User`s manual
- 20 -
G CHB Enable (0-Off, 1-IGN, 2-Servo CCW, 3-Servo CW, 4-Airstart)
H CHB On-Time <1-9, 0-Cont.> {only if CHB Enable =1 or 4}
H Servo PWM <0-9> {only if CHB Enable = 2 or 3}
This setting controls the Channel B deployment channel. When set to “0”, the channel is turned
off, so the other settings don’t matter. When set to 1-3, the deployment channel turns on at nose-
over, 1 second after apogee. If this setting is 2 or 3, the deployment channel sends out pulses
that can control standard analog hobby servos. The amount of servo rotation is controlled by the
Servo Skew value, each tick changes the servo pulse width (nominally 1.5 ms) by plus-minus
100 microseconds, so the total possible range of servo pulse width is .5 to 2.5 ms. The servo
pulses are sent for 3 seconds after deployment, this value is not configurable but is more than
adequate for even the slowest servos.
If CHB Enable is set to 4, the channel is used for airstarts. Channel B will fire on the way UP,
after the Breakwire has been tripped AND LDA has been reached AND the Burn Timer AND
Airstart Delay timers expire. See Appendix D for more information on airstarts. WE
STRONGLY RECOMMEND THAT YOU RUN A SOFTWARE SIMULATION ON ANY
AIRSTART CONFIGURATION BEFORE SETTING THE AIRSTART DELAY VALUE.
The effect of the settings are:
CHB Enable CHB On Time
0 n/a Deployment Channel OFF
1 1-9 secs Deployment channel activated at Nose-Over
for CHB-ON seconds
1 0 Deployment channel activated at Nose-Over
and held on continuously until Reset
4 1-9 secs Deployment channel activated after expiration
of Burn Timer/Airstart Delay for CHB-ON
seconds, IF the breakwire has been tripped
4 0 Deployment channel activated after expiration
of Burn Timer/Airstart Delay and held on
continuously until Reset, IF the breakwire has
been tripped
CHB Enable Servo PWM
2 0-9 Deployment channel activated at Nose-Over
in servo mode, counter-clockwise, amount of
rotation controlled by Servo PWM setting
3 0-9 Deployment channel activated at Nose-Over
in servo mode, clockwise, amount of
rotation controlled by Servo PWM setting
The time and altitude of the CHB deployment are recorded in Flight Summary memory for later
downloading. Note that in the case of Airstarts at high speed, this data may not be accurate,