C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3
5.6 Front-panel monitoring and adjustments
5.6.1 Level indicators
▸ Orange
▸ Red
▸ Green
▸ Green
▸ Signal / Hi-Imp
5.6.2 Level adjust
Step Attenuation Step Attenuation
1 (Min) -Inf. dB 12 -8.7 dB
2 -Inf. dB 13 -7.4 dB
3 -50 dB 14 -6.0 dB
4 -40 dB 15 -4.5 dB
5 -35 dB 16 -2.7 dB
6 -21.5 dB 17 -0.6 dB
7 -21.5 dB 18 -0.3 dB
8 -14.7 dB 19 - 0.1 dB
9 -12.9 dB 20 0 dB
10 -11.4 dB 21 (Max) 0 dB
11 -10.0 dB