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 A/V Source Group Cont’d

5. SELECT AUDIO OUTPUT COMMAND

<CMD>	Hex	<Param> Value	Definition
Symbol	Value
AOCH p	0xA0	Command Packet:	This command determines
		The controller sends only	which volume-level

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

6.DIFFERENTIALLY INCREASE VOLUME FOR SELECTED AUDIO OUTPUT COMMAND

<CMD>	Hex	<Param> Value	Definition
Symbol	Value
AODI p	0xA2	Command Packet:	Response Packet:

5. Warranty, Safety & Specifications

4. Troubleshooting

3. Optional Accessories

2. Setup & Use

Overview

one <Param> character in	EEPROM variable will
	be affected by the AODI
the command packet. The
	(<0xA2>), AODD (<0xA3>),
possible values are shown	and AOAV (<0xA4>)
below:	commands.
0x80 = Reserved	If the command is properly
0x81 = AUX OUT**	received, the CAT 860
	responds by repeating back
** Power up default	the command packet where
	the <Param> character
Response Packet:
	contains the selection
The CAT 860 sends only	status.
one <Param> character in	If the command is not
the response packet. The	received properly, the CAT
possible values are shown	860 responds by sending a
below:	<NACK> character.
0x81 = AUX OUTt	Power up default is AUX
	selected.

QUERY SELECTED AUDIO OUTPUT COMMAND

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:

0x81 = AUX OUT

<Param> #2:

0xCF = 0 dB

0xCE = -1dB

0xCD = -2dB

0xCC = -3dB

0xA7 = -40dB

0x83 = -76dB

0x82 = -77dB

3. Optional Accessories

2. Setup & Use

Overview

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AOCH? 0xA1 Command Packet:

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

Response Packet:

The CAT 860 sends only one <Param> character in the response packet. The possible values are shown below:

0x81 = AUX OUT

This command causes the CAT 860 to return a query response packet where the <Param> contains the selection status set by AOCH (<0xA0>).

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

0x81 = -78B

0x80 = -79dB

Definition: This command modifies the volume-level EEPROM variable which was selected by the AOCH (<0xA0>) 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 AOCH (<0xA0>) 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 outputs, the power up default values for all volume-level EEPROM variables is set for 0dB.

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