6.1. Boolean Commands

Boolean commands take one of the three following arguments.

●'0' indicates that the parameter should be turned off.

●'1' indicates that the parameter should be turned on.

●'2' indicates that the parameter should be toggled (i.e., '0' becomes '1' and '1' becomes '0').

Parameters associated with boolean commands can be queried using the '?' character. For example, if input A is muted, and you send ' S04MUTEIA? ', the EF2211 will respond with a status message of ' S04MUTEIA1 '. When a status message is generated for a boolean command, the command data will either be a '0' or '1', since '2' is obviously not a valid state.

6.2. Integer Commands

Integer commands can take one of two types of arguments. The first argument type is absolute, meaning that the parameter will be set to the specified number. For example, ' S04GAINIA10 ' means that the gain on input A will be set to 10 dB. In this case, the device will respond with a status message of ' S04GAINIA10 '.

The second argument type is relative, meaning that the parameter will be incremented or decremented by the specified amount. The increment character is '>' and the decrement character is '<'. For example, ' S04GAINIA>3 ' increments the gain on input A by 3 dB. If the input's gain was previously set to 6 dB, then it would now be set to 9 dB. In this case the device would respond with a status message of ' S04GAINIA9 '.

The numeric part of both the absolute and relative arguments can contain a '+' or '-' to indicate the algebraic sign of the argument. If no sign is given, '+' is assumed.

The parameters associated with integer commands have maximum and minimum values associated with them. If you try to set a parameter above its maximum or below its minimum, the parameter will be set to its maximum or minimum value, respectively.

Parameters associated with integer commands can be queried using the '?' character. For example, if input A 's gain is set to 12, and you send ' S04GAINIA? ', the device will respond with a status message of ' S04GAINIA12 '.

6.3. Channel Commands

A command can be a channel command in addition to being one of the other types of commands (integer or boolean). A channel command means that the command applies to a specific input or output channel. The channel is specified by a single character (e.g., '1', 'A', 'B', etc.) occurring before any other payload data.

An example of a boolean channel command is the 'AGC' (Automatic Gain Control) command. ' S04AGC10 ' disables the AEC on input channel 1 . After sending this command, the device will

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Polycom RS-232 manual Boolean Commands, Integer Commands, Channel Commands
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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.

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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.

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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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