THOMSON DD10, Installation Manual

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1
5
6
9
RS-422
7. Description of the Interface Diamond digital
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7.3 IDENT XBAR INTERFACE
If a TVS or Venus preselection matrix or a Philips Jupiter control system is con-
nected to the DD20 and DD30 production switchers, the IDENT XBAR protocol
may be used to transmit the abbreviated names of the sources corresponding to
the current switcher status from the matrix to the switcher. The current source name
is then indicated in the displays (option) of the source selection keys.
Installation The installation of this mode of operation is made in the IDENT INPUT installation
menu. The cursor must be moved to the table position of the input linked with XBAR
output. Then the XBAR softkey must be selected in the menu and the number of the
corresponding XBAR output must be entered with the numeric keypad.
In the CONFIG E-BOX installation menu, the IDENT XBAR protocol must be
selected for the port that is linked e.g. to the TVS controller interface CI-2000. The
controller interface CI-2000 is in turn linked by party line to the TVS matrix and the
TVS panel.
Note: The controller interface CI-2000 must have the corresponding soft-
ware. For the Jupiter control system a VM board or a SI board is
available as interface.
In order to clear a XBAR entry in the IDENT INPUT menu, proceed as follows: move
cursor into the corresponding field, press XBAR again and then clear the entry by
pressing CLEAR in the numeric keypad.
For the three serial ports of the switcher electronics the XBAR Ident protocol is
available. The protocol serves to transmit mnemonic codes to the switcher at a rate
of
38.4 kBaud, 8 databits, even parity, 1 stop bit.
The transmission can be made from any computer system with a serial interface.
The serial interface must correspond to the RS-422 standard.
In this mode the switcher operates as tributary, the port (9 pin D-sub, female) of the
switcher is assigned as follows:
Pin 1, 9 Frame ground
Pin 2 Transmit A
Pin 3 Receive B
Pin 4 Receive common
Pin 5 not connected
Pin 6 Transmit common
Pin 7 Transmit B
Pin 8 Receive A
XBAR Protocol