System Loopback - Alcatel-Lucent MDR-8000 User Manual

ETH TX
SW
CMD
PHY
ETH RX
ETH
EQUIP
LPBK
DS1 LINE INTFC
SW
CMD
RC3 Equipment Loopback
6.11.3.2
RC3 equipment loopback is a local loopback function that can be used to test the per-
formance of a standalone radio. RC3 Equipment loopback is enabled by selecting
under
RC3 Equipment
tion loops the Eth RCV /radio XMT (Eth R/RT ) input back into the Eth XMT /radio RCV
(Eth T/RR ) output. The actual loopback occurs in the ETHRA FPGA on the I/O inter-
face. When enabled, the radio XMT (RT) output is switched through the MUX in the
ETHRA , replacing the radio RC (RR) input. The radio XMT (RT) output also continues
to the XMTR RT output.
6 - 20
MAC FIFO
SW
CMD
WS DS1 LINE 1
2
3
4
4
3
2
WS DS1 LINE 1
Figure 6 - 18 Ethernet Loopbacks

SYSTEM LOOPBACK

ETHRA FPGA
RADIO
GFP
FRAME
MULDEM
ETH
FACILITY
LPBK
TI/DS1
SW
CMD
FRAMING
on the USI Control screen. This func-
ETH RC3 LPBK
(DATA + OH + WSDS1)
SW
CMD
ETH-1046
01/25/06
A