Index: lt8900_spi/__init__.py
==================================================================
--- lt8900_spi/__init__.py
+++ lt8900_spi/__init__.py
@@ -369,10 +369,13 @@
 		value1 = self.get_register(0);
 		value2 = self.get_register(1);
 
 		if value1 == 0x6fe0 and value2 == 0x5681:
 			return True
+
+		self._debug(f'Expected 0x6fe0, 0x5681 and got 0x{value1:04x}, 0x{value2:04x}')
+
 		return False
 
 	def _get_default_register_value(self, register):
 		return self._default_register_values.get(register, {})
 
@@ -671,12 +674,12 @@
 
 	def multi_transmit(self, message, channels, retries = 3, delay = 0.1, syncword = None, submit_queue = '__DEFAULT__', format_config = None):
 		if len(channels) == 0 or retries == 0:
 			self._error("Asked to send the message {} a total of zero times ({} channels, {} retries)".format(message, channels, retries))
 
-		# Wait at-least 350 microseconds between frames
-		min_delay = 350.0 / 1000000.0
+		# Wait at-least 650 microseconds between frames
+		min_delay = 650.0 / 1000000.0
 		post_delay = min_delay
 		final_delay = delay
 
 		for channel_idx in range(len(channels)):
 			if channel_idx == (len(channels) - 1):