L-band 1:1 redundancy switch, accessory product for use only with comtech ef data cdm-625a, cdm-625, h64/h32/h16/h8 heights remote gateways, cdm-850, cdm-840, cdm-760, cdm-750, cdm-570al, cdm-570l, cdm-710gl, cdm-710, cdm-700, cdm-600l clm-9600l, and sdm- (176 pages)
L-band 1:1 redundancy switch accessory product for use only with comtech ef data cdm-625/a, cdm-840, cdm-750, cdm-760, cdm-570l, cdm-700, cdm-710, cdm-710g, cdm-600l (clm-9600l), and sdm-300l3 modems (148 pages)
1:1 redundancy switch, accessory product for use only with comtech ef data cdm-qx/qxl and slm-5650/5650a modems (modem firmware and hardware requirements apply) (194 pages)
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CRS-100 1:1 Redundancy Switch Operation Manual (Accessory Product for use only with Comtech EFData CDM-500/550/550T Modems) Part Number MN/CRS100.IOM Revision 2...
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Comtech EFData Documentation Update Subject: Change Part No. for AUX Cable Date: January 6, 2006 Document: CRS-100 1:1 Redundancy Switch Operation Manual, Revision 2, dated November 1, 2005 Part Number: MN/CRS100.EA2 Attach this page to page 2-3 Collating Instructions: Comments:...
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Quantity 4, Comtech EF Data P/N CA/BNC 50Ω ( 50Ω IF Cable) The CRS-100 is designed to work equally well with either 50 or 75 Ω systems, and Users should ensure that they order the correct IF cable sets when placing their order with the Factory.
4. To ensure that the product is not damaged during shipping, pack the product in its original shipping carton/packaging. 5. Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.) For more information regarding the warranty policies, see Warranty Policy, p. ix.
About this Manual This manual provides installation and operation information for the Comtech EF Data CRS-100 1:1 Redundancy Switch. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the CRS-100 1:1 Redundancy Switch.
Environmental The CRS-100 must not be operated in an environment where the unit is exposed to extremes of temperature outside the ambient range 0 to 50C (32 to 122F), precipitation,...
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Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic, commercial and light industrial environment. In order that the CRS-100 continues to comply with these standards, observe the following instructions: • Connections to the transmit and receive IF ports (BNC female connectors) should be made using a good quality coaxial cable - for example RG58/U (50 Ω) or...
Disclaimer Comtech EF Data has reviewed this manual thoroughly in order that it will be an easy-to- use guide to your equipment. All statements, technical information, and recommendations in this manual and in any guides or related documents are believed...
Chapter 1. INTRODUCTION The CRS-100 1:1 Redundancy Switch (Figure 1-1) is a companion product for use with Comtech EF Data CDM-500, CDM-550 or CDM-550T Modems. Its purpose is to continuously monitor a pair of modems (in a redundant configuration) so that, in the event of an equipment failure (or an undesired traffic condition), the unit will automatically switch data and IF signals from the failed unit to the Standby unit.
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Modems see identical Tx and Rx traffic signals all the time, which permits the CRS- 100 to continuously compare the fault status of both Modems. If the CRS-100 sees an identical fault on both Modems at the same time, it will infer that the fault condition exists in the external system, and eliminate an un-necessary switchover.
Be sure to keep all shipping materials for the carrier's inspection. If the unit needs to be returned to Comtech EF Data, please use the original shipping container. Mounting The CRS-100 is designed to be self-supporting at the rear of the two CDM-500/550/550T modems which it is connected to.
These two switches control the conditions which initiate an automatic switchover. Consult the following sections on how to set these switches. Connect External Cables Figure 2-1 shows how to connect a pair of modems together with the CRS-100. 2–2...
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It is essential to ensure that the IF connections, both Rx and Tx, are made correctly, i.e. the Tx IF from Unit ‘A’ connects to the Tx IF port ‘A’ on the CRS-100, and Unit ‘B’ to ‘B’, and the same for the Rx IF connections. Failure to observe this requirement will result in the system malfunctioning.
MN/CRS100.IOM CRS-100/CIC-50 Cabling Details Figure 2-2 shows how to connect the CIC-50 T1/E1 Interface Converter to the installation. Quantity 1, Comtech EF Data P/N CA/WR9680-1 (CIC-50 Adapter 25-pin M-F) Quantity 2, Comtech EF Data P/N AC18W01P01 (Power Supply Unit) 2–5...
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CA/BNC 50 OHM 25 PIN D MALE Receive IF Transmit IF COMTECH EFDATA PART # CA/WR9680-1 (CIC-50 ADAPTER) CRS-100 / CIC-50 CABLING DETAILS 12V DC 12V DC 25 PIN D FEMALE PSU #2 PSU #1 (OPTIONAL) COMTECH EFDATA PART #...
Chapter 3. PHYSICAL DESCRIPTION The CRS-100 is constructed as a free-standing module measuring 1.7H x 5.7W x 4.1D inches (4.3H x 14.5W x 10.4D cm), not including connectors. Front Panel On the front panel (Figure 3-1) of the unit is the main Data Interface connector, a 25 pin ‘D’...
On the side panel (Figure 3-1) to the right are the two Tx IF ports, ‘A’ and ‘B’, which are BNC female. Connection is made to the pair of Modems using Comtech EF Data P/N CA/BNC 75 OHM ( 75Ω applications) or Comtech EF Data P/N CA/BNC 50 OHM ( 50Ω...
On the side panel (Figure 3-1) to the left are the two Receive IF ports, ‘A’ and ‘B’, which are both BNC female. Connection is made to the pair of Modems using Comtech EF Data P/N CA/BNC 75 OHM ( 75 Ωapplications) or Comtech EF Data P/N CA/BNC 50 OHM ( 50 Ω...
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CRS-100 1:1 Redundancy Switch This page has been intentionally left blank. 3–4 MN/CRS100.IOM...
Chapter 4. FUNCTIONAL DESCRIPTION The CRS-100 connects to two modems, an Online unit, and a Standby unit, monitors the fault status of these two units, and controls the routing of data and IF signals to and from the two units. In the case of an equipment failure, switching automatically takes place to protect the traffic circuit.
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Functional Description CRS-100 1:1 Redundancy Switch hence lose approximately 3.5 dB in output power level) the CRS-100 does not introduce any attenuation of output signal level. The Rx IF signal is fed to both units simultaneously, using an internal power divider.
Chapter 5. CONNECTOR PINOUTS Table 5-1. Data Connector - 25 Pin ‘D’ Type Female EIA-422/ Circuit EIA 530 Generic Signal description Direction V.35 EIA-232 Shield Shield Transmit Data A DTE to Modem SD A SD A Receive Data A Modem to DTE RD A RD A Signal Ground...
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Connector Pinouts CRS-100 1:1 Redundancy Switch For correct operation of the CRS-100, the Modems must have the following Firmware versions installed: CDM-500 - Version 1.18 or later CDM-550 - Version 1.10 or later CDM-550T - Version 1.04 or later IMPORTANT If the modems do not meet this requirement, please contact the factory to arrange for a free upgrade to be sent to you.
Chapter 6. OPERATION AUTOMATIC OPERATION Having connected the cables in accordance with the instructions and diagram in Section 3.4, the User is now ready to put the system into operational use. Before proceeding, the User should check that the Auxiliary Serial link between the two units is functioning correctly.
On the bottom line, the screen should show that the 1:1 link is active. If it does not, then check that the cable is correctly installed before continuing. Comtech EF Data recommends that the User decide upon which condition is desired to initiate a switchover, and to correctly configure the two switches on the left side of the CRS-100.
‘ACTIVE’ and ‘MASKED’ is made. Comtech EF Data recommends that for most applications the CRS-100 should be configured to switch on Unit faults only. IMPORTANT The system, now configured, is ready to be put into service.
<XXXX/FSW=<CR> to the Online unit (where XXXX is the address of the Online unit) will force a switchover. This can be accomplished either by the User’s own software, or using Comtech EF Data’s own Monitor and Control Software package. If it becomes necessary to remove a Standby unit from the redundancy system, turn the power off before attempting to disconnect any of the cables.
Chapter 7. SUMMARY OF SPECIFICATIONS Equipment Type 1:1 Redundancy Switch Modems CDM-500, CDM-550 and CDM-550T Digital Satellite Modems Supported Operating Modes Fully automatic Manual (via the front panel of the Online Modem, or via the Modem’s remote control interface ) Architecture Full bridging architecture, with configuration synchronization Tx Clock and Data signals fed to both Online and Standby units...
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CRS-100 1:1 Redundancy Switch Revision 2 Summary Of Specifications MN-CRS100.IOM IF Frequency 52 - 176 MHZ range (works with both 70 and 140 MHZ Modem IF options) Weight 1.1 lbs (0.5 kg) Dimensions 1.7H x 5.7W x 4.1D inches (4.3H x 14.3W x 10.4D cm)
METRIC CONVERSIONS Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281 0.01094 6.214 x 10 0.01 — — 1 inch 2.540 — 0.08333 0.2778 1.578 x 10 0.254 — 25.4 1 foot 30.480 12.0 —...
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2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...