2

Figure 1. AFCT-57V6NSZ Simplified Block Diagram

Table 1. General AFCT-57V6NSZ Specifications

Parameter

1000BASE-ZX*

unit

Nominal Bit Rate

1.25

Gbps

Link Loss Budget

17

dB

Minimum Required Link Loss

0

dB

Bit Error Ratio(BER)

-

Fiber Core Diameter

9

mm

Operating Range(max)

40

km

† Optical specifications are modified to realize 40 km transmission in singlemode fiber.

DFB-LD

DC Bias

Circuit

Optical

Output

RD +

RD -

TD +

TD-

100 ohm

TZ

AMP

APC

PD

MOD_DEF[1]

TX_FAULT

VccR

VccT

VeT

VeeR

SDA

SCL

SCL

SDA

Module Definition

(A0h)

Digital Diagnostic

Monitoring Interface

(A2h)

Monitor

Modulation

Bias

Circuit

Control Circuit

Circuit

MOD_DEF[2]

TX_DISABLE

Transmitter

RX_LOS

Limiting

Amp

Level

Detector

PIN-PD

Optical

Input

Receiver

Vcc Slow Start