Rev.7a (for units from ser.no. 51053/built 2010) 26.01.2010 This document substitutes previous versions page 22 of 34
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AIRCOM Manual
7.3.
Control I/O - GPI I/O
Outputs
ON AIR A
Æ
active, when ON AIR button COMM A is activated
ON AIR B
Æ
active, when ON AIR button COMM B is activated
ON AIR G
Æ
active, when ON AIR button GUEST is activated
COM 1 A
Æ
active, when TALK 1 button in operation area of commentator A is depressed
COM 2 A
Æ
active, when TALK 2 button in operation area of commentator A is depressed *
COM 3 A
Æ
active, when TALK 3 button in operation area of commentator A is depressed
COM 1 B
Æ
active, when TALK 1 button in operation area of commentator B is depressed
COM 2 B
Æ
active, when TALK 2 button in operation area of commentator B is depressed *
COM 3 B
Æ
active, when TALK 3 button in operation area of commentator B is depressed
* also refer to chapter 6.5 COM 1 A/B: In case COM1 A/B mode is configured, TALK 2 buttons are
disabled. The same applies to COM2 control outputs.
Inputs
LINK
Æ
when activated, sets AIRCOM into REMOTE LINK mode presumed REMOTE ENABLE
switch is in the depressed position
OFF AIR A
Æ
when activated, ON AIR button COMM A will be deactivated *
OFF AIR B
Æ
when activated, ON AIR button COMM B will be deactivated *
OFF AIR G
Æ
when activated, ON AIR button GUEST will be deactivated *
SC CUT A
Æ
when activated, SIDECHAIN monitoring of commentator A is disabled * **
SC CUT B
Æ
when activated, SIDECHAIN monitoring of commentator B is disabled * **
GUEST LOCK (Option)
Æ
when activated, ON AIR GUEST button is forced to the on state,
can only be deactivated by OFF AIR G
(GUEST LOCK is independent from REMOTE LINK mode)
* applicable only if AIRCOM is in the REMOTE LINK mode
** CONFERENCE function overrides SC CUT, i.e. operator can use CONFERENCE even if SC CUT is
activated.
Note concerning OFF AIR:
Use OFF AIR control inputs to control ON AIR state. Control input was
designed as inverting control logic for the reason that the final decision, if they are ON AIR or not,
should be reserved to the commentators.
In order to prevent the operator error “commentator forgets to switch ON AIR” (e.g. after a show break)
you can operate AIRCOM in ON AIR LOCK mode (refer to 6.1).
Note concerning SC CUT:
Practical examples for the use of SC CUT
-
In some applications program monitor signal contains the commentator’s signal during parts of the
program. In case digital transmission lines (which cause latency time) are used, there could be
phase shifts between SIDECHAIN signal and program signal or even more irritating effects. Use SC
CUT to remote control SIDECHAIN monitoring depending on the program signal which is fed to
AIRCOM.
-
For some commentators SIDECHAIN monitoring gives an important feedback about their ON AIR
state. If not the commentator himself, but some other, off site personnel switches ON AIR/OFF AIR,
use SC CUT to create the monitoring performance required for the application.
