參數(shù)資料
型號(hào): PEF24902
英文描述: ISDN Line Interface
中文描述: ISDN線路接口
文件頁(yè)數(shù): 27/73頁(yè)
文件大?。?/td> 1618K
代理商: PEF24902
PEB 2466
PEF 2466
Operational Description
Hardware Reference Manual
18
2001-02-20
4.2.7
Frequency Response
Table 9
Attenuation with Frequency in Transmit and Receive Direction
4.2.8
Group Delay
4.2.8.1
Table 10
shows the limit values for the Absolute Group Delay. The maximum delays are
valid when the SICOFI
4-μC is operating with H(TH) = H(IM) = 0, and H(FRR) = H(FRX)
= 1, and include the delay through the A/D and D/A converters. The typical delays are
the average of all different time slot delays during one PCM frame.
Group Delay, Absolute Values
Table 10
Group Delay, Absolute Values
Input Frequency
Receive Loss
min.
0
0
-0.125
-0.125
-0.125
-0.125
0
Transmit Loss
min.
> 2
0
-0.125
-0.125
-0.125
-0.125
0
Unit
Test Conditions
max.
0.125
0.3
0.65
max.
1
0.125
0.3
0.65
0 Hz to 100 Hz
100 Hz to 200 Hz
200 Hz to 300 Hz
300 Hz to 3.0 kHz
3.0 kHz to 3.2 kHz
3.2 kHz to 3.4 kHz
> 3.4 kHz
dB
dB
dB
dB
dB
dB
dB
0 dBm0 input signal
level. 1014 Hz
reference frequency
Parameter
Symbol
Limit Values
typ.
375
375
Unit
Test Conditions
min.
300
300
max.
450
450
Transmit Delay
Receive Delay
D
XA
D
RA
μs
μs
0 dBm0 input signal
level, f
Test
at T
G
min.
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