參數(shù)資料
型號： LUCL9311GP0DT
英文描述： Line Interface and Line Access Circuit Full-Feature SLIC with High Longitudinal Balance, Ringing Relay,and GR-909 Test Access
中文描述： 線路接口和線路接入電路全功能用戶接口高縱向平衡，振鈴繼電器，和GR - 909測試訪問
文件頁數(shù)： 39/50頁
文件大小： 852K
代理商： LUCL9311GP0DT
Data Sheet
July 2001
Ringing Relay, and GR-909 Test Access
L9311 Full-Feature SLIC with High Longitudinal Balance,
Agere Systems Inc.
39
Special Functions
(continued)
Line Test
(continued)
Table 20 shows design equations to measure the various line voltages and currents.
Table 20. TESTLEV Output Options
Test Mode
Relationship
Comments
Test Off
V
REF
High Impedance
V
TESTLEV
=
V
REF
+ V
OFFSET
—
Unity follower on V
REF
.
This is the voltage mea-
surement calibration state, use the V
REF
state
in the secondary control state table.
Difference amp.
Tip-to-Ring Voltage
(V
TIP
– V
RING
) = 75 (1 – 0.0075 |V
TL
|)
x V
TL
V
TL
= V
TESTLEV
– (V
REF
+ V
OFFSET
)
V
TIP
= –
75 (1
–
0.0075 |V
TL
|) x V
TL
+
V
REF
+ V
OFFSET
V
TL
= V
TESTLEV
– (
V
REF
+ V
OFFSET
)
V
RING
=
–
75 (1
–
0.0075 |V
TL
|) x V
TL
+ V
REF
+ V
OFFSET
V
TL
= V
TESTLEV
– (
V
REF
+ V
OFFSET
)
V
TESTLEV
=
V
ZEROCUR
Tip-to-Ground Voltage
Inverting amp.
Ring-to-Ground Voltage
Inverting amp.
VTX, Zero Current (tip
open, ring open)
Unity follower on VTX close to V
REF
+ V
AXOFF-
SET
+ V
OFFSET
.
This is the current measurement
calibration state. In the secondary control state
table, use tip amp or ring amp for single-ended
current measurement calibration. Use tip and
ring amp for differential current measurement
calibration. Do not use the disconnect mode
for current calibration.
Differential current.
VTX, dc Current Tip/Ring
(tip closed, ring closed)
VTX, dc Current Ring
Ground (tip closed, ring
open)
VTX, dc Current Ring
Ground (tip open, ring
closed)
VITR, Zero Current (tip
open, ring open)
V
TESTLEV
=
20 V/A x I
TIP-to-RING
+ V
ZE-
ROCUR
V
TESTLEV
=
10 V/A x I
TIP-to-RING
+ V
ZE-
ROCUR
Single-ended voltage.
V
TESTLEV
= –1
0 V/A x I
TIP-to-RING
+
V
ZEROCUR
Single-ended voltage.
V
TESTLEV
=
V
ZAC
Unbuffered output of VITR close to V
REF
+ V
AX-
OFFSET
+ V
ACOFFSET
. This is the current mea-
surement calibration state. In the secondary
control state table, use tip amp or ring amp for
single-ended current measurement calibra-
tion, use tip and ring amp for differential cur-
rent measurement calibration. Do not use the
disconnect mode for current calibration.
—
VITR, ac Current (tip
closed, ring closed)
V
TESTLEV
=
300 V/A x I
TIP-to-RING
+
V
ZAC
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