參數(shù)資料
型號: DS3150TN
廠商: DALLAS SEMICONDUCTOR
元件分類: Digital Transmission Interface
英文描述: DATACOM, PCM TRANSCEIVER, PDIP48
封裝: TQFP-48
文件頁數(shù): 20/22頁
文件大?。?/td> 228K
代理商: DS3150TN
DS3150
7 of 22
E3 TRANSMIT WAVEFORM TEMPLATE Figure 1D
E3 TRANSMIT WAVEFORM TEST PARAMETERS AND LIMITS Table 1G
Parameter
Specification
Rate
34.368 Mbit/s (
± 20 ppm)
Line code
HDB3
Transmission medium
coax cable (AT&T 734A or equivalent)
Test measurement point
At the transmitter
Test termination
75
(± 1%) resistive
Pulse amplitude
1.0V (nominal)
Pulse shape
An isolated pulse (preceded by two zeros and
followed by one or more zeros) falls within the
template shown in Figure 1D
Ratio of the amplitudes of positive and negative
pulses at the center of the pulse interval
0.95 to 1.05
Ratio of the widths of positive and negative
pulses at the nominal half amplitude
0.95 to 1.05
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
Output
Level (V)
29.1ns
24.5ns
12.1ns
8.65ns
17ns
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