Viavi 3900 Series User manual

3900 Series
Digital Radio Test Set
ARIB Option Manual

10200 West York St, Wichita, Kansas 67215 U.S.A./[phone]/FAX [phone]
3900 Series
Digital Radio Test Set
ARIB Option Manual
PUBLIS HE D BY
VI AV I Soluti on s, Inc.
COPY R I GHT  VIAV I Solut ion s, Inc. 2 020
Al l rig hts re serv ed . N o pa rt o f t h is pu bl ic at ion m ay b e r ep rodu ced, st o red in a re t rie val syst em, or
trans m itt e d in a ny fo r m o r by any mea n s, electro n i c, me cha ni c al , phot ocop yin g, re cordin g or oth erw i se
witho ut th e p rior p ermis sion of the p ublisher.
Re-I s sued Ja n 20 20

i
Preface
SCOPE
Th is m an ua l c on tai ns oper ati o n al d e scri pt ions of the fea tu re s c on ta i ne d i n th e 3900
Seri e s AR IB T est S ys t e m Opti o n . Refe r to the 3900 Ser i es Ope ration M a nu al for
inf ormati o n r egar din g gene ral Te st Set o p era t ion.
NO MENCLATURE S TAT EMENT
Th e 39 01 , 390 2 , 3920 and 392 0 B D igita l Radio Te st Se t is the off icial no m en clatu re for
th e tes t se ts cu rre nt l y included in t he 3 9 00 Dig i tal R ad i o T es t Se t Se ri e s. In this manual,
39 00 , unit o r Te st S et , r efers t o th e 3901, 3 902, 3 920 and 39 20 B D igit a l Radio Test S et s
un less oth e rwise i nd i c ate d.
INTENDED AUDIENCE
Th is manu al is in t e nd ed for p er so nn el f a mili a r wi t h the use o f t he 3 9 00. Re fer to the 39 0 0
Seri e s Op e rat i on M an u al f or i nform a tion p ert ai n ing to T es t Set oper atio n .
TE ST S ET R EQUIREM ENTS
Refe r to th e 39 00 S er ies Opera t ion Manu al f or i nf ormatio n o n the fo llo win g:
•Safe ty Pr ec au ti o ns
•Power R eq uir ements
•Platform Perf o rmance Dat a Spec ifi ca ti o ns
•Repac kin g/ Sh i p pi n g T e st Se t

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ii
THIS PAG E IN T EN T I ONAL LY L EF T B LANK.

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iii
Co nte nts
CHAPTER 1 GENER A L DESCRIPT ION
Chapter d e scr i be s AR IB S ystem ca pabil i ties a nd sy st e m acc es s.
CHAPTER 2 ARIB SYS TE M TILES
Chapter d e scr i be s AR IB S ystem fun ct ion tiles.
CHAPTER 3 ARIB CHANNE L LOGGER
Chapter d e scr i be s AR IB S ystem Ch a nnel L o gger fun c tion.
CHAPTER A ARIB TE RMS AND AB BREV IATIONS
Chapter d e scr i be s AR IB S ystem ter m s a nd a bbre via tion s.

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iv
THI S PAG E IN T EN T I ONAL LY LE F T B LANK.

v
Tabl e of Contents
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
ARIB Option Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
ARIB Option Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Factory Installed Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Post Production Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Veri f ying ARIB Opt i on Install a tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
ARIB System Tiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
ARIB System Tile Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
Audio SIgnal Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
Audio/Demod Signal Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
ARIB Configuration Tiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3
Offsets Configuration Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3
Offsets Cable Loss Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 4
UUT M e as ureme nts L i mits C o nf i gu rat i on T ile . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 6
Test Tiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
Audio Generator Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
Audio Input Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 9
Constellation Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 10
Distribution Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 11
Eye Diagram Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 12
Generator Modulation Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 13
Power Over Time Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 15
RF Control Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 17
UUT Measurements Tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 20
ARIB Channel Logger . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
Viewing Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
Connecting Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
ARIB XML Command Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
<burst></burst> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
Filter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
<LogFilter></LogFilter> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3

Ta b le of Contents
vi
ARIB Ter ms and Abbrev iatio ns . . . . . . . . . . . . . . . . . . .A - 1

1 - 1
Ch apt er 1 - Gen era l Descr ipt ion
1.1 ARIB OPT ION OVERVIEW
Th e 39 00 A RIB Te st Sy st em (3 9 0XOP T460 ) i s an opt ional tes t s yst em dev e l op ed b y
VI AV I t o s upport the te sti ng of dig i tal two- wa y rad io sy ste m s. Th e 39 00 A R IB Test
Sy st em O p t ion pro vides th e u ser with the f ol lowing c ap ab i lit ies:
•Abili ty t o lo ck /un loc k pa i red gen e rat or an d r ec ei v er frequ encies;
•Abili ty t o re ceive , d emo dula te an d a n aly ze ARI B mod ula ted signal s;
•Abili ty t o perfo rm R F a nd mod ul ation para m et ri c test s on t he U ni t Un d er Te st
(U U T);
•Distri buti on , Co ns tellation an d Ey e Diagram g raph p lots;
•Vari e ty of UU T me asuremen ts i nc lu din g Bi t Er ror Rate , Sign a l P ower, F r eq u ency
Error, Symbol Cl o ck E rro r, S y mbol D ev i at ion an d FSK Er ror;
•Power P rofi le Over Time D i sp l a y T ile;
•Spe ctr um Ana l y zer, C h anne l A nalyz e r and O scil los cope are av aila b l e w ith i n the
ARIB Te st System.
1.2 SCOPE OF M ANUAL
Th e 39 00 A RIB Optio n M an ua l d escri bes fu n cti o ns a ss oc i at e d wit h the 3 90 0 ARIB T es t
Sy st em . Refe r to the 3 90 0 Ope ration Manu al for us e o f t h e fo l low ing in herent ba se
fu ncti on s:
•Te st S et I nstr u men ts
•To n e En co din g
•To n e Deco din g

Ge ne ra l Des c rip t ion
1 - 2
1.3 ARIB OPT ION INS TALLAT ION
1.3.1 Fact o ry Inst al led Opti on
When AR I B is p ur c ha se d as a fac to r y ins talle d opti o n t he A RI B Soft war e Op t ion is re ad y
to us e u p on r e ce ipt .
1.3.2 Post Produ ction O ption
When t he ARIB S oftw a r e Opti o n is purchas ed p ost p rod u ction the o pti o n so ftwar e a n d
op tio n l ic en se files must b e i ns tall ed in th e Test S e t . R efe r to th e 3 90 0 O p er ation Manua l
fo r Opt ion In sta ll a tion a nd Soft wa re U pgra de P roc edures.
1.3.3 Veri fy i ng A RI B Opti on In st allat i on
To che ck t h e s tatus of ins tall ed o pt ion s when op e r at ing i n Te st Mode:
STEP PROCEDURE
1. Pus h the U TI L S Key tw i ce to acce ss t h e Uti ls fl o a t ing me nu .
2. Select So ftwar e S e tti n gs , L ice ns e f rom the fl o at ing menu.
Th e Licen se T i le dis plays a li st of inst alle d op tio ns (re fe r to Fi g. 1 -1). A R IB is
39 0X O P T4 6 0 . T he opti on list va r ies ac co rdi ng to t he feat ure s ins tal led on t h e Te st Set.
“T ry be for e y ou b uy” o pt ions h av e an ex pi r at ion date .
Fig. 1 -1 39 0 0 License Tile
The Soft ware U p gra de T i le als o contains a l ist of insta l led options
as well as t he soft wa re v ersio n.
NOTE

2 - 1
Ch apt er 2 - ARIB Syste m T iles
2.1 INTROD UCTION
Th is chap te r d escrib es A R I B Til e layo ut and provi de s a n op er ationa l d escr ipti o n of AR IB
Sy st em T il e s.
Fig. 2 -1 A RI B Ti le Lay ou t
2.2 ARIB SYS TE M TILE LAYOUT
Th e AR IB Di s pl a y Til e s c an be c on fi g ur ed a ccording to test req uir em e nt s. Each sect i on of
th e d i sp l a y is co n figu red usi ng t h e d rop-down me nu on th e title bar o f e ach t ile.
•Sec tion A o f th e ARIB Use r S cr ee n alw ay s displays the RF C on t rol T ile wh e n t h e
Til es are min i mize d .
•ARIB Te st f un cti o ns a r e se l ec t e d fr om th e dr op -dow n men u located on th e T i le
menus on Sections B th roug h E.
•ARIB incl ud es ac ce ss to th e C h anne l A n aly zer, Spec tru m An a l yz er an d
Osc ill os co pe . Use of the Ch ann el Anal yze r, Sp ec tru m Ana lyz er an d Osc ill os co pe
ar e d escr i be d i n t he 3900 Seri es Op eratio n M a nu a l.
Section A
Section B
Section C
Section D Section E
Soft
Key
Area

ARI B STD-T 9 8 S y ste m Tile s
2 - 2
2.3 AUDIO SI G NAL ROUT I NG
2.3.1 Aud io/ De m od Sign a l R ou ting
Aud io/demod signa l r o u ting i s co nfi gu r ed by p re ss ing t he A ss ig n K ey on th e Fr on t Pane l.
Pr es sing the A ssign K ey d isplay s a gro up of so ft k ey s. Th e Sp eake r T o gg le Soft K e y
se lec ts the s ource a nd ro ut ing of the demod/audi o signa l appl i ed to th e T es t S e t’s
loudsp eake r.
Fig . 2- 2 As sig n Ke y - Soft Key Sub- menu
2. 3.1.A Fi el d Def initio ns
2.3.1 . A.1 Of f
No a ud io i np u t is being r o ut ed to the s pe aker.
2. 3.1.A. 2 Audio
Routes th e inc om in g sig na l from th e Au di o In put c onnec tor to t he s pe ak er .
2. 3.1.A. 3 Dem od
Routes th e inc om in g sig na l from th e FGEN C onne ct o r t o th e sp ea ke r .

ARI B STD-T 9 8 S y ste m Tile s
2 - 3
2.4 ARIB CONFIGURA T IO N TILES
2.4.1 Off sets C on fi gurat io n Ti le
Th e Of fse ts Confi gu ra tion Til e all ows us ers t o de fin e Ge n era to r (T x) an d Rec ei v er ( R x)
Le ve l off s ets .
Fig. 2- 3 Off se t s Co nf igura ti on T ile
2. 4.1.A Fi el d/ So f t Key Definitio n
2. 4.1.A. 1 Tx O ffse t Level
Defi n es R F Gen er ator L ev el O ffset v al u e.
2. 4.1.A. 2 Rx Off set L evel
Defi n es R eceive r L evel O ff set va l u e.
2. 4.1.A. 3 TX Off set/ R x Offse t S oft Key s
Ena ble s/ Disab les d ef ined Tx an d Rx off se t value s.

ARI B STD-T 9 8 S y ste m Tile s
2 - 4
2.4.2 Off sets C able Lo ss M ea su re men t s
Th e Cable Loss Mea su r e men ts f unctio n ali ty prov id es us er s with th e abil ity to us e the
Te st Set’ s Trackin g Generato r to e valuate a tes t c able i n o rder to c ompe ns ate for a ny
ca bl e lo ss an d to chara ct eri z e attenua tor s a nd o t he r dev ice s wh i c h impar t a gain o r lo ss.
2. 4.2.A Fi el d/ So f t Key Definitio ns
2. 4.2.A. 1 Cab le Lo ss F ile Me nu
Th e Cable Loss File M e nu is en ab l e d w h en the Tra ck ing Ge ne rator Opti o n is i n s t al led in
th e T est Se t. T his m e nu l o ad s a s tored Cable Lo ss tr a ce file whic h co nta i n s d at a th a t
de fin es t h e R F Generat or or RF Analyz er Leve l Of fset by th e o ffs et va lue in th e Cable
Lo ss T rac e.
Fig . 2- 4 Ca bl e L os s Pa ra m ete rs Enabled
Cable L oss Meas ur eme nts are en abled w h en th e 3 9 00 Tr ac kin g
Ge ne rator Opti o n is i ns talle d in the Tes t S et.
The Cable Lo ss Fil e M e n u i s on ly popu lated whe n on e or mo re Cable
Los s trac es has b ee n c r e at e d .
NOTE
NOTE

ARI B STD-T 9 8 S y ste m Tile s
2 - 5
2. 4.2.A. 2 Cab le Lo ss S oft Key
Th e Cable Loss So ft Ke y is e na bl e d whe n t he T r ac kin g G en erato r O p t ion is i ns t a lled in
th e T est Se t. T he Cable Loss Sof t Key ac cess es s oft keys w hic h a re used to c rea te
ta ble s o f amplit ud e l os s for u p to three t e st c ab l e s o f d if feren t c on f igur atio ns.
Fig . 2- 5 Ca bl e L os s T a bles
Pr es sing the C ab le Lo ss 1, 2 or 3 Soft Key initiates a gu i de d pr oc edur e f o r d e f ining a
ca bl e lo ss ta ble. The Tes t S e t pr ovides a ser i es of on -screen in str uc t ion s that the us er
fo l lows to cre at e e ac h tab le.
Cable L oss fi l es ar e s tor ed in t h e T es t Set’s C a bl e L os s F i le s
dir e ct o ry.
Sto re d Cable Los s F ile s can be tr an sfe rre d f rom on e Te st Se t to
ano ther us ing th e File M a na ge men t T i le. The re ceiving Test Se t
mu st ha ve t h e T rack i ng Gene rator Optio n ins tal led i n or de r to
tr an sf e r t he file s.
Tra nsfer red fil es must b e p lace d in th e rec ei v in g Te st Set’ s Cable
Los s Files dir e ct ory in or de r f o r th e fi le t o be ac cess i b le.
NOTE

ARI B STD-T 9 8 S y ste m Tile s
2 - 6
2.4.3 UUT M ea sur e men ts Li mit s C o nf ig ur at ion T il e
Th e UUT M e as ureme nts C on fi g ura tio n Ti le d efin e s t h e lim its for UU T meter rea dings.
Fig. 2 -6 U UT Measu reme n ts Lim its C on fi g ura tio n T i le
2. 4.3.A Fi el d/ So f t Key Definitio ns
2. 4.3.A. 1 Disabled /En abled
Th e Ena bl e /Disable T oggle b ut t on turn s d ef ine d lim its o n and off . D efa u lt va lu es ar e
ap pl ied if values are not d efi ned by us er.
2. 4.3.A. 2 Upper Limi t
Th e Upp er Limit fu nction sets a ma ximu m acce pt ab l e rea d ing for a s pecifi c m e as ur eme nt.
When a m e a sured l e ve l e xc ee ds the enab l ed Upp e r Li mi t, th e Me ter B ar and r ea d ing
ba ck gr ound on t he Mea sure m en t Til e s turn s RED .
When re ad i ng s ar e wit h in enab l ed Upp e r a nd Lo wer l imi ts the M e ter Ba r a nd r ea din g
ba ck gr ound on t he Mea sure m en t Til e s turn s GR E EN .
2. 4.3.A. 3 Lo wer L im it
When a m e a sured l e ve l d rop s be low t he enabled Lowe r L i mit , t he Met er Ba r a nd read i n g
ba ck gr ound of the Me a su rement Ti l es tur ns B LU E .
When re ad i ng s ar e wit h in enab l ed Upp e r a nd Lo wer l imi ts the M e ter Ba r a nd r ea din g
ba ck gr ound on t he Mea sure m en t Til e s turn s GR E EN .
2. 4.3.A. 4 Unit s
Selects t h e u n it o f m easu re f o r a ppli ca ble m e as ur eme nt.
2. 4.3.A. 5 Ave rages
Spe ci fie s the num b er of bu rst s ove r w h i ch data is averaged for eac h m e as ur eme nt.
Values ca n be se t in d epen de ntl y f or ea ch m et er.
2. 4.3.A. 6 Set All A verage s To Soft Ke y
Spe ci fie s t h e n u m be r of bursts over wh ich data i s a veraged fo r al l m e asur eme nts . V al u e s
ca n als o b e se t i n de pe n de ntl y fo r e ac h meter.

ARI B STD-T 9 8 S y ste m Tile s
2 - 7
2.5 TE ST T ILE S
2.5.1 Aud io G ene rator T ile
Th e Aud io Ge nera tor Til e d e fines au di o gen er ato r p ar am e ter s f o r u se i n te stin g An a log
ra dio sy st ems. P ar a met ers c an be d ef ined s ep a rate ly for ea ch g en e rator. The Te st Set is
co nf igu red to allow t he us er t o simult a ne ou sl y ena ble the audio g en er ators on the Audio
Gener ato r s Til e a nd th e modula tio n g e nerat ors on t he G en er at o r M o du l a tion Til e.
Fig. 2-7 A ud io Gen er ato r T ile
2. 5.1.A AF G ener ator Field D efi nit i on s
2. 5.1.A. 1 A1, A2, A 3 Togg le B utton s
Th e A1, A 2 an d A3 to ggle butto ns e na ble/d i sa ble c orr es pond ing aud io ge n er a tor. AF
Gener ato r s ca n be en a ble d i n c om b ina tion or individua lly .
2. 5.1.A. 2 Fr eque nc y
Sets t h e fr eq uency for ea ch A F ge nera tor . F requ en cy can be sp e cified i n k H z o r H z as
de fin ed b y u se r.
2. 5.1.A. 3 Amp litud e
Defi n es t h e am p lit u de fo r e ach AF G en er ato r. Ampli tude ca n be sp e cif ied in V or mV a s
de fin ed b y u se r.
2. 5.1.A. 4 Wa veform
Defi n es t h e Wav efo rm f or ea ch A F Gene rator .
2. 5.1.A. 5 Sequenc e
Th e Seq ue nce f ield i s en a ble d w h en DT MF Wa ve f o rm is se lec ted. Th e f ield
de fin es/i n dic ate s the DTMF S e quen ce o f th e D T M F Waveform .
2. 5.1.A. 6 CODE
Th e Code f i eld is en ab led when DCS o r D C S INV W av efo r m i s se l e ct e d. The fi e ld
de fin es/i n dic ate s the DCS code word o f the g ene rat ed sig nal.

ARI B STD-T 9 8 S y ste m Tile s
2 - 8
2. 5.1.A. 7 Ou tput P o rt
Sett ing the O u tpu t P o rt t o AF Ou t r ou t es th e ou tpu t f r om t he A F G e ne ra tor s to the FCTN
GEN/ D e mod Co n nector. Sel ecting D emo d O u t route s t h e d emo dulated audi o signal t o the
FCTN/G EN Demod Out Con ne cto r .
2. 5.1.A. 8 Impe da nc e
Defi n es t h e ex t er na l t e rmi na ti o n va l ue u se d t o c al c ul a te th e A F Gen e rator po we r l e vel.

ARI B STD-T 9 8 S y ste m Tile s
2 - 9
2.5.2 Aud io Input Ti le
Th e Aud io I np ut Tile c ontain s para m et e rs f or co nf iguri n g a u dio si g n al r ou ti n g.
Fig. 2-8 A u di o In pu t T i le
2. 5.2.A Fi el d Def initio ns
2. 5.2.A. 1 Sou rc e
Selects t h e A u di o in pu t s ourc e.
2. 5.2.A. 2 Int L oad
Selects e ithe r t h e 10 k Oh m or 600 Ohm i nte rnal l oa d t o be applie d at the A udio 1 or
Aud io 2 In put. Audio Bal ance d I nput ap pli es a f ixed i nt e rnal l o a d o f 600 O h m s.
2. 5.2.A. 3 Externa l L oa d
Th e 390 0 al lows the use r to de fin e an extern al lo ad v alu e w hi c h is ap plie d a t t h e Aud i o 1
or Au d io 2 In put p or ts. Th e ex t er na l l o ad valu e i s a pp l ied to A F Le ve l d Bm or Watt
measu remen ts when th e Ex te rna l L oad i s e n abled.
2. 5.2.A. 4 Externa l L oa d En ab le
Th e Ex t L oad t og g l e b ut ton ena bl e s /dis ab l e s the us e o f a n ex ter na l lo ad.
2. 5.2.A. 5 Fi lter
Selects a m ea sure m ent fi lte r t o in cl ud e in th e mea sure m en t path.
2. 5.2.A. 6 Psoph
Selects CM E S S o r C C ITT Psoph ome t ric w ei g ht ing fi lte r when th e P soph fi lte r is selected
from any of the F il ter se l e ctio n drop- down me nus. P soph fi lte rs ar e ty pi ca l ly use d for
SI NA D meas ure ments , e i the r D e mod o r A ud io.
The Rx Pr oto col fi eld on the RF Cont rol Tile m u st be se t to Analog i n
ord er to p e r form Aud io M ea su rements.
NOTE

ARI B STD-T 9 8 S y ste m Tile s
2 - 10
2.5.3 Con ste l lation Tile
Th e Conste lla t ion ti le is us ed t o determ in e p rope r o pera tion of the t rans mitter. The fo ur
po ints r ep rese nt t he fo ur deviati o n s ta tes (D IBIT S ym b ol s ) o f the AR I B FSK m o du lat ion
sh ow n be l o w. The gr ee n p l o t f ields in dic ate th e ex pe cte d l oc at i on o f pl ot clusters.
DIB IT Symbol Ma pp i ng to 4 FSK D eviati on
Fi g. 2 -9 C on s tella tio n T i le
2. 5.3.A Fi el d/ So f t Key Definitio ns
2. 5.3.A. 1 Pers ist en ce
Spe ci fie s h ow many t rac e p l ot s ar e sh o wn sim u l tane ou sly on the dis pla y fi el d . Sele cta ble
ra nge i s 1 to 10 . Selecting 1 mea n s that only on e burst or tim e sl o t i s dis pla ye d on th e
displ ay fi e ld. S e l ec ti n g 1 0 means the l as t 10 b ur sts or ti me slots ar e display ed
simu lt a ne ously on t he di s p l ay fie l d.
2. 5.3.A. 2 Res et M eter s S oft Key
Th e Res et Me t e rs Soft Key clears and res e t s the m ete r r ea din g s.
In form a tio n Bi ts Symbol 4FSK D evia t ion
01 +3 +0 .945 kHz
00 +1 +0 .315 kHz
10 - 1 -0. 3 1 5 k H z
11 - 3 -0. 9 4 5 k H z