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--- ephys_pipeline:6_synchronization [2022/01/11 18:17] – [Internal ROC deriving state onsets and trial information] lukas.schneider
+++ ephys_pipeline:6_synchronization [2022/03/17 14:10] (current) – removed lukas.schneider
@@ Line 1: / Line 1: @@
-======= Synchronization =======
-This section describes how synchronization is achieved
-====== Synchronization during recording ======
-{{:ephys_pipeline:monkeypsych_dev_to_tdt_snychronization.png|}}
-Note that pins are only switched either to send trial information or after a state change (AND after the flip happened!)
-The idea is that both trial information and state information can be sent via the same channel.
-Details are described below.
-====== Resulting 8 pin state signal ======
-{{:ephys_pipeline:digital_communication_monkeypsych_to_tdt.png |}}
-Values of 252 to 255 are preserved for indicating start of trial/state information and in-between trial information stoppers:
-  * 252: indicates start of trial information
-  * 254: in between trial information to define trialinfo packages
-  * 253: end of trial information
-  * 255: start of state information
-Note that due to preserved values, a trial information package maximum value is limited. For example, to encode the date first package would be first 2 digits of the year, second package the last 2 digits of the year, third package the month and fourth package the day. That way none of the packages reaches a value of over 100.
-Trial information is sent during INI (state 1), during the other states the stat value reflects the current state.
-====== Internal ROC deriving state onsets and trial information ======
-{{:ephys_pipeline:tdt_stored_data.png |?500}}
-====== Snippet and Stream synchronization in the combined trial structure ======