Kenwood CG-921 User manual

NTSCCOLORPATTERNGENERATOR
CG-921
PALCOLORPATTERNGENERATOR
CG-922
INSTRUCTION MANUAL
KENWOOD CORPORATION
C PRINTEDIN^AN
KENWOOD

CONTENTS
1. GENERAL3
2. FEATURES 3
3.SPECIFICATIONS • 4
4. PANELEXPLANATION• 6
5. OPERATINGPROCEDURE9
6. PRECAUTIONSFORUSE14
2
A product of
KENWOODCORPORATION
1 7-5, 2-chome, Shibuya, Shibuya-ku, Tokyo 150,Japan

1. GENERAL
2. FEATURES
Thecolorpatterngenerator, CG-921(or CG-922), is
a test patterngenerator that generates theoptimum
signal forthe adjustment service tothe television or
VTRintheNTSC mode (or PAL-B, G,orHmode).
This generator is smal1 and 1ight-weight andits
size issameas that ofour multi-meter, DL-712. It
is operated by batteries oran external DCpower
supply.
$Operationisveryeasy.
® The generatorisoperated by four UM2 batteries.
# Small and light-weight
# Al1 radio frequencies including VHFandUHFare
covered.
$ The radio frequency canbe changed onthe paneL
® The regular synchronizat ion signals including
the equalizing pulse and cut-in pulse are output.
•.'.') TheRF output sound carrier canbe turned onand
off.
3 The corner marker isprovided inthe cross hatch
pattern.
W Although CG-922is applied toPAL-B,G,orH,
generators for PAL-I and PAL-D are also available.
3

3. SPECIFICATIONS
CG-921
' G-922
[Video mode] NTSC
mode
PAL mode
[Video output]
Outputconnectoi
RCA pinconnector
Output ievel
Video
714mVp-p (75 Q terminated)
700mVp-p (75Q terminated)
Output ievel
Synchroni-
zation
286mVp-p (75Q terminated) 300mVp-p (75Q terminated)
! [Synchronous signal]
Horizontal synchronous
frequency
15. 734kHz 15. 625kHz
:Vertical synchronous
frequency
59. 94Hz
50. 00Hz
! Sub-carrier frequency
3. 579545 MHz ± 200Hz
4.43361875MHz± 200Hz
[RF output]
! VHF LOW
CH.in Japan 1-3 CH.in USA2-6
CH.in West Europe 2-4
! VHF
HIGH
4-12 7-13 5-12
UHF
13-62 14-83
21-69
Outputconnector F connector PAL connector
Output feve!
VHF: 1 mVor more (75Q terminated) UHF: 0. 5mVor more (75Q terminated)
[Sound]
Sound carrier frequency 4. 5MHz
5. 5MHz
Sound frequency
Approximately 1kHz
Sound carrier output
Toggling between ONandOFF pc; J ;
4

CG-921 CG-922
[Pattern]
Cross hatch 15(V)x11(H)withcorner
marker
Dot 1500 x 11(H)
W i ndow
White on the black background
Brightness order full-field
color bar
White 05%), ye 1 low, cyan,green, magenta, red, blue,black
White raster
100% white
Red raster
Green raster
Blue raster
[Power supp1y] Four
UM2 batteries
External power supp1y
DC 6V, 80mA or more (Max. 15V)
Battery 1ife
Manganese
battery
Approx. 25 hours (at RF OFF), Approx. 15 hours (at RFON)
Battery 1ife
Alkali battery
Approx. 80 hours (at RF OFF), Approx. 40 hours (at RFON)
[Weight] Approximately
760g (includingbatteries)
[Dimentions] Flame
dimentions
162x60x130mm (width/height/depth)
[Dimentions]
Maximum
dimentions
185x63x147mm (width/height/depth)
[Operating temperature/
humidityrange]
0-40°C 80%RH or less
1 [Within specification
temperature/humidityrange] 23-5°C
80%RH or less
[Accessories]
Instruction manual 1,RCA pin cord 1, Antenna cord 1
5

4. PANELEXPLANATION
6

® POWER Switch
Power switch. If this switchispressed, theLED
1ights andthe generator becomes operational.This
switch should be pushed off whenever the generator
is putout offbatteryoperation.
© POWER LED
If this LED lights, power is on.
© VIDEO OUT Terminal
Video signal output terminal. The output voltage is
1Vp-p when terminated with 75Q.
© RFOUT Terminal
This output pin AM-modulates the video signalinto
the RF signalfor output. All channels ofLOWand
HIGH ofVHFandUHF are coverd.
© Tuning Dial
This dial changes the RF signal channel.
© RFON/OFF Switch
ON/OFFoftheRF signaliscontrolled. When this
switch isON,theRF signal is output from
RF OUT in @.
® VHF/UHF Switch
The frequency band of the RF signalis switched.
® VHF HIGH/LOW Switch
Thisswitchis valid only when VHFhas been selected
by VHF/UHF switch ®. With these two switches
(® and ®), changeover to three bands; VHF
LOW/HIGHand UHF,is done.
© SOUND ON/OFF Switch
ON/OFFofthe sound carrier intheRF signal is
controlled.
®PatternSelector Switches
Thisswitch selects from eightpatterns. From left to
right, cross hatch, dot, window, colorbars, white
raster, red raster, green raster, and blue raster-
are provided.
© EXT Power Terminal
External DC power supply inputterminal.
External DC power supply should be nominally 6 V,
80 mAor more.
7

® Battery Case
This casecontains batteries. Four UM2 batteries
are used.The polarity is indicated inside the
battery case. If batteries arenotset correctly, the
generatormaybetroubled.Therefore, care must be
taken.
Either manganese or alkali, batteries canbeused.
Topreventthe bateries from consumption, turnoffthe
power supply when thegeneratorisnotused.
The battery life islongerinthe intermi ttent
operation thanthecontinousoperation.
When the battery capacity becomes smaller over time,
the screen image may waver ordecreaseinamplitude,
ornopatternmaybe displayed. Replacewithnew
batteries insucha case.
The polarity shouldbeas shown below.

5. OPERATINGPROCEDURE
5-1 CAUTION
Follow the instructions inthe operation manualfor
the television orVTR when the television orVTRis
adjusted by using this generator. Donot touch the
primary power supply andthe high-voltage power supply
of the television.
5-2 CONNECTING METHOD
• When VIDEOOUTof this generatoris connected tothe
videoinput ofthe television orVTR:
Connect ionshould bedoneby using the attached
pin code ifthe inputterminal ofthe television
is a pin jack.
If the inputterminal ofthe television isBNC,
use theBNC/pin conversionadapter.
9
RCAPin cord
Television
Inputterminal ofthe video

• When RFOUTof this generatorisconnected totheRF
input ofthe television:
If theRF input ofthe television isthe aerial
connector,connectionshould bedoneby using the
attached antennacord.
Otherwise,prepare the converter.
Beforeconnection,check whether the high-voltage AC
power leaks tothe antenna terminal. Ifthepower
leaks, connectionshould bedoneviathe capacitor
with the dielectric strenghtcorresponding tothe
voltage.
Antenna cord
Input terminal oftheRF
Television

5-3 USEOF EACH PATTERN
DOTPATTERN
Gridpatternwith 15 vertical lines and11
horizontal lines.
11 is used to adjust the 1ineari ty, focus, and
convergence. Since the corner markeris provided,
whether the polarity is corrected canbe judged
after the polarizing yoke has beenchanged.
Dot patternwith 15 vert ical dots and11
horizontal dots.
11 is used to adjust the 1ineari ty, focus, and
convergence.
11
CROSS HATCH PATTERN

WINDOW PATTERN
COLOR BARSPATTERN
BLACK
WHITE
Used to adjust the video circuit orto evaluate
stability of the high voltage.
Full-field colorbars. Itis used to adjust the
chroma circuit.
12
GRAY
YELLOW
CYAN
GREEN MAGENTA
RED
BLUE
BLACK

WHITERASTERPATTERN
RED, GREENand BLUE RASTERPATTERNS
Used to adjustpurity of colors onthe television.
Used to adjust the whitebalance or brightness of
the television.
13
WHITE

5-4 RFOUTPUT
6. PRECAUTIONSFOR USE
• Connect accordingto5-2.
• Turn on the RFON/OFF switch © on thepanel.
• Select the desired band using the band selecting
switches © and® on thepanel.
• Select the desired channel using the tuning dial
® on thepanel.
• Turn on the SOUND ON/OFF switch ® if the sound is
needed.
•The sound frequencyisapproximately 1 kHz. The
modulation level is approximately 25kHzfor
CG-921 and approximate 50kHz for CG-922. The sound
sub-carrier is 4.5MHz for CG-921 and55MHzfor
CG-922.
$Before an external DC power supp ly is used,
check the polarity of theplug. On this generator,
theoutsideis ©.
If theplugwithreversed polarity is connected,
thegenerator and external DC power supply may
bedestroyed.
# In case the generator hasa trouble, call the
sealer orour service sectionfor repair.
# The attachedbatteryshould be replacedwith a
battery thatcomplieswiththeIECStanards.

BROADCASTING SYSTEM
Standard broadcasting mode
B
G,H
1 1
Number of scanning 1ines
825 825 825 825
Channe1 band width 7
MHz
8 MHz
8 MHz
6 MHz
Fs (sound) -Fp (video) +5.5MHz
+5. 5MHz +6 MHz
+4. 5MHz
Sound modulation method F3 (±50kHz)
F3 (±50kHz) F3 (±50kHz) ' F3 (±25kHz)
Color system PAL PAL PAL
NTSC
Country
West Europe (VHF)
Australia
New Zealand
West Europe (UHF)
Australia (UHF)
United Kingdom (UHF)
Ireland
Republic of
South Africa
Tanzania
Hong Kong
Japan
USA
Korea
Canada
Taiwan
15

VHF BROADCASTINGCHANNELS
CG-921
fs-fp = 4. 5MHz
CG-922
fs-fp = 5. 5MHz
16
ChanneIs in Japan ChanneIs
in USA
ChanneIs inWest Europe
ChanneIs in Italy
CH. No.
Video
frequency
MHz
1
91. 21
2 97. 25
3
103. 25
4
171.25
5
177. 25
6
183. 25
7 189. 25
8 193. 25
9 199. 25
10 205. 25
11
211.25
12
217. 25
CH. No.
Video
frequency
MHz
2
55. 21
3 61.25
4
67. 25
5
77. 25
6
83. 25
7 175. 25
8
181. 25
9
187. 25
10 193. 25
11
199. 25
12 205. 25
13
211.25
CH. No.
Video
frequency
MHz
1
41.25
2
48. 25
3
55. 25
4
62. 25
5 175. 25
6
182. 25
7 189. 25
8
196.25
9
203. 25
10
210. 25
11 217.25
12
224. 25
CH. No.
Video
frequency
MHz
A 53. 75
B
62. 25
C
82. 25
D
175. 25
E 183. 75
F 192. 25
G 201. 25
H 210. 25
H1 217. 25
H2
224. 25

GC-922
fs-fp = 6MHz
fs-fp = 6.5MHz
fs-fp = 5. 5MHz
17
CH. No.
Video
frequency
MHz
1 45.25
2
55. 25
3
62.25
4
175. 25
5
182. 25
6
189. 25
7
196. 25
8
203. 25
9
210. 25
CH. No.
Video
frequency
MHz
A 45. 75
B 53. 75
C 61.75
D 175. 25
E 183. 25
F 191.25
G
199. 25
H 207. 25
J 215. 25
CH. No.
Video
f requency
MHz
4
175. 25
5 183. 25
6 191.25
7 199. 25
8
207. 25
9
215. 25
10
223.25
11
231.25
12
—
13
247. 43
CH. No.
Video
frequency
MHz
1
49. 75
2 57. 75
3 65. 75
4
77. 25
5 85. 25
6 168. 25
7 176. 25
8
184.25
9
192. 25
10
200.25
11
208. 25
12 216.25
CH. No.
Video
frequency
MHz
0
46. 25
1
57. 25
2 64. 25
3
86. 25
4
95. 25
5
102. 25
5A
138. 25
6
175. 25
7
182. 25
8 189. 25
9 196. 25
10 209. 25
11
216. 25
fs-fp = 5. 5MHz
fs-fp = 6MHz
ChanneIs in New ZeaI and
ChanneIs in I re I and ChanneIs inSouth Africa
ChanneIs in China ChanneIs
in Australia

UHF BROADCASTINGCHANNELS
CG-921
Channels in Japan/USA
fs-fp = 4. 5MHz
18
Japan USA Video frequency
CH. No. CH. No. MHz
(fp)
13 14
471. 25
14 15
477.25
15 16
483. 25
16 17
489. 25
17 18
495. 25
18 19
501. 25
19 20
507. 25
20 21
513. 25
21 22
519. 25
22 23 525. 25
23 24
531. 25
24 25
537. 25
25 26
543. 25
26 27
549. 25
27 28
555. 25
28 29
561.25
29 30
567.25
30 31
573. 25
31 32
579. 25
32 33 585. 25
33 34
591. 25
34 35
597. 25
35 36
603. 25
36 37
609. 25
Japan
USA
Video frequency
CH. No.
CH. No. MHz
(fp)
37 38 615. 25
38 39
621. 25
39 40
627. 25
40 41
633. 25
41 42
639. 25
42 43
645. 25
43 44
651. 25
44 45
657. 25
45 46
663. 25
46 47
669. 25
47 48
675. 25
48 49
681.25
49 50
687. 25
50 51
693. 25
51 52
699. 25
52 53 705. 25
53 54 711.25
54 55 717. 25
55 56
723.25
56 57
729. 25
57 58
735. 25
58 59 741.25
59 60 747. 25
60 61 753. 25
Japan USA Video frequency
CH. No.
CH. No. MHz
(fp)
61 62
759. 25
62 63 765.25
64
771. 25
65
777. 25
66
783.25
67
789. 25
68
795.25
69
801.25
70
807. 25
71
813. 25
72 819. 25
73
825. 25
74
831. 25
75
837. 25
76
843. 25
77
849. 25
78 855.25
79 861. 25
80
867. 25
81
873. 25
82
879. 25
83 885. 25

CG-922
ChanneIs in Europe and Africa
GorH mode
fs-fp = 5. 5MHz
I mode
.fs-fp = 6MHz
United Kingdom Add
47asa channel number.
Germany
• Add39asa channel number.
CH. No.
Videofrequency
MHz (fp)
21
471. 25
22
479. 25
23
487.25
24
495. 25
25
503. 25
26
511.25
27
519. 25
28
527. 25
29
535. 25
30
543. 25
31
551. 25
32
559. 25
33
567. 25
34
575. 25
35
583.25
36
591. 25
37
599. 25
38
607. 25
39
615. 25
40
623.25
41
631. 25
42
639. 25
43
647. 25
44
655.25
45
663.25
CH. No.
Videofrequency
MHz (fp)
46
671. 25
47
679. 25
48 687. 25
49
695. 25
50
703.25
51
711.25
52
719. 25
53
727. 25
54
735. 25
55
743. 25
56
751. 25
57
759. 25
58
767.25
59
775. 25
60
783.25
61
791. 25
62 799.25
63
807. 25
64
815. 25
65
823.25
66
831. 25
67
839. 25
68
847. 25
69
855. 25

CG-922
ChanneI in China
fs-fp = 6.5MHz
20
CH. No. Video frequency
MHz(fp)
13
471. 25
14
479. 25
15
487. 25
16
495. 25
17
503. 25
18 511.25
19
519. 25
20
527. 25
21
535. 25
22 543.25
23
551. 25
24 559. 25
25
607. 25
26
615. 25
27
623. 25
28
631. 25
29 639. 25
30
647. 25
31
655. 25
CH. No.
Video frequency
MHz(fp)
32
663. 25
33
671. 25
34
679.25
35
687. 25
36
695. 25
37
703. 25
38
711.25
39
719. 25
40
727. 25
41
735. 25
42 743. 25
43
751. 25
44
759. 25
45
767. 25
46
775. 25
47
783.25
48
791.25
49 799. 25
50 807. 25
CH. No.
Video frequency
MHz(fp)
51
815.25
52 823. 25
53
831. 25
54
839.25
55
847. 25
56
855. 25
57
863. 25
58
871. 25
59 879. 25
60
887. 25
61
895. 25
62 903. 25
63
911.25
64 919. 25
65
927. 25
66 935.25
67 943.25
68 951. 25