RED DIGITAL CINEMA DSMC2 BRAIN with HELIUM 8K S35 Sensor (2018 Unified DSMC2 Lineup) - Manual (Page 234)

COMPATIBLE CABLES
790-0154, 790-0643 : 3BNC-to-00 Sync Cable
790-0187, 790-0648 : 4-Pin 00B-to-Flying Lead
White : Ground
Yellow : RS232 RX
Blue : Shutter/sync, general purpose output
Red : RS232 TX
Black : Shield
790-0415 : RED Start/Stop Cable (14-Pin 1B to SYNC, CTRL, BNC)
SERIAL (RS232 CONTROL)
The DSMC2 REDVOLT Expander features a SERIAL connector. The 7-Pin 0B SERIAL port connector supports RS232
RX, RS232 TX, and a General Purpose Input (GPI) trigger (active-low switch closure). The connector also offers
auxiliary power out, with a maximum sustained current draw of 1.5A.
To operate the GPI contact closure style trigger, short Pin 7 (GPI) to Pin 6 (ground).
The SERIAL connector was designed to support 6-pin 0B cables used with the RED Tactical Hand Controller (T.H.C.).
Although the connectors on those cables do not have pin 7 (GPI), the other 6 pins do match pins 1 to 6 on the SERIAL
connector.
Figure: Front Face of the SERIAL (RS232) Connector (Looking at the Camera)
SERIAL CONNECTOR
PIN SIGNAL DESCRIPTION DIRECTION
1 GND Camera ground N/A
2 RS232 RX RS232 RX In
3 RS232 TX RS232 TX Out
4 AUX OUT +11.5 to +17 VDC unregulated battery pass-through power Out
5 N/A No connection (NC) N/A
6 GND Camera ground N/A
7 GPI General Purpose In (GPI) trigger (active-low switch closure) In
NOTE: Mating connectors are FHG.0B.307.CLAD (right-angle) or FGG.0B.307.CLAD (straight).
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DSMC2 HELIUM OPERATION GUIDE