Pico Macom PR3200 - Manual (Page 4)

PICO MACOM INC. 12500 Foothill Blvd. • Lakeview Terrace, CA 91342 • (818) 897-0028 (800) 421-6511
D E S C R I P T I O N S
T
he PR-3200 is an economic descrambler
compatible commercial satellite receiver
designed for SMATV systems. The unit has
been tested by General Instruments to meet all
VideoCipher® II performance requirements. The
PR-3200 provides three video outputs configured
to interface with all known scrambling systems.
The standard 950 to 1750 MHz tuning range of
the PR-3200 allows direct compatibility for
international CCIR standards.
Technical Operation
RF Input The PR-3200 receives either C-
Band or Ku-Band signals from a 950-1450 MHz
LNB or a 950-1750 MHz LNB. Typical installa-
tions using 60 dB gain LNB's have -25 dBm
available a t the output of the LNB. The PR-3200
will operate at input levels ranging from -30 dBm
to as low as -60 dBm. A front panel signal strength
meter is provided. At full IF gain; a meter reading
of 2 corresponds to a -60 dBm input, a reading of
8 corresponds to an input of -30 dBm.
70 MHz IF The selected RF input signal is
converted to a 70 MHz Intermediate Frequency
(I.F.). The PR-3200 comes with a short I.F. jumper
cable that must be installed between the "I.F.
OUT" and the "I.F. IN" connectors on the back of
the receiver. Terrestrial interference traps may be
inserted in the loop should microwave interference
be encountered.
LNB Power Most commercial headend
systems consist of several receivers and
modulators. The PICO MACOM Satellite Signal
Processor SSP-10 provides the dual LNB power
and the amplified power divider for such
applications. The PR-18DC external power
supply is also available for single receiver
applications. The PR-18DC power cable plugs
directly into the back of the PR-3200 to provide
+18 VDC power for the LNB.
H/V Switching The PR-3200 provides
automatic H/V switching.
Channel Selection is phase locked loop
controlled with a digital display of channel
numbers.The receiver comes factory tuned for
standard 24 channel C-Band operation.
Ku Band Operation The PR-3200 may also
be used for Ku band signals by use of the video
invert rear panel switch.
Audio Subcarrier selection is made from the
front panel in one of two ways. A preset PLL
tuned 6.8MHz demodulator or variable tuned
5.0MHz to 8.0MHz demodulator can be selected.
Outputs Three video outputs are provided on
the rear of the PR-3200. Video and audio output
levels are factory set for C-band operation. Level
controls are accessible from bottom of unit. One
video output is filtered and clamped for
unscrambled programming. The composite video
output is de-emphasized, un-clamped and un-
filtered for VideoCipher® operation. The MAC
descrambler compatible flat video output is
unclamped, un-filtered and has no de-emphasis.
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