diff --git a/invesalius/constants.py b/invesalius/constants.py
index ef467dc..9379a99 100644
--- a/invesalius/constants.py
+++ b/invesalius/constants.py
@@ -834,4 +834,4 @@ WILDCARD_MARKER_FILES = _("Marker scanner coord files (*.mkss)|*.mkss")
 # Serial port
 BAUD_RATES = [300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200]
 BAUD_RATE_DEFAULT_SELECTION = 4
-PULSE_DURATION_IN_MILLISECONDS = 5
+PULSE_DURATION_IN_MILLISECONDS = 0.2
--
libgit2 0.21.2