Extron electronics DMP 128 - Setting Audio Levels

Setting Audio Levels
The audio dB to SIS command conversion values in table 2 beginning on the next page,
are the same for all signal level blocks. However, the minimum and maximum levels differ
depending upon the individual level control. The following table can determine those
minimum and maximum levels for the individual controls. Once the range and a value
within that range is selected, table2 is used to find the SIS value for the desired dB level.
SIS Title Function Range
X6!
Mic/line gain (
a
)
Attenuation/Gain –
18.0 to +80.0dB
Pre-mixer gain (
b
)
Attenuation/Gain –
100.0 to +12.0dB
Virtual return gain (
c
)
Attenuation/Gain –
100.0 to +12.0dB
Post-mixer trim (
d
)
Attenuation/Gain –
12.0 to +12.0dB
Output volume (
e
)
Attenuation –
100.0 to +0.0dB
Alternately, the following formula is used to convert a desired dB value into the proper SIS
command:
(Desired dB x 10) + 2048
Examples:
SIS value for 0 dB:
• (0 x 10) + 2048 = 0 + 2048 = 2048
SIS value for +7.0 dB:
• (+7.0 x 10) + 2048 = 70 + 2048 = 2118
SIS value for +22.5 dB:
• (+22.5 x 10) + 2048 = 225 + 2048 = 2273
SIS value for -12.0 dB:
• (-12.0 x 10) + 2048= -120 + 2048 = 1928
DMP128 • SIS Programming and Control 148