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4

StarBand

®

Field Service & Maintenance Bulletins

StarBand

®

Field Service & Maintenance Bulletins

©2004-2013,

75E Antenna Torque Specs — SB-0014-1.00

Symptom

Upon inspection, locking bolts on 75E antenna have been found loose in

some cases.

Possible Cause

Locking bolts for skew, elevation, and/or azimuth are not tightened

to proper torque specification.

Recommended Action

When installing the StarBand

®

75E antenna, please insure

that the adjustment locking bolts are tightened to the correct torque specification,
after completing installation. A torque wrench is needed. Use the following torque
specifications when tightening bolts:

—

Skew Locking Bolts (4): 8 Ft-lbs.

—

Elevation Locking and Pivot Bolts (2 ea.): 12 Ft-lbs.

—

Azimuth Clamp Bolts (3): 12 Ft-lbs.

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Содержание 75E

Страница 1: ...2004 2013 MobileInternetSatellite com StarBand Field Service Maintenance Bulletins 1 StarBand Field Service Maintenance Bulletins September 15 2013...

Страница 2: ...resolution Many of the FSBs contain useful troubleshooting information The Maintenance Bulletin MB outlines procedures for replacement of specific VSAT components Field Service Bulletins FSBs FSBs wh...

Страница 3: ...lite and peaked the dish Field Service Bulletin FSB Subject Reference Number Last Updated Included AMD Processor USB conflicts Model 180 SB 0011 1 00 05 03 01 NA 75E Antenna Elevation Correction SB 00...

Страница 4: ...ew elevation and or azimuth are not tightened to proper torque specification Recommended Action When installing the StarBand 75E antenna please insure that the adjustment locking bolts are tightened t...

Страница 5: ...ck or they may be absent altogether The antenna should be peaked and the desired transmit polarization confirmed Weak signals could indicate the antenna is not pointed to the right satellite but could...

Страница 6: ...ellite and transponder Then confirm the H or V on the polarizer is pointed to 0 All skew elevation and azimuth bolts are securely fastened and the feed support arm is mounted properly to the antenna T...

Страница 7: ...all into the LNB waveguide cavity Step 3 Reattach the LNB to the OMT assembly taking care to insure the rubber O ring stays in place See the right side of the previous figure Step 4 Re check the Signa...

Страница 8: ...r The ODU is powered from the IDU via a DC power supply coupled on the coaxial RF output connector that is connected to the transmit IFL cable Symptom The VSAT has receive lock but it cannot connect w...

Страница 9: ...Perform a physical inspection of the ODU transmit IFL feed OMT assembly and antenna to verify there is no physical damage Verify the transmit IFL is functional and within the specified maximum length...

Страница 10: ...te modem in its normal configuration Call CVACS and select the option to request a co pol and cross pol check of the VSAT Possible results and what each indicates are as follows If both co pol and cro...

Страница 11: ...and 75E antennas in the continental US CONUS Recommended Action Follow this procedure to help locate the assigned satellite set the polarization and peak the antenna for optimal link performance Step...

Страница 12: ...44HWN the transmit reject filter TRF should be removed as this LNB has an internal TRF Regardless of the LNB model remove the four screws from the LNB waveguide input Check the LNB for a white sticker...

Страница 13: ...the LNB Caution Due to the potential for interference caused by VSAT transmissions the 75E antenna must be peaked using the satellite providing StarBand service Failure to do so can cause misalignment...

Страница 14: ...is peaked on the correct satellite Connect the receive IFL cable from the LNB to the RF In port on the satellite modem Also connect the PC to the modem For installations with Model 360 satellite mode...

Страница 15: ...ove the specified minimum take the following action While listening to the CVACS cross pol readings from the Antenna Alignment submenu make small adjustments to the skew angle until CVACS reports a mi...

Страница 16: ...t is when the center conductor is in contact with the outer conductor shorted Both an open and short circuit will disable the IFL A kinked cable is one that has been bent in too tight a turn which can...

Страница 17: ...on point on the equipment Coaxial grounding blocks are no longer required for StarBand installations unless required by local codes However the antenna structure must be grounded in accordance with Na...

Страница 18: ...the satellite modem care must be taken not to short the center conductor to the outer conductor as this will not provide an accurate DC voltage measurement and can potentially damage the satellite mo...

Страница 19: ...enter conductor and the black probe on the outer shell of the coaxial adapter The DC voltage reading should nominally be between 22 and 24 V DC After checking this voltage remove the coaxial adapter a...

Страница 20: ...e an audible tone if the probes are shorted It is suggested that you use this setting if it is available At one end of the IFL cable install a jumper from the center conductor to the outer conductor s...

Страница 21: ...ollect inside the feed OMT assembly the transmit reject filter if installed see FSB SB 0016 the ODU and or the LNB Recommended Action Occasionally the StarBand antenna receive and or transmit signals...

Страница 22: ...physical damage such as a bent feed arm or a cracked waveguide the damaged component must be replaced Inspection for Moisture Check the feedhorn cover for the presence of water or condensation build u...

Страница 23: ...nternal local oscillator LO that leak signals in the KU Band 11 7 12 2 GHz which is used by the StarBand VSAT to receive outbound transmissions Since the signals from the distant satellite are relativ...

Страница 24: ...cause interference radar detectors must be powered on and near the VSAT antenna with a clear line of sight At the VSAT antenna look around in all directions to see if there are vehicles present in th...

Страница 25: ...n reduce download speeds The minimum acceptable outbound performance values differ depending on the version of Mission Control and the platform used Most properly installed systems will be able to ach...

Страница 26: ...in CVACS as Cluster 10 AMC4 assignments will be reported as Cluster 20 The actual assignment for IA7 is Cluster 2 and for AMC4 it is Cluster 4 When configuring the 480 Pro satellite modem Cluster 2 or...

Страница 27: ...Finish Later Selecting this option will terminate the installer s call to CVACS by disconnecting the phone connection This is the correct way to exit CVACS Maintenance Bulletins MBs The Maintenance Bu...

Страница 28: ...28 StarBand Field Service Maintenance Bulletins StarBand Field Service Maintenance Bulletins 2004 2013...

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