5. Warranty, Safety

& Specifications

 

 

 

4. Troubleshooting

 

 

 

 

3. Optional

Accessories

 

 

2. Setup & Use

 

 

 

1. Overview

 

 

13.RS-232 SERIAL INTERFACE PROGRAMMING CONT’D

BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D

Audio Input Functions for the A/V Source Group Cont’d

12. QUERY ABSOLUTE VOLUME AUDIO/VIDEO SOURCE COMMAND

<CMD>

Hex

<Param> Value

Definition

Symbol

Value

 

 

 

 

 

 

QVAV?

0xEC

Command Packet:

This command causes the

 

 

The controller sends no

CAT 860 to return a query

 

 

response packet where the

 

 

<Param> character in the

 

 

added imbedded <Param>

 

 

command packet.

 

 

character contains the

 

 

 

 

 

 

absolute volume-level for

 

 

 

the audio/video sources

 

 

 

inputs.

 

 

 

Response Packet:

 

 

 

If the command is properly

 

 

 

received, the CAT 860

 

 

 

responds by repeating back

 

 

 

the command packet to the

 

 

 

serial controller with the

 

 

 

added <Param> character

 

 

 

containing the absolute

 

 

 

volume level for the audio/

 

 

 

video sources.

 

 

 

The possible values are

 

 

 

shown below:

 

 

 

0xCF = 0 dB

 

 

 

0xCE = -1dB

 

 

 

0xCD = -2dB

 

 

 

0xCC = -3dB

 

 

 

0xA7 = -40dB

 

 

 

If the command is not

 

 

 

received properly, the CAT

 

 

 

860 responds by sending a

 

 

 

<NACK> character.

 

 

 

 

14.RS-232 SERIAL INTERFACE COMMAND DEFINITION CONT’D

BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D

Audio Input Functions for the A/V Source Group Cont’d

13. QUERY ABSOLUTE VOLUME MICROPHONE AUDIO INPUT COMMAND

<CMD>

Hex

<Param> Value

Definition

Symbol

Value

 

 

 

 

 

 

QVMI?

0xED

Command Packet:

This command causes the

 

 

The controller sends no

CAT 860 to return a query

 

 

response packet where the

 

 

<Param> character in the

 

 

added <Param> character

 

 

command packet.

 

 

contains the absolute

 

 

 

 

 

 

volume-level for the

 

 

 

microphone audio inputs.

 

 

 

Response Packet:

 

 

 

If the command is properly

 

 

 

received, the CAT 860

 

 

 

responds by repeating back

 

 

 

the command packet to the

 

 

 

serial controller with the

 

 

 

added <Param> character

 

 

 

containing the absolute

 

 

 

volume level for the audio/

 

 

 

video sources.

 

 

 

The possible values are

 

 

 

shown below:

 

 

 

0xCF = 0 dB

 

 

 

0xCE = -1dB

 

 

 

0xCD = -2dB

 

 

 

0xCC = -3dB

 

 

 

0xA7 = -40dB

 

 

 

0x83 = -76dB

 

 

 

0x82 = -77dB

 

 

 

0x81 = -78B

 

 

 

0x80 = -79dB

 

 

 

If the command is not

 

 

 

received properly, the CAT

 

 

 

860 responds by sending a

 

 

 

<NACK> character.

 

 

 

 

5. Warranty, Safety

& Specifications

 

 

 

4. Troubleshooting

 

 

 

 

3. Optional

Accessories

 

 

 

2. Setup & Use

 

 

 

1. Overview

 

 

46

47

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LightSpeed Technologies CAT 860 user manual Query Absolute Volume AUDIO/VIDEO Source Command, Qvav?, Qvmi?

CAT 860 specifications

LightSpeed Technologies has made significant strides in the field of educational technology with its innovative product, the CAT 860. This advanced audio distribution system is designed to enhance learning environments by ensuring that every student can hear their teacher clearly, regardless of classroom size or layout. The CAT 860 is particularly valuable in diverse educational settings, from traditional classrooms to modern digital learning environments.

One of the standout features of the CAT 860 is its powerful amplification capabilities. The system is equipped with a robust amplifier that delivers crystal-clear sound, offering a more engaging experience for students. This clarity not only enhances comprehension but also reduces fatigue during prolonged listening sessions. The CAT 860 uses digital signal processing to eliminate background noise and offers a full-range audio experience without distortion, which is critical in maintaining student attention.

Another key characteristic of the CAT 860 is its flexibility in terms of connectivity. It supports various input sources, including microphones, audio devices, and streaming services. This versatility makes it easier for teachers to incorporate multimedia resources into their lessons, fostering a more dynamic and interactive learning process. Moreover, the system can connect wirelessly to other devices, allowing for seamless integration into existing educational technology infrastructure.

Additionally, the CAT 860 is user-friendly, featuring a simple interface that allows teachers to quickly adjust volume levels and select audio sources without needing extensive technical training. This ease of use encourages teachers to utilize the system more frequently, which in turn maximizes the benefits of enhanced audio in the classroom.

In terms of design, the CAT 860 is compact and aesthetically pleasing, making it a suitable addition to any classroom environment. Its modern design ensures that it blends seamlessly with other teaching aids and equipment, maintaining an organized and professional appearance.

Overall, the LightSpeed Technologies CAT 860 is a powerful and flexible audio distribution system that caters to the unique needs of modern classrooms. By improving sound quality and ease of use, it enhances the overall educational experience for both students and teachers alike, making it an essential tool in today's learning environments.