User`s guide

ConÞguring the DL600E Unit 3-27
CRC4 Threshold AlarmÑ(Cyclic Redundancy Check) A x 10 ^ B
(DefaultÑDisabled)
Set A and B in A x 10 ^ B. Maximum threshold is 1; minimum threshold is
1.7 x 10
-5
. Example: 1.2 x 10
-2
The alarm is generated when the CRC4s exceed the threshold.
FE Threshold Alarm (Frame Error Event) ÑA x 10 ^ B
(DefaultÑDisabled)
Appears in the menu only when the remote unit is a DL600E unit and
applies only to it. Set
A and B in A x 10 ^ B. Maximum threshold is 7.5 x
10
-2
; minimum threshold is 2.1 x 10
-6
. Example:
4 x 10
-4
The alarm is generated when the FEs exceed the threshold.
Alarm Conditions and System Action
Table 4-2 lists the alarm conditions and the DL600E unit action.
In the example in Figure
3-7, the remote unit can be a DL600E1 or a
DL600E unit.
Table 4-2 DL600E Alarm Conditions and System Action
Condition Action
Loss of data port DL600E unit sends a Framed All Ones to E1
network.
Loss of Signal appears in DATA DTE Status,
Menu-1 Main Status
Loss of Signal or Loss of
Frame on network and AUX E1
ports
DL600E unit sends a Remote Alarm Indication
signal to network port, drops RLSD line on
data port.
Loss of Signal or Loss of Frame appears in
Network Status
, Menu-1 Main Status
Remote Alarm Indication
from network AUX E1 ports
RAI Received appears in Network Status,
Menu-1 Main Status
Unframed All Ones on
Network AUX E1 ports
DL600E unit sends a Remote Alarm Indication
signal to network port, drops RLSD line on
data port.
UA1 Received appears in Network Status,
Menu-1 Main Status.