參數(shù)資料
型號: XRT86VL3x
廠商: Exar Corporation
元件分類: 通信及網絡
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 142/153頁
文件大小: 1316K
代理商: XRT86VL3X
XRT86VL3X
135
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
REV. 1.2.2
F
IGURE
118. ITU G.703 P
ULSE
T
EMPLATE
T
ABLE
22: T
RANSMIT
P
ULSE
M
ASK
S
PECIFICATION
Test Load Impedance
75
Ω
Resistive (Coax)
120
Ω
Resistive (twisted Pair)
Nominal Peak Voltage of a Mark
2.37V
3.0V
Peak voltage of a Space (no Mark)
0 + 0.237V
0 + 0.3V
Nominal Pulse width
244ns
244ns
Ratio of Positive and Negative Pulses Imbalance
0.95 to 1.05
0.95 to 1.05
1
1
1
1
1
1
269 ns
(244 + 25)
194 ns
(244 – 50)
244 ns
219 ns
(244 – 25)
488 ns
(244 + 244)
0%
50%
2
V = 100%
Nominal pulse
Note
– V corresponds to the nominal peak value.
2
2
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