參數(shù)資料
型號(hào): PEF24902H
英文描述: ?Quad ISDN Echocancellation Circuit Analog Front End - 2B1Q/4B3T Code?
中文描述: ?四整體數(shù)位服務(wù)網(wǎng)路Echocancellation電路模擬前端- 2B1Q/4B3T代碼?
文件頁數(shù): 33/73頁
文件大?。?/td> 1618K
代理商: PEF24902H
PEB 2466
PEF 2466
Operational Description
Hardware Reference Manual
24
2001-02-20
4.2.16
Out-of-Band Discrimination in Receive Direction
With any 0 dBm0 sine-wave frequency in the range from 300 Hz to 3.99 kHz applied to
the digital input (PCM time slot), the level of any resulting out-of-band signal at the
analog output will stay at least X dB (see
Table 19
) below the output level of a 0 dBm0
1kHz sine-wave reference signal at the digital input.
Table 19
Out-of-Band Signals at the Analog Outputs (V
OUTx
)
Figure 14
Analog Output: Out-of-Band Signals
Output Frequency
Min. Output Signal Rejection
X
Unit
Test Conditions
3.4 kHz to 4.6 kHz
dB
0 dBm0 sine-wave
input signal on digital
input (PCM time slot)
4.6 kHz to 10.55 kHz
dB
4 kHz
4.6 kHz
>10.55 kHz
15
28
57
dB
dB
dB
14
π
4000
1200
f
--------------------
sin
1
35
22f
4600
5950
--------------------
+
0
0
kHz
f
100
0.06 0.1
3.4
4
4.6
6
10
10.55
18
dB
50
R
D
10
20
15
30
40
35
60
8
16
28
57
2466_215
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