Tektronix 7B53A, Инструкция по эксплуатации

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7B53A/7B53AN OPTION 5
SPECIFICATION
General Information
The TV Sync Separator permits TEKTRONIX real-time
oscilloscopes to display composite video signals. The TV
Sync Separator clips video information from the incoming
video signal; then, it amplifies and separates the field or
vertical trigger pulses from the line or horizontal trigger
pulses. Line rate or field rate trigger pulses are provided
depending on the position of the front panel switch.
This manual insert describes the special features of the
7B53A/7B53AN OPTION 5 plug-in unit which has been
modified to enable triggering on composite video signals
through the use of a Sync Separator circuit. The EXT ÷ 10
and LINE positions of the Main Triggering Amplifier
SOURCE switch have been replaced by the TV FIELD and
TV LINE switch positions, allowing the sweeps to be
triggered by the output of the Sync Separator circuit at a
Field or Line Rate. The delayed sweep circuit has TV
LINE/EXT or INT/EXT SOURCE triggering capability,
depending on whether the connection is made to P903 or
P904.
Compatability
The TV Sync Separator can be used with 7400, 7500,
7600, 7700, and 7900-Series real time TEKTRONIX
oscilloscopes.
External Graticules
External graticules for the main frame are available. Use
the following information when ordering:
Main Frame External Graticule
7403N-7603 CCIR Composite, Part No.
378-0684-04
NTSC Composite, Part No.
378-0684-05
Main Frame External Graticule
7500,7700,7900 CCIR Composite, Part No.
378-0625-05
NTSC Composite, Part No.
378-0625-06
ELECTRICAL CHARACTERISTICS
Connector Input or Output Signal
COMPOSITE
VIDEO
IN (2
Major Divisions)
Needs 2 major divisions peak-to-
peak sync negative composite video
signal.
FIELD RATE A group of one to six pulses, whose
minimum amplitude is 2 V nega­
tive, shall re-occur at a field rate.
The width of each individual group
of pulses shall not exceed 3H.
LINE RATE
The line trigger pulses available
shall have a clean leading edge and a
minimum
amplitude of 180 mV
negative.
SYSTEM CHARACTERISTICS
Compatibility Compatible with V and H sync
signals of standard 405, 625, 819
Line/50 Hz, and 525 Line/60 Hz
broadcast systems; 405 to 1201
Line closed circuit systems.
Trigger Sensitivity
2 major divisions or more will
provide stable V or H triggering.
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