General; Description - Promax GV-798+ Instruction Manual

Colour pattern generator GV-798+
COLOUR PATTERN GENERATOR

1 GENERAL

1.1 Description

The GV-798+ colour pattern generator is used for control and measurements,
maintenance and repair of TV and video equipments. Its application areas are
development, quality control, TV production studios, service workshops and training.
This instrument covers the frequency range from 37 to 865 MHz, with Vestigial
Side Band modulation.
It generates digitally 16 basic pattern charts, which extend to 22 when pushing
repeatedly the chart keys.
Colour signals can be codified in PAL (B/G/I/D/K/M/N systems), NTSC (M
system) or SECAM (L/D/K systems).
The GV-798+ incorporates VITS signals (Vertical Interval Test Signals) in CCIR,
UK and FCC formats, WSS signal (Wide Screen Signaling) in 8 formats, FLOP-
TELETEXT in four languages and VPS and PDC signals for four countries. All these
signals are individually selectable.
It also provides a synthesised sound modulator for all the systems previously
described. Besides it incorporates the ZWEITON stereo-dual system in B/G/D/K/M
format and NICAM in B/G/I/L format.
It incorporates 32 memories where different configurations may be stored for a
later easy access by means of the rotary selector. All configurations may be selected
through the combination of the rotary selector and three keys, visualising its contents
on a graphic display.
The RF signal can be selected by channel or by frequency, in 50 kHz
increments and can be attenuated in progressive steps of 1 dB. Channel/frequency and
attenuation information is shown on the graphic display.
It also includes a BLACKBURST output (PAL and NTSC), video input and
output, SCART connector, S-VHS connector, output for two fixed tones (1 kHz and 3
kHz), sound input for left and right channels with possibility of ZWEITON modulation,
output for complete synchronism, output for vertical and horizontal pulses with polarity
selectable, output for RGB or Y P
green or on luminance signals and It's also available a connector for remote control
with the RS-232C bus.
06/2016
GV-798+
P signals with possibility of adding synchronism on
b r
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