Query enabled status of automatic

S01BLAUTOx , where x is 0 or 1

depending on the current setting of

S01BLAUTO? BLDATA messages.

 

BLAUTO.

8.32. BLDATA -- Request Level Information

This command is used to request "blinking light" data from the EF2211. Blinking light data consists of signal levels for the 5 inputs (1, A, B, T), 4 outputs (1, A, B, T, L), and AEC reference (R1) as well as the room gain level for input 1, AGC gain level for input 1, and AEC state information for input 1.

The blinking light data can be received in two ways. The first way is by polling the Vortex by sending a BLDATA? command. The second way is to have the Vortex automatically send BLDATA responses via the BLAUTO command.

The most general format of the BLDATA responses generated by the Vortex is as follows.

S01BLDATAiiiiooooorgas

Each of the i, o, r, g, a and s characters above represents a single byte of data as shown in the table below.

BLDATA Bytes

Meaning

iiii

input levels 1, A, B, T

ooooo

output levels 1, A, B, T, L

r

AEC reference level R1

g

room gain 1

a

AGC gain 1

s

AEC state 1

Each of the i bytes correspond to signal levels on the 4 inputs in the following order (from left to right): 1, A, B, T. The o bytes correspond to signal levels on the 5 outputs in the following order (from left to right): 1, A, B, T, L. The r byte indicates the signal level for AEC reference R1. The the g byte indicates the room gain for input 1. The a byte indicates the AGC gain on input 1. The s byte indicates the AEC state for input 1.

The formats of the i, o, r, g, and a bytes are the same as for the binary gain commands (binary values offset by 132). See Section 6.3 and Section 6.4 for more information on the binary format.

The range for the i and o bytes is -100 dB to +20 dB, which corresponds to byte values of 32 to 152. For reference, the LEDs on the front panel signal meter correspond to teh following dB levels (left to right): -20, -12, -7, -3, 0, 3, 9, 20.

The format of the s bytes are also the same as the binary gain commands. The bytes are integers (offset by 132) that represent the current AEC state. The following table shows how the byte values

Page 40 Page 42
Page 41
Image 41
Polycom RS-232 manual Bldata -- Request Level Information, Meaning
Page 40 Page 42

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.
Top Page Image Contents