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Table Of Contents

Technical Specifications

2.1 Optical Specifications

2.1.1 Maximum Input Power

2.1.2 Channel Loading

2.2 Electrical Specifications

2.3 Mechanical Specifications

2.4 External Features

2.5 Front Panel


Technical Specifications


This chapter discusses the technical specifications for the Cisco ONS 15216 EDFA2.

2.1 Optical Specifications

ONS 15216 EDFA2 optical specifications are listed and described in Table 2-1.

Table 2-1 ONS 15216 EDFA2 Optical Specifications 

Requirement
Specification

Input signal wavelength

1530 nm to 1563 nm

Input power (channel total)

-27 dBm to 4 dBm (total all channels)

See the "Maximum Input Power" section and "Channel Loading" section for more information.

Note In the event of a fiber cut or loss of connection, and there is no input power, the ONS 15216 EDFA2 has -3.5 dBm of output power. For additional safety information, see the "Safety Requirements" section on page 3-3.

Mode of operation

Unidirectional (two common fibers: one transmit, one receive)

Maximum output power

17 ± 0.6 dBm

Signal gain per channel

13 dB to 22 dB

Channel gain deviation from setpoint

± 1.25 dB

Gain flattened

< 2 dB (peak to valley)

Maximum noise figure

< 7 dB at -5 dBm input power

Polarization mode dispersion (PMD)

< 0.6 ps

Input/output optical return loss

> 27 dB

Backward ASE power

-30 dBm maximum

Polarization sensitivity

< 0.5 dB

Automatic gain control (AGC)

The ONS 15216 EDFA2 contains an active gain block with an automatic gain control loop to minimize the effects of output power variations per wavelength upon adding or deleting wavelengths on the same DWDM ring.


2.1.1 Maximum Input Power

The ONS 15216 EDFA2 operates at a gain setting between 13 and 22 dB. Each gain setting has a maximum input power. The maximum input power is defined as the output power, 17 dBm, minus the gain setting. For example at a gain setting of 22 dB, the maximum input power is -5 dBm. Prolonged operation beyond the maximum input power can shorten the life of the ONS 15216 EDFA2.

Optical attenuators are required to bring total input power to less than the maximum input power when operating in constant gain mode.

2.1.2 Channel Loading

You can ensure a smooth upgrade path from a single channel to the maximum numbers of channels with a minimum disruption of service if the per-channel power of the single channel is properly set from the start. The per-channel power should be set so that at full channel loading, the total input power is less than the maximum power indicated in Table 2-2. For example, if the maximum number of channels at full loading is 18 and the gain is set to 22 dB, the maximum per channel power is -17.6 dBm.

Use Table 2-2 to calculate per-channel power as a function of the maximum total number of channels at full loading. Contact Cisco TAC with any questions or concerns regarding maximum input power or setting the upgrade path.

Table 2-2 Maximum Channel Power 

Composite Input Power (dBm)
4
3
2
1
0
-1
-2
-3
-4
-5
Corresponding Max. Gain (dB)
13
14
15
16
17
18
19
20
21
22
Number of Channels at Full Loading
Maximum per Channel Input Power at Maximum Gain Setting (dBm)

1

4.0

3.0

2.0

1.0

0.0

-1.0

-2.0

-3.0

-4.0

-5.0

2

1.0

0.0

-1.0

-2.0

-3.0

-4.0

-5.0

-6.0

-7.0

-8.0

3

-0.8

-1.8

-2.8

-3.8

-4.8

-5.8

-6.8

-7.8

-8.8

-9.8

4

-2.0

-3.0

-4.0

-5.0

-6.0

-7.0

-8.0

-9.0

-10.0

-11.0

5

-3.0

-4.0

-5.0

-6.0

-7.0

-8.0

-9.0

-10.0

-11.0

-12.0

6

-3.8

-4.8

-5.8

-6.8

-7.8

-8.8

-9.8

-10.8

-11.8

-12.8

7

-4.5

-5.5

-6.5

-7.5

-8.5

-9.5

-10.5

-11.5

-12.5

-13.5

8

-5.0

-6.0

-7.0

-8.0

-9.0

-10.0

-11.0

-12.0

-13.0

-14.0

9

-5.5

-6.5

-7.5

-8.5

-9.5

-10.5

-11.5

-12.5

-13.5

-14.5

10

-6.0

-7.0

-8.0

-9.0

-10.0

-11.0

-12.0

-13.0

-14.0

-15.0

11

-6.4

-7.4

-8.4

-9.4

-10.4

-11.4

-12.4

-13.4

-14.4

-15.4

12

-6.8

-7.8

-8.8

-9.8

-10.8

-11.8

-12.8

-13.8

-14.8

-15.8

13

-7.1

-8.1

-9.1

-10.1

-11.1

-12.1

-13.1

-14.1

-15.1

-16.1

14

-7.5

-8.5

-9.5

-10.5

-11.5

-12.5

-13.5

-14.5

-15.5

-16.5

15

-7.8

-8.8

-9.8

-10.8

-11.8

-12.8

-13.8

-14.8

-15.8

-16.8

16

-8.0

-9.0

-10.0

-11.0

-12.0

-13.0

-14.0

-15.0

-16.0

-17.0

17

-8.3

-9.3

-10.3

-11.3

-12.3

-13.3

-14.3

-15.3

-16.3

-17.3

18-

-8.6

-9.6

-10.6

-11.6

-12.6

-13.6

-14.6

-15.6

-16.6

-17.6

19

-8.8

-9.8

-10.8

-11.8

-12.8

-13.8

-14.8

-15.8

-16.8

-17.8

20

-9.0

-10.0

-11.0

-12.0

-13.0

-14.0

-15.0

-16.0

-17.0

-18.0

21

-9.2

-10.2

-11.2

-12.2

-13.2

-14.2

-15.2

-16.2

-17.2

-18.2

22

-9.4

-10.4

-11.4

-12.4

-13.4

-14.4

-15.4

-16.4

-17.4

-18.4

23

-9.6

-10.6

-11.6

-12.6

-13.6

-14.6

-15.6

-16.6

-17.6

-18.6

24

-9.8

-10.8

-11.8

-12.8

-13.8

-14.8

-15.8

-16.8

-17.8

-18.8

25

-10.0

-11.0

-12.0

-13.0

-14.0

-15.0

-16.0

-17.0

-18.0

-19.0

26

-10.1

-11.1

-12.1

-13.1

-14.1

-15.1

-16.1

-17.1

-18.1

-19.1

27

-10.3

-11.3

-12.3

-13.3

-14.3

-15.3

-16.3

-17.3

-18.3

-19.3

28

-10.5

-11.5

-12.5

-13.5

-14.5

-15.5

-16.5

-17.5

-18.5

-19.5

29

-10.6

-11.6

-12.6

-13.6

-14.6

-15.6

-16.6

-17.6

-18.6

-19.6

30

-10.8

-11.8

-12.8

-13.8

-14.8

-15.8

-16.8

-17.8

-18.8

-19.8

31

-10.9

-11.9

-12.9

-13.9

-14.9

-15.9

-16.9

-17.9

-18.9

-19.9

32

-11.1

-12.1

-13.1

-14.1

-15.1

-16.1

-17.1

-18.1

-19.1

-20.1


2.2 Electrical Specifications

The ONS 15216 EDFA2 uses a power supply that meets the electrical specifications listed in Table 2-3.

Table 2-3 ONS 15216 EDFA2 Electrical Specifications 

Requirement
Specification

Input voltage

-48 VDC

Maximum power consumption

< 25 W at 65°C end of life

Minimum supply voltage

-40 VDC

Minimum turn-on supply voltage

-43 VDC

Maximum supply voltage

-57 VDC or under

Maximum current

0.52 A


2.3 Mechanical Specifications

Table 2-4 lists the ONS 15216 EDFA2 mechanical specifications.

Table 2-4 ONS 15216 EDFA2 Mechanical Specifications

Requirement
Specification

Dimensions (H x W x D)

1 3/4 in. x 17 3/16 in. x 11 in. (4.4 cm x 43.7 cm x 27.9 cm)

Weight

5.45 lb (2.47 kg)

Ambient operating temperature

32 to 122°F (0 to 50°C)

Storage temperature

-40 to 185°F (-40 to 85°C)

Humidity operation

Relative humidities of 5 to 95%, non-condensing. With ambient temperatures above 84° F (29°C), the relative humidity may be limited to that corresponding to a specific humidity of 0.024 pounds of water per pound of dry air.

Humidity storage

Relative humidities of 5 to 95%, non-condensing. With ambient temperatures above 84° F (29°C), the relative humidity may be limited to that corresponding to a specific humidity of 0.024 pounds of water per pound of dry air.

Connector types

SC/UPC Bulkhead connectors

Mean time between failures (MTBF)

12.7 years as per calculation procedure outlined in TR-NWT-000332, Issue 4, Method 1


2.4 External Features

The ONS 15216 EDFA2 has the following external features:

Front panel LEDs, graphics, and warning displays

Brackets for rack mounting (including reversible ears that permit front, mid,
and rear mounting)

Rear and side cooling vents

Access door for fiber cleaning

Fiber routing and retaining feature

Two threaded grounding studs on rear and a pair of threaded grounding holes on each side

Screw lug terminal block for power connection

RJ-45 connector for external alarm connection

RJ-45 connector for LAN connection

SC/UPC connectors for optical interface

DB-9 female connector for craft EIA/TIA-232 serial interface connection

Figure 2-1 displays a mechanical outline of the external features and dimensions of the ONS 15216 EDFA2.

Figure 2-1 ONS 15216 EDFA2 Dimensions

2.5 Front Panel

Figure 2-2 shows the ONS 15216 EDFA2 front panel in detail. The front panel provides an all-front access (fibers, power, alarm contact, and management interface) that complies with international standards.

Figure 2-2 ONS 15216 EDFA2 Front Panel

Table 2-5 describes the ONS 15216 EDFA2 front panel features.

Table 2-5 ONS 15216 EDFA2 Front Panel Features 

Feature
Description

Terminal strip

Terminal strip for supplying power to the ONS 15216 EDFA2. Attach AWG 18 stranded power wires to appropriate terminals.

Threaded grounding holes

Threaded grounding holes (#10-32) to ground the ONS 15216 EDFA2.

Alarm Out

RJ-45 connector used for alarm system connection. (See the "Alarm Out Relay Interface (RJ-45)" section on page 3-5 for additional information.)

Serial port connection (EIA/TIA-232)

Serial port for local or remote (modem) data communication connection. (See Chapter 3, "Installation" for additional information.)

Label

Laser warnings, designation labels, and power level warning.

Status LEDs

LEDs indicating status of power, fail, loss of signal, Ethernet link availability and Ethernet link traffic. (See the "Alarm LEDs" section on page 3-6.)

Fiber input

SC/UPC fiber input port.

Fiber output

SC/UPC fiber output port.

Monitor output

SC/UPC port for fiber that taps off 1% of output signal for monitoring purposes.

Chassis ground lugs

Rear panel grounding post to attach chassis ground wire using #8-32 nut.

LAN

RJ-45 connector used for 10BASE-T Ethernet connection. For more information, see the "LAN Interface (Ethernet)" section on page 3-14.



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Posted: Sun Apr 2 03:01:14 PDT 2006
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