參數(shù)資料
型號： LUCL9310AP-DT
元件分類： 圓形連接器
英文描述： Side Entry Connector Hood; Enclosure Material:Aluminum Alloy; For Use With:C146 Rectangular Circular Connectors; Thread Size:PG 21; Connecting Termination:Screw; Gender:Male; No. of Contacts:24; Operating Voltage:400V; Series:C-146 RoHS Compliant: Yes
中文描述： 線路接口和線路接入電路全功能用戶接口，振鈴繼電器，測試接入設(shè)備
文件頁數(shù)： 43/60頁
文件大小： 1053K
代理商： LUCL9310AP-DT
Data Sheet
July 2001
Full-Feature SLIC, Ringing Relay, and Test Access Device
L9310 Line Interface and Line Access Circuit
Agere Systems Inc.
43
Special Functions
(continued)
Line Test
(continued)
All measurements that appear at the TESTLEV output
are referenced to the internal V
REF
voltage of the
device. For that reason, there is a test mode in which
V
REF
itself will appear at the TESTLEV output.
When making a voltage measurement, first measure
V
REF
and subtract V
REF
from V
TESTLEV
.
When making a current measurement, open the line
break switches and measure V
TESTLEV
. This value is
then subtracted from the V
TESTLEV
that is seen during
the actual measurement. Note that due to internal bias-
ing of the line break switches, the value seen at
V
TESTLEV
with the line break switches open will be less
than the value seen with the line break switches closed
under on-hook (open-loop) conditions.
TESTSIG should be externally connected to the
device’s V
REF
if it is not used during a test condition.
This may be done by a high-impedance pull-up resis-
tor. Additionally, TESTSIG should be ac coupled to the
test signal generator.
Table 21 shows design equations to measure the vari-
ous line voltages and currents.
Table 21. TESTLEV Output Options
Test Mode
Test Off
V
REF
Relationship
Comments
High Impedance
V
TESTLEV
=
V
REF
+ V
OFFSET
—
Unity follower on V
REF
.
This is the voltage measurement
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 Volt-
age
Inverting amp.
Ring-to-Ground Volt-
age
Inverting amp.
VTX, Zero Current
(tip open, ring
open)
Unity follower on VTX close to V
REF
+ V
AXOFFSET
+ V
OFF-
SET
.
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 measure-
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
ZEROCUR
V
TESTLEV
= 10 V/A x I
TIP-to-RING
+
V
ZEROCUR
Single-ended voltage.
V
TESTLEV
= –10 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
AXOFFSET
+
V
ACOFFSET
. This is the current measurement 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 current mea-
surement 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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