Table des Matières
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Option TV Demodulator
VIDEO POL
NEGATIVE
VIDEO POL
POSITIVE
625 LINE
SYSTEM
525 LINE
SYSTEM
PICT/SOUND
OFFSET
TV DEMOD
OFF
1088.7531.12
The soft keys VIDEO POL NEGATIVE and VIDEO POL POSITIVE determine
the polarity of the video signal. The two softkeys are selector switches.
Positive video polarity is to be selected e.g. for standard L signals, negative
video polarity for signals according to the standards B/G/I/M (color standard
PAL or NTSC). Default setting is VIDEO POL NEGATIVE.
IEC/IEEE bus command
:TRIGger<1|2>[:SEQuence]:VIDeo:SSIGnal:POLarity POS|NEG
The soft keys 625 LINE SYSTEM and 525 LINE SYSTEM permit to select
the line system to be used. The two softkeys are selector switches.
Default setting is 625 LINE SYSTEM.
IEC/IEEE bus command
:TRIGger<1|2>[:SEQuence]:VIDeo:FORMat:LPFRame 625|525
The soft key PICT/SOUND OFFSET is used to set the offset between the
demodulated picture carrier and the test channel of the ESIB.
The setting range is 0 to 6.5 MHz. The frequency resolution for the offset is
25 kHz.
No offset is set in the default setting.
With the offset 0 MHz, the ESIB measures at the frequency of the picture
carrier. This setting permits to measure the time characteristic of the video
signal.
If an appropriate offset between picture and sound carrier is set, the picture
can be seen on a connected TV monitor and the sound simultaneously
monitored via the AF demodulator. To this end, the ESIB needs to be tuned
to the frequency of the sound carrier.
The picture/sound carrier offsets for the most commonly used TV standards
are as follows:
Standard B/G and L
Standard M and N
Standard I
IEC/IEEE bus command
The soft key TV DEMOD OFF switches off the TV demodulator.
IEC/IEEE bus command
4.282
5.5 MHz
4.5 MHz
6 MHz
<:SENSe1|2>:TV:POFFset 0 ... 6.5 MHz
<:SENSe1|2>:TV[:STATe]
FS
ON | OFF
E-15
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