Huawei Quidway S9300

To Next Page

To Previous Page

Figure 5-3 Slots of the S9303

LPU

MCU MCU

LPU

4/5

Table 5-2, Table 5-3, and Table 5-4 describe the slot distribution on the S9300.

Table 5-2 Slot distribution of the S9312

Slot Quant

ity

Height Note

1-12 12 35 mm Slots for LPUs

13, 14 2 35 mm Slots for SRUs in 1+1 backup mode

Table 5-3 Slot distribution on the S9306

Slot

Quant

ity

Height Note

1-6 6 35 mm Slots for LPUs

7, 8 2 35 mm Slots for SRUs in 1+1 backup mode

Table 5-4 Slot distribution on the S9303

Slot

Quant

ity

Height Note

1-3 3 35 mm Slots for LPUs

4, 5 2 19.8 mm Slots for MCUs in 1+1 backup mode

Board Dimensions

Table 5-5 provides the dimensions of each board of the S9300. For the definitions of depth,

width, and height of a board, see Figure 5-4.

5 Boards

Quidway S9300 Terabit Routing Switch

Hardware Description

5-8 Huawei Proprietary and Confidential

Issue 01 (2010-12-15)

Main Page

About this Document5
Table of Contents7
Cabinets25
Introduction to the N66E Cabinet26
Appearance of the N66E Cabinet26
Technical Specifications of the N66E Cabinet27
Figure 1-1 N66E Cabinet27
Table 1-1 Technical Specifications of the N66 Cabinet27
Components of the N66E Cabinet28
Figure 1-2 Components of the Rear-Serviceable N66E Cabinet28
Operating Environment of the N66E Cabinet29
Structural Features of the N66E Cabinet29
Table 1-2 Requirements for the Operating Environment of the N66E Cabinet29
Figure 1-3 Cable Apertures on the Cabinet Top30
Figure 1-4 ESD Jack on the N66E Cabinet31
Figure 1-5 Combined N66E Cabinets31
Introduction to the N68E Cabinet32
Appearance of the N68E Cabinet32
Technical Specifications of the N68E Cabinet33
Figure 1-6 Appearance of the N68E Cabinet33
Table 1-3 Technical Specifications of the N68E Cabinet33
Components of the N68E Cabinet34
Operating Environment of the N68E Cabinet34
Figure 1-7 Structure of the N68E Cabinet34
Structural Features of the N68E Cabinet35
Table 1-4 Requirements for the Operating Environment of the N68E Cabinet35
Figure 1-8 Cable Apertures on the Cabinet Top36
Figure 1-9 ESD Jack in the Middle of the N68E Cabinet36
Figure 1-10 Combined N68E Cabinets37
Overview of the S930039
Introduction40
Hardware Structure40
S931241
Figure 2-1 Appearance and Components of the S9312 (1)41
Figure 2-2 Appearance and Components of the S9312 (2)42
Figure 2-3 Layout of Slots on the S931243
Table 2-1 Components of the S931243
S930644
Figure 2-4 Appearance and Components of the S9306 (1)44
Figure 2-5 Appearance and Components of the S9306 (2)45
Figure 2-6 Layout of Slots on the S930645
S930346
Figure 2-7 Appearance and Components of the S9303 (1)46
Table 2-2 Components of the S930646
Figure 2-8 Appearance and Components of the S9303 (2)47
Figure 2-9 Layout of Slots on the S930347
Table 2-3 Components of the S930347
System Configuration and Physical Specifications48
System Configuration48
Table 2-4 System Configuration of the S930048
Physical Specifications50
Table 2-5 Physical Specifications of the S931250
Table 2-6 Physical Specifications of the S930651
Table 2-7 Physical Specifications of the S930351
Power Supply53
Introduction54
Configuration and Operation Modes of the Power Supplies54
Figure 3-1 Configuration of the S9312 Power Supplies55
Figure 3-2 Configuration of the S9306 Power Supplies57
Power Supply Principle58
Figure 3-3 Configuration of the S9303 Power Supplies58
Figure 3-4 Principle of the DC Power Supplies on the S930059
DC Power Supply60
Appearance60
Figure 3-5 Principle of the AC Power Supplies on the S930060
Panel61
Figure 3-6 Appearance of the DC Power Supply of the S930061
Figure 3-7 Panel and Components of the DC Power Supply of the S930061
Table 3-1 Description of the Indicators of the DC Power Supply61
Function Overview62
Technical Specifications62
Table 3-2 Relation between the DC Power Input Cables and the Terminals62
Table 3-3 Technical Specifications of the DC Power Supply62
AC Power Supply63
Appearance63
Panel63
Figure 3-8 Appearance of the AC Power Supply of the S930063
Figure 3-9 Panel of the AC Power Supply64
Table 3-4 Description of the Indicators of the AC Power Supply64
Function Overview65
Technical Specifications65
Table 3-5 Technical Specifications of the AC Power Supply65
Heat Dissipation System67
Introduction68
Heat Dissipation System of the S931268
Heat Dissipation System of the S930668
Figure 4-1 Airflow in the S931268
Heat Dissipation System of the S930369
Fan Module69
Figure 4-2 Airflow in the S930669
Figure 4-3 Airflow in the S930369
Constitution of the Fan Module70
Panel of the Fan Module70
Figure 4-4 Panel of the Fan Module of the S930070
Table 4-1 Description of the Indicators of the Fan Module70
Fan Module Functions71
Figure 4-5 S9306 Heat Dissipation Zones71
Air Filter72
Air Filter of the S931272
Figure 4-6 S9312 Heat Dissipation Zones72
Air Filter of the S930673
Figure 4-7 Air Filter of the S931273
Figure 4-8 Air Filter of the S930673
Air Filter of the S930374
Technical Specifications74
Technical Specifications of the Fan Modules on the S930074
Figure 4-9 Air Filter of the S930374
Table 4-2 Technical Specifications of the Fan Module74
Boards77
Introduction80
Board Classification80
Table 5-1 Boards Supported by the S930080
Slot Distribution and Board Dimensions82
Huawei Proprietary and Confidential83
Figure 5-1 Slots of the S931283
Figure 5-2 Slots of the S930683
Figure 5-3 Slots of the S930384
Table 5-2 Slot Distribution of the S931284
Table 5-3 Slot Distribution on the S930684
Table 5-4 Slot Distribution on the S930384
Relation between Boards85
Figure 5-4 Dimensions Diagram85
Table 5-5 Board Dimensions85
Figure 5-5 Relation between Boards on the S9312 and S930686
Interfaces on the Boards87
Figure 5-6 Relation between Boards on the S930387
Table 5-6 Distribution of Interfaces on the Boards87
SRU - Main Control Unit89
Introduction89
Function and Application90
Table 5-7 Lists of Srus90
Panel91
Figure 5-7 Appearance of the LE02SRUA Panel91
Figure 5-8 Appearance of the LE03SRUA and LE02SRUB Panel91
Interfaces92
Table 5-8 Description of the Buttons and Indicators on the SRU Panel92
Table 5-9 Types and Functions of the Interfaces on the SRU93
Table 5-10 Attributes of the 10M/100M Base-TX Ethernet Interface93
Table 5-11 Attributes of the Console Interface93
Huawei Proprietary and Confidential93
Table 5-12 Attributes of the BITS Interfaces94
Table 5-13 Technical Specifications of the SRU94
Interface Attributes95
Technical Specifications95
MCUA - Main Control Unit95
Introduction95
Function and Application95
Panel96
Figure 5-9 Appearance of the LE02MCUA Panel96
Figure 5-10 Appearance of the LE03MCUA Panel96
Interfaces97
Table 5-14 Description of the Buttons and Indicators on the MCUA Panel97
Table 5-15 Types and Functions of the Interfaces on the MCUA97
Huawei Proprietary and Confidential97
Interface Attributes98
Table 5-16 Attributes of the 10M/100M Base-TX Ethernet Interface98
Table 5-17 Attributes of the Console Interface98
Table 5-18 Attributes of the RS485 Interface99
Table 5-19 Attributes of the MON Interface99
Table 5-20 Attributes of the BITS Interfaces99
Technical Specifications100
FSUA - Enhanced Flexible Service Unit100
Introduction100
Figure 5-11 Position of FSU in SRU100
Table 5-21 Technical Specifications of the MCUA100
Figure 5-12 Appearance of the FSUA Panel101
Table 5-22 Description of the Buttons and Indicators on the FSUA Panel101
Huawei Proprietary and Confidential Issue102
Function and Application102
Panel102
Technical Specifications102
VSTSA - Stacking Card on the Main Control Board102
Introduction102
Figure 5-13 Position of VSTSA in SRU102
Table 5-23 Technical Specifications of the FSUA102
Panel103
Figure 5-14 Appearance of the VSTSA Panel103
Table 5-24 Description of the Buttons and Indicators on the VSTSA Panel103
Interfaces104
Table 5-25 Types and Functions of the Interfaces on the VSTSA104
Technical Specifications105
CMU - Centralized Monitoring Unit105
Introduction105
Figure 5-15 External Cable Connections of a Stack105
Table 5-26 Technical Specifications of the VSTSA105
Function and Application106
Panel106
Figure 5-16 Position of the Cmus106
Figure 5-17 Appearance of the CMU106
Interfaces107
Interface Attributes107
Table 5-27 Description of the Buttons and Indicators on the CMU Panel107
Table 5-28 Types and Functions of the Interfaces on the CMU107
Technical Specifications108
SPU - VAMPA VAS Board108
Table 5-29 Attributes of the RS485 Interface108
Table 5-30 Attributes of the MON Interface108
Table 5-31 Technical Specifications of the CMU108
Introduction109
Function and Application109
Panel109
Description of Interfaces on the SPU110
Figure 5-18 VAMPA Panel110
Table 5-32 Buttons and Indicators on the VAMPA Panel110
Attributes of Interfaces on the SPU111
Technical Specifications111
Table 5-33 Interfaces on the VAMPA and Their Functions111
Table 5-34 Serial Interface Attributes111
Table 5-35 Ethernet Interface Attributes111
G48S - 48-Port 100/1000BASE-X Interface Card (SFP)112
Introduction112
Table 5-36 Technical Specifications of the VAMPA112
Table 5-37 Lists of G48S112
Function and Application113
Panel113
Figure 5-19 Appearance of the G48S Panel113
Table 5-38 Description of Buttons and Indicators on the G48S Panel113
Interfaces114
Interface Attributes114
Table 5-39 Types and Functions of the Interfaces on the G48S114
Table 5-40 Attributes of the 1000M Base-SFP Ethernet Optical Interfaces114
Table 5-41 Attributes of the SFP Optical Module (1000 Mbit/S)115
Technical Specifications116
Table 5-42 Attributes of 1000M Colorized Optical Modules116
Table 5-43 Technical Specifications of the G48S116
G48T - 48-Port 100/1000BASE-T Interface Card (RJ45)117
Introduction117
Table 5-44 Lists of G48T117
Function and Application118
Panel118
Figure 5-20 Appearance of the G48T Panel118
Table 5-45 Description of Buttons and Indicators on the G48T Panel118
Interfaces119
Table 5-46 Types and Functions of the Interfaces on the G48T119
Table 5-47 Attributes of the 100M/1000M Base-T Ethernet Interface119
Interface Attributes120
Technical Specifications120
G48VA - 48-Port 100M/1000M Ethernet Poe Electrical Interface Card (EA, RJ45, POE)120
Introduction120
Function and Application120
Table 5-48 Technical Specifications of the G48T120
Panel121
Figure 5-21 Appearance of the G48VA Panel121
Interfaces122
Interface Attributes122
Table 5-49 Description of Buttons and Indicators on the G48VA Panel122
Table 5-50 Types and Functions of the Interfaces on the G48VA122
Table 5-51 Attributes of the 100M/1000M Base-T Ethernet Interface122
Technical Specifications123
G48CEAT - 12-Port 100M/1000M Ethernet Optical Interface + 36-Port 100M/1000M Combo LPU (EA, RJ45/SFP)123
Introduction123
Table 5-52 Technical Specifications of the G48VA123
Function and Application124
Panel124
Figure 5-22 Appearance of the G48CEAT Panel124
Interfaces125
Interface Attributes125
Table 5-53 Description of Buttons and Indicators on the G48CEAT Panel125
Table 5-54 Types and Functions of the Interfaces on the G48CEAT125
Table 5-55 Attributes of the 1000M Base-SFP Ethernet Optical Interface126
Table 5-56 Attributes of the SFP Optical Module (1000 Mbit/S)126
Table 5-57 Attributes of 1000M Colorized Optical Modules127
Technical Specifications128
F48S - 48-Port 100BASE-FX Interface Card (SFP)128
Table 5-58 Attributes of the 100M/1000M Base-T Ethernet Electrical Interface128
Table 5-59 Technical Specifications of the G48CEAT128
Introduction129
Function and Application129
Panel129
Figure 5-23 Appearance of the F48S Panel129
Table 5-60 Lists of F48S129
Interfaces130
Interface Attributes130
Table 5-61 Description of Buttons and Indicators on the F48S Panel130
Table 5-62 Types and Functions of the Interfaces on the F48S130
Technical Specifications131
Table 5-63 Interface Attributes of the FE Optical Interface Card (100M Base-SFP)131
Table 5-64 Attributes of the SFP Optical Module (100 Mbit/S)131
F48T - 48-Port 100/1000BASE-T Interface Card (RJ45)132
Introduction132
Table 5-65 Technical Specifications of the F48S132
Table 5-66 Lists of F48T132
Function and Application133
Panel133
Figure 5-24 Appearance of the F48T Panel133
Interfaces134
Interface Attributes134
Table 5-67 Description of Buttons and Indicators on the F48T Panel134
Table 5-68 Types and Functions of the Interfaces on the F48T134
Table 5-69 Attributes of the 10M/100M Base-T Ethernet Interface134
Technical Specifications135
G24CA - 24-Port 100/1000BASE-X and 8-Port 100/1000BASE-T Interface Card (SFP/RJ45)135
Introduction135
Table 5-70 Technical Specifications of the F48T135
Function and Application136
Panel136
Figure 5-25 Appearance of the G24CA Panel136
Interfaces137
Table 5-71 Description of Buttons and Indicators on the G24CA Panel137
Table 5-72 Types and Functions of the Interfaces on the G24CA137
Interface Attributes138
Table 5-73 Attributes of the 1000M Base-SFP Ethernet Optical Interfaces138
Table 5-74 Attributes of the SFP Optical Module (1000 Mbit/S)138
Table 5-75 Attributes of 1000M Colorized Optical Modules139
Technical Specifications140
G24CEAS - 24-Port 100M/1000M Ethernet Optical Interface and 8-Port 100M/1000M Combo Interface Card (EA, SFP/RJ45, 1588)140
Table 5-76 Attributes of the 100M/1000M Base-T Ethernet Electrical Interface140
Table 5-77 Technical Specifications of the G24CA140
Introduction141
Function and Application141
Panel141
Figure 5-26 Appearance of the G24CEAS Panel141
Interfaces142
Table 5-78 Description of Buttons and Indicators on the G24CEAS Panel142
Table 5-79 Types and Functions of the Interfaces on the G24CEAS142
Interface Attributes143
Table 5-80 Attributes of the 1000M Base-SFP Ethernet Optical Interface143
Table 5-81 Attributes of the SFP Optical Module (1000 Mbit/S)143
Table 5-82 Attributes of 1000M Colorized Optical Modules144
Technical Specifications145
S24XA - 24-Port 100M/1000M Ethernet Optical and 2-Port 10GE Optical Interface Card (EA, SFP/XFP)145
Table 5-83 Attributes of the 10M/100M/1000M Base-T Ethernet Electrical Interface145
Table 5-84 Technical Specifications of the G24CEAS145
Introduction146
Function and Application146
Figure 5-27 Appearance of the S24XA Panel146
Table 5-85 Description of Buttons and Indicators on the S24XA Panel147
Table 5-86 Types and Functions of the Interfaces on the S24XA147
Huawei Proprietary and Confidential Issue148
Table 5-87 Interface Attributes of the GE Optical Interface Card (1000M Base-SFP)148
Table 5-88 Attributes of the SFP Optical Module (1000 Mbit/S)148
Table 5-89 Attributes of 1000M Colorized Optical Modules149
Table 5-90 Interface Attributes of the Optical Interface Card (10G Base-XFP)150
Table 5-91 Attributes of the XFP Optical Module (10 Gbit/S)150
Table 5-92 Technical Specifications of the S24XA150
Panel151
Interfaces151
T24XA - 24-Port 100M/1000M Ethernet Electrical and 2-Port 10GE Optical Interface Card (EA, SFP/XFP)151
Introduction151
Function and Application151
Panel152
Interfaces152
Figure 5-28 Appearance of the T24XA Panel152
Table 5-93 Description of Buttons and Indicators on the T24XA Panel152
Interface Attributes153
Table 5-94 Types and Functions of the Interfaces on the T24XA153
Table 5-95 Attributes of the 100M/1000M Base-T Ethernet Interface153
Table 5-96 Attributes of the 10G Base-XFP Optical Interface153
Technical Specifications154
G24S - 24-Port 100/1000BASE-X Interface Card (SA,SFP)154
Table 5-97 Attributes of the XFP Optical Module (10 Gbit/S)154
Table 5-98 Technical Specifications of the T24XA154
Introduction155
Function and Application155
Panel155
Table 5-99 Lists of G24S155
Figure 5-29 Appearance of the G24SA Panel156
Figure 5-30 Appearance of the G24SC or G24SD Panel156
Table 5-100 Description of Buttons and Indicators on the G24S Panel156
Interfaces157
Interface Attributes157
Table 5-101 Types and Functions of the Interfaces on the G24S157
Table 5-102 Attributes of the 1000M Base-SFP Ethernet Optical Interfaces157
Table 5-103 Attributes of the SFP Optical Module (1000 Mbit/S)158
Table 5-104 Attributes of 1000M Colorized Optical Modules158
Technical Specifications159
Table 5-105 Technical Specifications of the G24S159
X12SA - 12-Port 10GE Optical Interface Card (SA, SFP+)160
Introduction160
Function and Application160
Panel160
Figure 5-31 Appearance of the X12SA Panel160
Interfaces161
Interface Attributes161
Table 5-106 Description of Buttons and Indicators on the X12SA Panel161
Table 5-107 Types and Functions of the Interfaces on the X12SA161
Technical Specifications162
Table 5-108 Attributes of the 10G Base-XFP Optical Interface162
Table 5-109 Attributes of the SFP+ Optical Module (10 Gbit/S)162
Table 5-110 Technical Specifications of the X12SA162
E12GA - 12-Port 1000M EPON Optical Interface + 12-Port 100M/1000M Optical Interface Card (SFP)163
Introduction163
Function and Application163
Panel163
Figure 5-32 Appearance of the E12GA Panel164
Table 5-111 Description of Buttons and Indicators on the E12GA Panel164
Interfaces165
Interface Attributes165
Table 5-112 Types and Functions of the Interfaces on the E12GA165
Table 5-113 Attributes of the 1000M Base-PX20-SFP GEPON Optical Interface165
Table 5-114 Attributes of the GEPON Optical Module (1000 Mbit/S)165
Table 5-115 Attributes of the 1000M Base-SFP Ethernet Optical Interface166
Table 5-116 Attributes of the SFP Optical Module (1000 Mbit/S)166
Table 5-117 Attributes of 1000M Colorized Optical Modules167
Technical Specifications168
X4UX - 4-Port 10GBASE-X Interface Card (XFP)168
Introduction168
Table 5-118 Technical Specifications of the E12GA168
Table 5-119 Lists of X4UX168
Function and Application169
Panel169
Figure 5-33 Appearance of the Panel of the X4UX169
Table 5-120 Description of Buttons and Indicators on the X4UX Panel169
Interfaces170
Interface Attributes170
Table 5-121 Types and Functions of the Interfaces on the X4UX170
Table 5-122 Attributes of the 10G Base-XFP Optical Interface170
Technical Specifications171
X2UX - 2-Port 10GBASE-X Interface Card (XFP)171
Table 5-123 Attributes of the XFP Optical Module (10 Gbit/S)171
Table 5-124 Technical Specifications of the X4UX171
Introduction172
Huawei Proprietary and Confidential172
Function and Application172
Panel172
Figure 5-34 Appearance of the Panel of the X2UX172
Table 5-125 Lists of X2UX172
Interfaces173
Interface Attributes173
Table 5-126 Description of Buttons and Indicators on the X2UX Panel173
Table 5-127 Types and Functions of the Interfaces on the X2UX173
Technical Specifications174
Table 5-128 Attributes of the 10G Base-XFP Optical Interface174
Table 5-129 Attributes of the XFP Optical Module (10 Gbit/S)174
Table 5-130 Technical Specifications of the X2UX174
CKM - Clock Board175
Introduction175
Function and Application175
Interface Attributes175
Table 5-131 Types and Functions of the BITTS Interfaces176
Table 5-132 Attributes of the BITS Interfaces176
Technical Specifications177
Table 5-133 Technical Specifications of the CKM177
Cables179
DC Power Cable180
Introduction180
Structure180
Technical Specifications180
Figure 6-1 Internal DC Power Cable180
Table 6-1 Technical Specifications of the DC Power Cables in the Cabinet181
Table 6-2 List of External DC Power Cables in Different Cabinet Configuration Schemes181
AC Power Cable182
Introduction183
Structure183
Technical Specifications183
Figure 6-2 Appearance of the Internal AC Power Cables183
Table 6-3 Technical Specifications of the AC Power Cables in the Cabinet183
Grounding Cable184
Introduction184
Structure184
Technical Specifications of the S9300 Grounding Cables184
Console Cable184
Table 6-4 Technical Specifications of the AC Power Cables out of the Cabinet184
Table 6-5 Technical Specifications of the S9300 Grounding Cables184
Introduction185
Structure185
Figure 6-3 Console Cable185
Table 6-6 Pin Assignments of the Console Cable185
Technical Specifications186
Ethernet Cable186
Introduction186
Structure186
Table 6-7 Technical Specifications of the Console Cable186
Figure 6-4 Structure of RJ45187
Table 6-8 Pin Assignments of the Straight-Through Cable187
Table 6-9 Pin Assignments of the Crossover Cable188
Table 6-10 Technical Specifications of the Straight-Through Cable188
Optical Fiber189
Introduction189
Table 6-11 Technical Specifications of the Crossover Cable189
Table 6-12 Types of the Optical Fibers189
Optical Connector190
Technical Specifications190
Huawei Proprietary and Confidential Issue190
Figure 6-5 Appearance of the LC/PC Optical Connector190
Table 6-13 Technical Specifications of the Optical Fiber190
Clock Cable191
Introduction191
Figure 6-6 Clock Cable Connections191
Structure192
Figure 6-7 Structure of the 120Ω Trunk Cable192
Figure 6-8 Structure of the Straight-Through Cable192
Technical Specifications193
Stack Cables194
Structure195
Technical Specifications195
Figure 6-11 Stack Cable Structure (1)195
Figure 6-12 Stack Cable Structure (2)195
Table 6-14 Technical Specifications of the Stack Cables195
List of Indicators197
Fan Module Indicators198
Power Supply Indicators198
Table 7-1 Description of the Fan Module Indicators198
Table 7-2 Description of the DC Power Supply Indicators198
SRU Indicators199
Table 7-3 Description of the AC Power Supply Indicators199
Table 7-4 Description of the Buttons and Indicators on the SRU Panel199
MCUA Indicators200
Table 7-5 Description of the MCU Indicators200
LPU Indicators201
Table 7-6 Description of the Indicators on the Panel of the LPU201
CMU Indicators202
Table 7-7 Interface Indicators of the Optical LPU202
Table 7-8 Interface Indicators of the Electrical LPU202
Table 7-9 Description of the CMU Indicators203
List of Boards205
Boards Supported by the S9300206
Table 8-1 Boards Supported by the S9300206
Power Consumption and Weight208
Table 8-2 Power Consumption and Weight of Boards208
List of Interface Attributes211
Electrical Interface Attributes212
10GE Optical Interface Attributes212
Table 9-1 Attributes of the 10Base-T/100Base-Tx/1000Base-T-RJ45 Electrical Interface212
Table 9-2 Interface Attributes of the 10GE Optical LPU212
GE Optical Interface Attributes213
Table 9-3 Attributes of the SFP+ Optical Module (10 Gbit/S)213
Table 9-4 Attributes of the XFP Optical Module (10 Gbit/S)213
Table 9-5 Interface Attributes of the GE Optical LPU (1000M Base-SFP)214
Table 9-6 Attributes of the SFP Optical Module (1000 Mbit/S)214
FE Optical Interface Attributes215
Table 9-7 Attributes of 1000M Colorized Optical Modules215
Table 9-8 Interface Attributes of the FE Optical LPU (100M Base-SFP)216
Table 9-9 Attributes of the SFP Optical Module (100 Mbit/S)216

Table of Contents

Other manuals for Huawei Quidway S9300

Related product manuals