General; Description - Promax GV-998 Manuel D'utilisation

Colour pattern generator GV-998
COLOUR PATTERN GENERATOR

1 GENERAL

1.1 Description

The GV-998 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.
It allows to generate simultaneously parallel Transport Stream signals with
format ISO/IEC 13818-2 (MPEG2) MP@ML and serial Transport Stream signals with
format DVB-ASI EN/ISO/IEC 13818-1 using a transmission ratio of 270 Mbits/s,
including the DVB faldes PAT, PMT, NIT, SDT and EIT.
This instrument covers the frequency range from 35 to 900 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-998 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, S-VHS input for MPEG-2 signals, 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
signals with possibility of adding synchronism on green or on luminance signals and It's
also available a connector for remote control with the RS-232C bus.
12/2004
GV-998
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