Biamp A4 User Manual Page 179
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System Control
The Remote Control Bus Hub provides eight parallel ports for the connection of remote control
devices to an Nexia® system. Each port can accept multiple remote controls connected in a 5-
wire daisy-chain. A single Hub, connected to a single Nexia unit, allows multiple branches to be
added to the remote control network. Also, maximum cable length is calculated only across the
two longest network branches, thereby effectively extending the network range. The Remote
Control Bus Hub can be used with any combination of control devices, including Volume 8
, Select
8, Volume/Select 8, Logic Box, and Voltage Control Box.
Example Control Network
Third-Party Control
After initial programming & configuration, NEXIA systems may be controlled by RS-232
communication from third-party control systems such as AMX® or Crestron®, using the Serial
Control Port. See RS-232 and Telnet Protocol
.
RS-232 and Telnet Protocol
Overview
Nexia can be controlled via the control dialogs in the Nexia software, or via third-party controllers
using RS-232
or Telnet.
For control of Nexia, Biamp created NTP (Nexia Text Protocol). This simply means that Nexia will
accept strings of ASCII characters to control and read settings of gain, mute, logic state,
frequency, audio levels, and other parameters of DSP Blocks in Nexia products.
NTP strings can be sent via third-party controllers using RS-232 (see RS-232 Control) or Telnet
via TCP/IP (see Telnet Control
). A line feed needs to be sent after each command string sent.
The NTP string is structured in the following order:
Command DeviceNumber Attribute InstanceID Index1 Index2 Value <LF>
165
- Table Of Contents 2
- Introduction 15
- Auto Mixer Combiner 15
- Audio Wiring Diagrams 16
- Level Control 28
- Logic Control 28
- Features 34
- Warranty 37
- Documentation 38
- Software Tools 39
- Bird's Eye View 41
- Processing Library 41
- Object Toolbar 42
- Format Toolbar 43
- Text Color 45
- Fore Color 45
- Hilite Color 45
- Pen Width 45
- Hatch Style 45
- Layout Toolbar 46
- Line Property Sheet 47
- Object Property Sheet 48
- Object Inspector 49
- Layers Sheet 49
- Toggle Grid 50
- Toggle Ruler 50
- Zoom In 50
- Zoom Out 50
- Zoom 1:1 51
- Zoom Level 51
- Pack Objects 51
- Align Edges 51
- Center In View 52
- Make Same Size 52
- To Front Or Back 52
- Network Toolbar 53
- Disconnect From System 54
- Send Configuration 54
- Sync Data 54
- Start Audio 54
- Stop Audio 55
- Device Maintenance 55
- Nexia-Manual-A4 56
- Standard Toolbar 59
- Main Menus 61
- system design file (.NEX) 62
- Copy DSP Data 65
- Paste DSP Data 65
- Duplicate 65
- Select All 65
- Presets Menu 67
- Create/Edit/Recall 67
- Custom Blocks Menu 69
- Create Custom Block Document 70
- Merge Into Custom Block 70
- Split Into Component Blocks 71
- Tools Menu 72
- Passwords 72
- Equipment Table 73
- Layout Compile Results 74
- Signal Path Identifier 75
- Options 75
- General Options 75
- Display Options 76
- Compile Options 77
- Network Options 79
- Layout Menu 81
- Align Objects 82
- Object Sheet 82
- Grid Settings 83
- Window Menu 83
- Help Menu 83
- Status Bar 84
- Keyboard Shortcuts 84
- Component Objects 87
- CS Input 10 Channel 89
- CS Output 6 Channel 89
- CS Default Configuration 90
- Conference System 90
- PM Hardware 90
- PM Input 4 Channel 92
- PM Input (Stereo) 12 Channel 93
- PM Output (Stereo) 6 Channel 94
- PM Default Configuration 95
- Presentation Mixer 95
- SP Hardware 96
- SP Input 4 Channel 98
- SP Output 8 Channel 98
- SP Default Configuration 99
- Speaker Processor 99
- VC Hardware 99
- Control Dialogs 102
- VC - AEC Input 8 Channel 102
- VC - AEC Ref 8 Channel 103
- VC - Pre-AEC 8 Channel 104
- VC - Input 2 Channel 105
- VC - Output 4 Channel 105
- VC - Codec In 1 Channel 106
- VC - Codec Out 1 Channel 106
- Videoconference System 107
- VC Default Configuration 107
- TC Hardware 108
- TC - AEC Input 8 Channel 110
- TC - AEC Ref 8 Channel 111
- TC - Pre-AEC 8 Channel 112
- TC - Input 2 Channel 113
- TC - Output 4 Channel 114
- Telephone Interface 114
- TC Default Configuration 118
- Teleconference System 118
- NexLink 119
- Auto Mixers 120
- Standard Mixers 122
- Matrix Mixers 122
- Room Combiners 122
- Equalizers 124
- Graphic Equalizer 125
- Filters 126
- High Pass Filter 127
- Low Pass Filter 128
- High Shelf Filter 128
- Low Shelf Filter 129
- All-Pass Filter 129
- Crossovers 130
- 3-Way Crossover 131
- Dynamics 132
- Leveler 133
- Comp/Limiter 133
- Ducker 134
- Noise Gate 134
- Ambient Noise Compensator 135
- ANC Setup Procedure 135
- Routers 137
- Controls 138
- Level Inc/Dec 141
- Mute Button 142
- Preset Button 142
- Remote Preset Button 142
- Logic Gates 142
- Logic Delay 144
- Command String 145
- Volume 8 146
- Select 8 147
- Volume/Select 8 148
- Voltage Control Box 149
- VCB Calibration 150
- Logic Box 151
- Control Labels 153
- Signal Present Meter 154
- Peak Meter 155
- RMS Meter 155
- Logic Meter 155
- Generators 156
- Diagnostics 157
- Specialty 158
- Split Pass-Through Input 159
- Split Pass-Through Output 159
- System Design 161
- Component Object Properties 162
- Object and Layout Text 164
- Compile Error Messages 165
- System Hardware Connections 172
- Proper Gain Structure 174
- Applications 175
- System Control 176
- Remote Control Bus Hub 178
- RS-232 and Telnet Protocol 179
- RS-232 Control 181
- Telnet Control 181
- Command 182
- Device Number 184
- Input/Output Blocks 186
- Mixer Blocks 192
- Equalizer Blocks 195
- Filter Blocks 196
- Crossover Blocks 198
- Dynamics Blocks 199
- Router Blocks 200
- Delay Blocks 201
- Control Blocks 202
- Meter Blocks 203
- Generator Blocks 203
- Instance ID 203
- Responses 206
- Control Dialog - Overview 207
- HyperTerminal 209
- Get/Set IP Address 211
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