Intellisystem IT-7301-PC, Руководство пользователя

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4.3 Front and rear panels of Rack mountable casing
 RACK front panel
：
RACK Front Panel
+5V
：
5V main power supply indicator lamp
+12V
：
12V fan power supply indicator lamp
Under the panel is a group of indicator lamps matrix:
PWR: power supply lamp
；
RXD: lightening upon data receiving
；
TXD: lightening upon data sending
；
LOS: lightening when either optic line or E1 line gets lost
；
LOF: lightening after a synchronization of data out-of-frame
；
TEST: lightening during loopback test
；
PTOK: lightening after a successful pseudo-random code test
；
 RACK rear panel
：
RACK Rear Panel