Werbung
Verfügbare Sprachen
Verfügbare Sprachen
nl nena
sscttlesS
telee Selo oss
14
1. General information
1.1. INTRODUCTION
The PM 5509 is a TV Service pattern generator for use in TV/Colour TV Service and Video equipment like
VCR (video-cassette recorders). It features 10 test patterns 5 of them in colour, modulated on an rf carrier
which can be tuned to practically all available TV channels including IF.
The tuning is carried out electronically. Two small meters on the front panel indicate the TV Band in use and
the channel frequency.
Test patterns include a checker board, dots, cross hatch, grey scale and a simple circle pattern for the usual
Black and White alignments. For colour a red pattern, a white pattern, a standard colourbar with white reference
and 1 special test pattern is available. This last pattern enables ''on the screen'' alignment of PAL-delay line and
PAL demodulators. Furthermore the greyscale pattern is combined with definition-lines up to 5 MHz for
checking video equipment e.g. video recorders. For the V.C.R. another special test pattern is used. An eight
step saturation Bar combined with a colour definition-line signal up to 1 MHz.
Chroma (including) Burst can be continuously adjusted from 0 - 100 % and the RF output amplitude is
adjustable to at least 60 dB down, far enough to check the C.T.V. receivers sensitivity.
Sound carrier of 5.5 MHz can be switched off (other frequencies e.g. 4.5 or 6.0 MHz can be choosen by
changing a solder joint inside the instrument). It can also be modulated with the internal 1 KHz sinewave but
external modulation allows the connection of e.g. a record-player or tape recorder. A special DIN-plug for this
purpose is located at the rear side of the instrument.
For a.o. external triggering of an oscilloscope either a field or line-pulse is available. Video output signal is the
standard 1 Volt in 75 ohms. The polarity of the video signal can be changed inside the instrument but is
normally positive. External video-modulation is also possible so that one can use the PM 5509 as a simple
modulator for e.g. camera signals. For connection of a VCR there is a special DIN-plug available on the rear
side of the PM 5509.
1.2. TECHNICAL SPECIFICATION
1.2.1,
Properties expressed in numerical values with tolerances stated are guaranteed by the factory.
Numerical values without tolerances stated represent the properties of an average instrument and merely serve
as a guide.
Test signals
— "CHECKER
BOARD"
: 6x8 squares, accurately centred
— "CIRCLE"
: circle on grey background
— ""CROSSHATCH"
: 11 horizontal and 15 vertical lines
— DOTS"
: 11x15
— "DEFINITION
LINES" and
: 8 sets of definition lines ranging from 0.6 to 5 MHz and a
"GREYSCALE"
staircase signal with 8 identical steps
— "RED"
: Red signal with 50 % saturation
— WHITE"
: 100 % white signal (with alternating burst)
— "DEM"
: Special bar pattern 4 vertical bars: with special encoding
1st bar (G—Y) = 0; 2nd bar grey; 3rd bar (R—Y) NTSC encoded
with alternating burst 4th bar ({B—Y). The 2nd bar and lower
part of the screen are for reference
Werbung
