參數(shù)資料
型號(hào)： T7290A
廠商： Lineage Power
英文描述： DS1/T1/CEPT/E1 Line Interface(DS1/T1/CEPT/E1 線接口)
中文描述： DS1/T1/CEPT/E1線路接口（DS1/T1/CEPT/E1線接口）
文件頁(yè)數(shù)： 10/24頁(yè)
文件大?。?/td> 420K
代理商： T7290A
Data Sheet
April 1998
T7290A DS1/T1/CEPT/E1 Line Interface
10
Lucent Technologies Inc.
Transmitter
(continued)
Output Pulse Shape
(continued)
Note: V corresponds to the nominal peak value.
Figure 6. ITU-T G.703 Pulse Template
Output Pulse Generation
The transmitter accepts a clock with positive and negative data (dual-rail NRZ format) and converts the signal to a
balanced bipolar data signal (AMI format). Positive 1s are produced by a positive pulse on device pin T2, and neg-
ative 1s are produced by a positive pulse on device pin R2. Binary 0s are converted to null pulses. All pulse shapes
are controlled on-chip according to equalizer control inputs, as defined in Table 5. Transmitter specifications are
shown in Table 4.
Table 5. Equalizer/Rate Control
*
Distance to DSX in feet for 22-Ga. PIC (ABAM) cable (DS1 only). Use maximum loss figures for other cable types.
dB at 772 kHz.
According to FCC Part 68, Subpart D, Option A for 0 dB line build-out.
Service
T1
Clock
Rate
1.544 MHz
Transmitter
Equalization
*
—
0 ft.—131 ft.
131 ft.—262 ft.
262 ft.—393 ft.
393 ft.—524 ft.
524 ft.—655 ft.
75
120
Maximum
Cable Loss
22
0.6
1.2
1.8
2.4
3.0
—
—
EC1
0
0
0
0
1
1
1
1
EC2
0
0
1
1
0
0
1
1
EC3
0
1
0
1
0
1
0
1
DS1
1.544 MHz
CEPT
2.048 MHz
10%
488 ns
(244 + 244)
219 ns
(244 – 25)
10%
0%
NOMINAL PULSE
269 ns
(244 + 25)
20%
10%
10%
V = 100%
20%
50%
10%
10%
244 ns
194 ns
(244 – 50)
20%
5-3145(C)r.7
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T-7290A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A-EL 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A--EL 制造商:Alcatel-Lucent 功能描述:DATACOM, PCM TRANSCEIVER, PDSO28
T7290A-EL 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A--EL-DT 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
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