Confirming a device with Vera

I use an RFXCOM transceiver connected to a VeraLite to confirm the signal when bonding with an wireless electrical window blind motor.
The short burst of a signal isn’t a long enough of a duraton to establish that signal with the motor.
How do I increase the duration of the signal when transmitting from Vera? Is it done from the Vera device setup screen?
Thank you.
rvalverde@jbrnd.com