Parlé SBC 2 overview

Auto on/off mode

When the switch is placed in any of the Auto on/off mode's three EQ positions, the conferencing bar activates its automated Wake-on-signal function. This sets the bar to automatically power on and off in response to sensed signals on its ports. Setting the switch in Auto on/off mode activates the Wake-on-signal even if it was previously disabled by a command in RS-232 mode.

In Auto, on/off mode, the RS-232 control port is still active. However, the SBC 2 bar will not respond to incoming commands or queries except to signal the connected control system that the conferencing bar is set to Auto on/off.

RS-232 mode

In RS-232 mode, the active RS-232 port is used to control the bar with commands, and status can be requested through queries.

The Wake-on-signal function is disabled by default in RS-232 mode. However, the function can be activated by RS-232 command if both Wake-on-signal and RS-232 control are needed for the application.

 When changing the mode switch from “Auto on/off” to “RS232” the Sound Bar will automatically apply the following settings:

• Power = ON
• Mute = OFF
• Volume = 70 (If max volume is set lower than 70, then that will not be exceeded)
• Input = 1 (RCA Unbalanced) 
• Wake on signal = OFF
• EQ setting = Video Conference.

Note: RS-232 control is deactivated when the bar is set to Auto on/off mode.

Analog signals: Balanced and RCA

When powered on via the activating analog input sources (Balanced or RCA), the bar remains in the on state while a signal is present. When the signal is removed, the bar stays on for 20 minutes before automatically powering off. After powering off, the Wake-on-signal function re-activates, sensing for an active signal.

Digital signals: HDMI-ARC and USB Audio

When connecting using the HDMI or USB ports, the bar uses the first digital signal detected to designate its active source. The bar will look for another active source when the first signal is lost. In the absence of a signal, the bar will stay on for 20 minutes before powering off.

In the adjacent example illustration, the connected TV is turned on first, making the HDMI-ARC port the active source for the bar. The user then decides to change the source to USB Audio and looks for the sound bar as a source on his Laptop audio output. However, the bar will not show up as a source on the laptop until the TV is switched off, causing the USB source to register as the new active source.

Likewise, if the USB source was activated first, the TV will not detect the Sound Bar on HDMI-ARC until the USB is disconnected from the Laptop.

When connecting the SBC 2 to a PC, the enumerated audio output shows as "Parlé SBC 2".

Note: The USB is version 2.0, The USB cable length should not exceed 5 meters (15 feet).

Balanced Audio

The connector marked “BALANCED” is a line level audio input that can be used in balanced or unbalanced modes. Connect the audio source using the supplied terminal block.

To connect the input to a balanced source, connect a ground to the shield of both cables. 

To connect a single ended/unbalanced source to the balanced Euroblock; 

• Connect the ground to the cable shield
• L+ to left signal output, R+ to right signal output
• Connect L-and R- to ground with a small piece of wire

Format

The RS-232 protocol consists of commands and queries. Both actions are two-way data exchanges. The bar responds with an acknowledgment to a command and a value to a query.

Protocol considerations

• All RS-232 communications are case sensitive.
• Multiple commands can be sent without a time delay between commands by delimiting each command with the command ending \CR.
• Settings adjusted using RS-232 commands are automatically saved in the bar. The saved settings are then used as default values the next time the bar is powered on.

Global functions

All the functions allowed to adjust the basic functions of the Sound Bar are available in the global functions. All commands start with: “NEUNIT=1,” followed by the command in <A>, the value after the equal sign must be replaced with the value in <X> or a question mark, all commands must end with a \CR.

Example of use:

• NEUNIT=1,POWER=ON\CR                    Turn on the Sound Bar.
• NEUNIT=1,POWER=OFF\CR                  Turn off the Sound Bar.
• NEUNIT=1,POWER=?\CR                       Query the power status.
• NEUNIT=1,INPUT=1\CR                           Sets the audio input to input 1 (UNBALANCED).
• NEUNIT=1,INPUT=2\CR                          Sets the audio input to input 2 (BALANCED).
• NEUNIT=1,INPUT=3\CR                          Sets the audio input to input 3 (HDMI ARC).
• NEUNIT=1,INPUT=?\CR                          Query the selected audio input.
• NEUNIT=1,VOL=INC\CR                          Increments the master volume one step.
• NEUNIT=1,VOL=DEC\CR                        Decrements the master volume one step.
• NEUNIT=1,VOL=DEC\CR                        Decrements the master volume one step.
• NEUNIT=1,VOL=23\CR                           Sets the master volume to 23.
• NEUNIT=1,VOL=?\CR                             Query the current master volume level.
• NEUNIT=1,MAXVOL=50\CR                  Sets the maximum volume to 50.
• NEUNIT=1,MAXVOL=?\CR                     Query the current maximum volume level.
• NEUNIT=1,MUTE=ON\CR                       Mute audio output.
• NEUNIT=1,MUTE=OFF\CR                     Unmute audio output.
• NEUNIT=1,MUTE=?\CR                          Query the audio output mute state.