參數(shù)資料
型號(hào)： IBM42F21LNNAA10
廠商： IBM Microeletronics
英文描述： 1x Fibre Channel Small Form Factor PTH Transceiver(1x吉位光纖通道小外形PTH收發(fā)器)
中文描述： 1X的光纖通道纖巧甲狀旁腺收發(fā)器（1倍吉位光纖通道小外形甲狀旁腺收發(fā)器）
文件頁(yè)數(shù)： 11/24頁(yè)
文件大?。?/td> 210K
代理商： IBM42F21LNNAA10
IBM42G21SNNAA10
IBM42G21LNNAA10
IBM42F21SNNAA10
IBM42F21LNNAA10
2x / 1x Fibre Channel Small Form Factor PTH Transceiver
08/15/00
Page 11 of 23
Transmitter Specifications
Symbol
Parameter
Min
Typical
Max.
Unit
Notes
λ
C
Spectral Center Wavelength
830
860
nm
λ
Spectral Width
0.85
nm (rms)
PT
Launched Optical Power
-10
-4.0
dBm (avg)
1
T
rise
/T
fall
Optical Rise/Fall Time
150
ps
2
OMA
Optical Modulation Amplitude (2.125Gb/s)
196
μ
W (pk-pk)
3
OMA
Optical Modulation Amplitude (1.0625Gb/s)
156
μ
W (pk-pk)
3
RIN
12
Relative Intensity Noise
-117
dB/Hz
4
Eye Opening
0.56
UI
5
DJ
Deterministic Jitter
0.26
UI
6
CPR
Coupled Power Ratio
9
dB
7
1. Launched optical power is measured at the end of a two meter section of a 50/125m fiber (N.A.=0.20). The maximum and mini-
mum of the allowed range of average transmitter power coupled into the fiber are worst case values to account for manufacturing
variances, drift due to temperature variations, and aging effects. The minimum launched optical power specified assumes an infi-
nite extinction ratio at the minimum specified OMA.
2. Optical transition time is the time interval required for the rising or falling edge of an optical pulse to transition between the 20% and
80% amplitudes relative to the logical 1 and 0 levels. This is measured through a 4th order Bessel -Thompson filter with 0.75 * Data
Rate 3-dB bandwidth and corrected to the full bandwidth value.
3. Optical Modulation Amplitude (OMA) is defined as the difference in optical power between a logic level one and a logic level zero.
The Optical Modulation Amplitude is defined in terms of average optical power (P
AVG
in
μ
W) and extinction ratio (ER) as given by
OMA=2P
AVG
((ER-1)/(ER+1)). In this expression, the extinction ratio, the ratio of the average optical power (in
μ
W) in a logic level
one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case
reflections, must be the absolute (unitless linear) ratio and not expressed in dB. The specified Optical Modulation Amplitude is
equivalent to an average power of -9 dBm at an extinction ratio of 9 dB.
4. RIN
12
is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12dB return loss.
See ANSI Fibre Channel Specification Annex A.
5. Eye opening is the portion of the bit time where the bit error rate (BER)
≤
10
-12
. 1.0625Gb/s values meet the criteria listed in Ref
[1].
6. Deterministic Jitter is measured as the peak-to-peak timing variation of the 50% optical signal crossings when transmitting repeti-
tive K28.5 characters. It is defined in FC-PH, version 4.3, clause 3.1.87 as:
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 depen-
dent jitter (DDJ) caused by the interaction of the limited bandwidth of the transmission system components and the sym-
bol sequence. 1.0625Gb/s values meet the criteria listed in Ref [1].
7. Coupled Power Ratio is the ratio of the average power coupled into a multimode fiber to the average power coupled into a single
mode fiber. This measurement is defined in EIA/TIA-526-14A.
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