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參數(shù)資料
| 型號(hào)： | IBM42P21SNYAA10 |
| 廠商： | IBM Microeletronics |
| 英文描述： | 2x Fibre Channel Small Form Factor Hot-Pluggable Transceiver(2x光纖通道小外形封裝可帶電插收發(fā)器) |
| 中文描述： | 2倍光纖通道纖巧熱插拔收發(fā)器（2倍光纖通道小外形封裝可帶電插收發(fā)器） |
| 文件頁數(shù)： | 15/34頁 |
| 文件大?。?/td> | 180K |
| 代理商： | IBM42P21SNYAA10 |
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IBM42P21SNYAA10
IBM42P21LNYAA10
2x / 1x Fibre Channel Small Form Factor Hot-Pluggable Transceiver
08/15/00
Page 15 of 31
Optical Specifications (Long Wavelength)
Receiver Specifications
Symbol
Parameters
Min
Typical
Max
Units
Notes
λ
Operating Wavelength
1270
1355
nm
RL
Return Loss of Receiver
12
dB
OMA
Optical Modulation Amplitude (2.125Gb/s
and 1.0625Gb/s)
15
1000
μ
W
1,2
P
off
Rx_LOS Assert Level
-30.0
-20.0
dBm (avg)
3
P
on
Rx_LOS De-Assert (negate) Level
-20.5
dBm (avg)
3
Rx_LOS Hysteresis
0.5
2.5
5.0
dB (optical)
3
1. The minimum and maximum values of the average received power in dBm allow the input power range to maintain a BER < 10
-12
when the data is sampled in the center of the receiver eye. These values take into account power penalties caused by the use of a
laser transmitter with a worst-case combination of spectral width, extinction ratio, and pulse shape characteristics.
2. 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)). The extinction ratio, defined as 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 at 2.125Gb/s is
equivalent to an average power of -15 dBm at an extinction ratio of 9 dB. At 1.0625Gb/s, the specified OMA is equivalent to an
average power of -17 dBm at an ER of 9 dB.
3. The RX_LOS has hysteresis to minimize “chatter” on the output line. In principle, hysteresis alone does not guarantee chatter-free
operation. These SFFs, 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.
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