Kenwood CG-931 User manual

CG-931
INSTRUCTION MANUAL
KENWOODCORPORATION
©PRINTED IN JAPAN
KENWOOD
ColorPatternGenerator
CG-932

A productof
KENWOOD CORPORATION
17-5, 2-chome, Shibuya, Shibuya-ku, Tokyo 150,Japan
2

CONTENTS
1. OUTLINE • 3
2. FEATURES • 4
3. SPECIFICATIONS • • 5
4.PANELEXPLANATION • 8
5.PRECAUTIONS USE14
6.DIRECTIONS FORUSE14
7.MAINTENANCE • 18
8.ADJUSTMENT • -19
9.OPTIONS 20
1. OUTLINE
TheCG-931[CG-932] is a portablecolorpattern
generatorforuseinthegenerationofcolorbar,dot,
cross-hatch, andcentercrosspatterns.It is usedinthe
testing,adjustment,andrepairof NTSC [PAL]format
colorandblack-and-whitetelevision receivers, andthe
imagingcomponentsofvideorecorders (VTR). In
addition,remote-controllablemodelsareavailable
whichenableallpatternstobeswitchedremotelyvia
the optional remote controller RT-62.
This manualwas written foruse with both the CG-
931 and CG-932 models.Themain flow ofthe
manualis written intermsofthe CG-931, with
portionspertainingtothe CG-932 shownin
brackets [ ] .
3

2. FEATURES
•The productis a NTSC [PAL]standardformatcolor
patterngeneratorwhichenablesswitchingbetween
full-field andI.Q.W.[PAL:U.V.W.]insertion,and
offerschrominanceandluminance ON/OFF options.
•The devicecanswitchbetweentwotypesofsplit
colorbars.
•S output isprovidedasstandardequipment,andY+
SandC outputscanalsobeobtained from theBNC
terminalontherearpanel.
•The Y + S andC valuesoftheS output canbevaried
individually.
•The setup,chrominance,andluminancelevelscan
befreelyset,anda CALisprovidedtomakethe
device convenientforuseinoperationssuchasthe
adjustmentandrepairofcolortelevisionreceivers
andthelike.
•Throughuseofred,blue,green,andwhiterasters,
thedeviceenables purity confirmation,and
investigationandadjustmentofwhitebalance.
•The deviceenablesrasteralignmentandinvestigation
andadjustmentofconvergencesbyuseofcenter
cross anddotpatterns.
•The deviceenablesevaluationofhigh-voltage sta-
bility viawindowpatterns.
•The deviceisprovided with a 75ohmvideo output
forvideocomponentsandalltypesofTVmonitors,
anda 75ohmRF output fortelevisionreceivers.
•To facilitateobservationofthevariousTVreceiver
wave formsviaoscilloscoverticalandhorizontal
4
synchronizingsignalscanbeobtained.
•The device'ssynchronizingsignalincludesanequal-
izingpulse,andthedeviceisphase-lockedonthe
sub-carrier wavefrequency.
• In addition tointerlacedscanning,thedeviceallows
switchovertosequentialscanningmode,thereby
enablinga reductioninstripingflickerandsimplifying
relatedinvestigationandadjustmentprocedures.
• Remote controllablemodelsarealsoavailablewhich
enable remoteswitchingofallpatternoptionsusing
the RT-62 remotecontroller.

3. SPECIFICATIONS
®Patterns
Cross-hatch 16x20,whiteonblack with
onedotatcenter-screen,and
displays thecorner-markeron
theupper-left portion ofthe
screen
Center-cross 1x1,whiteonblack,crossed
atcenter-screen,anddisplays
the corner-marker onthe upper-
left portion ofthescreen
Dot15x19,whiteonblack
Window0.5x0.5,whiteonblack
Raster red,blue,green,white
Color(Seediagramonpage16)
CG-931 EIA: RS-189A standard
SMPTE: ECR-1-1978 standard
CG-932 BARS 1:2 minuteincrements
BARS 2:3 minuteincrements
I.Q.W.OFFFull-fieldcolorbars
[PAL: U.V.W.]
CHROMA OFFLuminance-onlypattern
obtainedbyremoving
chrominancecomponent from
colorbarsignal
LUMI OFFChrominance-onlypatternob-
tainedbyremovingluminance
component from colorbar
signal
(DVideoOutput
Output levelCAL:1.0V p-p(under75ohm
load)
VAR: 0-1.5V p-p(under75
ohmload)
Output impedance750
PolarityPositive(synchronizingsignal
negative)
(DS Output
Output level:(under75ohmload)
Y+ S
C
CAL 1
Vp-p
(SYNC-100% white) 286[300]mVp-p(burst)
VAR +
/-20%
+ /-20%

(DIFOutput
Modulation method:Negativemodulation
Image frequency:
CH
Japan
CH (MHz)
USA
CH (MHz)
A CH2 97.25
CH5 77.25
B CH3 103.25
CH6 83.25
CG-932
CH
Western Europe
CH (MHz)
Italy
CH (MHz)
Australia
CH (MHz)
A
CHS55.25
CHA 53.75
CH1 57.25
B CH4 62.25 CHB62.25
CH2 64.25
NewZealand
CH (MHz)
England
CH (MHz)
CH2 55.25 CH71 495.25
CHS62.25
CH77 543.25
Outputlevelabove60 dB/x
Outputimpedance75ohm
(D Synchronizing SignalOutput
Frequency Horizontalandverticalfrequen-
cies
OutputvoltageAbout1 V p-p (output terminal
open)
Outputimpedance75ohm
(D Sub-carrier Wave CG-931: 3.579545MHz
Frequency CG-932: 4.433619MHz
(D Sub-carrier Wave
Output
Frequency Center frequency+/-100Hz,
adjustable to within +/-5 Hz
OutputvoltageAbout1 V p-p (output terminal
open)
Outputimpedance75ohm
CD ColorburstMinimum8 cycles atback
porchofhorizontalsynchroniz-
ingsignal
CD Synchronizing Signal
CG-931 (NTSC)
CG-932 (PAL)
Horizontal Scan
Frequency
15.734kHz 15.625kHz
Vertical
Scan
Frequency
Interlace
59.94Hz 50.00Hz
Vertical
Scan
Frequency
Sequential
60.05Hz 50.08Hz
6
CG-931:

®VideoSignal Output Level
CG-931 (NTSC)
75%
white
yellow
cyan
green magenta red blue
Brightness
component
+ /-5% (IRE)
77 69 56 48 36 28 15
Chromalevel
+ /-5% (IRE)
62 88 82 82 88 62
Chromaphase
+/-5 (deg) 167 283 241 261 103 347
Q -I burst black
sync
signal
level
Brightness
component
+ /-5% (IRE)
7.5 7.5 0 7.5 40
Chromalevel
+ /-5% (IRE)
40 40 40
Chromaphase'
+ /.-5 (deg) 33 303 180
CG-932 [PAL]
100%
white
75%
white
yellow
cyan
green magenta red
Brightness
component
+/-5%(mVp-p) 700 525 465 368 308 217 157
Chromalevel
+/-5%(mVp-p) 470 664 620 620 664
Chroma
phase
+/-5 (deg)
+ V
167 283 241 61 103
Chroma
phase
+/-5 (deg) -V 193 77 119 299 257
blue U
V burst black
sync
signal
level
Brightness
component
+/-5%(mVp-p) 60 0 0 0 0 300
Chromalevel
+/- 5% (mVp-p) 470 300 300 300
Chroma
phase
+ /-5 (deg)
+ V
347 0 90 135
Chroma
phase
+ /-5 (deg)
-V 13 0 270 315
©LevelControl
CHROMA Level
The rasteror color barchrominancelevelcanbe
variedovera rangeof+/-20%.
However,themaximumvalueforthe amplitude of
theyellowandcyan color barsignalscanbepreset
togivethesamelevelasthe100% white signal.
LUMINANCE Level
The luminancelevelofallpatternscanbevaried
overa rangeof20%.However,the white signalin
theraster mode canbepresetto100%.
SETUP Level
The setuplevelofallpatternscanbevariedovera
rangeof0-10%.However,theblacklevelcanbe
presetto7.5%.
©RemoteOperation(RemoteControl Option)
Patternswitching:4 bitBCD(negativelogic)
Switchingbetween
panelandremote:1 bit(negativelogic)
Remote control: 1 bit(negative logic)
7
Tolerance: ±5%or3 IRE(21mV),whicheverisgreater, with the
100% white signalasreference.

4.PANELEXPLANATION
FRONTPANEL
8
©PowerSupply
SupplyVoltageAC100/120/220/240V,
+/-10%(max.250V)/
50/60Hz
Power About 17 W
Consumption
®Temperature
within
specification10~ 35C°,RH85%max.
full operation0 ~ 40C\RH85%max.
©Dimensions212(W)X133(H)X272(D)mm
Max.212(W)X156(H)X298(D)mm
© Weight 3.5kg
©Accesories
Power cord 1
Connecting
chord (CA-41)1
(BNC-Wormclip)
Instruction Manual1
Fuses 2

® POWER
The power ON/OFF push-switch-.Whendepressed,
the LED lightsupandthemachineisintheoperating
state.
(2) RFCHANNELSwitch
The channelchangingswitchusedwhenthe
televisionreceiverisreceivingpatterns from the
patterngenerator.TheswitchselectsChannelA
whendepressedandChannelB whenreturnedto
theupposition,anditcanreceive allofthe
designatedpatterns.
(DOUTPUT(RFSignalOutput)Terminal
The terminalthatoutputstheRFsignalselectedby
theRF CHANNEL switch(#2above).Ithasan
output impedanceof75ohmandan output voltage
ofover10V rms(when output terminalisopen).
®RFON/OFFSwitch
Switch for turning theRFsignalONand OFF. Itis
used whenthe RF signalisnotbeingutilized.When
theswitchisdepressed,theRFsignalisON.
®SCANNINGSwitch
Switches between INTERLACE scan and SEQUENTIA
Lscan. The switch selects thesequential(progressive)
scanning modewhendepressed,andtheinterlace
scanning modewhenreturnedtotheupposition.
Whenperformingadjustmentandtestingproce-
dures, usethe INTERLACE modeforcolorpatterns
and, formonochromepatterns, use the SEQUENTIAL
modetoreducetheoccurrence * horizontalflicker.
(DRasterSelectSwitch
Switch forselectingtherastercolor.Moving from
left to right, thisswitchenablesselectionofred,
blue,green,orwhite(brightness 100%). Theraster
whiteisrepresentedbywhite with a brightnesslevel
of100%.Whena blackrasteris required, turn the
patternselectorto "COLOR" and turn thecolor
selectors to"CHROMA OFF" and"LUMIOFF."
(D SYNC Switch
Switch forchangingthesynchronizingsignal.When
theswitchisdepressed,a vertical sync signalis
output viathe OUTPUT terminal(#8),andwhenthe
switchis returnedtotheupposition,a horizontal
sync signalis output viatheterminal.When
adjustingorrepairingcolorTVreceiversusingan
oscilloscope, usethisswitchwhenyouwantto
forcesynchronizationalongonespecific axis
(horizontalorvertical).
(DOUTPUT (Sync. SignalOutput)Terminal
Outputterminalforthe sync signalselectedbythe
SYNC Switch(#7).Theterminalhasan output
impedanceof75ohmandan output voltageof
about1 V p-p(when output terminalis OPEN).
9

FRONT PANEL
(DVIDEO OUTPUT
The video output terminal.Theterminalhasan
output impedanceof75ohm.It outputs composite
videosignalsconsistingofsynchronizing,blanking,
burst,andthevariouspatternsignalcomponents.
Polarityispositive(thesynchronizingsignalis
negative).
10
®VIDEO LEVEL
Turn-knobforvaryingthevideo output level. This
knoballowsthevideo output leveltobevaried from
0- 1.5V p-pand,whenturnedallthewaytothe
left (CAL), asignalof 1 V p-pcanbeobtainedviathe
output terminal.
©S Terminal
The Y,C separation output terminal.
1: Y GND
2: C GND
3: Y SIGNAL
4: C SIGNAL
@ Y LEVEL
The Y componentoftheS output canbevariedover
a rangeof+/~20%bymanipulationofthecorre-
spondingturn-knob.Itiscalibratedwhileturnedall
thewaycounterclockwise.
©C LEVEL
The C componentoftheS output canbevariedover
a rangeof+/~~20%bymanipulationofthecorre-
spondingturn-knob.Itiscalibratedwhileturnedall
thewaycounterclockwise.
©SET LEVEL (SETUP)
Whenthissemi-fixed turn-knob isturnedclockwise,
thesetuplevelofthevideosignalcanbevariedover
a rangeof0-10%.Ifthisknobisturnedalltheway
inthecounterclockwisedirection (CAL), theblack
level iscalibratedto7.5%.[calibratedto0%forthe
CG-932]
~1
2
-3
4-

© SET LEVEL (CHROMA)
When thissemi-fixedturn-knobisturnedclockwise,
thechrominancelevelofthecolorsignalcanbe
varied overa rangeofabout+/-20%.During
ordinary use, thisknobshouldbeturnedalltheway
inthecounterclockwisedirection (CAL).
©SET LEVEL (LUMINANCE)
When thissemi-fixedturn-knobis turnedclockwise,
theluminancelevelofthecolorsignalcanbevaried
over a rangeofabout+/-20%.Duringordinary
use, thisknobshouldbeturnedallthewayinthe
counterclockwise direction (CAL).
NOTE: ————^—-
Manipulationofsemi-fixedturn-knobs14 through
1 6 resultsinchangesintheRFmodulationfactor.
To achievetheoptimalmodulationfactor,make
youradjustmentssothatthe VIDEO OUTPUT
terminal(#9)givesan output of1 V p-p(the VIDEO
LEVEL (#10)shouldbesetto CAL).
© CROSS HATCH
When this button ispushed,thescreendisplaysa
16x 20linewhite-on-black cross-hatched rectangle
with onedotatthecenter.
® CENTER CROSS
When this button ispushed,thescreendisplaya 1
x 1 linewhite-on-blackcenter cross.
©DOT
When this button ispushed,thescreendisplaysa
15x19,white-on-blackdotpattern.
©WINDOW
When this button ispushed,the screen displaysa 0.
5x0.5white-on-blackwindowpattern.
® RASTER
When this button is pushed,thescreenbecomesa
-rastergrid,whosecolorcanbeselected(red,blue,
green, orwhite)viatheselectorswitch(#6).
© COLOR
When this button ispushed,theupperpartofthe
screen displaysthecolorbar,andthelowerpart
generates Q,-1[U,V], white,andblacksignals.
: This isthestandardcolorbarusedinthetestingand
adjustmentofimagedevicesincludingcolorTV
receivers, black-and-whiteTV receivers, and VTRs.
© I.Q.W. [U.V.W.]OFF
When this button ispushed,thegreenlamponthe
upper portion lightsupand,inplaceoftheQ,-I,
[U, V],100%white,andblackcolorpatternsignals
set upinthe COLOR (#22)mode,a colorbaris
inserted into thelowerhalfofthescreentogivea
full-field colorbar.Ifthis button ispushed again, the
screen displays a splitcolorbar with -1, Q,[U,V],
white,andblacknserted,andthegreenlampcuts
off.
11

FRONT PANEL
®CHROMAOFF-..-
When this button ispushed,thegreenlamp,onthe
upper portion lightsupandthechrominancecompo-
nentis removed.Ifthe button ispushedagain,the
screen returns tothepreviousstateandthegreen
lampcutsoff.
©LUMI.OFF
When this button is pushed,thegreenlamponthe
upper portion lightsupandtheluminancecompo-
nentofthecolorpatternisremoved.Ifthe button is
pushed again,thescreenreturnstotheprevious
state andthegreenlampcutsoff.
® BARS SELECTOR
For the CG-931: Switchesbetweena ElA RS-189A
standard colorbaranda SMPTE
specificationcolorbar.,
For the CG-932: Selects oneoftwodifferentsplit
color bars.
NOTE: ^ ^ ^ —
Switches ©-®operateindependently,andthey
have nobearingonanycolorpatternotherthanthe
colorbar.
12

REAR PANEL
®SUB CARRIER
The square waves ofthecolorsub-carrierare out-
put, with an output impedanceof76ohmandan
output levelofabout1 V p-pwhenthe output
terminalis OPEN.
®Y+S
The luminance output oftheS terminalonthe front
panelis output viatheBNCterminal.
®CHROMA•
The chrominance output oftheS terminalonthe
front panelis output viatheBNCterminal.
® REMOTE
AnAmphenol24-pinconnectorutilizedwhenthe
device iscontrolledremotelyusingthe RT-62. This
connectoris installedonlyinmodelswhichare
equippedfor use with the RT-62. Othermodelshave
onlya blankplate.
® Fuse Holder/SupplyVoltageSwitch
The fuseholdercontainsa 0.7A fuseforusein100
V and120V regions,anda 0.3A fuseforusein220
V and240V regions.Fordirectionsregardingfuse
replacement,pleaseseeSection7,"Maintenance."
The presetsupplyvoltageofthedeviceisindicated
• ontheupper portion ofthesupplyvoltageswitch,
belowthemark.Fordirectionsregardingresettingof
thesupplyvoltage,pleaseseeSection7,"Mainte-
nance/'
®PowerSupplyInputConnector
•Connectorfor input oftheACpowersupply.
®ChannelSpecificationPlate
The RF channelsA andB aresetasindicatedonthe
Channel Specificationplate.
®VoltageSpecificationTable
Indicates theratedvoltageandfusespecifications
.forthedevice. Please comply with thedesignated
supplyvoltageandfusespecification values.
13

5. PRECAUTIONSUSE 6.DIRECTIONSFOR USE
ODonotusethedeviceinanyplacesubjectedtodirect
sunlight,asthismay cause theinternaltemperature
to rise, resultinginunstableoperation.Insome
cases, thismayalsoresultindamagetotransistorsor
ICs inthedevice.
OA voidusingthedeviceinlocationssubjectedto high
temperaturesor humidity.
ODonot use thedeviceinlocations that areparticularly
subjecttovibrations, as thismay cause misoperation.
OUse thedevice with anACpowersupply that supplies
a voltagelying within +/-10%ofthedevice'srated
voltage.Thesupplyfrequencyshouldbe50/60Hz.
ODonotapplyvoltagesexternallytoanyofthe output
terminals(RF OUTPUT, SYNC OUTPUT, VIDEO
OUTPUT, SUB CARRIER, etc.).
OWhenconnectingthedevice into a TVreceiver,to
avoidelectricalshock,besuretoremovethereceiv-
er's electricalcord from theACsocket.
OWhenoperatingthepush-buttons,pushgentlyon
thecenterofthebuttons.
OWhenusingthedeviceinconnectiontoa TV
receiver, besuretomatchthedevice'sRFchannel
correctlyto that oftheTVreceiver.
ACHIEVINGOPERATION
Plug thepowercord into anACsocket AFTER youhave
madesure that thevoltageofyourpowersupply
matches thevoltagetowhichthe SUPPLY VOLTAGE
switchontherearpanelisset. Push the POWER switch
(1). The POWER LED will light upandthedevice will
entertheoperatingstate.Atthis point, thepattern
selected viathe push-button will display.
CONNECTING TOA TV RECEIVER
Whenusingthedevicefortheadjustment,investiga-
tion,orrepairofTVreceivers,pleasebecarefulofthe
following points.
1) Disconnectthefeederorcoaxialcable from the
ANTENNA terminalofthereceiver.
2) Checkthecharacteristicsandimpedanceofthe
ANTENNA terminal.
3) Checkwhetherornotany high voltagesorAC
voltagesareleakingtotheANTENNAterminal.If
thereisa leakagevoltage,connectthedeviceviaa
condenserhavinga proof voltagecorrespondingto
thisleakage(10-1000pF).
14
I) 750
Red
Black
Gorund
Antenaterminal750
TV receiver
3000:750
Balun
Antena+°rminal|
10 | or
IT)300O
Antena
terminal
3000
1000

PATTERN USAGE
1) Cross-Hatch
The centerdotisusedtoadjustthestaticconver-
gence ofthepicturetube.Thecross-hatchpatternis
used foradjustmentofthedynamicconvergence,
andfortheadjustment,investigation,andremedia-
tion ofrasteralignmentparameterssuchasvertical
andhorizontalamplitude,andverticalandhorizontal
linearity.
2) Center-cross
Used forthepicturetube'shorizontalandvertical
positionadjustment.
3)Dot
Used foradjustmentofthepicturetube'sstatic
convergence andfocus.
4) Raster
The red,blue,andgreenrasterpatternsareusedto
adjustandconfirmcolorpicturetube purity.
5) Window
Used fortheadjustmentofvideocircuits,andfor
theevaluationofhigh-voltagestability.
6) ColorBar
a. SplitColorBar(SetColorSelectorto"ON" Posi-
tion)
Used foradjustmentofCHROMAcircuitsand
ACC (automaticcolorcontrol)inTVreceivers,
andforsettingofCHROMAlevels,ACC,
CHROMA levelbalance,andburstgate(ampli-
tude,phase)in VTRs.
b.Full-FieldColorBar(SetI.OW.[U.V.W.]to"
OFF")
Used whentheQ,-I[U,V]andwhitesignals
are notrequiredforoperationssuchasadjust-
mentof"a"above.
c. Gray Scale
Gray scale patternscanbeobtainedbyremoving
thechrominancecomponent from thecolorbar
(bypressingtheColorSelector"CHROMA OFF"
button) todisplayonlytheluminancecomponent.
These patternscanbeusedfortheadjustment,
investigation,andrepairoflinearity,whitebal-
ance, andotherparameterscrucialinimage
amplificationindevicessuchasTVreceiversand
VTRs.
d. CHROMASignal
The chrominance-onlypatterncanbeobtained
byremovingtheluminancesignal from theColor
Bar (bypressingtheColorSelector"LUMIOFF"
button). This patterncanbeusedtoinvestigate
CHROMA signallevelsandphasechangesas
relatedtoimageamplification.
e. Black burst
Removal oftheluminanceandchrominance
component from the full-field colorbarsignal
results ina "blackburst"signalcontaining COM-
POSITE SYNC and SETUP components.
f.Composite sync
Iftheluminanceandchrominancesignalsare
removed from thesplitcolorbar,theresultisa
signal containingonlythe COMPOSITE SYNC
and SETUP com-^nents.
15

COLOR BAR SIGNAL
EIA COLOR BAR (BARS 1) SIGNAL
SMPTE COLOR BAR (BARS 2) SIGNAL
16
75%
GRAY
YELLOW
Z
<
>-
o
GREEN
z
o
<
ED
BLUE
25% - 1
WHITE
+0 BLA(
67%
GRAY
YELLOW
2
?
O
z
ui
&y
Q:
e>
MAGENTA
RED
BLUE
8%
blu blk mg btk c
btk w
25%
- I
W
0
BLACK

REMOTE OPERATION
(RemoteControlOptionOnly)
The pattern generatorcanbeoperatedremotelyusing
the RT-62 RemoteController,whichissoldseparately.
Allcombinationsofpatternscanbeselectedby
switchingamongsettings1 through 16.Fordetails,
please refertothe RT-62 InstructionManual.
CONTROL SIGNALS
REMOTE SWITCHINGREMOTECONTROL
Panel H
Remote L
Controllable
L
Non-controllable
H
PATTERN SWITCHING
RT-62 Pin
Number ControlSignal Combinationsof
PatternSignals
RT-62 Pin
Number
A B C D
Combinationsof
PatternSignals
1 L H H H ®
2 H L H H ®
3
L L H H ®
4 H H L H ®
5
L
H L H ©
6 H L L H ©
7
L L L H ©
8
H H H
L
(D
9
L H H L
©
10 H L H L
®+©
11 L L
H
L
®+©
RT-62 Pin
Number ControlSignal Combinationsof
PatternSignals
RT-62 Pin
Number
A B C D
Combinationsof
PatternSignals
12 H H L L
®+©
13 L H L L
®+ © + ©
14 H L L L
®+©+(0
15
L L L L
(D+@+(0
16 H H H H
®+®+©+@
© CROSS HATCH
® CENTERCROSS
®DOT
©WINDOW
© RASTER-R
© RASTER-G
© RASTER-B
® RASTER-W
® COLOR
®I.Q.W.OFF
©CHROMAOFF
©LUMIOFF
CONNECTOR PINHOOKUP
Pin Number
Signal Pin Number
Signal
1 A 1
RemoteControl
2
B
10
Remote Switching
3 C 11
GND
4
D 12
+ 5 V
NOTE: +5V isforthe RT-62 LED, upto10mA.
17

7.MAINTENANCE
.Caution: Readthispagecarefullyto keepyoursafety.
For ElectricShockProtection:
Be suretodisconnectthepowercable from thesocketbeforeconductingthefollowingoperation.
PEPLACING THE FUSE
In case thefusehasblown,locatethe cause. Ifthefuse
itselfisthe cause, replaceita follows:
1. Pullthe plug ofthepowercord from thepower
outlet.
2. Removethefuseholderintherearpanelusinga
standardscrewdriver.
3. Take outthe blown fuse,andinitsplace,inserta
new fuse.
4. Setthelabelofyourlinevoltagetothemark•,then
plug thefuseholdercontainingthenew fuse into the
rear panel.
CHANGINGTHE SUPPLY VOLTAGE
Remove thefuseholderintherearpanelusinga
standardscrewdriver.Thensetthelabelofyourline
voltagetothemark• and plug thefuseholderback
into place.Whenchangingthesupplysetting from
100/120 V to220/240V,changethe0.7A fusefor
a 0.3A one.
18
Fuse holaer

8.ADJUSTMENT
WARNING
THE FOLLOWING ADJUSTMENT INSTRUCTIONS
ARE FORUSEBY QUALIFIED PERONNEL ONLY.TO
AUOID PERONAL INJORY. DONOT PERFORM ANY
SERVICING OTHER THAN THAT CONTAINED INOP-
ERATING INSTRUCTIONS UNLESS YOUARE QUALI-
FIED TODOSO.
1) Removingthe case
Usinga Phillip'sscrewdriver,removethe7 screws
locatedonthetopandsidepanels.
2) Adjustingthesub-carrierfrequency
Connecta countertothesub-carrier output onthe
rear panelandadjustC17usingtheinsulated
adjustmentrod.[Forthe CG-932, adjustC12.BE
SURE NOTTO TOUCH C17.]
C17 AdjuststhesubcarrierfrequencyintheCG-
931 . Besurenotto touch this trimmer inthe
CG-932.
C1 2 Adjuststhesub-carrierfrequencyintheCG-
932. This trimmer isnot provided intheCG-
931.
VR15 -Adjuststhe RF frequencyforCHA.
VR16 ••-AdjuststhefrequencyforCHB.
19
Front

9.OPTIONS
3) Adjustingthe RF frequency
OSet the PATTERN switchto "COLOR" andswitchthe
LUMI OFF andCHROMA OFF switchesto"ON".
OSet theRFswitchonthe front panelto"ON"and
connecta countertothe output terminal.Adjust
VR15 for CH A andVR16forCHB.Itthe RF levelis
lowerthanthecountertriggerlevel,introducea high-
frequencyamp into theconnection with thecounter.
OBe suretousea terminalresistanceof75ohms.
RT-62RemoteController
A hand-heldcontrollerthatallowsremoteoperationof
theinstrumentation.Thecontrollercontainstwocon-
trol systemswhichuse 4-bit binarysignals,andit
allows switchingtobeaccomplishedamong16ranges
andmodesinasmanyaseightsteps each. Inaddition,
oneofthecontrolsystemscanbeprogrammedto
accommodatea 16-stepmode,whichcanbeselected
bya push-switch.
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