MH88600 Ver la hoja de datos (PDF) - Mitel Networks

Número de pieza

componentes Descripción

Fabricante

MH88600

0.3-15V; 4W; global SLIC. For PABX, intercoms, key systems, central office equipment

Mitel Networks 

Preliminary Information

MH88600

Table 1: Impedance Matching with Jumpers

Zin Code Zin 2-Wire Input Impedance Administration ZN1 Link to: ZN8 Link to:

1

600

600Ω

---

ZN7

---

2

UK

370Ω + 620Ω // 310nF

United Kingdom

ZN6

ZN13

3

D

220Ω + 820Ω // 310nF

Germany, Austria

ZN5

ZN12

4

NA

350Ω + 1000Ω // 310nF

Canada, USA

ZN4

ZN11

5

F

210Ω +880Ω // 310nF

France

ZN3

ZN10

6

N

120Ω + 820Ω // 310nF

Norway

ZN2

ZN9

7

A

220Ω + 820Ω // 310nF

Australia

Use D Code

Use D Code

Note 1: The above impedances are as suggested by references: BS6305 (UK), REG3 (Australia), Proposed NET4, FCC Part 68 and

recommendations by the various Administrations. Confirm your impedance requirements before proceeding.

Note 2: All links to ZN1 should be as short as possible.

Table 2: Impedance Matching with External Components

Zin Code

Zin 2-Wire Input Impedance

Administration

Rs

Rp

Cp

1

---

600Ω + 2.16µF

---

6kΩ

1MΩ

216nF

2

ATT

900Ω + 2.16µF

AT&T

9kΩ

1MΩ

216nF

3

NTT

600Ω + 1.0µF

NTT

6kΩ

1MΩ

100nF

4

NZ

370Ω + (620Ω // 220nF)

New Zealand

3.7kΩ 6.2kΩ

22nF

Note 1: The above impedances are as suggested by reference CCITT Q.522. Confirm your impedance requirements before proceeding.

Note 2: For Rs, Rp & C calculations, G is set to 10, R is set to 5656.8Ω, refer to figure 8 for additional information.

Table 3: Transmit and Receive Gain Programming

Transmit Gain

(dB)

RTX Resistor

Value (Ω)

Notes

+5.62

+4.0

+3.69

+2.1

270k

No Resistor

216k

180k

Results in 0dB overall gain when used with Mitel A-law codec (ie MT8965)

Results in 0dB overall gain when used with Mitel µ-law codec (ie MT8964)

0.0

141k

-3.0

100k

Transmit Gain

(dB)

RTX Resistor

Value (Ω)

Notes

+6.6

+0.0

33.1k

70.7k

-3.0

-3.69

4.0

-6.5

100k

108k

No Resistor

150k

Results in 0dB overall gain when used with Mitel A-law codec (ie. MT8964)

Results in 0dB overall gain when used with Mitel µ-law codec (ie MT8965)

Note 1: See Figures 4 and 5 for additional details.

Note 2: Overall gain refers to the receive path of PCM to 2-Wire, and to transmit path of 2-Wire to PCM.

2-91

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