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2763 Subcarrier BPSK/QPSK Data System

  
The 2763 is a BPSK/QPSK subcarrier above video data transmission system with factory set frequencies from 5.4 MHz to 8.4 MHz. Data is synchronous and the interface format can be set to RS-422 or RS-423 (RS-232 compatible) by changing on board jumpers. Connection to video is via a high impedance resistor which does not load the video signal even when power is lost.
 

 2763-XXT Transmitter and 2763-XXR Receiver

Equipment Specifications*
 

General
Modulation
Frequency Range
Data Rates
Spacing		 BPSK or QPSK
5.4 to 8.4 MHz, crystal controlled, factory set
64, 96, 128, 256, 512 kB/s (BPSK or QPSK); 1.544, 2.048 Mb/s (QPSK only)
QPSK, 0.7 X Data Rate; BPSK, 1.4 X Data Rate
Modulator (Transmitter)  
Subcarrier Output
Level		 1k ohm or 75 ohms, unbalanced
25 to 150 mVpp, 1k ohm; 50 to 300 mVpp, 75 ohms
Demodulator (Receiver)  
Input
Impedance
Level
Interface
Scrambling
Forward Error Correction		 Hi-Z bridging, unbalanced
>= 2k ohms
25 to 250 mVpp
RS423 (RS232 compatible) or RS422
CCITT V.35
None
Controls (Transmitter)
Level
 		 Potentiometer adjusts output carrier level
Indicators
Data
Alarm		 Green LED
Red LED
Other
SC Connectors
Data Connectors
Mechanical
Power		 BNC, female
Barrier strip
19 inch standard chassis, 1.75"H X 14"D
115 VAC, 60Hz, 20W max, wall mount power supply

Optional; 2044-01 T1/RS422 Interface Card - Converts T1 data to RS422 clock and data and simultaneously receives RS422 clock and data and converts it to T1 data. B8ZS/AMI encoding and decoding. A DIP switch selects line lengths from 0 to 655 feet.

*+10 to +40 degrees C; Specifications subject to change without notice