參數(shù)資料
型號: DS2186
英文描述: Transmit Line Interface
中文描述: 發(fā)送線路接口
文件頁數(shù): 7/11頁
文件大?。?/td> 129K
代理商: DS2186
DS2186
022798 7/11
CHARACTERISTICS OF T1 AND CEPT INTERFACES
Table 3
CHARACTERISTIC
T1
CEPT
LINE RATE
1.544 MHz
2.048 MHz
LINE CODE
AMI
1
or B8ZS
AMI or HDB3
TEST LOAD IMPEDANCE
100 ohm Resistive
120 ohm Resistive (wire pair)
75 ohm Resistive (coax)
NOMINAL PEAK
VOLTAGE
2.4V to 3.6 V
2
3.0V (wire pair)
2.37V (coax)
PULSE SHAPE
–Scaled to fit templates shown–
NOMINAL PULSE WIDTH
244 ns
PULSE IMBALANCE
< 0.5 dB difference between
total power of positive and
negative pulses.
1) Negative peak = positive peak
±
5%
2) Positive width at nominal half ampli-
tude = negative width at nominal half
amplitude
±
5%.
NOTES:
1. With a ones density of at least 12.5% and no more than 15 consecutive zeros.
2. Measured at the cross–connect (DSX–1) point; CSU applications may be 7.5 to 15 dB below these levels.
相關(guān)PDF資料
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DS2187 Receive Line Interface
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參數(shù)描述
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