Gigabit Fiber Optical Characteristics
302401-D Rev 00 B-3

Receive Characteristics

Table B-3 lists the receive characteristics for the 1000BASE-SX models:

Worst-Case Power Budget and Penalties

Table B-4 lists the worst-case power budget and penalties for the 1000BASE-SX

models:

Table B-3. 1000BASE-SX Receive Characteristics
Description 62.5 Micron
Multimode Fiber 50 Micron
Multimode Fiber Units
Signaling Speed (range) 1.25 ± 100 ppm 1.25 ± 100 ppm GBd
Wavelength (range) 770 to 860 770 to 860 nm
Average receive power (maximum) 0 0 dBm
Receive sensitivity – 17 – 17 dBm
Return loss (mini mu m) 12 12 dB
Stressed receive sensitivity 1, 2
1 Measured with conformance test signal at TP3 for BER = 10–12 at the eye cent er.
2 Measured with a transmit signal having a 9 dB e x tinction ratio. If y ou use another extinction ratio, correct the stressed
receive sensitivity according to the extinction ratio penalty.
– 12.5 – 13.5 dBm
Receive electrical 3 dB upper cutoff frequency
(maximum) 1500 1500 MHz
Vertical eye-closure penalty 3
3 Vertical eye-closure penalty is a test condition for measur ing stre ssed receive sensitivity. It is not a required
characteristic of the receiver.
2.60 2.20 dB

Note: The link power penalties (Table B-4) are used for link power budget

calculations only. They are not requirements and are not meant to be tested.

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