LightSpeed Technologies CAT 860 - Manual (Page 29)

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1. Overview
2. Setup & Use
3. Optional Accessories
4. T
roubleshooting
5. W
arranty
, Safety
& Specifications
1. Overview
2. Setup & Use
3. Optional Accessories
4. T
roubleshooting
5. W
arranty
, Safety
& Specifications
14. RS-232 SERIAL INTERFACE
COMMAND DEFINITION
CONT’D
<CMD>
Symbol
Hex
Value
<Param> Value Definition
AODI p 0xA2 Command Packet:
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
Response Packet:
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
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.
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
14. RS-232 SERIAL INTERFACE
COMMAND DEFINITION
CONT’D
<CMD>
Symbol
Hex
Value
<Param> Value Definition
AOCH p 0xA0 Command Packet:
The controller sends only
one <Param> character in
the command packet. The
possible values are shown
below:
0x80 = Reserved
0x81 = AUX OUT**
** Power up default
Response Packet:
The CAT 860 sends only
one <Param> character in
the response packet. The
possible values are shown
below:
0x81 = AUX OUTt
This command determines
which volume-level
EEPROM variable will
be affected by the AODI
(<0xA2>), AODD (<0xA3>),
and AOAV (<0xA4>)
commands.
If the command is properly
received, the CAT 860
responds by repeating back
the command packet where
the <Param> character
contains the selection
status.
If the command is not
received properly, the CAT
860 responds by sending a
<NACK> character.
Power up default is AUX
selected.
QUERY SELECTED AUDIO OUTPUT COMMAND
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.
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