The last byte (ä) consists of only one value.

ä= 0x84 = 132 → 132 - 132 = 0 = Idle

So, we know that the AEC on input 1 is in idle mode.

In the above description, the data in the BLDATA command consists of 13 bytes (4 input levels + 5 output levels + 1 AEC reference level + 1 room gain level + 1 AGC gain level + 1 AEC state). It is possible to tell the EF2211 to only send a subset of this information. There are two reasons you might want to do this. First, it makes parsing the data easier since you can ask for only the data that you are interested in. Second, when you decrease the amount of data being sent, the EF2211 can send the messages faster. This means that if you are trying to implement a signal level meter, you can get faster refresh rates by asking the EF2211 to only send the data you're interested in.

Suppose you were only interested in signal levels on inputs A-B. You could send the following command.

S01BLINFO0110000000000

In the above BLINFO command, there are 1's in the positions of the data that we want and 0's in the

positions of the data that we don't want. Now, when we send a BLDATA? command or enable BLAUTO, the Vortex sends messages of the form:

S01BLDATAii

Where the ii bytes are the signal levels for inputs A-B.

8.33.BLINFO -- Select Information to be Reported in

BLDATA

This command controls which bytes are sent in the BLDATA command. See the description of the BLDATA command for more information on the BLINFO command.

This command is saved to non-volatile memory only as part of a preset. The state of this command will be restored after power-up only if a preset is saved and that preset is set to be the power-on preset.

8.34.BROAD2 -- Broadcast Arbitrary Command Strings to RS-232 Port

This command is used to broadcast arbitrary commands to the RS-232 port for controlling other devices (not necessarily other Vortex devices). For example, ' ' ' S01BROAD2:ATDT4048921180' ' '

would cause the Vortex to send out 'ATDT4048921180' via its RS-232 port. If a modem was connected to the RS-232 port, this command would cause the modem to dial the Polycom Installed

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Polycom RS-232 manual Blinfo -- Select Information to be Reported, Where the ii bytes are the signal levels for inputs A-B
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RS-232 specifications

Polycom RS-232 is a key interface utilized in various communication and audiovisual systems, enabling effective integration between different devices. This technology employs a standard serial communication protocol that allows for robust control and communication, particularly in environments that require sophisticated audiovisual setups.

One of the main features of Polycom RS-232 is its ability to facilitate point-to-point communication over distances of up to 50 feet without the need for a repeater. This long-range connectivity is essential in large conference rooms and auditoriums where devices are often spread out over considerable distances. The serial connection is often more reliable than wireless options, which can be susceptible to interference.

Another notable characteristic is its versatile compatibility with a range of devices, including cameras, projectors, and interface panels. This allows users to control multiple devices from a single point, streamlining the operation of complex setups. The straightforward nature of RS-232 commands simplifies integration, which is a significant benefit for both installers and end-users.

Polycom RS-232 also supports various baud rates, giving users the flexibility to optimize communication speed based on their requirements. This adaptability ensures that users can achieve the desired performance, whether they are managing basic functions like power and volume control or more complex commands for switching video sources or adjusting settings.

The technology also features error-checking capabilities, which contribute to its reliability in communication. This reduces the likelihood of issues during operations, ensuring that commands are correctly received and executed. Additionally, its structured protocol aids in diagnosing and troubleshooting, making it easier to manage any issues that arise.

With its robust nature and proven reliability, Polycom RS-232 remains a pivotal technology in the realm of audiovisual communications. Its combination of long-range capabilities, compatibility, flexibility, and reliability makes it an essential tool for enhancing the efficiency of modern communication environments. As technology continues to evolve, the importance of dependable interfaces like Polycom RS-232 cannot be overstated, ensuring seamless integration and operation of sophisticated communication systems. Whether used in educational institutions, corporate environments, or event venues, Polycom RS-232 guarantees a streamlined experience in device management and control.
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