LightSpeed Technologies CAT 860 User Manual download pdf (Page 19)

36 37

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

<CMD>

Symbol

Hex

Value

<Param> Value Deﬁnition

IAVS 0xE1 Command Packet:

The controller sends no

<Param> character in the

command packet.

Increment the volume of

the selected audio input

by 2 dB. This overrides any

previous mute commands.

The remaining three

unselected audio/video

source inputs remain muted.

Response Packet:

If the command is properly

received, the CAT 860

responds by repeating back

the command packet to

the serial controller with an

added imbedded <Param>

character containing the

value loaded.

If the command is not

received properly, the CAT

860 responds by sending a

<NACK> character.

14. RS-232 SERIAL INTERFACE

COMMAND DEFINITION CONT’D

BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D

Audio Input Functions for the A/V Source Group Cont’d

2. INCREMENT AUDIO/VIDEO SOURCES COMMAND

<CMD>

Symbol

Hex

Value

<Param> Value Deﬁnition

AVS p 0xE0 Command Packet:

The controller sends only

one <Param> character in

the command packet. The

possible values are shown

below:

0x80 = Enable TV/VCR

0x81 = Enable CD/DVD

0x82 = Enable COMPUTER

0x83 = Enable AUX IN

0x84 = Enable All Inputs **

** Power up default used

to facilitate initial system

installation.

Select (enable) one of four

Audio/Video input sources

to receive audio. The

remaining three unselected

Audio/Video input ports

will be muted by sending

the -79dB setting their

corresponding volume

control hardware registers.

Note that muting inputs

does not change the values

in any of the volume-level

EEPROM variables.

Response Packet:

If the command is properly

received, the CAT 860

responds by repeating back

the command packet to the

serial controller.

If the command is not

received properly, the CAT

860 responds by sending a

<NACK> character.

Power up default initially

has all six audio inputs

enabled. The power up

default settings for all six

input volume-level EEPROM

variables is the setting for

-40dB.

14. RS-232 SERIAL INTERFACE

COMMAND DEFINITION

BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS

Audio Input Functions for the A/V Source Group

1. ENABLE AUDIO/VIDEO SOURCE COMMAND

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LightSpeed Technologies CAT 860 User Manual Page 19

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