Bittree 422A32 Manuale d'uso - Pagina 9
Sfoglia online o scarica il pdf Manuale d'uso per Apparecchiature di registrazione Bittree 422A32. Bittree 422A32 15. Rs-422 64-port active data patchbay
Stampa la pagina
Figure 3 – Schematic circuit diagram of a vertical slice of the patchbay
As shown in Figure 3, the green LED of each jack is connected to the signal line driven by pins 3
and 8 of the corresponding rear panel DE9 connector. On these pins a controller sends its
periodic hailing command when searching for a connected remote device. Therefore, when a
controller is connected to a DE9 port, the green LED of the corresponding jack on the front panel
starts flashing, indicating that the controller has been successfully connected and is searching for
a remote device. Simultaneously, the green LED of the other jack, located vertically above or
below the first jack, will start flashing if there is no patchcord plugged into the first jack. This is
because the internal normaling connection carries the controller's commands to the second jack.
If the first jack had been connected to a different jack with a patchcord, then the green LED of
that jack would flash, verifying that the controller's commands are reaching that jack, and
therefore also the rear panel DE9 connector corresponding to that jack.
The yellow LED of each jack is connected to the signal line driven by pins 2 and 7 of the
corresponding rear panel DE9 connector. A remote device responds to the controller's
commands on these pins. A remote device, however, will not send any data on these pins until it
recognizes an incoming command on pins 3 and 8. Therefore, when connecting a remote device
to a DE9 connector of the patchbay that is not patched to a controller (either by an internal
normaling connection or by a patchcord), the yellow LED of the corresponding jack will not
flash. It will only start flashing when a controller is patched to that remote device, indicating
that the remote device is receiving the controller's commands and is responding to them. At that
time, the yellow LED of the jack that the remote device is connected to and the yellow LED of
Page 9 – Bittree RS-422 64-Port Active Data Patchbay User Guide