363-206-295
Technical Specifications
Issue 1
December 1997
10-15
Notes:
.
Table 10-8. 23G/23G-U and 23H/23H-U OLIU Link Budgets (Note 1)
Parameter
23G/23G-U (Note 2)
23H/23H-U (Note 3)
Minimum Wavelength (
λ
Tmin
)
1298 nm
1530 nm
Maximum Wavelength (
λ
Tmax
)
1325 nm
1570 nm
Spectral Width* (
δλ
rms
)
2.0 nm
<1.0 nm
Maximum Transmitter Power† (P
Tmax
)
+2.0 dBm
+2.0dBm
Minimum Transmitter Power (P
Tmin
)
−
2.5/
−
3.0 dBm‡
−
2.8 dBm
Maximum Received Power (P
Rmax
)
−
8.0 dBm
−
17.0 (23H)
−
8.0 (23H-U) dBm
Minimum Received Power (P
Rmin
)
−
30.5/
−
27.5 dBm‡
−
34.0 dBm
Minimum System Gain (S-R)§
28.0/24.5 dBm‡
31.2 dBm
Optical Path Penalty (P
O
)¶
2.0 dB
1.0 dB
Connector Loss**
1.5 dB
1.5 dB
Unallocated Margin††
1.5 dB
1.5 dB
Minimum Loss Budget‡‡
10.0 dB
19.0 (23H) 10.0 (23H-U) dB
Maximum Loss Budget§§
23.0/19.5 dB‡
27.2 dB‡
Maximum Span Length¶¶
51/43 km
100 km
1.
All terminology is consistent with TR-253, Iss. 2. All values are worst-case end of life.
2.
All specifications for the 23G/23G-U meet or exceed long reach (LR) values described in
TR-253, Iss. 2.
3.
This loss budget applies to 1550 nm optical signals transmitted and received by the 23H/
23H-U.
*
RMS spectral width for the 23G/23G-U. Maximum
−
20 dB down spectral width for the
23H/23H-U.
†
Transmit and receive powers are referenced to points S and R as shown in Figure 10-1.
‡
When two numbers are given, the number before the slash is the specification for
operating under controlled environmental conditions. The number following the slash is
the specification for uncontrolled environmental conditions. If only one number is given, it
applies to both controlled and uncontrolled environmental conditions (23G/23G-U only).
The 23H/23H-U operates under controlled environmental conditions only.
§
The minimum system gain for the DDM-2000 already takes into account aging,
temperature, and manufacturing tolerances as these figures are built into the minimum
transmitter power. The DDM-2000 system gain can, thus, not be directly compared with
the DDM-1000 system gain because the DDM-1000 system gain does not include all of
these effects. A similar penalty, called eye margin, is subtracted from the DDM-1000 loss
budget after the value of system gain is determined.
Содержание DDM-2000 OC-12
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Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
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Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
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