Cabletron Systems MicroMMAC-44T Guía de usuario Pagina 33
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REQUIREMENTS/SPECIFICATIONS
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NOTE: Transmitter Power decreases as temperatures rise and increases
as temperatures fall. Use the Output Power Coefficient to calculate
increased or decreased power output for an operating environment. For
example, the typical power output at 25
°
C is -16.4 dBm.
For a 4
°
C temperature increase, multiply the typical coefficient
(-0.15 dBm) by four and add the result to typical output power
(4 x -0.15 dBm + -16.4 = -17.0).
NOTE: The transmitter power levels provided above are Peak Power
Levels after optical overshoot. Use a Peak Power Meter to correctly
compare the values given to those measured on any particular port.
When measuring power levels with an Average Power Meter, add 3 dBm
Fall Time 2.5 nsec 2.2 nsec 5.0 nsec
Duty Cycle 50.1% 49.6% 50.7%
Bit Error Rate: Better than 10
-10
Table 2-9. TPIM-F3 Specifications
Parameter Typical Minimum Maximum
Receive
Sensitivity
dBm
Less Power
More Power
-40 -35 -30 -25 -20 -15 -10 -5 0
Maximum
Receive
Input Power
Transmitter Power*
(At 25°C into
8.3/125µm fiber)
Minimum Sensitivity (-30.0)
Typical Sensitivity (-31.0)
Maximum Sensitivity (-36.0)
Maximum Receive Input (-6.99)
Typical Receive Input (-7.5)
Minimum Receive Input (-9.72)
Maximum Transmit Power (-12.0)
Typical Transmit Power (-15.5)
Minimum Transmit Power (-21.0)
* Transmit Power Typical Power Minimum Power Maximum Power
Coefficient
(See Note Below)-0.15dBm/ °C -0.12 dBm/ °C-0.18 dBm/ °
C
- MICROMMAC-22T/24T/42T/44T 1
- STACKABLE TOKEN RING 1
- INTELLIGENT HUBS 1
- USER’S GUIDE 1
- CONTENTS 6
- CHAPTER 4 LOCAL MANAGEMENT 7
- CHAPTER 5 TROUBLESHOOTING 7
- CHAPTER 1 9
- 1.2 MicroMMAC-T OVERVIEW 10
- 1.3 MicroMMAC-T FEATURES 11
- INTRODUCTION 12
- 1.4 STACKABLE CAPABILITIES 16
- 1.8 RECOMMENDED READING 19
- 1.9 GETTING HELP 19
- CHAPTER 2 20
- REQUIREMENTS/SPECIFICATIONS 20
- 50/125 µm 13.0 dB or less 25
- 62.5/125 µm 16.0 dB or less 25
- 100/140 µm 19.0 dB or less 25
- 2.3 COM PORT SPECIFICATIONS 28
- 2.4 TPIM SPECIFICATIONS 29
- Figure 2-3. TPIM-T1 Pinouts 30
- Figure 2-4. TPIM-T2 Pinouts 30
- Figure 2-5. TPIM-T4 Pinouts 31
- Figure 2-6. TPIM-F2 31
- Mode fiber Optic cabling 32
- Duty Cycle 50.1% 49.6% 50.7% 33
- 2.5 GENERAL SPECIFICATIONS 34
- 2.5.3 Safety 35
- 2.5.4 Physical 35
- 2.5.5 Service 35
- CHAPTER 3 36
- INSTALLATION 36
- 3.6 SETTING THE RING SPEED 41
- RJ45 Plug to MIC Connector 43
- RJ45 Plug 44
- 3.9 INSTALLING TPIM MODULES 47
- 3.9.2 TPIM Installation 49
- TPIM as shown in Figure 3-15 50
- Figure 3-15. The TPIM-T1 51
- Figure 3-16. The TPIM-T2/-T4 52
- Figure 3-17. The TPIM-F2/-F3 53
- CHAPTER 4 55
- LOCAL MANAGEMENT 55
- To access Local Management: 58
- 4.3 USING LOCAL MANAGEMENT 60
- 4.3.4 The SNMP TRAPS Screen 70
- Table 4-2. MIB Commands 92
- Navigation Built-In Special 92
- CHAPTER 5 97
- 5.2 USING THE LCD DISPLAY 98
- 5.2.1 Static System Messages 99
- 5.2.2 Alarm Messages 100
- TROUBLESHOOTING 101
- 5.2.4 Saved System Messages 102
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