-24-
5.1.4.1
Sync In
The Sync In camera input is TTL adapted (high impedance). To adapt to 50 Ohm, please add an external 50
Ohm termination. The input principle is described by Figure 17.
To operate Sync In correctly, a Sync In driver has to be used with a minimum sink current (TTL low level) of
5mA.
Source Current (TTL High Level) of the Sync In Driver is negligible (0mA)
Easiest driver circuit is a transistor working in open collector configuration.
Figure 17: Sync In Input Schematics
5.1.4.2
Sync Out
Sync Out has a built in 50 Ohm driver. The output principle is described by Figure 18.
At 50 Ohm termination, the driver voltage is betwe
en 0 (low level) to ≈2 Volts (high level).
At high impedance termination, the driver voltage is in between 0 (low level) to ~4 Volts (high level).
Figure 18: Sync Out Output Schematics
Sync In input voltage limits are: [-5V
+30V].
Voltages beyond these limits may damage camera.
