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Comtech
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CRS-100 1:1
Redundancy Switch is a companion product for use with
Comtech EFData CDM-500, CDM-550 or CDM-550T modems. Its
purpose is to continuously
monitor a pair of modems in a redundant configuration,
so that the unit automatically switches data and IF
signals from the failed unit to the standby unit if an
equipment failure or undesired traffic condition occur.
In this manner, traffic paths are fully protected, and
the system operator can have increased confidence that
equipment failures will not adversely affect system
availability. |
Data Sheet |
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CRS-150 1:1
Redundancy Switch is a companion product for use with
Comtech EFData CDM-600 modems. Designed to continuously
monitor a pair of modems in a
redundant configuration, it automatically switches data
and IF signals from a failed unit to the standby unit,
if an equipment failure or undesired traffic condition
occurs.
With the CRS-150, traffic paths are fully protected,
giving our users increased confidence that equipment
failures will not adversely affect system availability.
The CRS-150 provides full protection for all Open
Network overhead signals (IDR Backward Alarms, Overhead
data channels, Audio, etc.), as well as external
reference
signals. |
Data Sheet |
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CRS-170 1:1
Redundancy Switch is a companion product used with
Comtech EF Data L-Band modems: CDM-570L, CDM-600L and
CRS-150, SDM-300L3 and SMS-301, SNM-1001L and SMS-301,
SLM-3650L and SMS-301. The 1:1 switching assures fully
protected data and signal paths and provides increased
confidence that equipment failures will not adversely
affect system availability. A block
diagram illustrates the basic connection for the CDM-570
and the SDM-300L3 modems. |
Data Sheet |
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CRS-200 1:10 modem
redundancy switch provides fully automatic or manual
redundancy of CDM-550 satellite modems.
The protection system consists of a maximum of 10
traffic modems, a redundant modem, and the CRS-200
redundancy switch. A CRS-280 IF switch is available if
multiple satellite transponders are used.
The CRS-200 supports interface types of EIA-422, V.35,
EIA-232, and G.703*, offering users the flexibility of
mixing data interface types within the same redundancy
group. |
Data
Sheet |
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CRS-280L 1:N
Redundancy Switch is a companion product used with
Comtech EF Data L-Band modems and redundancy switches:
CDM-570L and CRS-300, CDM-600L and CRS-300, SDM-300L3
and SMS-7000, SLM-3650L and SMS-7000
When combined with the applicable data switch, the
CRS-280L fully protects L-Band signal paths and
increases the confidence that equipment failures will
not adversely
affect system availability. A block diagram illustrates
the 1:N architecture. |
Data Sheet |
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CRS-300 1:10 modem
redundancy switch provides fully automatic or manual
redundancy of CDM-600 satellite modems. The protection
system consists of a maximum of 10 traffic modems, a
redundant modem, and the CRS-300 redundancy switch. A
CRS-280 IF switch is available if multiple satellite
transponders are used. A CRS-350 ESC switch is available
for open network ESC redundancy switching. |
Data Sheet |
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CRS-400 1:8 Modem
Redundancy Switch provides fully automatic redundancy of
traffic circuits for the SDM-2020 Modulators and
Demodulators. The data interface currently
supported is HSSI. Other features include: 1 backup
modulator, demodulator, or both. Up to 8 traffic
modulators or demodulators. Optional HSSI and IF cables.
RS-485 remote communication cables to each modulator or
demodulator, Optional: CRS-280L 1:N Redundant switch
(70/140 MHz IF). Independent or dependent operation |
Data Sheet |
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SMS-301 is a fully
programmable 1:1 protection switch providing complete
redundancy for one prime and one backup modem. The
SMS-301 switch is designed to operate with Comtech
EFData satellite modems and is a direct replacement for
the SMS-651B 70/140 MHz switch. Programming the SMS-301
is accomplished through the front panel keyboard or the
remote interface. Complete functionality control and
monitoring of switch status and faults are easily
accessed through the remote port connection. |
Data Sheet |
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SMS-451 is an
automated 1:1 protection switch for high data rate
SDM-2020 and SDM-9000 satellite modems. The SMS-451
simultaneously switches data and IF. The switch can be
ordered with either independent or dependent switching
of modulator and demodulator. If a fault is detected in
the online modulator or demodulator, a switch to the
offline modem will occur. The switching will only occur
if the backup is not in a faulted condition. |
Data Sheet |
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SMS-458B 1:N high
data rate modem protection switch provides automatic
redundancy for the Comtech EFData SDM-9000 modems. The
SMS-458B switch provides automatic redundancy protection
for up to four online modems with one backup
modem. The SMS-451A protection switch is a related
product, providing 1:1 high rate modem protection. The
SMS-458B directly switches the IF output of the backup
modem to replace the IF output of any of the prime
modems (up to four). The backup demodulator may be
switched to receive any one of four down converters. A
low
loss-combining network can be used for a specific number
of transponders. |
Data Sheet |
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SMS-7000 The SMS-7000
features: Universal Data Interfaces Available at the
Switch, Programmable Independent/Dependent Switch Modes,
Programmable Modem Priority, Programmable Switching
Delay, Remote Monitor and Control (M&C), Optimized
Customer IF Configuration and High-Speed Remote Control.
Comtech EFData’s SMS-7000 M:Nprotection switch utilizes
fewer cables and occupies less rack space than the
previous generation of M:N switches. The SMS-7000 is
designed to allow maximum flexibility by incorporating a
Universal Terrestrial / User interface. |
Data Sheet |
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