參數(shù)資料
型號(hào)： AM79C202
廠(chǎng)商： Electronic Theatre Controls, Inc.
英文描述： Advanced Subscriber Line Interface Circuit
中文描述： 高級(jí)用戶(hù)線(xiàn)接口電路
文件頁(yè)數(shù)： 27/48頁(yè)
文件大?。?/td> 501K
代理商： AM79C202
ASLIC/ASLAC Products
27
Group Delay Distortion
For either transmission path, the group delay distortion is within the limits shown in Figure 2. The minimum value of
the group delay is taken as the reference. The signal level should be
–
10 dBm0.
Single Frequency Distortion
The output signal level at any single frequency in the range of 300 Hz to 3400 Hz, other than that due to an applied
0 dBm0 sine wave signal with frequency f
0
in the same frequency range, is less than
–
46 dBm0. With f
0
swept between
0 to 300 Hz and 3400 Hz to 12 kHz, any generated output signals other than f
0
are less than
–
28 dBm0. This
specification is valid for either transmission path.
Intermodulation Distortion
Two sine wave signals of different frequencies f1 and f2 (not harmonically related) in the range 300 Hz to 3400 Hz
and of equal levels in the range
–
4 dBm0 to
–
21 dBm0 will not produce 2
(
f1
–
f2) products having a level greater
than
–
42 dB relative to the level of the two input signals.
A sine wave signal in the frequency band 300 Hz to 3400 Hz with input level
–
9 dBm0 and a 50 Hz signal with input
level
–
23 dBm0 will not produce intermodulation products exceeding a level of
–
56 dBm0. These specifications are
valid for either transmission path.
0
500 600
1000
2600 2800
90
150
420
Delay (μs)
ASLAC Device Specification
(Either Path)
Frequency (Hz)
Figure 2. Group Delay Distortion
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