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參數(shù)資料
| 型號： | AG2410 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH PERFORMANCE QUAD TRUNK |
| 中文描述： | 高性能四干線 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 280K |
| 代理商： | AG2410 |
V1.4 February 2005
Data Sheet
Ag2410
HIGH PERFORMANCE QUAD TRUNK
Example
2-wire
Impedance
Network
Balance
Impedance
Zbal1
Zbal2
Zbal3
C3
Notes
1
600
600
51K
36K
0
47pF
Far East, Middle East
2
600
AT&T
compromise
33K
33K
15K
2700pF
North America
3
Other
Other
51K
36K
0
47pF
Program impedance using
“intelligent” codec (e.g. SICOFI
or QSLAC)
Table 2: Line and Network Balance Impedance Examples
3.2 The 2 Wire Impedance
3.3
Network Balance Impedance
The setting of the network balance can be done by
programming of the Codec, using the .CIR file, or it can
be done by hardware components.
If the hardware technique is used a network must be
connected between Z
b
and V
in
. Common examples are
shown in Table 2.
The input impedance, Z
IN
, of each circuit is set
internally to 600R. To provide other impedances, use
a codec where the internal filter characteristics can be
programmed to provide the correct matching. In order
to generate the filter coefficients a model of the Ag2410
must be used. This file, in .CIR format is available on
request from Silver Telecom or one of our
representatives.
Full details on how the Codec is programmed must be
obtained from the Codec manufacturer.
3.4
On-Hook Reception
The need to provide the facility for data exchange
For 600
application:
R1 = 270K
Zbal1 = 51K
Zbal2 = 36K
Zbal3 = 0
C1, C2, C4 = 100nF
C3 = 47pF
C5 = 10uF, 6.3V
C6 – 100uF, 6.3V
PTC = TR600-150
Thyristor = TVB270SA
Zbal3
C6
+
REF
+
C5
C4
Thyristor
PTC
GND
Zbal2
C3
GND
Codec
Silver
T E L E C O M
RING
V
GND
GND
Z
b
CC
V
DMa
TIP
LSC
LC
RS
OUT
IN
V
Ag2410
(1 channel)
DMb
V
Protection Network
C2
C1
Zbal1
R1
+5V
Figure 3: A Single Channel Showing Impedance and Protection Components
Silver Telecom 2005
Page 5
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