LightSpeed Technologies CAT 860 user manual Cmd

5. Warranty, Safety & Specifications

4. Troubleshooting

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

ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D

Audio Input Functions for the Infrared Source Group Cont’d

4. SET ABSOLUTE VOLUME FOR SELECTED INFRARED INPUT COMMAND

<CMD>	Hex	<Param> Value	Definition
Symbol	Value
IIAV p	0xB4	Command Packet:	Response Packet:

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

ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D

Audio Input Functions for the Infrared Source Group Cont’d

5.QUERY ABSOLUTE VOLUME FOR SELECTED INFRARED INPUT COMMAND

<CMD>	Hex	<Param> Value	Definition
Symbol	Value
IIAV?	0xB5	Command Packet:	Response Packet:

5. Warranty, Safety & Specifications

4. Troubleshooting

3. Optional Accessories

2. Setup & Use

1. Overview

The controller sends only one <Param> character in the command packet. 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

** Power up default

The CAT 860 sends two <Param> characters in the response packet. The possible values are shown below:

<Param> #1:

0x80 = IR Channel A

0x81 = IR Channel B

<Param> #2:

0xCF = 0 dB 0xCE = -1dB 0xCD = -2dB 0xCC = -3dB 0xA7 = -40dB 0x83 = -76dB 0x82 = -77dB 0x81 = -78B 0x80 = -79dB

The controller sends no <Param> character in the command packet.

The CAT 860 sends two <Param> characters in the response packet. The possible values are shown below:

<Param> #1:

0x80 = IR Channel A

0x81 = IR Channel B

<Param> #2:

0xCF = 0 dB 0xCE = -1dB 0xCD = -2dB 0xCC = -3dB 0xA7 = -40dB 0x83 = -76dB 0x82 = -77dB 0x81 = -78B 0x80 = -79dB

3. Optional Accessories

2. Setup & Use

1. Overview

Definition: This command modifies the volume-level EEPROM variable which was selected by the IICH (<0xB0>) command. The EEPROM variable is set the value indicated in the <param> character.

Afterwards, the value in the EEPROM variable is unconditionally loaded into the corresponding volume control hardware register. This overrides any prior mute operation.

If the command is properly received, the CAT 860 responds by repeating back the command packet where the first of two replacement <Param> characters contains the selection status set by IICH (<0xB0>) and the second contains the resultant value stored in the volume-level EEPROM variable which was modified by this command. If the command is not received properly, the CAT 860 responds by sending a <NACK> character.

For the audio inputs, the power up default values for all six input volume-level EEPROM variables is set for -40dB.

Definition: This command causes the CAT 860 to return a query response packet where the first of two <Param> characters contains the selection status set by IICH (<0xB0>) and the second contains the value stored in the volume-level EEPROM variable selected by the IICH (<0xB0>) command.

If the command is not received properly, the CAT 860 responds by sending a <NACK> character.

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