Increase incoming gain on all line S01GAINGIL>3 inputs by 3 dB.

S01GAINGIL? Query gains on all line inputs.

S01GAINIAa

S01GAINIBb ,

where a and b are the new values of each of the line inputs. If this command was issued after the example above, then the status messages would be:

S01GAINIA10

S01GAINIB10 .

S01GAINIAa

S01GAINIBb ,

where a and b are the new values of each of the line inputs. If this command was issued after the example above, then the status messages would be:

S01GAINIA10

S01GAINIB10 .

8.58. GAINI -- Set Input Gain

The input channels of the Vortex pass through an analog gain stage before reaching the analog to digital converter. The gain of this stage is adjustable via a digitally controlled analog trim pot. It is important that this gain is set correctly in order to maximize the resolution and quality of the signal at the analog to digital converter. This command lets you adjust the gain of these input gain stages. For volume control, the FADERI command can be used to adjust the signal level in the digital domain

without affecting the calibration.

This command also adjusts the gain of the input signal coming from the telephone interface.

The following table shows the relationship between the input gain settings (via GAINI and MIC) and the nominal level expected at each of the inputs.

Input Channel

MIC Setting

GAINI Setting (dB)

Expected level at Input (dBu)

1

1 (mic level)

0 to 30

0 to -30

1

0 (line level)

0 to 30

33 to 3

A-B

N/A (line level)

0 to 20

0 to -20

The GAINIT command has a range of -100 to +20.

This command is a channel integer command. See Section 6.3 and Section 6.2 for more information

on this type of command. The minimum and maximum values for this command are 0 and 20 or 30, respectively.

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.

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Polycom RS-232 manual Gaini -- Set Input Gain, Input Channel MIC Setting Gaini Setting dB
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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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