RCS11
1:1 Redundancy Switch
Modem Accessories
Overview
The RCS11 1:1 Redundancy Switch provides simple backup redundancy protection for all configurations of DMD15, DMD20, DMD50 and
DMD2050 SCPC modems and the DM240 / DD240 DVB series of Digital Video Modulators and Demodulators. The backup functions of
the RCS11 may be performed automatically, manually or from Terminal Mode.
Operating in the automatic mode, the RCS11 immediately places a non-faulted backup modem online in the event of a primary online
modem failure. In the manual mode, the user may designate the selected online primary modem either from the interactive front panel or
a remote terminal interface.
Features
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1:1 Redundancy Protection for DMD15, DMD20, DMD50, DMD2050, DM240 & DD240 Series
Automatic or manual modes of operation
Self-contained dual redundant power supplies
Manual operation from front panel or remote control
Independent (mod/demod) or coupled (modem) backup capability
IF options – 70/140 MHz or L-Band
Supports 10/100Base-T Ethernet switching
Redundant Power Supplies
For maximum reliability, the RCS11 is equipped with two fully-redundant internal power supplies. Each power supply is fully independent
of the other, including their source of AC or DC power and fusing. The RCS11 remains fully-operational as long as either power supply is
providing a source of power.
Front Panel Controls
The front panel of the RCS11 provides all of the necessary controls and LED indicators to provide the operator with online and backup
status of the online and backup modulators and demodulators.
Power-Up Defaults
During power-up, the RCS11 initializes itself to the last mode set by the front panel push buttons. For example, if the operator desires
the RCS11 to operate in the Auto Mode, with both Mod and Demod set to Modem B, the operator places the RCS11 into this condition
using the front panel pushbuttons and the RCS11 stores this configuration into nonvolatile memory. If the power source was then to fail
and be restored, the RCS11 would again power-up in the Auto Mode with both Mod and Demod set to Modem B.
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Specifications
Published specifications reflect all options available with the RCS11. Each RCS11 can be configured to customer requirements via
hardware / software options applied at the factory or in the field.
General
Modes of Operation
Configurations
Modulator Switch Time
Demodulator Switch Time
Modulator Switch Delay Time
Demodulator Switch Delay
Time
IF Switching
Auto, manual, remote
Modem, mod only, demod only
50 msec maximum
50 msec maximum + demod
lock time
40 msec
1 second
70/140 MHz: BNC (F) 75 Ohm
standard (50 Ohm optional)
L-Band: SMA (F) All L-Band
products
Type-F (F) DD240
Monitor and Control
All operating parameters can be monitored and controlled via
the front panel display/keypad or the RS-485 or RS-232 serial
control channel in either terminal or remote modes. The
following modem parameters may be controlled and/or
monitored:
Mode, mod/demod/modem, power
Parameters Monitored supply status, internal switch settings,
software
Mode, mod/demod/modem,
Parameters Controlled auto/manual,
select A, select B
Front Panel LED Indicators
Power supply 1
Power supply 2
Unit
Switch fault
Auto
Manual
Online A/B
Demodulator
Fault A/B
Online A/B
Modulator
Fault A/B
Front Panel Controls
Enable
Select auto
Mod select A
Mod select B
Demod select A
Demod select B
Terrestrial Interfaces
Universal: RS-449/ V.35/RS-232/G.703/IDR & IBS
DMD15
alarms/drop & insert
Synch:ASI or ASI with offline IF Monitor or
RS-530
DM240XR Universal: M2P, DVB (RS-422 or LVDS) or ASI
Universal: HSSI
Ethernet: 100/1000Base-T
Synch: ASI
Universal: ASI
Universal: M2P, DVB (RS-422 or LVDS)
DD240XR
G.703, HSSI,
Ethernet: 100/1000Base-T
Synch: RS-530/ V.35/RS-232
Universal: RS-530/ V.35/RS-232/G.703/
DMD20
IDR & IBS Alarms/Drop & Insert, ASI/Parallel,HSSI
Ethernet: 10/100Base-T/RS-530
Synch: RS-530/ V.35/RS-232,
Universal: RS-530/V.35/RS-232/G.703/IDR & IBS
alarms/drop & insert
G703 (T3, E3, STS1)
DMD50
ASI
HSSI
Ethernet: 10/100Base-T/RS-530
Synch: RS-530/ V.35/RS-232,
Universal: RS-530/V.35/RS-232/G.703/IDR & IBS
alarms/drop & insert
DMD2050
G703 (T3, E3, STS1)
ASI
HSSI
Ethernet: 100/1000Base-T/RS-530
Physical, Power & Environmental
Short Chassis
1.75” x 19” x 16.5”
Dimension
(4.45 x 48.26 x 41.91 cm)
(height x width x depth)
Weight
12 lbs (5.4 kg)
Long Chassis
1.75” x 19” x 21”
Dimensions
(4.45 x 48.26 x 55.24 cm)
(height x width x depth)
Weight
12 lbs (5.4 kg)
100 to 240 VAC, 50 to 60 Hz,
Prime Power
40 W
0 to 50°C, 95% humidity, nonOperating Temperature
condensing
-20 to 70°C, 99% humidity, nonStorage Temperature
condensing
Options – Cable Sets
DMD15
DMD2050
DMD20
DD240XR
DMD50
DM240XR
2114 West 7th Street, Tempe, Arizona 85281 USA
Voice: +1.480.333.2200 ● Fax: +1.480.333.2540 ● Email: sales@comtechefdata.com
See all of Comtech EF Data’s Patents and Patents Pending at http://patents.comtechefdata.com
Comtech EF Data reserves the right to change specifications of products described in this document at any time without notice and without obligation to notify any person of such changes. Information in this
document may differ from that published in other Comtech EF Data documents. Refer to the website or contact Customer Service for the latest released product information.
© 2012 Comtech EF Data
ds-rcs11.docx
2/15/2012