ETS-Lindgren 3144 User manual

M od el 3144
Log Pe ri od ic
D i po le A rray An t e nn a
U se r M a nu al

E T S - L i ndg r en L.P. r e s e r v e s the ri ght to m a k e c hange s to an y p r odu c t de sc ri bed
he r e i n i n o r de r to im p r o v e fun c t i on, de s i gn, o r fo r an y othe r r ea s on. N oth i ng
c onta i ned he r e i n s ha ll c on s t i tute E T S - L i ndg r en L.P. a ss u mi ng an y li ab ili t y
w hat s oe v e r a ri s i ng out of the app li c at i on o r u s e of an y p r odu c t o r c ir c u i t
de sc ri bed he r e i n. E T S - L i ndg r en L.P. doe s not c on v e y an y li c en s e unde r i t s
patent ri ght s o r the ri ght s of othe r s .
© C op y ri gh t 1997–2010 b y E T S -L i ndg re n L .P. A ll R i ght s R eserve d . No p ar t
of th is do c u me nt may b e c op ie d b y a n y mea n s wi thout wri tt e n p ermissi on
f r o m E T S -L i ndg re n L .P.
Tr ade m a r ks u s ed i n th i s do c u m ent: T he E T S - L i ndg r en l ogo i s a t r ade m a r k of
E T S - L i ndg r en L.P.
R evisi on R ec o r d
MANUAL 3144 L OG PE R IO D I C ANT E NNA | Par t # 399171, R ev. E
R evisi on D escri pt i on D a t e
A– C In i t i a l R e l ea s e
U pdate s /ed i t s
U pdate s /ed i t s J anua r y , 1997
D U pdate s /ed i t s Septe m be r , 2002
E R eb r and Septe m be r , 2010
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T a b le o f Cont e nt s
N o t es, C a ut i on s, a nd W a r n i ng s................................................ v 
1.0 I nt r odu c t i on .......................................................................... 7 
Opt i ona l Ite m s ................................................................................................8 
Suppo r t R od...........................................................................................8 
Tri pod.....................................................................................................8 
E T S - L i ndg r en P r odu c t Info rm at i on Bu ll et i n ...................................................9 
2.0 M ai nt e n a n ce ....................................................................... 11 
M a i ntenan c e R e c o mm endat i on s .................................................................11 
Annua l C a li b r at i on .......................................................................................11 
Se r v i c e P r o c edu r e s .....................................................................................11 
3.0 S p eci f ica t i on s..................................................................... 13 
E l e c t ri c a l Spe c i f i c at i on s ...............................................................................13 
Ph ys i c a l Spe c i f i c at i on s ................................................................................13 
4.0 Mount i ng & A sse m b ly ....................................................... 15 
M ount i ng In s t r u c t i on s ...................................................................................15 
U s i ng In c l uded M ount i ng Adapte r s ......................................................15 
Add i t i ona l 4 -TR M ount i ng Opt i on s .......................................................17 
Add i t i ona l 7 -TR and M a s t M ount i ng Opt i on s .......................................18 
Add i t i ona l 2 x 2 Boo m M ount i ng Opt i on s ..............................................19 
A ss e m b l y In s t r u c t i on s ..................................................................................20 
5.0 App lica t i on ......................................................................... 21 
6.0 T y p ical D a t a........................................................................ 23 
M ode l 3144 Antenna F a c to r ........................................................................23 
M ode l 3144 Ga i n .........................................................................................23 
M ode l 3144 VS WR ......................................................................................24 
M ode l 3144 H a l f - Po w e r Bea mwi dth ............................................................24 
M ode l 3144 F o rw a r d Po w e r 1 M ...................................................................25 
M ode l 3144 F o rw a r d Po w e r 3 M ...................................................................25 
App e nd ix A: W arra nt y ............................................................. 27 
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Not es, C a ut i on s, a nd W ar n i ng s
Not e : D enote s he l pfu l i nfo rm at i on i ntended to
p r o v i de t i p s fo r bette r u s e of the p r odu c t.
C a ut i on : D enote s a ha z a r d. F a il u r e to fo ll o w
i n s t r u c t i on s c ou l d r e s u l t i n mi no r pe r s ona l i n j u r y
and/o r p r ope r t y da m age. In c l uded te x t g i v e s p r ope r
p r o c edu r e s .
W ar n i ng : D enote s a ha z a r d. F a il u r e to fo ll o w
i n s t r u c t i on s c ou l d r e s u l t i n SEVE R E pe r s ona l i n j u r y
and/o r p r ope r t y da m age. In c l uded te x t g i v e s p r ope r
p r o c edu r e s .
See the E T S - L i ndg r en P r odu c t Info r m at i on Bu ll et i n fo r s afet y ,
r egu l ato r y , and othe r p r odu c t m a r k i ng i nfo rm at i on.
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1.0 I nt r odu c t i on
T he E T S -L i ndg re n Mod el 3144
Log Peri od ic D i po le A rray i s a
li nea rl y po l a ri z ed, b r oadband
antenna de s i gned to ope r ate o v e r the
f r equen cy r ange of 80 MH z to 2 G H z .
T he c ho i c e of sc a li ng fa c to r s , the v a ri ou s d i a m ete r s of ea c h e l e m ent, and the
c ente r- to - c ente r s pa c i ng of the boo m s a r e s u c h that e xc e ll ent VS WR
c ha r a c te ri s t i cs a r e obta i ned th r oughout the ope r at i ng f r equen cy r ange.
T he p r e c i s e de s i gn of the feed and the po s i t i on i ng of the e l e m ent s on the boo m
y i e l d opt im u m pha s e r e l at i on s h i p. T h i s c au s e s the a c t i v e r eg i on, at an y g i v en
f r equen cy , to p r opagate RF ene r g y to w a r d s the s m a ll e r e l e m ent s l ea v i ng the
e l e m ent s beh i nd i t e l e c t ri c a ll y dead.
T he c on s tant ga i n of the antenna y i e l d s an antenna fa c to r w h i c h v a ri e s li nea rl y
wi th f r equen cy . T he v a ri at i on i s s m ooth; the r efo r e, a cc u r ate i nte r po l at i on of
pe r fo rm an c e bet w een s pe c i f i ed f r equen cy po i nt s i s s im p l e.
T he M ode l 3144 i s p r o v i ded wi th an i nteg r a l m ount and the ne c e ss a r y
atta c h m ent s to m ount the antenna to e i the r a t ri pod (wi th a 1/4–20 th r eaded
m ount ) o r an E T S - L i ndg r en antenna m a s t. F o r the v a ri et y of m ount i ng opt i on s
a v a il ab l e fo r the M ode l 3144, s ee M ount i ng & A ss e m b l y on page 15.
Ea c h M ode l 3144 i s i nd i v i dua ll y c a li b r ated at one m ete r pe r SAE A R P 958 and at
th r ee and 10 m ete r s pe r A N SI C 63.5. A c tua l antenna fa c to r s and a s i gned
C e r t i f i c ate of C a li b r at i on C onfo rm an c e a r e i n c l uded.
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O pt i on al I t ems
S U PPO RT R O D
Antenna m ount wi th i n s e r t d rill ed to a cc ept E T S - L i ndg r en o r othe r t ri pod s wi th
s tanda r d 1/4–20 th r ead s .
T R IPO D
E T S - L i ndg r en offe r s the fo ll o wi ng non -m eta lli c , non -r ef l e c t i v e t ri pod s fo r u s e at
both i ndoo r and outdoo r E MC te s t s i te s .
• 4 -TR T ri pod — C on s t r u c ted of li nen
pheno li c and de lri n, de s i gned wi th an
ad j u s tab l e c ente r po s t fo r p r e c i s e he i ght
ad j u s t m ent s . M a x im u m he i ght i s 2.0 m
( 80.0 i n ) , and mi n im u m he i ght i s 94 c m
( 37.0 i n ) . T h i s t ri pod c an s uppo r t up to
an 11.8 k g ( 26.0 l b ) l oad.
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• 7 -TR T ri pod — C on s t r u c ted of PV C and
f i be r g l a ss c o m ponent s , p r o v i d i ng
i n c r ea s ed s tab ili t y fo r ph ys i c a ll y l a r ge
antenna s . T he un i que de s i gn a ll o w s fo r
qu i ck a ss e m b l y , d i s a ss e m b l y , and
c on v en i ent s to r age. A ll o w s s e v e r a l
d i ffe r ent c onf i gu r at i on s , i n c l ud i ng opt i on s
fo r m anua l o r pneu m at i c po l a ri z at i on.
Qu i ck he i ght ad j u s t m ent and l o ck i ng
w hee l s p r o v i de ea s e of u s e du ri ng
te s t i ng. M a x im u m he i ght i s 2.17 m
( 85.8 i n ) , wi th a mi n im u m he i ght of 0.8 m
( 31.8 i n ) . T h i s t ri pod c an s uppo r t a
13.5 k g ( 30 l b ) l oad.
E T S -L i ndg re n Pr odu c t I nfo rma t i on Bu lle t i n
See the E T S - L i ndg r en P r odu c t Info rm at i on Bu ll et i n i n c l uded wi th y ou r s h i p m ent
fo r the fo ll o wi ng:
• W a rr ant y i nfo rm at i on
• Safet y , r egu l ato r y , and othe r p r odu c t m a r k i ng i nfo rm at i on
• Step s to r e c e i v e y ou r s h i p m ent
• Step s to r etu r n a c o m ponent fo r s e r v i c e
• E T S - L i ndg r en c a li b r at i on s e r v i c e
• E T S - L i ndg r en c onta c t i nfo rm at i on
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2.0 Mai n tenance
B e f o re perfor ming any maintenance,
follow the safety information in the
ETS-Lindgren P r odu c t Infor mation
Bulletin included with your shipment.
Maintenance of the Model 3144 is limited
to external components such as cables
or connectors.
If you have any questions concerning
maintenance, contact ETS-Lindgren
Customer Service.
W ARRAN TY
M ai n tenance Reco mmendations
If the Mode l 3144 Log Periodi c Dipole Array Antenna is used outdoors, periodic
removal of the antenna cable connection and cleaning of any corrosion may be
needed to maintain accuracy of the measurements. An inspection to determine
the need for cleaning should be made at least every six months. More frequent
inspection may be needed depending on the atmosphere and the environment in
which the antenna is used.
Annual Calib ration
See the P r odu ct Infor mation Bulletin included with your shipment for information
on E TS-Lindgren calibration services.
Service Procedures
For the steps to return a system or system component to ETS-Lindgren for
service, see the Product Information Bulletin included with your shipment.
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3.0 S p eci f ica t i on s
Elec t rical S p eci f ica t i on s
F re qu e n cy R a ng e : 80 MH z –2 G H z
I nput Im p e d a n ce : 50 Oh m s
VS WR: A vera g e : 1.2:1
M axim u m : 2.0:1
CW P o wer : 1000 W
Symme t ry : +/– 0.5 dB
Conn ec to r : T y pe N F e m a l e
P h ysical S p eci f ica t i on s
H ei ght: 6.4 c m ( 2.5 i n )
W i dth: 213.4 c m ( 84.0 i n )
D e pth: 167.6 c m ( 66.0 i n )
W ei ght: 4.3 k g ( 9.5 l b )
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4.0 Mount i ng & A sse m b ly
Th e Mod el 3144 a nt e nn as are p recisi on
meas u reme nt d evices. H a nd le y ou r a nt e nn a
wi th care.
M ount the M ode l 3144 Log Pe ri od i c Di po l e A rr a y Antenna f ir s t, and
then atta c h the e l e m ent s to the antenna.
Mount i ng I n s t r u c t i on s
U SI N G I NCLUD E D M O UNT I N G A DA P T E R S
T he M ode l 3144 s h i p s wi th the s e m ount i ng adapte r s :
• 100989 P o lari z i ng Mount i ng
Ad a pt er wi th 7/8–14 th rea d
rece pt acle
If y ou need to c on v e r t the po l a ri z i ng
adapte r to a 1/4–20 r e c epta c l e,
i n s e r t the 1/4–20 th r ead i n s e r t i nto
the po l a ri z i ng adapte r
• 105861 B 1/4–20 Th rea d I n ser t
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To attach the included adapters to the Model 3144:
1. If required, insert the 1/4–20 thread insert into the polarizing adapter.
2. Remove the mounting knob from the mounting bracket on the antenna.
3. Slide the polarizing adapter into the mounting bracket by placing the
polarizing adapter placed between the shoulders of the mounting
bracket.
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D o not c r o ss th r ead o r pe rm anent da m age to the adapte r c ou l d o cc u r .
4. T h r ead the m ount i ng k nob th r ough the m ount i ng b r a ck et, then th r ough
the po l a ri z i ng adapte r , and f i na ll y th r ough the he x nut.
5. Ti ghten the m ount i ng k nob to s e c u r e the antenna.
6. Atta c h the po l a ri z i ng adapte r and antenna to t ri pod o r to w e r , a s
r equ ir ed.
A DD I T IO NAL 4 -TR M O UNT I N G O P T IO N S
F o ll o wi ng a r e add i t i ona l opt i on s fo r m ount i ng the M ode l 3144 onto an
E T S - L i ndg r en 4 -TR t ri pod. C onta c t the E T S - L i ndg r en Sa l e s D epa r t m ent fo r
i nfo rm at i on on o r de ri ng opt i ona l m ount i ng ha r d w a r e.
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A DD I T IO NAL 7 -TR AND M A S T M O UNT I N G O P T IO N S
F o ll o wi ng a r e opt i on s fo r m ount i ng the M ode l 3144 onto an E T S - L i ndg r en 7 -TR
Tri pod o r m a s t. C onta c t the E T S - L i ndg r en Sa l e s D epa r t m ent fo r i nfo rm at i on on
o r de ri ng opt i ona l m ount i ng ha r d w a r e.
M a s t r efe r s to 2070 Se ri e s , 2075, and 2175 Antenna T o w e r s .
7 -TR r efe r s to 109042 and 108983 boo m s :
• 109042 boo m — St r a i ght boo m ; fo r gene r a l antenna m ount i ng on a
7 -TR .
• 108983 boo m — Off s et boo m ; fo r gene r a l antenna m ount i ng on a
7 -TR wi th pneu m at i c o r m anua l po l a ri z at i on; c an a l s o be u s ed to
m ount s t i nge r- t y pe antenna s .
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A DD I T IO NAL 2 X 2 B OO M M O UNT I N G O P T IO N S
F o ll o wi ng a r e add i t i ona l opt i on s fo r m ount i ng the M ode l 3144 onto a 2 x 2 boo m .
C onta c t the E T S - L i ndg r en Sa l e s D epa r t m ent fo r i nfo rm at i on on o r de ri ng opt i ona l
m ount i ng ha r d w a r e.
2 x 2 boo m r efe r s to a t y p i c a l 2 -i n c h b y 2 -i n c h boo m .
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A ssem b ly I n s t r u c t i on s
T o fa c ili tate t r an s po r t, the M ode l 3144 i s s h i pped wi th the f i v e l onge s t e l e m ent s
on ea c h s i de r e m o v ed. Afte r y ou m ount the antenna, fo ll o w the s e a ss e m b l y
s tep s :
• D o not c r o ss th r ead o r pe rm anent da m age to the antenna and
e l e m ent c ou l d o cc u r .
• D o not o v e r t i ghten o r u s e e xc e ss i v e fo r c e o r pe rm anent da m age
to the antenna and e l e m ent c ou l d o cc u r .
1. C a r efu ll y th r ead one of the nu m be r ed e l e m ent s i nto the c o rr e s pond i ng
nu m be r ed r e c epta c l e.
2. T h r ead the e l e m ent unt il i t i s f i nge r t i ght.
3. R epeat the s e s tep s unt il a ll of the nu m be r ed e l e m ent s a r e m ounted.
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