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參數(shù)資料
| 型號： | L9215A |
| 英文描述： | CAP CER 2200PF 3.15KVDC R3 RAD |
| 中文描述： | 短回路正弦波振鈴用戶接口 |
| 文件頁數(shù)： | 12/50頁 |
| 文件大?。?/td> | 1115K |
| 代理商： | L9215A |
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Data Sheet
September 2001
Short-Loop Sine Wave Ringing SLIC
L9215A/G
12
Agere Systems Inc.
State Definitions
Forward Active
I
Pin PT is positive with respect to PR.
I
V
BAT2
is applied to tip/ring drive amplifiers.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
PPM input is off.
I
Overhead is set to nominal 6.0 V for undistorted
transmission of 3.14 dBm into 900
and may be
increased via OVH.
Reverse Active
I
Pin PR is positive with respect to PT.
I
V
BAT2
is applied to tip/ring drive amplifiers.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
PPM input is off.
I
Overhead is set to nominal 6.0 V for undistorted
transmission of 3.14 dBm into 900
and may be
increased via OVH.
Forward Active with PPM
I
Pin PT is positive with respect to PR.
I
V
BAT2
is applied to tip/ring drive amplifiers.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
PPM input is on.
I
Overhead is set to nominal 6.0 V for undistorted
transmission of 3.14 dBm into 900
and may be
increased via OVH to accommodate higher-voltage
meter pulse signals.
Reverse Active with PPM
I
Pin PR is positive with respect to PT.
I
V
BAT2
is applied to tip/ring drive amplifiers.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
PPM input is on.
I
Overhead is set to nominal 6.0 V for undistorted
transmission of 3.14 dBm into 900
and may be
increased via OVH to accommodate higher-voltage
meter pulse signals.
Scan
I
Except for loop closure, all circuits (including ring trip
and common-mode detector) are powered down.
I
On-hook transmission is disabled.
I
Pin PT is positive with respect to PR and V
BAT1
is
applied to tip/ring.
I
The tip-to-ring on-hook differential voltage will be
typ-
ically
between –44 V and –51 V with a –70 V primary
battery.
On-Hook Transmission
—
Forward Battery
I
Pin PT is positive with respect to PR.
I
V
BAT1
is applied to tip/ring drive amplifiers.
I
Supervision circuits, loop closure, and common-
mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
On-hook transmission is allowed.
I
The tip-to-ring on-hook differential voltage will be
between –41 V and –49 V with a –70 V primary bat-
tery.
I
PPM is off.
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