Cisco QSFP-40GE-LR4 データシート
© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
Page 4 of 7
Table 1 provides cabling specifications for the Cisco QSFP+ modules.
Table 1.
QSFP+ Port Cabling Specifications
Cisco QSFP+
Wavelength (nm)
Cable Type
Core Size
(Microns)
(Microns)
Modal Bandwidth
(MHz
(MHz
*
km)
***
Cable Distance
*
Cisco QSFP-40G-SR4
850
MMF
50.0
50.0
50.0
500 (OM2)
2000 (OM3)
4700 (OM4)
30m
100m
150m
**
Cisco QSFP-40G-CSR4
850
MMF
62.5
50.0
50.0
50.0
200 (OM1)
500 (OM2)
2000 (OM3)
4700 (OM4)
33m
82m
300m
400m
Cisco QSFP-40GE-LR4
1310
SMF
G.652
-
10km
Cisco QSFP-4SFP10G-CU1M
-
Direct-attach copper -
-
1m
Cisco QSFP-4SFP10G-CU3M
-
Direct-attach copper -
-
3m
Cisco QSFP-4SFP10G-CU5M
-
Direct-attach copper -
-
5m
Cisco QSFP-4X10G-AC7M
-
Direct-attach copper -
-
7m
Cisco QSFP-4X10G-AC10M
-
Direct-attach copper -
-
10m
Cisco QSFP-H40G-CU1M
-
Direct-attach copper -
-
1m
Cisco QSFP-H40G-CU3M
-
Direct-attach copper -
-
3m
Cisco QSFP-H40G-CU5M
-
Direct-attach copper -
-
5m
Cisco QSFP-H10G-ACU7M
-
Direct-attach copper -
-
7m
Cisco QSFP-H10G-ACU10M
-
Direct-attach copper -
-
10m
*
Minimum cabling distance is 0.5m for -SR4 and -CSR4 modules, and 2m for -LR4 according to the IEEE 802.3 standard.
**
Considered an engineered link with maximum 1dB allocated to connectors and splice loss.
***
Specified at transmission wavelength.
Note:
All Cisco QSFP+ modules and cables except QSFP-40G-CSR4 exceed IEEE specifications guaranteeing
a link bit-error rate (BER) better than 1E-15. QSFP-40G-CSR4 meets IEEE specifications guaranteeing a link BER
better than 1E-12.
Table 2 shows the main optical characteristics for the Cisco QSFP+ modules.
Table 2.
Optical Transmit and Receive Specifications
Transmit Power (dBm)
*
Receive Power (dBm)
*
Product
Type
Maximum
Minimum
Maximum
Minimum
Transmit and
Receive
Wavelength (nm)
Receive
Wavelength (nm)
Cisco QSFP-40G-
SR4
SR4
40GBASE-SR4,
4 lanes, 850 nm
MMF
4 lanes, 850 nm
MMF
-1, per lane
**
-7.6, per lane
2.4, per lane
-9.5, per lane
840 to 860
Cisco QSFP-40G-
CSR4
CSR4
40GBASE-CSR4,
4 lanes, 850 nm
MMF
4 lanes, 850 nm
MMF
-1.2, per lane
-7.3, per lane
-1, per lane
-9.9, per lane
840 to 860
Cisco QSFP-
40GE-LR4
40GE-LR4
40GBASE-LR4,
1310 nm, SMF
1310 nm, SMF
2.3, per lane
-7, per lane
2.3, per lane
-13.7, per lane
Four lanes
1271,
1291,
1311,
1331
1271,
1291,
1311,
1331
*
Transmitter and receiver power is in average, unless specified.
**
Version -01 of QSFP-40G-SR4 allows for a maximum transmit power of +1dBm per lane.