OPERATION
Copyright 2007
5-25
S SC150e HARDWARE REFERENCE
FIBER-OPTIC LOOPBACK
When this mode is invoked, the output of the transmitter is connected by fiber optics
directly to the input of the receiver, and the receiver is disconnected from the network.
Table 5-10 Fiber-optic Loopback Mode States
State Register
Setting
Receive Enable
CSR0[0]
ON
Transmit Enable
CSR0[1]
ON
Insert Enable
CSR0[15]
ON
Enable Wire Loopback
CSR2[7]
OFF
Disable Fiber-optic Loopback
CSR2[6]
OFF
Mechanical Switch Override
CSR8[11]
ON
Media Circuitry
Rx
Tx
Rx
Tx
Internal
PLL and Data
Recovery
MECHSWITCH
FO
Conv
FO
Conv
Fiber Optic Bypass Switch
(Optional)
RX
ENABLE
TX
ENABLE
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ENABLE WIRE
LOOPBACK
INSERT
Figure 5-8 Fiber-optic Loopback Mode
Summary of Contents for SCRAMNet+ SC150e
Page 2: ......
Page 79: ...OPERATION Copyright 2007 5 29 SCRAMNet SC150e HARDWARE REFERENCE Figure 5 10 Quad Switch ...
Page 82: ......
Page 94: ......
Page 108: ......
Page 121: ...D D CONFIGURATION AIDS APPENDIX D CONFIGURATION AIDS ...
Page 122: ......
Page 127: ...1 GLOSSARY GLOSSARY ...
Page 128: ......
Page 135: ...1 INDEX INDEX ...
Page 136: ......