FUNCTIONAL OPERATION
RO
I-
S
044
88
2-
28
2
8
page
s
Table 2-3 Alarm Indication and Reporting
DETECTING
CIRCUIT
ALARM CONDITION
ALARM INITIATED
LED INDICATION
ON IDU
REMOTE ALARM
REPORT *1
INTFC
AIS signal is sent
AIS SEND
—
IDU*2
—
AIS (all logic “1”) is received
AIS RCVD
—
—
Input data stream is lost
INPUT LOSS
TX ALM ( )
IDU
TX ALM ( )
Transmitter clock is lost
TX CLK LOSS
TX ALM ( )
TX ALM ( )
Receiver clock is lost
RX CLK LOSS
RX ALM ( )
RX ALM ( )
Output data stream is lost
OUTPUT LOSS
RX ALM ( )
RX ALM ( )
Setting error of traffic channel assignment for usage
CHANNEL USAGE ERROR
TX ALM ( )
TX ALM ( )
SW BOARD
TX 1/2 CLK is lost
TX IN CLK LOSS1/2
TX ALM 1/2
TX ALM 1/2
RX1/2 CLK is lost
RX IN CLK LOSS1/2
RX ALM1/2
RX ALM 1/2
LAN INTFC
FE link down, selectable
FE LINK DOWN
LINK
LAN INTFC ALM
WS INTFC
Wayside input data stream is lost
WS INPUT LOSS
TX ALM ( )
IDU*3
TX ALM ( )
Wayside AIS is received
WS AIS RCVD
TX ALM ( )
TX ALM ( )
Wayside output data stream is lost
WS OUTPUT LOSS
RX ALM ( )
RX ALM ( )
Wayside AIS is transmitted
WS AIS SEND
RX ALM ( )
RX ALM ( )
WS INTFC
Wayside channel usage error, selectable
WS CHANNEL USAGE
TX ALM ( )
IDU
TX ALM ( )
DPU
Output data stream or master clock signal is lost at the DPU (TX) circuit
TX DPU ALM
TX ALM ( )
TX ALM ( )
MOD
VCO synchronization is lost at the MOD circuit
MOD ALM
TX ALM ( )
DEM
Carrier synchronization is lost
DEM ALM
RX ALM ( )
RX ALM ( )
IF input signal is lost
DEM ALM
RX ALM ( )
RX ALM ( )
DPU
Frame synchronization is lost at the DPU (RX)
F SYNC ALM
RX ALM ( )
RX ALM ( )
BER is worse than preset value (1
x
10
−
3
)
HIGH BER ALM
RX ALM ( )
RX ALM, ( ) BER ALM
BER is worse than preset value (1
x
10
−
6
)
LOW BER ALM
RX ALM ( )
RX ALM ( ), BER ALM
BER is worse than preset value (1
x
10
−
3
, 1
x
10
−
4
, 1
x
10
−
5
or 1
x
10
−
6
, selectable)
BER ALM
RX ALM ( )
RX ALM ( ), BER ALM
CPU communication error between IDU and ODU
OPR ALM
TX ALM ( )
RX ALM ( )
TX ALM( )
RX ALM ( )
ODU
Transmitter RF power decreases 3 dB from normal
TX PWR ALM
TX ALM ( )
ODU
TX ALM ( )
Receiver input level decreases from squelch level at ODU
RX LEV ALM
RX ALM ( )
RX ALM ( )
APC loop of local oscillator for transmitter or first local oscillator for receiver unlocks at ODU
APC 1 ALM
TX ALM ( )
RX ALM ( )
TX ALM ( )
RX ALM ( )
APC loop of second local oscillator for receiver unlocks at ODU
APC 2 ALM
TX ALM ( )
RX ALM ( )
TX ALM ( )
RX ALM ( )
IF signal from the IDU is lost at ODU
IF INPUT ALM
TX ALM ( )
TX ALM ( )
—
When the equipment is set to the Maintenance condition by PC.
MAINT ALM
MAINT
MAINT ALM
When the equipment is set to the following condition by PC.
•
FE loopback control condition
•
NE loopback control condition
•
MOD CW condition
•
MUTE (TX output power) condition
•
BER ALM >> AIS (off)
—
MAINT ( )
—
SW BOARD
OPR SEL No.1-No.2 switch is set to No.1 or No.2 position.
MAINT ALM
MAINT ( )
MAINT ALM
Summary of Contents for PASOLINK
Page 1: ...DIGITAL MICROWAVE RADIO SYSTEM PASOLINK Training Course ...
Page 16: ......
Page 17: ...B 1 1 IDU ...
Page 18: ......
Page 68: ...Pasolink Digital microwave radio system Installation guide ...
Page 81: ...NEC PASOLINK installation procedure January 2002 ...