Motorola R-2002A Manual page 216

1.
•l
6.
L
2.
I
f
I
Figure
.:H.
.Scope
Amplifi(~l'
Jloard ( A2) -
Alignment Point:1
.
'
, t;;
•·P'iC/\L CENTERING AND TRACE
:i\J: 1-<"i'!ON
•
Sd<·c• r;, ...
l ·
~
:•.
i'\'Hr digplay.
Adjust
the Intensity
Adjust the Hori:wnt.a.l Position potentiometer
IFigmc
:3-1) so that the vertical trace on the CRT
pnss<'.s through the graticule center point.
Hemove the jumper from TPfi.
C!.'"'- for1ahlt- viewing
hrightneH~.
Wit! -- fJoinl
Shorting .Jurnpt:'r, Nmuect
3.2.6 CRT HORIZONTAL GAIN
Tl'l ·•' : h• :1c,;pe Amplifier ll\Jard
(i"i~ure
;l-U tO
chn;~;.;i.ll
ground.
Ad
ju-.1
1
he Tnu.:e HoHtliou iJOlt:mliomt:Jt.er
(}'i~tu·e
:1 ; ·: .· ;:;ake the
hNiLOrlh11
trac~e
t:1ulht>
CRT per-
p.,..h;icular
t(•
tlw
gt :'
i·~ule
ccntN
line.
:\dJ
Jst t.hc
Vc·rtical
P•
.;.;Jti(m
potcntiomNcr
(r'igure
; l}
,;o th11t the
h.'~"l''.''t~l1r :::1'
nn the CRT
pnss('S
' .. , .. ,. tgh t,he ~n\ti( ' :
vnint.
~r.
the
Tr<tc~
f'. ·"
pnrtntimnetE>t
!FigtU't!
lO
align
tht'
lwt·i,.•.:aLtl
t.ra<:~
on
th~
CRT
;
c:nt~ld
the hoti:t..fllltnll{n:• :cult: liuc.
Hunt•\
<' •
he jumper from TPl.
1.
4.
Sele(:t Uen/Mnn Mtr diF.:play. Adjust the Tnte .
~
lJ.
control fm a <:omfc·•' \.• · ··iE'wmg brightnes2.suy
With the
Test-Poit~r
··J.,•rting
Jumper,
l:onned
TP6 oft he Seopt!
Amplifier
board ( l•'igure 3-ll t.o
dms!i-ili ground.
Connect the Mod Out port i.o
t.he
Ext Horiz port
on the System Analyzer's front panel.
H<~~~~ct
Generate FM fuuction and Scope
D( ·
di;:;-
pl:~y.
Set the Horiz control for external horiwntal
input
(F<~xt).
Turn the Code
Synthesizer
Hnd the
li:xt
J ,(·
·cJ
control
OFF, and the 1 KHz Lev" I ron·
trot •.:_ \.!out half way.
Cc.•:t • ' ·
.:til
o::~cillost~ope
with a calibrated
\'E'rLits.l
input tn TPf:.i
on
rhe
Scope Amplifler
hoard
(FiJ.;urf
:.t-1).
Using the front panel's
horizontal
vern,.-r :. ,nt.rol,
ndj~•J:!t.
for
!i
:~
V p·p
amplitude
on the
~ine'l.';;vc
at
TPfi.
With J VI' ,. ;;- TP6, adjust the Horizontal Gait
!Nltmtion~~-· ,,~
'
<
1gure 3-l) for
H
CRT
horizontal
uace of
t! ''·
!Utic
lh~
front panel controls tc
po:~ition
the
trac(; at.
1:1.
eonvenient place near
th~
center
1)f
the CRT.)
15-0CT-57 lE-:01 S't'STEMS MICROWAIJE TEL:01252 376385
F
~."/..!
l_;H.
I V I:M III.,.AL
U"'ll'~
l.
2.
3.
4.
5.
6.
C€;mnr-.. · .(· 'vfod Out port.
lo
the vertical input
pon
1\·,.,
:!:)
nn the Sy;;t.fml Analyzer's front
panel.
Select Generate FM fum:tion and
Scop<~
DC dis-
play.
Set the
Hur.iz
control for a sweep
rate
of
1
mSec/Div and the horizontal vernier to CaL Het
the Vert control for an input
8Ct1sitivity
of 1 V /l>i\·
and
tht>
vertical vernier to Cal.
Turn
the
Code
:::iynthesizer nnd the IO:xt
Level con-
trol Ul•F, and the 1 KHz Level <:ontrolup ab.:1ut
hal.t"wny.
Conncc:t an
oscilloe.co11e
with a cali.brat.ed vertical
input to
Tl'l
on the
Scvpt' Amplih\:r htmrd (Figure
3-1).
Using the l KHz Level control on t.he front panel.
adjust for a 3 Vp-p amplitude on the sincwavc at
TPl.
With
;~
Vp-p at TPl, adjuMt the Vet'tiral Gain
potentiometer
(Fi~ur·e
:1-1) for a G-em p-p l;ine-
wave on the
CRT. (Use
the front panel's
Horiz and
Vel't position
con;rol~
to cenl..er
tht~
Wtt\o't!funu
011
the
cwr.)
1. Select. Generate J<'M
function
and Scope DC dis-
play.
Set
the Ilu.ri;z;
control
for a
~weep
rate
of
1
mSI:!~.:/Div
lmd Lhe
hnrizonta1 vernier
to Cal.
Set
the Vert. control for
an
input sensitivity of 1 V /Div,
tul.d the vertical
n~~, !~r
to Cal.
2.
Connect
an osdllos(:ope with a calibrated vertical
input to the Mod Out. port on the front.
paneL
a.
Turn the Code Synthesizer and the Ext Lewl
t~on·
t
rol
OFJ·'
Hnd
adjust the 1
KHz
Level control for a
ll Vp-p
-.o:H~wave
on the attached oscilloscope.
4.
Di;;c:onnect.
the o;;cilloscope from the
Moc
Cut port
and conned
1
i \1od Out port to the
\'t'n
input
port.
5. Adjust the.
i r~p:.;t
V ertkal Gain potentiomtter
liE!
the Front P
··~~d
J
Mr~rface
hoard
{l<'igure :; · 2
1
ior
il
6-em
p-p Slncwave on the CHT. (V::-e
tht'
front
pnnC'l'~
Hori2
tdn
Vert po8ition cuniJ·•h
t•J
center
the wavefor•r :; the CltT.)
3.2.9 DVM ZERO