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USERS MANUAL 

For 

48710 and 48722  

Bi-Directional Amplifiers 

 

 
 
 
 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200 Pondview Drive, Meriden, CT 06450 

877 737-9675, Fax 203 821-3852, www.rfsamericas.com

 

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Содержание 48710

Страница 1: ...fiers 200 Pondview Drive Meriden CT 06450 877 737 9675 Fax 203 821 3852 www rfsamericas com C Co op py yr ri ig gh ht t 1 19 99 93 3 R Ra ad di io o F Fr re eq qu ue en nc cy y S Sy ys st te em ms s A...

Страница 2: ...of any proprietary rights of any persons Use or application of such information or statements is at the user s sole risk without any liability on the part of Radio Frequency Systems Nothing herein sha...

Страница 3: ...FC CC C a an nd d D DO OC C C Ce er rt ti if fi ic ca at ti io on n 2 2 Product Overview 3 Theory of Operation 3 Block Diagram 3 Electrical and Mechanical Specifications 4 Outline of Face Plate 4 Int...

Страница 4: ...a a p po or rt ts s E Ei it th he er r a a a an nt te en nn na a o or r a a 5 50 0 O Oh hm m l lo oa ad d r ra at te ed d f fo or r a at t l le ea as st t 1 1 w wa at tt t m mu us st t b be e c co on...

Страница 5: ...o on ns s a an nd d t tr ra an ns sm mi it tt te er rs s t th ha at t a ac cc co or rd di in ng g t to o t ta ab bl le e 1 1 C Ce el ll lu ul la ar r R Ra ad di io ot te el le ep ph ho on ne e S Se er...

Страница 6: ...n ni im mu um m s se ep pe er ra at ti io on n o of f 2 25 5 c cm m 1 10 0 i in nc ch he es s i is s r re eq qu ui ir re ed d t to o s st ta ay y w wi it th hi in n t th he e M MP PE E 1 1 0 05 5 x x...

Страница 7: ...ervice area connectors that determine the basic pass band and direct the RF signals to the proper gain path uplink and downlink respectively Both links have automatic gain control AGC in the power amp...

Страница 8: ...ov ve er rd dr ri iv ve e o or r o os sc ci il ll la at ti io on n N No o a at tt te en nu ua at ti io on n a an nd d r ro oo om m t te em mp pe er ra at tu ur re e M ME EC CH HA AN NI IC CA AL L E EN...

Страница 9: ...r of the signals is reduced the DC offset voltage will reduce level of attenuation In typical operation the AGC is only active when needed to prevent overdrive If the AGC is constantly activating it i...

Страница 10: ...wn will only occur if the AGC control limit is exceeeded for about a half second Power is then cut for 2 seconds After this time out power is brought back on line If the overload condition is still pr...

Страница 11: ...tem design Generally it is desired to minimize the amount of coax that has to be installed However in buildings with extensive obstructions it may be neccesary to install several service area antennas...

Страница 12: ...be working the mostly likely senario is a break in the donor or distribution networks First check both RF paths output via the DC voltages on Pins 12 and 13 or the RX DET V and Tx DET V from the PM70...

Страница 13: ...ld d b be e a av vo oi id de ed d C Ch he ec ck k d dr ri iv ve e l le ev ve el ls s a an nd d a an nt te en nn na a i is so ol la at ti io on n R Re ed du uc ce e m ma an nu ua al l g ga ai in n t t...

Страница 14: ...material is accepted for replacement or repair without written authority of the Seller Replacement or repair is made only after an examination at the Seller s plant shows defective material or workman...

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