XR-T7296 Datasheet, PDF (9/16 Pages) Exar Corporation – DS3/STS-1, E3 Integrated Line Transmitter

XR-T7296
-01100000........22086420^{ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ}
-01
-0.5
0
0.5
1.0
1.5
Time Slots-Normalized to Peak Location
Figure 3. DSX-3 Isolated Pulse Template for
ANSI T1.404 Standards
-01100000........22086420^{ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ}
-1.0
-0.5
0
0.5
1.0
1.5
Time Slots-Normalized to Peak Location
Figure 4. DSX-3 Isolated Pulse Template for
Bellcore TR-NWT-000499
STS-1 SIGNAL REQUIREMENTS
For STS-1 operation, the cross-connect is referred at the
STSX-1. Table 5 lists the signal requirements at the
STSX-1. Instead of the DS3 isolated pulse template, an
eye diagram mask is specified for STS-1 operation
(TA-TSY-000253). (See Figure 5).
Parameter Specification
Line Rate 51.84Mbps
Line Code Bipolar with three-0 substitution (B3ZS)
Test Load 75 Ω  5%
Power Levels
A wide-band power level measurement
at the STSX-1 interface using a low-
pass filter with a 3dB cutoff frequency
of at least 200MHz is within -2.7dBm
and 4.7dBm.
Table 5. STSX-1 Interconnection Specification
1.2
1
0.3
0.6
0.4
0.2
0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
-0.2
Figure 5. STSX-1 Isolated Pulse Template for Bellcore TA-TSY-000253
Rev. 2.01
9