14

Table 11. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics

The following characteristics are defined over the Recommended Operating Conditions unless otherwise noted.

Parameter

Symbol

Min.

Units

Notes

Transceiver Internal Temperature

±3.0

°C

Temperature is measured internal to the transceiver.

Valid from = -10°C to 85°C case temperature.

Transceiver Internal Supply

±0.1

V

Supply voltage is measured internal to the transceiver

Voltage

and can, with less accuracy, be correlated to

voltage at the VccT contact. Valid over 3.3 V ± 10%.

Transmitter Laser DC Bias Current

±10

%

Transmitted Average Optical

±3.0

dB

Average Power coupled into 9/125 μm single-mode

Output Power

fiber. Valid from151 μW to 1120 μW.

Received Average Optical Input

±3.0

dB

Average Power coupled from 9/125 μm single-mode

Power

fiber. Valid from 25 μW to 1120 μW.

Figure 5. Transceiver timing diagrams (module installed and power applied except where noted)

TX_FAULT

t_init

TX_DISABLE

TRANSMITTED SIGNAL

t_init

TX_FAULT

TX_DISABLE

TRANSMITTED SIGNAL

t-init: TX DISABLE NEGATED

t-init: TX DISABLE ASSERTED

TX_FAULT

t_init

TX_DISABLE

TRANSMITTED SIGNAL

t_off

TX_FAULT

TX_DISABLE

TRANSMITTED SIGNAL

t-init: TX DISABLE NEGATED, MODULE HOT PLUGGED

t-off & t-on: TX DISABLE ASSERTED THEN NEGATED

INSERTION

t_on

TX_FAULT

OCCURANCE OF FAULT

t_fault

TX_DISABLE

TRANSMITTED SIGNAL

TX_FAULT

OCCURANCE OF FAULT

TX_DISABLE

TRANSMITTED SIGNAL

t-fault: TX FAULT OCCURED

t-reset: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL RECOVERED

t_reset

t_init*

* SFP SHALL CLEAR TX_FAULT IN

< t_init IF THE FAILURE IS TRANSIENT

TX_FAULT

OCCURANCE OF FAULT

t_fault

TX_DISABLE

TRANSMITTED SIGNAL

OPTICAL SIGNAL

LOS

t-fault: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL NOT RECOVERED

t-los-on & t-los-off

t_loss_on

t_init*

t_reset

* SFP SHALL CLEAR TX_FAULT IN

< t_init IF THE FAILURE IS TRANSIENT

t_loss_off

OCCURANCE

OF LOSS