Page 15 MNVCSM42A_1511_EN
4 Matrix operating features
4.1 Video input management
4.1.1 Automatic switching sequences
The automatic switching sequences are groups of input videos that are displayed consecutively in the
order and for the length of time defined by the operator. Each switching sequence consists of a minimum of 1
and a maximum of 16 program steps (identified by the letters from A to P).
Each step describes:
the input to be viewed
the viewing time, from 1 to 300 seconds.
There are no restrictions to programming the switching sequence: an input can even be repeated more than
once, as shown in the example below:
Step Input Length
Comment
A
1 2 Input 1 is on view for 2 seconds
B
2 4 Input 2 for 4 seconds
C
5 7 Input 5 for 7 seconds
D
- - - Step D is ignored and will be jumped
E
2 5 Input 2 is on view again for 5 seconds
F-P
- - - If there are no further program steps, the automatic switching
sequence will resume from step A.
4.1.2 Manual selection
From the keyboard, the operator can directly select a desired input, interrupting the automatic switching
sequence.
A specific input video is always selected with reference to the active monitor: if the keyboard is authorised to
control more than one monitor only the “active monitor” (the last one to be selected) will be involved in the input
video selection.
The local keyboard and the remote DCTEL and DCBD keyboards can be used to control all outputs. Keyboards
DCJ and DCK can be configured to restrict access to a set of output videos dedicated to each operator, so as to
prevent unauthorised personnel from operating at will on all outputs.
4.1.3 Using the Inc/Dec keys
The Inc/Dec keys can be used to block an automatic switching sequence on one input and, where appropriate,
to select the next/previous input video (following the preset order for the switching sequence in progress)
without having to use the numeric keypad to select an input.
4.1.4 Output video dedicated to the VCR
Output video n°2 of matrices SM42A and SM82A is dedicated to the VCR if it is enabled. In this case control of
the VCR channel is only subject to the trigger impulse itself. Any command that may be sent from the keyboard
concerning this channel will therefore be ignored.
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