I/O module

The camera back transmitter’s I/O module provides connectors for video, power, control, and audio.

Note: There are two versions of the I/O module. The older version supports just Quad 3G UHD; the latest version supports 12G, Dual 6G and Quad 3G. If you are using the older version, you will only be able to use the transmitter with certain types of cameras.
Figure 1. Connectors on the 4K camera back transmitter’s I/O module


Key Component Description
1 SDI IN 1

Use to connect the camera back transmitter to the camera’s SDI ports if you are using SDI as the video source.

If you are using the 12G I/O module, the input connectors are as follows: 1: 12G, 2: 6G, 3: 3G, and 4: 3G. The 12G transmitter automatically detects the connected video format.

If you are using the Quad 3G I/O module, all SDI inputs are 3G.

Connector: BNC (F).
2 SDI IN 2
3 SDI IN 3
4 SDI IN 4
5 F SYNC

Provides a connection to a client-supplied B&B or tri-level signal used to synchronize the video image.

Connector: BNC (F).
6 ASI IN/OUT

Use to provide an ASI input or output to other Real Freedom or third-party equipment.

Connector: BNC (F).
7 A1 L+R

Balanced analog audio inputs (Mic/Line level support with phantom power).

Use to connect a microphone or audio signal from signal-processing equipment and mixing consoles.

A1 is the primary analog audio into the camera back transmitter.

A2 is the secondary/aux analog audio into the camera back transmitter.

Connector: LEMO 6-pin
8 A2 L+R
9 CAM CNTRL

Use to connect the camera back transmitter to the ‘Remote’ port on the camera to control camera settings.

Connector: LEMO 5-pin 0B HGG.0B.305
10 9–18 VDC

Use to connect an external DC power supply to power the camera back transmitter.

Connector: LEMO 0B 2-pin HGG.0B.302
11 AUX

Use for auxiliary data and tally light signals.

Connector: LEMO 9-pin