Cloud Electronics CDI-S100 - Manual (Page 9)

CDI-S100 Installation Guide v1.0 9
2. Music Level
Levels can either be set to an absolute value (in dBs), or increased/decreased by a specified number
of dBs. Adjustment can be made in half-dB steps, and the values m, p and q in the General Format
table above represent the number of half-dB steps.
For absolute levels, the value of m corresponds to attenuation rather than gain, thus 0 dB is
maximum level and at -90 dB the music channel is effectively muted. The value of m in the general
format is the attenuation level in half-dBs, and may thus have a value of between 0 and 180. Thus to
set the output level to 10 dB below the maximum level, m must be given a value of 20.
To alter the music level by a specified amount, the ASCII characters ‘A’ is replaced by ‘U’ (up) or ‘D’
(down) in the string. The value of p or q in the general format is the level increase in half-dB steps
(0 to 180), or the level decrease in half-dB steps (0 to 180) respectively. A command to increase
the level by a number of dBs greater than the current attenuation will set the level to maximum.
Similarly, a command to decrease the level by a number of dBs greater than (90 minus the current
attenuation) will mute the music channel.
EXAMPLE COMMAND (ASCII) COMMAND (HEX)
Set music level to 12 dB
below maximum
3C 4D 55 2C 4C 41 32 34 2F 3E
Reduce music level by 10 dB 3C 4D 55 2C 4C 44 32 30 2F 3E
Increase music level by 6 dB 3C 4D 55 2C 4C 55 31 32 2F 3E
3. Music Mute/Unmute
The command strings to mute or unmute the music channel contain no variables, thus the
commands given in the General Format table are always applicable.
EXAMPLE COMMAND (ASCII) COMMAND (HEX)
Mute music channel 3C 4D 55 2C 4D 2F 3E
Unmute music channel 3C 4D 55 2C 4F 2F 3E
4. Mute/unmute individual microphones
Each of the CX462’s four mic inputs may be muted or unmuted individually. The character y in the
string represents the number of the mic input, and can have a value of between 1 and 4.
EXAMPLE COMMAND (ASCII) COMMAND (HEX)
Mute mic input 1 3C 4D 49 2E 31 2C 4D 2F 3E
Unmute mic input 3 3C 4D 49 2E 33 2C 4F 2F 3E