OPTICAL SYSTEMS DESIGN
DOC ID: 10102908
OSD730 OPERATOR MANUAL
Page 15
2.3.3
INDICATORS
The OSD730 has 2x4 sets of LEDS across its front panel and a single bicolour Link Status LED.
Audio LEDs
Data LEDs
FIGURE 8: OSD730 LED INDICATORS
The Tx columns of LEDs indicate that a signal is being transmitted from the OSD730 when they illuminate red.
The Rx columns of LEDs indicate that a signal is being received by the OSD730 when they illuminate green.
Each row indicates the channel being transmitted/received.
The Link Status LED Indicator refers to the received data stream. LED is ‘green’ after the optical link is
established and the receiver is locked onto the incoming data stream and detects a low Bit Error Rate. LED will
indicate ‘red’ after the Bit Error Rate reaches an unacceptable level or when there is no optical link established.
This link status signal is duplicated as an electrical signal, TTL level, on pin 22 of the DB44 connector on the
back of the OSD730C.
Audio LEDs
Data LEDs
Link Status
Tx
Rx
Ch1
Ch2
Ch3
Ch4
Tx
Rx
Ch1
Ch2
Ch3
Ch4
