GRASS VALLEY Creative Grading - Studio Signalling

Creative Grading Camera Control System User’s Guide (v1.4) 61
Chapter 7 - Specifications
Preview connector
7.2.5 Studio signalling
The CGP accepts tally signal inputs at its preview connector, which has three GPIO (General
Purpose Input/Output) contacts for tally signals.
To enable the GPIO inputs on theCGP enter the CGP Setup menu and go to the Install section.
Here you can individually enable, disable and configure the tally inputs. For the different
options and settings refer to the examples below.
☞
Note
☞
Note
Before using studio signalling on the CGP, the connected XCU must be configured to use
Ethernet based signalling (as opposed to using its own studio signalling GPIO inputs). To do
this, enter the menu in the XCU and go to the
INSTALL > SIGNALLING INPUT submenu and
set the ONAIR SOURCE item to Ethernet.
Pin Description
1 Preview contact 1A
1)
2 Preview contact 1B
1)
3 Preview contact 1C
1)
4 +REF external (typ. 4.1 V)
5GND
6 GPIO contact for Yellow Tally/ISO
(=TallyYinp)
7 GPIO contact for Green Tally/Call
(=TallyGinp)
8 GPIO contact for Red Tally/On Air
(=TallyRinp)
9 shield
Sub D connector
9-pin male
12345
678
9
1)
For a Preview contact wiring
application, see the example
schematic below.
1
2
3
4
5
6
7
8
9
1A
1B
1C
Preview
switch
Preview
connector
Preview switch not pressed:
1A is connected to 1C
Preview switch pressed:
1A is connected to 1B