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User Manual
10
14
LOF
Red
ON
: local optical interface receiving signal
Loss of Frame (LOF) alarm
Flickering
: remote optical interface receiving
signal LOF alarm
15
LOS
Red
ON
: local optical interface loss of receiving
signal alarm
Flicking
: remote optical interface loss of
receiving signal alarm
17
E-3
Red
ON
: the BER of local optical interface
receiving signal exceeds 1E-3
Flickering
: the BER of remote optical interface
receiving signal exceeds 1E-3
18
E-6
Yellow
ON
: the BER of local optical interface
receiving signal exceeds 1E-6
Flickering
: the BER of remote optical interface
receiving signal exceeds 1E-6
Indicators for the E1 interface
19
LOS
Red
E1 interface loss of receiving signal alarm
indicator
ON
: local E1 LOS alarm
Flickering
: remote E1 LOS alarm
OFF
: no LOS alarm at both local and remote
E1
3.4 Interface description
There is an optical interface and an E1 interface on the front panel of the device. The interfaces are
described in the table below:
Number Interface Interface
Type
Description
16 Optical
interface
SC
Local Fiber interface
20-22 E1
interface
BNC and
RJ-45
Local E1 interface.
Both 75
Ω
unbalanced E1 interface
(BNC) and 120
Ω
balanced E1 interface
(RJ-45) are provided.
