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  5. Operating Instructions & Parts List Manual

BIRD THRULINE 4450 Operating Instructions & Parts List Manual

Manual is about: WATTMETER

Summary of THRULINE 4450

  • Page 1

    In struc tion book op er ating in struc tions with parts list model 4450 thruline ® wattmeter.

  • Page 2

    Limited war ranty all prod ucts man u fac tured by seller are war ranted to be free from de fects in ma te rial and work man ship for a pe riod of one (1) year, un less oth er wise spec i fied, from date of ship ment and to con form to ap pli ca ble spec i fi ca tions, draw ings, blue prints and/or ...

  • Page 3: Model 4450

    In struc tion book op er ating in struc tions with parts list model 4450 thruline ® wattmeter © copy right 1994 by bird elec tronic cor po ra tion in struc tion book part num ber 920-4450-1 rev.B thruline® is a reg is tered trade mark of bird elec tronic cor po ra tion.

  • Page 5

    Safety pre cau tions safety pre cau tions the fol low ing are gen eral safety pre cau tions that are not nec es sar ily re lated to any spe cific part or pro ce dure and do not nec - es sar ily ap pear else where in this pub li ca tion. These pre cau tions must be thor oughly un der stood and ap ply...

  • Page 6

    Model 4450 thruline wattmeter cau tion state ments the fol low ing equip ment cau tions ap pear in the text and are re peated here for em pha sis. Cau tion do not drop the thruline wattmeter equip ment or sub mit it to hard blows. The volt me ter cir cuitry or microammeter, even though it is shock m...

  • Page 7

    About this man ual about this man ual this in struc tion book cov ers the model 4450 thruline wattmeter this in struc tion book is ar ranged so that es sen tial in for ma tion on safety is con tained in the front of the book. Read ing the safety pre cau tions sec tion be fore op er at ing the equip ...

  • Page 8

    Iv.

  • Page 9

    Ta ble of con tents safety pre cau tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . I model 4450 thruline wattmeter warn ing state ments . . . . . . . . . . . . . I model 4450 thruline wattmeter cau tion state ments . . . . . . . . . . . . . . Ii about this man ual . . . . . . . . . . ....

  • Page 10

    List of fig ures out line draw ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 schematic di a gram . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 zero ad just ment screw . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 vswr con ver sion mono graph . . . . . . . . ...

  • Page 11

    Chap ter 1 in tro duc tion purpose and function the model 4450 thruline wattmeter is an in ser tion-type rf wattmeter de signed to mea sure rf power flow and load match in 50 ohm rf co ax ial trans mis sion lines. Its pri mary in tended use is for the test and eval u a tion of power line car rier eq...

  • Page 12

    Spec i fi ca tions im ped ance 50 ohms nom i nal power range 5/25/100 watts in ser tion vswr 1.10 max i mum con nec tors bird qc type, fe male n nor mally sup - plied tem per a ture range op er ating stor age +5°c to +45°c (41°f to 113°f) -10°c to +45°c (14°f to 113°f) ac cu racy* (from 5°c to 45°c)...

  • Page 13

    Sche matic di a gram - 1-3.

  • Page 14

    Bird model 4450 thruline wattmeter 1-4.

  • Page 15

    Chap ter 2 the ory of op er a tion traveling wave concept the op er a tion of the model 4450 wattmeter is based on the trav el ing wave con cept of rf trans - mis sion. As rf power is ap plied to a trans mis sion line, there is a for ward wave trav el ing from the trans mit ter to the load, and a re...

  • Page 16

    Will be in di cated on the microammeter as the power op po site to the for ward power, or re flected power. Bird model 4450 thruline wattmeter 2-2.

  • Page 17

    Chap ter 3 in stal la tion portability the model 4450 thruline wattmeter is a por ta ble unit and the hous ing is not de signed for fixed mount ing. A leather strap han dle is pro vided on the unit for car ry ing pur poses. When trans - port ing the model 4450 turn the range switch to the off po si ...

  • Page 18

    Bird model 4450 thruline wattmeter 3-2.

  • Page 19

    Chap ter 4 op er ating in struc tions the ap par ent fea tures of the thruline equip ment have been dis cussed in the pre ced ing sec tions. As pre vi ously men tioned, no bat ter ies or ex ter nal power source is re quired to op er ate the wattmeter. A suf fi cient amount of power is taken from the...

  • Page 20

    Vswr calculations af ter ob tain ing the for ward and re flected power read ings de scribed above, the vswr may be found by cal cu la tion as de scribed on page 2-1 traveling wave vs. Stand ing wave. Con ver sion nomographs to sim plify de ter min ing vswr are pro vided be low. Sim ply find the num ...

  • Page 21

    C h a p t e r 5 main te nance gen eral this chap ter con tains op er a tor main te nance in struc tions, trou ble shoot ing and parts in for ma tion. With the rel a tively sim ple cir cuitry, con struc tion, and self-contained na ture of the model 4450 thruline equip ment, only a mod er ate amount o...

  • Page 22

    Pre ven tive main te nance w a r n i n g provide adequate ventilation and observe normal precautions when using dry cleaning solvents. Many dry cleaning agents emit toxic fumes that may be harmful to your health if inhaled. Avoid excessive skin contact or inhalation of the fumes when using any dry c...

  • Page 23

    Re pair al though the model 4450 is de signed to be rug ged and pro vide years of trou ble-free ser vice, oc ca - sional re pair or re place ment may be come nec es sary. This sec tion con tains re pair and re place ment pro ce dures. Re pairs should not be at tempted by the user for the first year ...

  • Page 24

    5. Re in stall the me ter and cal i bra tion board by re vers ing the dis as sem - bly pro ce dure. Do not tighten the me ter mount ing screws ex ces - sively. Range and mode switch replacement 1. Re move back cover. 2. Peel off the rub ber feet lo cated in the back half of the bot tom sec - tion to...

  • Page 25

    Re place ment parts list q t y . D e s c r i p t i o n p a r t n u m b e r 1 line sec tion as sem bly 4450-003 1 mount ing bracket 450-020 2 pc board mount ing brack ets 4450-019 1 30 ua me ter 2080-063 2 switch knobs 4110-016 1 me ter hous ing 4450-009 1 carrying strap 8580-003 8 bumper feet 5-875 ...

  • Page 27

    Qual ity in stru ments for rf power measuement from 2 to 2300 mhz and from 25 milliwatts to 250 ki lo watts in 50 ohm co ax ial line sys tems termaline ® ab sorp tion watt me ters load re sis tors cal o rim e ters thruline ® di rec tional mon i toring watt me ters tenuline ® attenuators coaxwitch ® ...