Comtech-ef-data MCED-100 User Manual download pdf (Page 41)

MCED-100 MetaCarrier Embedding Device Revision 1

Rear Panel Connectors and Pinouts MN-MCED100

3–5

3.3 IF Connections

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THERE MAY BE DC VOLTAGES PRESENT ON THE TYPE ‘N’ TX IF CONNECTORS, UP

TOA MAXIMUM OF 48VOLTS,IF THEUPLINK MODEMHAS BUCPOWER SUPPLY

OUTPUT.

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3.3.1 Tx (OUT) Connectors

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3.3.2 Rx (IN) Connectors

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Rx(OUT)L‐BandConnector Notes:

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1. ReturnlossontheL‐Bandportsistypically betterthan14dB.

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2. If connection to an L‐Band 75Ω system is require d,  a Type ‘N’ to Type ‘F’ adapter can be

usedandisavailablefromComtechEFDataasanoptionalacces

sory.Whileareductionin

returnlosswilloccurwhenadaptingfrom50Ωto75Ωoperation,theeffectinmostsystems

willbeimperceptible.

3.4 GPS INPUT Connections

TheMCED‐100providesuserstheabilitytoinsertGPSlocationdataintotheCarrierIDmessage

string.TheGPSlocationdataisformattedintheGLL(Geograp hicPositionLatitude/Longitude)

subsetoftheNMEA0183Protocol.ThisdatacanbegeneratedeitherbytheMCED‐100internal

GPSreceiver(usinganexternalactiveGPSantenna),anexternalGPSuni

t(connectedviaEIA‐

232),orbymanualusercontrol.

ItisrecommendedthatoutputbytheexternalGPSofanymessagesotherthan

NMEA0183Protocol‐standar dmessagesbedisabled.



Tx Connector Name Connector Type Description Direction

Tx (OUT) | 70-140MHz BNC 75 Female Tx IF Signal, 70/140 MHz

Out

Tx (OUT) | L-BAND Type ‘N’ 50 Female Tx IF Signal, L-Band

Rx Connector Name Connector Type Description Direction

Rx (IN) | L-BAND Type ‘N’ 50 Female Rx IF Signal, L-Band

Rx (IN) | 70-140 MHz BNC 75 Female Rx IF Signal, 70/140 MHz

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Comtech-ef-data MCED-100 User Manual Page 41