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CRS-170 1:1 Redundancy Switch

Revision 1

Installation and Operations Manual

MN/CRS170.IOM

23

Chapter 3. FUNCTIONAL DESCRIPTION

The CRS-170 L Band 1:1 Switch module performs the transmit and receive coaxial
switching required for redundant modem operation with an outdoor BUC and LNB. It
switches all of the BUC and LNB interface signals that are multiplexed onto the transmit
and receive coaxial cables:

•

Tx and Rx L-Band signals

•

10 MHz reference to BUC and LNB

•

DC Power to BUC and LNB

•

FSK signaling to the BUC

Operation with two CDM-600L modems requires an additional CRS-150 1:1 switch for
terrestrial data switching and 1:1 control, while operation with two SDM-300L3 modems
requires an additional SMS-301 1:1 switch to handle terrestrial data and control. Thus,
there are three functional configurations for the CRS-170.

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Содержание CRS-170

Страница 1: ...Part Number MN CRS170 IOM Revision 1 CRS 170 1 1 Redundancy Switch Accessory Product for use only with Comtech EF Data CDM 600L and SDM 300L3 Modems Modem Firmware and Hardware Requirements Apply...

Страница 2: ......

Страница 3: ...Accessory Product for use only with Comtech EF Data CDM 600L and SDM 300L3 Modems Modem Firmware and Hardware Requirements Apply Part Number MN CRS170 IOM Revision 1 October 4 2004 Comtech EF Data is...

Страница 4: ...Number 480 333 4357 Customer Support Desk Fax 480 333 2161 To return a Comtech EF Data product in warranty and out of warranty for repair or replacement 1 Request a Return Material Authorization RMA n...

Страница 5: ...nd SMS 301 22 CHAPTER 3 FUNCTIONAL DESCRIPTION 23 3 1 Operation with CDM 600L and CRS 150 24 3 2 Operation with SDM 300L3 and SMS 301 25 CHAPTER 4 CONNECTOR PINOUTS 27 4 1 Modem Side Connectors 27 4 1...

Страница 6: ...DM 600L and CRS 150 21 Figure 3 Connection Diagram SDM 300L3 and SMS 301 22 Figure 4 Modem Side of Module 27 Figure 5 Antenna Side Connectors and Ground Lug 31 Tables Table 1 CRS 170 Application Summa...

Страница 7: ...AND REFERENCES CAUTIONS AND WARNINGS IMPORTANT Indicates information critical for proper equipment function WARNING Indicates a potentially hazardous situation that if not avoided could result in dea...

Страница 8: ...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 fo...

Страница 9: ...as a condition of manufacturing on all units to ensure compliance with safety requirements of EN60950 The equipment is rated for operation at 12 volts DC and 12 volts DC It has a maximum power consum...

Страница 10: ...ch vehicles do not provide a stable environment safety of the equipment to EN60950 may not be guaranteed TELECOMMUNICATIONS TERMINAL EQUIPMENT DIRECTIVE In accordance with the Telecommunications Termi...

Страница 11: ...eturn to Comtech EF Data No other warranty is expressed or implied Comtech EF Data specifically disclaims the implied warranties of merchantability and fitness for particular purpose EXCLUSIVE REMEDIE...

Страница 12: ...___ ________________________________________________________________________ ________________________________________________________________________ __________________________________________________...

Страница 13: ...and transmit RF 10 MHz BUC frequency reference 600 KHz BUC FSK control and status communication BUC DC power supply The receive side of the switch uses both power dividers and relays to provide the re...

Страница 14: ...er to the CRS 170 through the CRS 150 The SMS 301 itself has redundant power supplies and feeds power to the CRS 170 through the control cable Online standby modem configuration matching is provided b...

Страница 15: ...600L CRS 170 CRS 150 Firmware 1 1 4 or higher Hardware Rev 3 or higher SDM 300L3 CRS 170 SMS 301 L Band version of SMS 301 SNM 1001L CRS 170 SMS 301 L Band version of SMS 301 Refer to SDM 300L3 SNM 1...

Страница 16: ..._____________________________________________________________________ ______________________________________________________________________________ ___________________________________________________...

Страница 17: ...pping containers are damaged they should be kept until the contents of the shipment have been carefully inspected and checked for normal operation Remove the packing list from the outside of the shipp...

Страница 18: ...mall size and weight one installation option is to let the module hang freely supported by the interfacing cables Alternatively a rack mounting kit KT 10254 is available that allows the module to be m...

Страница 19: ...ble DB25 Male to Male 4 ft DB9 Male 1 ft 4 CA 6357 2 IF Coax Cable 50 length 2 feet IMPORTANT When connecting the Control cable between the CRS 170 and the modems ensure that screw locks on the D type...

Страница 20: ...CRS 170 Control DB15 Male to DB9 Male 4 ft 4 CA 6357 2 IF Coax Cable 50 length 2 feet Figure 3 Connection Diagram SDM 300L3 and SMS 301 IMPORTANT When connecting the Control cable between the CRS 170...

Страница 21: ...and LNB interface signals that are multiplexed onto the transmit and receive coaxial cables Tx and Rx L Band signals 10 MHz reference to BUC and LNB DC Power to BUC and LNB FSK signaling to the BUC O...

Страница 22: ...olts DC at a combined total of 120 mA max Maximum power consumption occurs in a serial LVDS mode at maximum data rate 20 Mbps Power consumption in EIA 232 modes is approximately 40 of the maximum valu...

Страница 23: ...s are removed since the connectors and internal switching are not suitable for L Band operation Signals on the Status Faults connector J14 are modified to provide 12VDC power output and A B switch con...

Страница 24: ..._______________________________________ ________________________________________________________________________ ________________________________________________________________________ ______________...

Страница 25: ...SDM 300L3 SMS 301 Name Ref Des Connector Type Function RX A J1 Type N RF Input to Modem A RX B J2 Type N RF Input to Modem B TX A J5 Type N RF Output from Modem A TX B J6 Type N RF Output from Modem...

Страница 26: ...6 7 and 8 loop the same signals from Modem A through to Modem B The 12VDC input which is diode OR ed with the corresponding 12VDC input from modem B powers the switch module Table 2 J3A Modem A Contro...

Страница 27: ...6 7 and 8 loop the same signals from Modem B through to Modem A The 12VDC input which is diode OR ed with the corresponding 12VDC input from modem A powers the switch module Table 3 J3B Modem B Contro...

Страница 28: ...he L Band Switch Module Refer to Table 4 for details Table 4 Modem Side Type N Connectors Type N Connector Reference Description Direction RX A J1 RX IF signal LNB 10 MHz Ref LNB Power Out In In RX B...

Страница 29: ...de of the CRS 170 L Band Switch Module provide the coaxial cable connections to the outdoor transmit and receive equipment BUC and LNB Refer to Figure 5 Type N Connector Reference Function Direction R...

Страница 30: ..._______________________________________ ________________________________________________________________________ ________________________________________________________________________ ______________...

Страница 31: ...signal fed to both Online and Standby units Rx switching supports all LNB interface signals RF 10 MHz reference and power supply Switch Conditions Tx Rx switching follows state of supporting data swi...

Страница 32: ...0 8kg Dimensions 1 75 H x 8 2 W x 5 3 inches 44 5H x 208 2W x 134 6 D mm excluding connectors 19 inch rack mounting kit available Power requirements 1 5 Watts maximum 12 volts DC 120 mA max Power sup...

Страница 33: ...103 1 609 x 103 1 609 1 mm 0 03937 1 kilometer 0 621 Temperature Conversions Units of Weight Unit Gram Ounce Avoirdupois Ounce Troy Pound Avoir Pound Troy Kilogram 1 gram 0 03527 0 03215 0 002205 0 0...

Страница 34: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...

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