, or when the link is not working, the device will
+		transmit 10 times per second, so the LED will flash
+		rapidly. When the link is working and there is no data
+		to send, the link will flash once per second, and the
+		LED will flash more slowly.