LightSpeed Technologies CAT 860 User Manual download pdf (Page 24)

46 47

1. Overview 2. Setup & Use

3. Optional

Accessories

4. Troubleshooting

5. Warranty, Safety

& Speciﬁcations

1. Overview 2. Setup & Use

3. Optional

Accessories

4. Troubleshooting

5. Warranty, Safety

& Speciﬁcations

14. RS-232 SERIAL INTERFACE

COMMAND DEFINITION CONT’D

<CMD>

Symbol

Hex

Value

<Param> Value Deﬁnition

QVMI? 0xED Command Packet:

The controller sends no

<Param> character in the

command packet.

This command causes the

CAT 860 to return a query

response packet where the

added <Param> character

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.

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

13. RS-232 SERIAL INTERFACE

PROGRAMMING CONT’D

<CMD>

Symbol

Hex

Value

<Param> Value Deﬁnition

QVAV? 0xEC Command Packet:

The controller sends no

<Param> character in the

command packet.

This command causes the

CAT 860 to return a query

response packet where the

added imbedded <Param>

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.

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

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LightSpeed Technologies CAT 860 User Manual Page 24

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