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Appendix
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
265
IEC 61196-4
Values for coupling losses according to IEC 61196-4 already include spatial
attenuation of 2 m. To calculate the actual coupling loss, a spatial attenuation for
the distance of 2 m must be deducted from this value. The coupling loss for a
specified distance between the RCoax cable and the antenna of the
communication partner is therefore calculated according to the following formula:
c
d
= c
95
- 20 * log(4π * 2m / λ) + 20 * log(4πd / λ)
c
d
Coupling loss of the cable in dB for a specified distance between cable and
antenna.
c
95
c
95
value of the coupling loss (specified in the data sheet of the cable)
λ Wavelength of the electromagnetic oscillation in m; at a frequency of 2.4
GHz, the wavelength is 0.125 m.
d
Distance between cable and antenna in m.
For a frequency of 2.4 GHz, you can also calculate with the following equation in
which you must specify the distance d in meters:
c
d 2.4 GHz
= c
95
- 46 dB + 20 * log(100 * d)
For a SIEMENS SIMATIC NET IWLAN RCoax Cable PE 1/2'' 2.4 GHz (c
95
= 69
dB at 2.4 GHz), for example, this results in the following coupling losses:
UDistanceU UCoupling lossU
1 m 63 dB
2 m 69 dB
5 m 77 dB
10 m 83 dB
100 m 103 dB
Note
The formula is valid only for the 2.4 GHz RCoax cable.
Losses due to Power Splitters
Normally. when a double power splitter is used (one input, two outputs, for
example, RCoax N-Connect Female Power Splitter 2-Way) a loss of 3 dB must be
taken into account.
- Trademarks 3
- Prior to Startup 4
- Preface 5
- Biological Compatibility 8
- Contents 9
- C79000-G8976-C184-07 10
- Communication 13
- Wireless Access to a Wired E 15
- Multichannel Configuration 16
- Figu x 18
- LAN Communication 19
- 1.2.2 IP-based Communication 20
- Componen o 21
- NCE W78x 22
- P of the 23
- LED Display 25
- Replacing the C-PLUG 28
- 3.1 Ligh 31
- Grounding 32
- Power over Ethernet 32
- 3.2 Assembly and Connectors 33
- ANCE W78x 34
- 3.3.1 General Notes 35
- • 30 mm for the data leads 40
- It Works 44
- Creating a 44
- Using the vice 46
- Changing a used PRESET PLUG 46
- Primary S 47
- DLC Protocol 48
- Professional 49
- Professional SP2 50
- 4.5 Working with the Prim 52
- Removing a Module 55
- Principle of We 57
- 5.2 Starting Web Bas 59
- 5.2.1 Co 60
- 5.3 Selecting the W 61
- 5.4 Basic Wizard 63
- Subnet Mask input box 64
- 5.4.2 System name 65
- 5.4.3 Country Co 66
- Description 67
- SSID text box 67
- Wireless Mode list box 67
- 5.4.6 Adopt MAC Ad 69
- MAC mode list box 70
- Adopt MAC text box 71
- 5.4.7 Channel Settings (on 72
- Radio Channel list box 73
- 5.4.8 Finish 74
- 5.5 Security Wizard 75
- .5.1 Security Settings 76
- Protocols for 77
- SNMP Read Only Check Box 78
- Network-Specific Security 79
- Settings 79
- Inter SSID Com 81
- Predefined Security Levels 83
- Authentication 84
- Encryption key source 86
- Encryption 86
- Default Key list box 87
- Key text box 87
- Length list box 87
- RADIUS Se 88
- Dot1x user name text box 89
- Dot1x user password text box 89
- Pass phrase text box 90
- Highest 91
- 5.5.12 Finish 92
- .6 iPCF Wizard 93
- Transmit power list box 94
- Antenna Mode list box 94
- Security Settings with iPCF 96
- Security le 96
- Specifying 97
- the Key 97
- 5.6.4 Fi 98
- Interface 99
- 6.1.2 Th 100
- 6.1.4 Co m 102
- Cross-menu Commands 103
- CLI\ ... > 103
- .2 The System Menu 104
- Reading out the Country Lis 105
- The HiPath Access Point Mo 106
- Exiting the HiPath Mode 109
- CLI\SYSTE 110
- 6.2.2 IP 112
- Settings Menu Command 112
- Syntax of the Command Line 113
- Interface 113
- M\IP> 113
- 6.2.3 Services Menu Command 114
- CLI\SYSTEM\SERVICES> 115
- 6.2.4 Restart Menu Command 116
- M\RESTARTS> 117
- System Ev 118
- Reaction to System Events 119
- Syntax of the Command Line I 119
- CLI\SYSTEM\EVENT> 119
- 6.2.6 E-mail Config Menu Com 121
- Configurati 122
- Trap Submenu 122
- Groups Submenu 122
- Users Submenu 123
- CLI\SYSTEM\SNMP> 124
- CLI\SYSTEM\SNMP\GROUP> 125
- M\SNMP\USER> 126
- CLI\SYSTEM\SNMP\TRAP> 126
- 6.2.8 Sy 127
- S box: 128
- CLI\SYSTEM\SYSLOG> 129
- Time-of-Day for Sy 130
- CLI\SYSTEM\SNT 130
- Information on E 131
- CLI\SYSTEM\FAUL 131
- 6.2.11 Lo 132
- Configuration Package 134
- CLI\SYSTEM\LOADSAVE> 134
- 6.2.12 C-PLUG Menu Command 136
- C-PLUG Error Message 139
- CLI\SYSTEM\CPLUG> 140
- 6.3 Interfaces Menu 141
- Syntax of the Co 142
- CLI\INTERFACES\ETHERNET> 142
- 6.3.2 W 143
- LAN Menu Command 143
- Channel S 144
- Set values 146
- CLI\INTERFACES\WLAN1> 147
- C S\WLAN2> 147
- LI\INTERFACE 147
- 6.3.3 Advanced Submenu 149
- Antennas 151
- 6.3.4 SS mode only) 156
- ID List Submenu (client 156
- 6.3.5 Adva 157
- Handling 802.11b Clients 158
- 802.11g Expan 158
- Variable S 160
- CLI\INTERF \D 161
- ACES\WLAN1 ata Rates> 161
- 6.3.7 VA mand 162
- P Submenu Com 162
- 6.4 The nu 163
- Security Me 163
- CLI\SEC C\WLAN1> 169
- URITY\BASI 169
- CLI\SECURITY\BASIC\WLAN2> 169
- 6.4.2 Keys Menu Command 173
- .4.3 ACL Menu Command 174
- New Entry in the ACL 175
- RADIUS Server Menu Command 178
- Menu Command 179
- 6.4.5 Access 179
- 6.5 The Bridge Menu 180
- 6.5.1 WDS Menu Command 181
- CLI\BRIDGE\WDS\WLAN1> 182
- CLI\BRIDGE\WDS\WLAN2> 182
- 6.5.2 VLAN Menu Command 183
- VLAN ID Settings 185
- VLAN Setti 188
- User priori 189
- Port VLAN ID (o 190
- W788xRR) 190
- CLI\BRIDG 191
- EVLAN\VLAN_ID> 191
- C ORTS> 191
- LI\BRIDGE\VLAN\P 191
- A edundant 192
- Rapid Spanning Tree 193
- CLI\BRIDGE\SPANNING> 195
- Spanning T e 196
- Configurat id) Spanning Tree 199
- C PANNING\PORT 200
- LI\BRIDGE\S S> 200
- CLI\BRIDG THR> 202
- 6.5.7 NAT Menu Command 203
- Devices 205
- Configurat 205
- • SCALANCE W747-1R 208
- WLAN Access by Several Devi 208
- MAC Mode 208
- 6.6 The Filters Menu 210
- S and Line I 211
- Addresses 211
- CLI\FILTERS\MAC2FLT> 211
- 6.7 The I-Features Menu 213
- CLI\IFEATURES\IQOS\WLAN1> 214
- 6.7.2 iPCF Menu Command 215
- How iPCF Works 216
- When should iPCF be used? 216
- Configuration 217
- PNIO upda 217
- CLI\IFEATURES\IPCF\WLAN1> 218
- CLI\IFEATU 218
- RES\IPCF\WLAN2> 218
- Functional Description 219
- CLI\IFEATURES\LINKCHECK> 221
- 6.7.5 Redundancy Menu Comma 222
- CLI\IFEATURES\REDUNDANCY> 223
- 6.7.6 IP-Alive 224
- RES\IP_ALIVE> 225
- Information Menu 226
- Logging System Events 227
- CLI\INFORM\LOG> 227
- 6.8.2 Auth Log Menu Comma 228
- 6.8.3 Ve 229
- Logged on 230
- Clients 230
- CLI\INFORM\WLAN1> 231
- CLI\INFORM\WLAN2> 231
- 6.8.5 Ethernet Menu Command 232
- WLAN Menu Command 232
- Receive Errors: 234
- Transmit Errors 235
- Overlap AP 236
- \INFORM\WLAN2> 237
- 6.8.7 iQoS Menu Command 238
- 6.8.8 Spanning T 240
- Syntax of t 241
- 6.8.9 IP 242
- CLI\INF SIGNAL 247
- ORM\ > 247
- SCALANCE W78x 67 years 249
- Mechanical Properties 250
- Electrical P 250
- Dimension 251
- Drawing 251
- Approvals 252
- FCC App va 256
- Appendix 257
- Variables 258
- Example of RCoax 261
- Power Specifications 262
- Specifying Power in dBi 263
- Losses due to Coupling Loss 264
- UDistanceU UCoupling lossU 265
- Procedure 267
- Glossary 269
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