Descriptions
A
professional grade microprocessor-controlled agile audio/video mini-mod-
ulator. This modulator accepts any audio-video baseband television signal and provides a
45dBmV minimum output on CATV channels 2 to 135 (54-860 MHz) while accommodating
HRC and IRC offset frequencies. Channel selection is easily accomplished via channel
up/down buttons located on the front panel while built-in RF muting circuitry prevents inter-
ference during online channel reassignment.
features >-90dB out-of-band
carrier-to-noise ratio, allowing virtually unlimited numbers of
Mod
’s to be combined in a
system without the need for external bandpass filtering. Up to 12 or 16 units can be installed
“mix-and-match” in
c
hassis with
mini-modulators or mini-demodulators. Its unique design
enables it to be installed in other manufacturers’ mini-mod chassis. The unit’s tracking filter
technology and double-heterodyne conversion ensure accurate and spurious-free output.
U
ses SAW filtering in conjunction with FCC group delay correction circuitry to
provide superior adjacent channel selectivity. The unit’s PLL circuitry in conjunction with the
non-volatile memory contained in the microprocessor ensures easy and reliable channel
selection and restoration. The
modulator is shipped with all internal adjustments
preset.
135-Channel Range 54-860 MHz
(CATV 2-135)
>45dBmV min adjustable output
for optimum carrier-to-noise
performance
Compatible with most manufac-
turers mini-modulator chassis
State-of-the-art digital phase-
locked-loop (PLL) design guaran-
tees precise frequency locking for
solid drift-free operation
Microprocessor control enables
quick digital push-button channel
selection for ease of installation,
configuration, and improved sys-
tem uptime
SAW (surface acoustic wave)
filtered for superior adjacent
channel performance enables
drop-in channel expansion
BTSC stereo compatible pre-
emphasis disable switch provides
pass-through for stereo signals
In-band carrier-to-noise ratio
>65dB ensures superior picture
quality
Automatic selection of aeronauti-
cal offsets (12.5kHz, 25kHz) for
trouble-free configuration
Front panel access to controls
enables easy setup
IRC and HRC offset available for
frequency settings in systems
using offset channels
PCMA860-HQ
Universal-Chassis Agile A/V Mini-Modulator
