PBL 3766
Parameter
Ref.
Fig.
Conditions
Min
Typ
Max
Unit
Two-wire return loss, r
TIPX idle voltage, V
Ti
RINGX idle voltage, V
Ri
Four-wire transmit port (VTX)
Overload level, V
TXO
Output offset voltage,
∆V
TX
PBL 3766
PBL 3766/6
Output impedance, z
TX
Four-wire receive port (RSN)
RSN dc voltage, V
RSN
RSN impedance, z
RSN
RSN current (I
RSN
) to metallic loop current
(I
L
) gain,
α
RSN
Frequency response
Two-wire to four-wire, g
2-4
Four-wire to two-wire, g
4-2
Four-wire to four-wire, g
4-4
Insertion loss
Two-wire to four-wire, G
2-4
PBL 3766
PBL 3766/6
Four-wire to two-wire, G
4-2
PBL 3766
PBL 3766/6
Four-wire to four-wire, G
4-4
TIPX
27/21
|Z
TRX
- Z
L
|
Z
TRX
≈
Z
L
= nom. 600Ω, Note 3
0.2 kHz
≤
f
≤
0.5 kHz
0.5 kHz
≤
f
≤
1.0 kHz
1.0 kHz
≤
f
≤
3.4 kHz
active, I
L
= 0
stand-by, I
L
= 0
active, I
L
= 0
stand-by, I
L
= 0
5
Load impedance > 20 kohms,
1% THD, Note 4
r = 20 · log
|Z
TRX
+ Z
L
|
25
27
23
30
32
25
-5
0
-43
-48
3.1
dB
dB
dB
V
V
V
V
V
Pk
-40
-55
0.2 kHz < f < 3.4 kHz
I
RSN
= 0
0.3 kHz
≤
f
≤
3.4 kHz
0.3 kHz
≤
f
≤
3.4 kHz
<5.0
0
<5
1000
+40
+55
20
mV
mV
ohm
V
ohm
ratio
20
6
6
6
0.3 kHz < f < 3.4 kHz relative
to 0 dBu, 1.0 kHz. E
RX
= 0 V
0.3 kHz < f < 3.4 kHz relative
to 0 dBu, 1.0 kHz. E
L
= 0 V
0.3 kHz < f < 3.4 kHz relative
to 0 dBu, 1.0 kHz. E
L
= 0 V
0 dBm, 1.0 kHz, Note 5
-0.1
-0.1
-0.1
0
0
0
+0.1
+0.1
+0.1
dB
dB
dB
6
-0.20
-0.25
6
0 dBm, 1.0 kHz, Notes 5, 6
-0.20
-0.25
-0.3
0
0
0
0
0
+0.20
+0.25
+0.20
+0.25
+0.3
dB
dB
dB
dB
dB
6
0 dBm, 1.0 kHz, Notes 5, 6
VTX
19/14
C
V
L
O
R
LT
E
TR
R
LR
Figure 4. Metallic to longitudinal (B
MLE
)
and four-wire to longitudinal (B
FLE
)
balance.
R
T
E
RX
PBL 3766
RINGX
28/22
RSN
16/12
1
ωC
< 150 ohms, R
LR
= R
LT
= 300 ohms,
<
R
RX
R
T
= 600 kohms, R
RX
= 300 kohms
C
R
L
I
Ldc
E
L
TIPX
27/21
VTX
19/14
Figure 5. Overload level, V
TXO
, four-wire
transmit port.
R
T
V
TXO
PBL 3766
RINGX
28/22
RSN
16/12
1
ωC
< R
L
, R
L
= 600 ohms,
<
R
RX
R
T
= 600 kohms, R
RX
= 300 kohms
4-4
ERICSSON [ ERICSSON ]
