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INTRODUCTION:
The Model 2000 Television Modulator is designed for use in broadcast and other applications where high
quality stable signals are required. This unit, in the NTSC format, exceeds all Part 74 and 76 requirements
for broadcast exciters. This product is also available to meet most International standards.
STANDARD FEATURES:
1.
75 Ohm 1 volt p-p video input
2.
Baseband audio input usable balanced or unbalanced
3.
Utilizes SAW filter for high quality vestigial sideband output
4.
Low spurious and harmonic signals
5.
Many options available (consult factory)
6.
Meets applicable Group Delay characteristics
7.
Switching power supply for efficiency and wide voltage range — 85-265 volts 50-60Hz. (Dc power
options also)
8.
Conservative design for long life and high reliability
AVAILABLE OPTIONS:
1.
Audio subcarrier input for BTSC encoders that provide a subcarrier output. This option is also
provided with switch selectable baseband audio (internal subcarrier oscillator/modulator) input for
conventional use.
2.
Composite input (Audio subcarrier included with Video) for applications such as signals from
microwave equipment. This option is also provided with switch selectable baseband audio (internal
subcarrier oscillator/modulator) input for conventional use.
3.
Wideband audio input for BTSC stereo encoders that provide a baseband output.
4.
Separate audio and video carriers for use with separate aural and visual transmitter upconverter/
amplifiers (one non-SAW filtered visual IF loop standard).
5.
Composite output containing both aural and visual carriers where one transmitter upconverter/
amplifier is utilized. Triple IF loops for testing or use with scrambling systems are standard (aural,
visual and SAW filtered composite).
6.
Choice of output levels +45 or +60dBmV.
7.
Channelized output with user's choice of carrier frequency. (7 to 850MHz at +60dBmV level) (three
IF loops standard)
8.
Dc coupled video for use with many baseband scrambling systems. (This option does not provide
clamping, white clip or modulation depth indication for the video.)
Revised June 1999
MODEL 2000
TELEVISION MODULATOR
Page 3
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