Pico Macom PR3200 manual S C R I P T I O N S, Technical Operation

D E S C R I P T I O N S

The PR-3200is 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-3200provides three video outputs configured to interface with all known scrambling systems. The standard 950 to 1750 MHz tuning range of the PR-3200allows direct compatibility for international CCIR standards.

Technical Operation

RF Input The PR-3200receives 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-3200will 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-3200comes 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-10provides the dual LNB power and the amplified power divider for such applications. The PR-18DCexternal power supply is also available for single receiver applications. The PR-18DCpower cable plugs directly into the back of the PR-3200to 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-3200may 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.

3

PICO MACOM INC. 12500 Foothill Blvd. • Lakeview Terrace, CA 91342 • (818) 897-0028 (800) 421-6511