Axcera 79XITS-7045 Manual Do Utilizador
WaveCom Electronics Inc
MA4040D Manual; MAN1L0901 REV 13(0104)
Approved: D.P.
20
3.9 Procedure for Using the MA4040D Redundancy Feature
D
D
I A G R A M
I A G R A M
3.9: R
3.9: R
E D U N D A N C Y
E D U N D A N C Y
PP
A I R S
A I R S
1. One-to-One redundancy works on the MA4040D modules in pairs. The available MA4040D pairs are A/B, C/D, E/F, G/H, I/J
only. Any combination of one or more pairs can be configured for redundancy at any time.
2. In order to configure a module pair for redundancy, the following steps should be taken:
•
Disable redundant mode on both modules in the pair to be configured. This is accomplished by sending the Redundant
Mode Disable ‘BD’ command to either one of the modules in the pair or by selecting Redundant Off from the front panel.
Mode Disable ‘BD’ command to either one of the modules in the pair or by selecting Redundant Off from the front panel.
•
Connect the IF input cables.
•
Configure both modules in the pair for the desired frequencies and levels etc.
•
Enable redundant mode by sending the Redundant Mode Enable ‘BE’ command to either one of the modules in the pair or
by selecting Redundant ON from the front panel.
by selecting Redundant ON from the front panel.
•
Enable IF AGC by sending the IF AGC Enable ‘IAE’ command to both modules or by selecting IF AGC Enabled from the
front panel.
front panel.
3. When configuring Module pairs for redundancy, send the Redundant Mode Enable ‘BE’ command to the desired active
module or select Redundant ON from the front of the module that is to be the active output module. The second module in
the pair automatically becomes the back-up (RF disabled).
the pair automatically becomes the back-up (RF disabled).
4. Once the modules have been set up for redundancy mode, to switch the active module send the Redundant Mode Enable
‘BE’ command to the desired active module or select Redundant ON from the front of the module that is to be the active
output module. The second module in the pair automatically becomes the back-up (RF disabled).
output module. The second module in the pair automatically becomes the back-up (RF disabled).
5. Sending the Redundant Mode Disable ‘BD’ command to either one of the modules in the pair or by selecting Redundant
OFF from the front panel will disable redundancy on both modules in the pair.
6. In the event of a failure of the Active Module, it will disable its RF output and notify the Backup Module to become Active.
When notified, the Backup Module will enable its RF output. This 'fail-over' will take less than 50 ms. It is then possible to
determine what caused the failure using the failed Module Alarm LEDs and the corresponding front panel error code.
determine what caused the failure using the failed Module Alarm LEDs and the corresponding front panel error code.
7. Once an alarm condition has occurred on a module that has the redundant mode enabled, the alarm will be locked on. In
this state, the alarm must be manually cleared by replacing the card, or disabling and then re-enabling the redundant mode.
It is possible to tell when the alarms have been 'locked' from the front panel display. When redundancy is OFF, the front
panel will read, Redundant Off. When redundancy is on, the front panel will read "Redundant On". When alarms have
been locked, the front panel will read "RdndntOn/AlrmLck".
It is possible to tell when the alarms have been 'locked' from the front panel display. When redundancy is OFF, the front
panel will read, Redundant Off. When redundancy is on, the front panel will read "Redundant On". When alarms have
been locked, the front panel will read "RdndntOn/AlrmLck".
8. In the event that a Redundant Pair switches to the Backup Module, the failed (formerly Active) Module is disabled. This
module will remain disabled until it is either swapped for a new module, or it is reconfigured by a user. In order to configure
a replacement module in a redundant pair, the following steps should be taken:
a replacement module in a redundant pair, the following steps should be taken:
a) Disable Redundant Mode for either of the modules in the pair ( this disables redundant mode for both cards).
b) If you have replaced the failed module connect the IF input cable .
c) Configure the module for the desired frequency and levels, etc.
d) Enable redundant mode on the module you wish to be the active (Output Enabled), the other module in the pair
automatically becomes the backup (Output disabled).
*
One-for-One Redundancy can only be used in pairs of MA4040D cards. It is not compatible with A, B, or C
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
RF OUT
RF MON
IF IN
UPCONVERTER
WaveCom
MA4040D
MA4040D
-20dB
REMOTE
INTERFACE
MADE IN
CANADA
CANADA
Optional Redundant
PS4011D Power
Supply
100-240VAC
4A MAX.
50-60Hz
FUSE
10A, 250V
PS4011D
K J I H G F E D C B A