Setting Audio Levels - Extron electronics DMP 128 User Manual

Setting Audio Levels

The audio dB to SIS 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 determines those minimum and maximum
levels for the individual controls. Once the range and a value within that range are selected,
use table 2
SIS
X6!
Alternately, the following formula is used to convert a desired dB value into the proper SIS
value:
(Desired dB x 10) + 2048 equals the SIS value.
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
on page 150 to find the SIS value for the desired dB level.
Title Function
Attenuation/Gain
Mic/line gain ( )
A
Attenuation/Gain
Pre-mixer gain ( )
B
Attenuation/Gain
Virtual return gain ( )
C
Attenuation/Gain
Post-mixer trim ( )
D
Attenuation
Output volume ( )
E
Range
- 18.0 to +80.0 dB
- 100.0 to +12.0 dB
- 100.0 to +12.0 dB
- 12.0 to +12.0 dB
- 100.0 to +0.0 dB
DMP 128 • SIS Programming and Control 149