JGB-10SNAA1 JDS UNIPHASE, JGB-10SNAA1 Datasheet - Page 18

• Manufacturer Part Number: JGB-10SNAA1
• Manufacturer: JDS UNIPHASE

Specifications of JGB-10SNAA1

• Lead Free Status / RoHS Status: Not Compliant

JGB-10SNAA1
JGB-10SYAA1
Fibre Channel GBIC
Notes for Long Wavelength Optical Characteristics
Page 18 of 29
1. Launched optical power is measured at the end of a two meter section of a 50/125 m fiber for the shortwave GBICs and a 9/125
2. RIN
3. Eye opening is the portion of the bit time where the bit error rate (BER) is
4. Deterministic Jitter is measured as the peak-to-peak timing variation of the 50% optical signal crossings when transmitting repetitive
5. Optical rise and fall time specifications are based on the unfiltered waveforms. For the purpose of standardizing the measurement
6. The Optical Modulation Amplitude (OMA) is defined as the difference in optical power between a logic level one and a logic level
7. The Rx_LOS has hysteresis to minimize “chatter” on the output line. In principle, hysteresis alone does not guarantee chatter-free
fiber are worst case values to account for manufacturing variances, drift due to temperature variations, and aging effects.
See ANSI Fibre Channel Specification Annex A.5.
teristics are specified in the form of a mask of the transmitter eye diagram. These characteristics include pulse overshoot, pulse
undershoot, and ringing, all of which should be controlled to prevent excessive degradation of the receiver sensitivity. When
assessing the transmit signal, it is important to consider not only the eye opening, but also the overshoot and undershoot limitations.
K28.5 characters. It is defined in FC-PH, version 4.3, clause 3.1.87 as:
method, measured waveforms shall conform to the mask as defined in PC-PI figure 16: Transmitter eye diagram mask. If a filter is
needed to conform to the mask, the filter response effect should be removed from the measured rise and fall times using the equa-
tion: T
ter should have an impulse response equivalent to a fourth order Bessel-Thomson Filter.
zero.
operation. These GBICs, however, present an Rx_LOS line without chatter, where chatter is defined as a transient response having
a voltage level of greater than 0.5 volts (in the case of going from the negate level to the assert level) and of any duration that can
be sensed by the host logic.
m fiber for the longwave GBICs). The maximum and minimum of the allowed range of average transmitter power coupled into the
Timing distortions caused by normal circuit effects in the transmission system. Deterministic jitter is often subdivided into
duty cycle distortion (DCD) caused by propagation differences between the two transitions of a signal and data dependent
jitter (DDJ) caused by the interaction of the limited bandwidth of the transmission system components and the symbol
sequence.
12
RISE/FALL
is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12 dB return loss.
= [(T
RISE/FALL_MEASURED
JGB-10LNAA1
JGB-10LYAA1
)
2
-(T
RISE/FALL_FILTER
)
2
]
1/2
The optical signal may have different rise and fall times. Any fil-
10
-12
. The general laser transmitter pulse shape charac-
GBIC.1063
03/06/02