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2763-26TR Subcarrier T1 Data System

  
The 2763-26TR is a complete two way subcarrier data system with T1 interface via an RJ-45 connector consisting of a subcarrier modulator, subcarrier demodulator, T1 to RS422 interface and switching power supply in a 2RU chassis. The 2763-26TR is a subcarrier above video data transmission system with factory set frequencies from 5.4 MHz to 8.4 MHz. Data for the 2763-16T subcarrier modulator and 2763-16R subcarrier demodulator 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.

 


 2763-26TR Subcarrier T1 Data System
 

Equipment Specifications*
 

General
Modulation
Frequency Range
Data Rate
Spacing
Interface
Scrambling
Forward Error Correction		 QPSK
5.4 to 8.4 MHz, crystal controlled, factory set
1.544 Mbps
1.1 MHz
T1 on RJ-45 connector
CCITT V.35
None
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		 Hi-Z bridging, unbalanced
>= 2k ohms
25 to 250 mVpp
Controls (Transmitter)
Level
 		 Potentiometer adjusts output carrier level
Indicators
Data
Alarm
T1 Data
Power		 Green LED
Red LED
Red LED (on loss of T1 data)
Green LED
Other
SC Connectors
Data Connectors
Mechanical
Power		 BNC, female
RJ-45
19 inch standard chassis, 3.5"H X 14"D
90-260 VAC, 47-63 Hz, 40 W

*+10 to +40 degrees C; 2000m max elevation; 80% max humidity; Specifications subject to change without notice