参数资料
型号: XRT73L02MIV-F
厂商: Exar Corporation
文件页数: 22/46页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 2CH 100TQFP
标准包装: 90
类型: 线路接口装置(LIU)
驱动器/接收器数: 2/2
规程: DS3,E3,STS-1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-TQFP(14x14)
包装: 托盘
xr
XRT73L02M
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.0.0
27
The Equalizer also contain an additional 20 dB gain stage to provide the line monitoring capability of the resis-
tively attenuated signals which may have 20dB flat loss. This capability can be turned on by setting
the
RxMON_n bits in the control register or by setting the RxMON pin “High”.
5.0.1.1
INTERFERENCE TOLERANCE:
For E3 mode, ITU-T G.703 Recommendation specifies that the receiver be able to recover error-free clock and
data in the presence of a sinusoidal interfering tone signal. For DS3 and STS-1 modes, the same recommen-
dation is being used. Figure 17 shows the configuration to test the interference margin for DS3/STS1. Figure
18 shows the set up for E3.
FIGURE 17. INTERFERENCE MARGIN TEST SET UP FOR DS3/STS-1
FIGURE 18. INTERFERENCE MARGIN TEST SET UP FOR E3.
TABLE 9: INTERFERENCE MARGIN TEST RESULTS
MODE
CABLE LENGTH (ATTENUATION)INTERFERENCE TOLERANCE
E3
0 dB
- 17 dB
12 dB
-15 dB
Test Equipment
Pattern Generator
2 23 -1 PRBS
Sine Wave
Generator
N
S
0 to 900 feet
Coaxial Cable
DUT
(XRT73L02M)
Attenuator
DS3 = 22.368 MHz
STS-1 = 25.92 MHz
Test Equipment
Noise Generator
2 23 -1 PRBS
Signal Source
N
S
0 to 12 dB Cable Loss
DUT
(XRT73L02M)
Attenuator 1
Attenuator 2
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