General Device Commands; Equalizer Commands - AKG CEQ1/1 Manual

General Device Commands

Acknowledge - Causes the CEQ1/1 to send its "name" string back. The first data byte is the length of the name
string, and the rest of the data bytes are the device name.
Host sends command - 1
Host receives data bytes: Byte 1 is the length of the name string (3 for the EQ1 and EQ2), bytes 2, 3, and 4
are the ASCII values for "EQ1" (69,81,49).
Change Device Address - Changes the CEQ1/1 device address and stores the new address in EEPROM.
Host sends command - 2
Host sends 1 byte: device address, valid range 128 to 254.
Output Firmware Version - Causes the CEQ1/1 to outputs the version number of the current firmware. For example,
Version 1.0 software would be returned as 10 (decimal).
Host sends command - 25
Host receives data byte: firmware version.
Output Local/Remote Status - Outputs the current status of the CEQ1/1, Local or Remote. 0 indicates Local mode, 1
indicates Remote.
Host sends command - 21
Host receives 1 byte: EQ1 Mode
Set Local/Remote Mode - Allows the Local/Remote status of the CEQ1/1 to be set. 0 is Local mode, 1 is Remote.
New value is stored in EEPROM.
Host sends command - 22
Host sends 1 byte: 0 or 1, Local or Remote
Host receives 1 byte: 100 to indicate successful completion.

Equalizer Commands

Output EQ Band Level - Outputs band levels, either singly or all 27. Range is from 0-30, where 0 corresponds to
-15dB, and 30 to +15dB. The first byte is the curve to use for output. The second byte is the particular band
of interest.
Host sends command - 3
Host sends 2 bytes:
Host receives 1 or 27 bytes (see above): EQ band levels
Byte 1: 0 - Current EQ setting
1 - Stored EQ curve
2 - User Target curve 1
3 - User Target curve 2
4 - User Target curve 3
5 - Factory Target curve 1
6 - Factory Target curve 2
7 - Factory Target curve 3
Byte 2: 0-26 gives single band level 1-27 (corresponding to 40Hz - 16KHz, ISO
centers) 27 or greater outputs all 27
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CEQ1/1 und CEQ1/1BB