Rockwell Automation 1785-TR10BF Optical Transceiver Installation Instructions - Manual (Page 2)

1785-5.19 - January 1999
2 Optical Transceiver
Description The 1785-TR10BF mini optical transceiver can be connected to the AUI
interface of a device either directly or via an AUI cable. It is connected to
the fiber optic cable by a BFOC socket.
The 1785-TR10BF mini optical transceiver offers these functions according
to IEEE 802.3 10BASE-FL:
•
indication via LEDs of data transmission and reception through the fiber
optic cable
•
detection of data collisions in the network and reporting them to the
terminal equipment as well as indicating them by an LED
•
ability to enable/disable the SQE test: at the end of every transmit
operation, a short collision signal (heart beat) approx. 1 µs long is sent to
monitor the electronics
•
jabber control and display: protect the network from data packets that are
too long (> 70 ms)
•
link status: an IDLE signal continuously monitors the fiber optic cable
segment for breakage
AUI I
n
te
rf
ace
(15-pi
n sub-
D c
onnec
tor)
Tx-Packet
Detect
Rx-Packet
Detect
Collision
Detector
SQE-Test
Osc.
ENABLE/
DISABLE
Collision
Generator
DO
CI
DI
Loopback
Data
Rx-Data
Lowlight
Detection
Rx-Data
Jabber
Protect
Tx-Data
Idle
Generator
Fi
b
er O
p
ti
c In
ter
face
(a
cc
. to
10B
AS
E
-F
L
)
DISABLE
ENABLE