If you want to synchronize your TMSi SAGA with an external device, you can use the Sync Out port to send a pulse to the external device. This pulse can then be used to synchronize the two datasets in post-processing. This Knowledge base article explains how the Sync Out port works.
The sync-out port on the SAGA Data Recorder has an open collector configuration, functioning similarly to a switch. When the sync pulse is active, the switch circuit is closed, pulling the output towards ground and resulting in a 0V output voltage. Conversely, when the sync pulse is inactive, the switch circuit is open, leaving the output voltage floating.
To stabilize the voltage at the output port and ensure a defined voltage level, an external "pull-up" voltage must be supplied. This external voltage can be sourced from the input port of the connected device or an external power supply, such as a battery. To limit current flow, a resistor should be added in the circuit.
A common method to achieve this is by connecting a battery or multiple batteries with a voltage range of 3-5 V along with a resistor, as shown in the electrical scheme below.
The resistor regulates the current flow and consequently stabilizes the voltage at the output port (‘Out'), which connects to the input of the external device.
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