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RED DSMC OPERATION GUIDE: EPIC/SCARLET

SYNC TRIGGER BUTTON CIRCUIT

The SYNC connector has a 3.3 V Schmitt trigger (5 V tolerant). The trigger is not a switch closure circuit, so it

requires that the trigger source supplies current. Both edges of the input signal may be used as a trigger.

For example, this is the behavior of the circuit when the GPI trigger is used for record start/stop:

 Start Record: On ground to 3.3 V transition

 During Record: Hold at 3.3 V

 Stop Record: On 3.3 V to ground transition

 During Stop: Hold at ground

Input Voltage:

3.3 V to 5.0 V

100 ohm

1/4 W

On when output

signal is high

10 uF

electrolytic

10 V min.

Female

BNC

Push to make/break

button/toggle

Batteries:

2x AA or AAA

3x AA or AAA

1.7 V, 20 mA

68 ohm

1/4 W

NOTE: In the diagram above, values are approximate. Use standard values.

COMPATIBLE CABLES

 790-0154: 3BNC-to-00 LEMO Sync Cable

 790-0187: 4-Pin 00 LEMO-to-Flying Lead

 790-0415: RED Start/Stop Cable (14-Pin LEMO to SYNC, CTRL, BNC)

 790-0428: RED Start/Stop Cable (14-Pin to 00B SYNC)

Trigger Button

Circuit Diagram

Other manuals for RED Epic

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