PBL 386 50/2

3

Figure 2. Overhead voltage, V

wire port

1

<< R

ωC

R

Electrical Characteristics

0

°C ≤ T

= 27 mA. R

11 k

Ω unless otherwise specified. Current definition: current is positive if flowing into a pin.

Ref

Parameter

fig

Conditions

Min

Typ

Max

Unit

Two-wire port

Overhead voltage, V

2

Active state, R

2.7

V

Peak

0.2 kHz < f < 3.4 kHz

On-Hook, I

1% THD, Note 1

1.1

V

Peak

Over load level, metering

f

≤16kHz, Z

5.0

V

Peak

Input impedance, Z

TR

Note 2

Z

Longitudinal impedance, Z

0 < f < 100 Hz

20

35

Ω/wire

Longitudinal current limit, I

active state

18

mA

Longitudinal to metallic balance, B

LM

Normal polarity:

(IEEE standard 455-1985, Z

0.2 kHz < f < 1.0 kHz

55

dB

Longitudinal to metallic balance, B

LME

3

1.0 kHz < f < 3.4 kHz

55

dB

Reverse polarity:

0.2 kHz < f < 3.4 kHz

55

dB

Longitudinal to four-wire balance, B

LFE

3

Normal polarity:

0.2 kHz < f < 1.0 kHz

61

75

dB

1.0 kHz < f < 3.4 kHz

61

70

dB

Reverse polarity:

0.2 kHz < f < 3.4 kHz

61

68

dB

Metallic to longitudinal balance, B

MLE

4

0.2 kHz < f < 3.4 kHz

40

50

dB

V

TR

B

; E

V

Lo

Figure 3. Longitudinal to metallic (B

and Longitudinal to four-wire (B

balance

1

<< 150

Ω, R

ωC

R

B

E

Lo

V

TR

B

E

Lo

V

TX

PBL 386 50/2

TIPX

RINGX

RSN

VTX

C

PBL 386 50/2

TIPX

RINGX

RSN

VTX

C