Portable TV Generator


VG-90



This PAL system colour video signal generator has been specially designed for service operation and set up of video systems such as colour monitors with CVS (Colour Composite Video Signal) inputs or R.G.B single inputs with separate synchronism, or include in the G channel. It can be used also in mixing desks,colour decoders and others.

For its pocket format, and the feed by rechargeable NiCd batteries this instrument is specially intended for on-site work, even though its many functions and the supplied AC adapter provide excellent featues to use it as a desk top equipment.

Moreover, it supplies composite synchronism signals and frame pulses independenty, wheter with positive or negative selection. An electronic is included to set up the picture geometry accurately.

GC-981B



The GC-981B colour TV generator is specially designed for PAL system colour TV sets maintenance and calibration at user's homes.

Supplied signals fit to very rigorous norms. They allow to check and control both colour and B/W TV sets. In the new version , a circle picture is included that permits geometry adjustments, as it available in all other pictures.

The design includes up-to-date CMOS technology. Its low consumtion gives enouch range to conver abouat an 8 hour intermittent service.

Its light weight and small size, and the feed by rechargeable batteries allows it to be included in the tool case easily, thus enabling its availability.









SPECIFICATIONS 

GC-981B

R.F outptut
Frequency range              BI           47 to 65 MHz
                             BII          175 to 217 MHz
                             BIV-V        470 to 860 MHz
Output amplitude             5 mV
Output impedance             75 Ohem 
Modulation                   Hegative on double side hand
Sound                        5.5 MHz internal modulated FM



VG-90

Video                         1 Vpp (75 Ohem)
RGB outputs                   1 Vpp (75 Ohem)
Synchronism outputs           
 Frame                        1.5 Vpp (75 Ohem)
 Composite                    1.5 Vpp (75 Ohem)

Signals
 Video with synchronism
 Video without synchronism
 R signal
 G signal G with synchronism
 G sugnal withot synchronism
 B signal
 H+V positive synchronism
 H+V negative synchronism
 Positive frame pulses
 Negative frame pulses



GC-981B/VG-90              

Test pictures               Points, cross hatch,grey scale, red
                            pattern, green pattern, blue pattern,
                            magenta pattern, cyan pattern, yellow
                            pattern, normalized colour bars,
                            electronic circle included in all 
                            pictures

System                      PAL B,G,H (I,D,K optional)
Subcarrier frequency        4.433619 MHz
Line frequency              15611 Hz
Frame frequency             50.30 Hz



Power supply
Internal                    Rechargeable 9 V NiCd battery 
External                    9-12 VCC 85 mA by EXT.
                            PWR connector.
                            UR-9B mains dapter (220 V AC)
Consumption                 0.54 W (battery)
                            0.94 W (external DC supply)



Mechanical features
Dimensions                  W.83 x H.178 x D.34 mm
Weight                      0.35 kg

INCLUDED ACCESORIES
Coaxial cable with TV-75 connector (GC-981B)
3 coaxial cables with BNC/Jack connector (Vg-90)
Carrying bag, Instruction manual
UR-9B unit

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