DS4-2511C
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10. Operation
(1) The data frame to be transmitted to the receiving unit is sent as soon as it is input to this equipment
from an external device. Data equivalent to 1 frame is not accumulated inside the equipment.
(2) Data frame sent from the receiving unit is sent to an external device as soon as it is received.
(3) Functions of sending data indicator lamp (SD) and receiving data indicator lamp (RD)
Sending data indicator lamp (SD) blinks in red when sending input is active.
Receiving data indicator lamp (RD) blinks in green when receiving input is active.
(4)When optical path is shielded, the receive indicator lamp goes off, and no data can be
sent any longer. Reception level is not displayed, either, at the receiving unit.
(5)Functions of link indicator lamp (LINK) and full-duplex indicator lamp (FDX)
Link indicator lamp (LINK) shows green when the network connection with the external device
connected to the signal connector is normal.
Full-duplex indicator lamp (FDX) shows green when the network connection with the external
device connected to signal connector is in full-duplex mode.
(6) Aux. output operates as shown below.
1) DL: Transistor turns on when the data ling is normal.
2) ALM: Transistor turns off when the reception level indicator lamp (LEVEL 1) is off.
(7) The statuses of indicators and subsidiary outputs change as shown below when the beam is received
or interrupted.
Unit 1
Unit 2
Condition
Light intensity
received by
this unit
Light intensity
received by the
other unit
DL
output
ALM
output
Light intensity
received by
this unit
Normal
L1 or more
L1 or more
ON
ON
The same with
(1)
Insufficient light
intensity (cleaning or
beam adjustment
required)
CD only
CD or more
ON
OFF
The same with
(1)
Interrupted (cleaning or
beam adjustment
required)
Off
Off
OFF OFF Off
CD
or
more Off
OFF OFF CD
or
more
Affected by external
disturbance or reflected
light
L1
or
more Off
OFF OFF CD
or
more
Note: If the system is affected by an external disturbance or reflected light, different
values will be indicated by units 1 and 2 to represent the light intensity received
by unit 2.
