參數(shù)資料
型號: DS3153N
英文描述: Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
中文描述: 單/雙/三/四DS3/E3/STS-1柳斯
文件頁數(shù): 27/60頁
文件大?。?/td> 788K
代理商: DS3153N
DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
27 of 60
Table 7-D. STS-1 Waveform Test Parameters and Limits
PARAMETER
SPECIFICATION
Rate
Line Code
Transmission Medium
Test Measurement Point
Test Termination
Pulse Amplitude
51.840Mbps ( 20ppm)
B3ZS
Coaxial cable (AT&T 734A or equivalent)
At the end of 0 to 450ft of coaxial cable
75 ( 1%) resistive
0.800V nominal (not covered in specs)
An isolated pulse (preceded by two zeros and followed by one
or more zeros) falls within the curved listed in
Table 7-C
.
Between -1.8dBm and +5.7dBm
At least 20dB less than the power measured at 25.92MHz.
Pulse Shape
Unframed All-Ones Power Level at 25.92MHz
Unframed All-Ones Power Level at 51.84MHz
Table 7-E. E3 Waveform Test Parameters and Limits
PARAMETER
Rate
Line Code
Transmission Medium
Test Measurement Point
Test Termination
Pulse Amplitude
SPECIFICATION
34.368Mbps ( 20ppm)
HDB3
Coaxial cable (AT&T 734A or equivalent)
At the transmitter
75 ( 1%) resistive
1.0V (nominal)
An isolated pulse (preceded by two zeros and followed by one
or more zeros) falls within the template shown in
Figure 7-1
.
Pulse Shape
Ratio of the Amplitudes of Positive and Negative
Pulses at the Center of the Pulse Interval
Ratio of the Widths of Positive and Negative
Pulses at the Nominal Half Amplitude
0.95 to 1.05
0.95 to 1.05
Figure 7-1. E3 Waveform Template
0
-0.1
-0.2
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
TIME (ns)
G.703
E3
TEMPLATE
O
29.1
24.5
12.1
8.65
17
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DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
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