Preliminary
PBL 386 65/2
Ref
fig
Parameter
Conditions
Min
Typ
Max
Unit
Four-wire to two-wire, g4-2
6
relative to 0 dBm, 1.0 kHz. EL = 0 V
0.3 kHz < f < 3.4 kHz
f = 8 kHz, 12 kHz,
-0.15
-1.0
-1.0
0.15
0
0
dB
dB
dB
-0.2
-0.3
16 kHz
Four-wire to four-wire, g4-4
6
relative to 0 dBm, 1.0 kHz. EL = 0 V
0.3 kHz < f < 3.4 kHz
-0.15
0.15
dB
Insertion loss
Two-wire to four-wire, G2-4
6
6
0 dBm, 1.0 kHz, Note 5
VTX
G2-4 = 20 • Log
,ERX = 0
VTR
-6.22
-0.2
-6.02
-5.82
0.2
dB
dB
Four-wire to two-wire, G4-2
0 dBm, 1.0 kHz, Notes 5, 6
VTR
G4-2 = 20 • Log
,EL = 0
ERX
Gain tracking
Two-wire to four-wire RLDC≤ 2kΩ
6
6
Ref. -10 dBm, 1.0 kHz, Note 7
-40 dBm to +3 dBm
-55 dBm to -40 dBm
Ref. -10 dBm, 1.0 kHz, Note 7
-40 dBm to +3 dBm
-0.1
-0.2
0.1
0.2
dB
dB
Four-wire to two-wire RLDC≤ 2kΩ
-0.1
-0.2
0.1
0.2
dB
dB
-55 dBm to -40 dBm
Noise
Idle channel noise at two-wire
(TIPX-RINGX)
C-message weighting
Psophometrical weighting
Note 8
7
-83
12
-78
dBrnC
dBmp
Harmonic distortion
Two-wire to four-wire
Four-wire to two-wire
6
0 dBm, 1.0 kHz test signal
0.3 kHz < f < 3.4 kHz
-50
-50
dB
dB
Battery feed characteristics
500
RLC
ILProg
=
Constant loop current, ILconst
15
18 < ILProg < 65 mA
0.92 ILProg ILProg
1.08 ILProg mA
Tip open state TIPX current, ILeak
Tip open state RINGX current, ILRTO
7
7
S = closed; R = 7 kΩ
-100
µA
RLRTO = 0Ω, VBat = -48V
RLRTO = 2.5 kΩ, VBat = -48V
ILRTO < 23 mA
Active state, Tip lead open (S open), -4
Ring lead to ground through 150 Ω
Active state, tip lead to -48 V
through 7 kΩ (S closed), Ring
lead to ground through 150 Ω
RL = 0Ω
IL
mA
mA
17
Tip open state RINGX voltage, VRTO
Tip voltage (ground start)
7
7
VBat+ 5.8
-2.5
V
V
-
-
Tip voltage (ground start)
7
-6
-3.1
0
V
Open circuit state loop current, ILOC
-100
100
µA
Figure 6.
C
Frequency response, insertion loss,
gain tracking.
TIPX
VTX
RL
EL
VTR
ILDC
RT
PBL 386 65/2
VTX
1
ERX
<< RL, RL = 600 Ω
ωC
RINGX
RSN
RRX
RT = 120 kΩ, RRX = 120 kΩ
5