LightSpeed Technologies CAT 860 user manual Audio Input Functions for the A/V Source Group

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 A/V Source Group

1.DIFFERENTIALLY INCREASE VOLUME FOR SELECTED AUDIO INPUT COMMAND

<CMD>	Hex	<Param> Value	Definition
Symbol	Value
AIDI p	0x92	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 A/V Source Group Cont’d

2.DIFFERENTIALLY DECREASE VOLUME FOR SELECTED AUDIO INPUT COMMAND

<CMD>	Hex	<Param> Value	Definition
Symbol	Value
AIDD p	0x93	Command Packet:	Response Packet:

5. Warranty, Safety & Specifications

4. Troubleshooting

3. Optional Accessories

2. Setup & Use

1. Overview

The controller sends only		The CAT 860 sends two
		<Param> characters in the
one <Param> character in
		response packet. Possible
the command packet. The
		values are shown below:
possible values are shown
		<Param> #1:
below:
0x81	= one 1dB step	0x80	= TV/VCR
		0x81	= CD/DVD
0x82	= two 1dB steps	0x82	= COMPUTER
0x83	= three 1dB steps	0x83	= AUX IN
		0x84	= IR Channel A
0x84	= four 1dB steps
		0x85	= IR Channel B
0x85	= five 1dB steps	0x86	= AUX OUT
0x86	= six 1dB step	<Param> #2:
		0xCF = 0 dB
0x87	= seven 1dB steps
		0xCE = -1dB
0x88	= eight 1dB steps	0xCD = -2dB
		0xCC = -3dB
0x89	= nine 1dB steps
		0xA7 = -40dB
0x8A = ten 1dB steps		0x83	= -76dB
		0x82	= -77dB
		0x81	= -78B
		0x80	= -79dB

The controller sends only one <Param> character in the command packet. The possible values are shown below:

0x81 = one 1dB step

0x82 = two 1dB steps

0x83 = three 1dB steps

0x84 = four 1dB steps

0x85 = five 1dB steps

0x86 = six 1dB step

0x87 = seven 1dB steps

0x88 = eight 1dB steps

0x89 = nine 1dB steps

0x8A = ten 1dB steps

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

<Param> #1:

0x80 = TV/VCR

0x81 = CD/DVD

0x82 = COMPUTER

0x83 = AUX IN

0x84 = IR Channel A

0x85 = IR Channel B

0x86 = AUX OUT

<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

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Definition: This command modifies the volume-level EEPROM variable which was selected by the AICH (<0x90>) command. The EEPROM variable is incremented by the amount 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 AICH (<0x90>) 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 modifies the volume-level EEPROM variable which was selected by the AICH (<0x90>) command. The EEPROM variable is decremented by the amount 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 AICH (<0x90>) 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.

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