PCxxxxN series power ampliﬁers, the ACU16-C Amp Control Unit, and the NHB32-C Network Hub and Bridge. It runs on standard Windows PCs and can be connected to an ACU16-C or NHB32-C by using either USB or RS-232C. Multiple ACU16-Cs and NHB32-Cs can be managed from a single PC running NetworkAmp Manager, which can be connected to any ACU16-C or NHB32-C on the CobraNet network.
64 channels in each direction or 128 channels total for both directions (64 channels total for both directions in a network that uses a repeater hub). (However, the number of channels is limited by conditions such as the performance of your equipment and on the type of audio signal.)
Using Multiple PCs Several PCs running NetworkAmp Manager can be connected to the CobraNet network, offering simultaneous control and monitoring from several locations within a venue. Up to 16 channels of real-time data (e.g., level meter information) can be transmitted across the network simultaneously.
Getting Started 2 Getting Started Installing NetworkAmp Manager System requirements and installation instructions for NetworkAmp Manager can be found in the printed ACU16-C/NHB32-C Owner’s Manual. Starting NetworkAmp Manager To start NetworkAmp Manager, double-click the NetworkAmp Manager icon. If a startup project has been speciﬁed on the General Setup dialog box (see opened.
The options available depends on what MIDI drivers you have installed on your PC. Choose the Yamaha CBX Driver (for use with serial ports) or Yamaha USB Driver (for use with USB ports). See the ACU16-C/NHB32-C Owner’s Manual for information on installing these drivers.
Getting Started Working with Projects NetworkAmp Manager setups are stored as projects. Project ﬁles have the ﬁle name extension “.apj”. • To create a new project, choose New from the File menu. • To open a previously saved project, choose Open from the File menu. •...
Main Window 3 Touring NetworkAmp Manager Main Window This is NetworkAmp Manager’s main window. The left pane displays the CobraNet net- work tree, consisting of ACU16-Cs, NHB32-Cs, and power amps. The right pane displays the various NHB and ACU pages. The name and unit ID of the device currently selected in the network tree are displayed at the top of the right pane.
Touring NetworkAmp Manager Menus File Open Save Save As Disconnect from Network Connect to Network Connect & send to network Exit 1. A check mark appears next to either of these commands, indicating the current status. If the con- nected ACU16-C/NHB32-C is turned off, the check mark appears next to the “DIsconnect from Net- work”...
Network Tree The network tree displays all the ACU16-Cs, NHB32-Cs, and power amps in the project in a tree-like structure. Items are dis- played in order of unit ID. The tree can be expanded and col- lapsed by clicking the plus and minus symbols. The following table lists the items that can appear in the network tree.
PC9500N/PC4800N/PC3300N power ampliﬁers can be added to projects. Please check the Yamaha Professional Audio Web site at the following URL for news and information on net- workable power ampliﬁers to be released in the future, and for information on other Yamaha professional audio products: http://www.yamahaproaudio.com/.
When you click an NHB icon, the NHB pages appear in the main window’s right pane. The following menu appears when you right-click an NHB icon. Delete: Deletes the NHB32-C from the project. A conﬁrmation message appears before the NHB32-C is deleted. Rename: Opens the Rename dialog box so you can rename the NHB.
NHB Pages 4 NHB Pages This chapter explains the NHB pages, which can be selected while an NHB32-C is selected in the network tree. Devices on a CobraNet network transmit and receive audio data by matching bundle num- bers. Matching the bundle number on the transmitting and receiving devices is analogous to making a physical cable connection between two devices.
intensify the restrictions on Ethernet’s packet delivery times, and therefore reduce the max- imum number of switches that can be used. For details, refer to the Peak Audio website (http://www.peakaudio.com). Note: If the latency is 1.33 ms, the number of bundles that can be handled by this single device on a CobraNet network will be limited to a total of four bundles for transmission and reception.
NHB Pages Patch Page This page is used to assign AES/EBU inputs and outputs to individual CobraNet channels and to store and recall assignment patches. Before making any assignments, you must spec- ify the bundles that contain the CobraNet channels you want to patch (see AES/EBU inputs and outputs are assigned to CobraNet channels on two 32 x 32 grids, one for inputs, one for outputs.
AES/EBU In to CobraNet: channels. CobraNet to AES/EBU Out: outputs. Store/Recall: These buttons are used to store and recall patches. A patch consists of all AES/EBU input and output to CobraNet channel assignments. There are 100 patch mem- ories. Patch #0 is a read-only memory containing initial assignments, with each AES/EBU input and output assigned to the correspondingly numbered CobraNet input and output.
ACU Pages 5 ACU Pages This chapter explains the ACU pages, which can be selected while an ACU16-C is selected in the network tree. Devices on a CobraNet network transmit and receive audio data by matching bundle num- bers. Matching the bundle number on the transmitting and receiving devices is analogous to making a physical cable connection between two devices.
Note: If two or more latencies exist within a CobraNet network, there is a danger that the devices may become unable to communicate correctly with each other. You must make the same latency setting for all devices in a single network. Note: If you are unable to change the latency, refer to Troubleshooting (see Patch Page This page is used to assign individual CobraNet channels to ACU16-C analog outputs.
ACU Pages Amp Pages The Amp pages are used to control and monitor power ampliﬁers. There are four Amp pages: Amp 00–07, Amp 08–15, Amp 16–23, and Amp 24–31. Each page can display the channels of up to eight power ampliﬁers. Power ampliﬁ- ers can have 2, 4, 6, or 8 channels.
Channel Detail Page The Channel Detail page offers a detailed view of each channel. It can be opened by clicking the Channel Detail tab while an ACU16-C is selected in the network tree, or by clicking a power ampliﬁer channel icon in the network tree. PROTECT indicator Channel select:...
ACU Pages Mode indicator: REO, PARALLEL, or BRIDGE. ATT fader: This fader attenuates the channel’s input signal. The numerical value below the fader is the current attenuation setting in dB. Attenuation can also be set by clicking the Up and Down arrow buttons, or by entering a value from the keyboard. Phase button: Reversed.
Threshold Page This page is used to specify the wattage, temperature, and the minimum and maximum load impedance thresholds at which you want NetworkAmp Manager to issue a warning. The thresholds can be set individually for each power ampliﬁer channel. Warnings are dis- played in the Log window and recorded in the log ﬁle.
Other Functions 6 Other Functions Logging Events NetworkAmp Manager compares the threshold values set on the ACU Threshold page (see page 24) with the amp’s operating status and issues a warning if a value is exceeded. Warn- ings are displayed in the Log window (see CSV format text ﬁles that can be opened by any text editor, word processor, or spreadsheet.
Logging Events There are ﬁve types of event: Warning, Online/Ofﬂine Status, Power Switch, Error, and Net- work Mode. These are explained below. 1 Warning Event This type of event occurs when a speciﬁed threshold is exceeded (see page 24). Date Time Type PTWSO (protect, over temp, over wattage, speaker terminal short, speaker terminal open)
Other Functions New ACU16-C detected [ACU#xx] ACU16-C gone offline [ACU#xx] New NHB32-C detected [NHB#xx] NHB32-C gone offline [NHB#xx] Online/Ofﬂine Status events appear in blue in the Log window. 3 Power Switch Event This type of event occurs when an ampliﬁer is set to On or Standby. Date, Time, LineKind, Device For example: 01/Aug/2002, 21:30:25, PowerOn, [ACU#00 AMP#00]...
Logging Events AES/EBU Input Sync Error [NHB#xx AES/EBUx CH7/8] Word Clock Unlocked [NHB#xx] Word Clock Unlocked [ACU#xx] Unexpected data change detected [NHB#xx...] Unexpected data change detected [ACU#xx...] Error events appear highlighted in red in the Log window, as shown below. 5 Network Mode This type of event occurs when COM or MIDI is activated or deactivated.
Other Functions Log Window The Log window opens automatically, if it’s not already, when an event occurs. This window can also be opened by choosing Log Window from the Window menu. Each time an event occurs, the details are displayed in the window, which scrolls automati- cally.
Locking NetworkAmp Manager You can lock NetworkAmp Manager to prevent unauthorized operation. Locking NetworkAmp Manager Choose Operation Lock from the Option menu. The Operation Lock dialog box shown below appears. Enter a password in the Password and Conﬁrm ﬁelds. Click Lock. NetworkAmp Manager is locked and the Operation Unlock dialog box appears, as shown below.
Other Functions Using COM & MIDI Modes CobraNet’s Serial Bridge feature allows serial data to be transmitted over the network. Nor- mally, the ACU16-C and NHB32-C use the Serial Bridge to transmit amp control data. However, it can be used to transmit MIDI data (Program Change and Control Change) or AD824 head amp control data between any two NHB32-Cs on the network.
Group View Group View With Group View you can view and control groups of channels from any ampliﬁers on the network. There are eight group pages and up to 16 channels can be displayed on each. To open the Group View page, choose Group View from the View menu. The eight groups are selected by clicking the tabs along the top of the page.
Other Functions Editing Groups Up to 16 channels can be added to each Group View page. Choose Group View from the View menu. The Group View page appears. Right-click on the page and select Edit Group View from the pop-up menu. The Group View Setup dialog box appears, as shown below.
Select a channel in the CH list and click the Add [>] button. The channel is added to the group. To add all channels, click the Add All [>>] button. To remove a channel from the group, select it and then click the Remove [<] button.
Other Functions Control Link With Control Link you can group power ampliﬁers for simultaneous control of power Standby and On. Up to 16 Control Link groups are available. To open the Control Link page, choose Control Link from the View menu. The STANDBY and ON buttons are unavailable when no power ampliﬁers are in a group or when the group is disabled.
Editing Groups Choose Control Link from the View menu. The Control Link page appears. Right-click on the page and select Edit Control Link from the pop-up menu. The Control Link Setup dialog box appears, as shown below. Select a group in the Groups list. To enable the group, click its check box.
Other Functions When you’ve ﬁnished, click the OK button to apply your edits and close the Control Link Setup dialog box. If you click the Apply button, your edits are applied and the dialog box remains open. Click Cancel to leave the settings unchanged and close the dialog box. NetworkAmp Manager—Owner’s Manual...
If you want to change the latency to other than 5.33 ms, you will need to update the CobraNet mod- ule. For details on upgrading, please contact your Yamaha dealer. Creates a new project Opens an existing project...
Glossary Glossary This glossary contains terms relevant to NetworkAmp Manager, the ACU16-C, and NHB32-C. A wealth of information about CobraNet, with sections especially for designers and installers, is available on the Peak Audio Web site at http://www.peakaudio.com. If you are designing a network, we strongly recommend that you visit this Web site and study the information available in order to take full advantage of the CobraNet technology.
An Ethernet cable whose data transmit and receive conduc- tors have been swapped. Crossover cables are used to connect two Ethernet devices directly to each other. They should never be used to connect devices to a hub. Contrast with Straight Ethernet cable.
The structure of a network. Common network topologies include The devices on a CobraNet network that are wordclock slaves. Performers A basic network hub that retransmits all incoming data to all of its output The type of connector used to connect 10Base-T, 100Base-T, and CobraNet supports a single sampling rate of 48 kHz.
Glossary Unicast bundle: CobraNet bundles 256~65,279 are unicast bundles. (However since the ACU16-C/NHB32-C support only bundle numbers 0~16,383, they can only use unicast bundles 256~16,383.) In other words, these are transmitted only if the two devices are set to transmit and receive that speciﬁc bundle. Unicast bundles only allow point-to-point con- nections and as such are far more bandwidth efﬁcient than multicast bundles.