13

Table 10. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics

Parameter

Symbol

Min.

Units

Notes

Transceiver Internal Temperature

±3.0

°C

Temperature is measured internal to the transceiver.

Accuracy

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

Transceiver Internal Supply

±0.1

V

Supply voltage is measured internal to the transceiver

Voltage Accuracy

and can, with less accuracy, be correlated to

voltage at the SFP Vcc pin. Valid over 3.3 V ± 10%.

Transmitter Laser DC Bias Current

±10

%

Accuracy

Transmitted Average Optical

±3.0

dB

Coupled into 9/125 μm single-mode fiber. Valid from

Output Power Accuracy

100 μW to 500 μW, average.

Received Optical Input Power

±3.0

dB

Coupled from 9/125 μm single-mode fiber. Valid from

Accuracy

15 μW to 500 μW, average.

Figure 4. Transceiver timing diagrams (module installed 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 ASSERTED, TX SIGNAL NOT RECOVERED

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-loss-on & t-loss-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