參數(shù)資料
型號: LXT332
廠商: Digital Data Communications GmbH
英文描述: 3941
中文描述: 雙T1/E1線路接口單元與水晶無衰減
文件頁數(shù): 26/32頁
文件大小: 777K
代理商: LXT332
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AMI Output Pulse
Amplitudes
DSX-1
é
êí
ê
9
measured at the DSX
E1 (120
)
E1 (75
)
êí
êê
9
measured at line side
ìê
ê
ì
9
measured at line side
Transmit amplitude variation with supply
3
¤
ì
è
Recommended output load at TTIP and RRING
¤
è
¤
Driver output impedance
3
¤
ê
ìí
@ 772 kHz
Jitter added by the
transmitter
1
10 Hz - 8 kHz
3
¤
íííè
ííì
8,
T1 Jitter based
8 kHz - 40 kHz
3
¤
ííìè
ííè
8,
10 Hz - 40 kHz
3
¤
íí
ííè
8,
Broad Band
¤
ííê
ííè
8,
Jitter added by the
transmitter
1
20 Hz – 100 kHz
¤
¤
ííè
8,
E1 Jitter Band
Output power levels
3
DS1 2 kHz BW
@772 kHz
ì
¤
ì
G%P
@ 1544 kHz
e
¤
¤
G%
referenced to power in
2 kHz band at 772 kHz
Positive to negative pulse imbalance
¤
¤
íè
G%
N
Receive input impedance
¤
éí
¤
Sensitivity below DSX
(0 dB = 2.4 V)
ìê
¤
¤
G%
(max 6 dB cable attenuation)
èíí
¤
¤
P9
Loss of Signal threshold
¤
íê
¤
9
Data decision threshold
DSX-1
í
í
SHDN
E1
éê
èí
è
SHDN
Input jitter tolerance
10 Hz
¤
ìíí
¤
8,
750 Hz
ìé
¤
¤
8,
10 kHz – 100 kHz
íé
¤
¤
8,
Allowable consecutive zeros before LOS
ìí
ìè
ìí
¤
Jitter attenuation curve cor-
ner frequency
2,3
T1
¤
¤
+]
E1
¤
ìí
¤
+]
Attenuation input jitter tolerance before
FIFO overflow
3
¤
¤
8,
Jitter attenuation @ 10 kHz
éè
¤
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