d&b D6 Hardware - Manual (Page 10)

3.2. Indicators
3.2.1. LC Display
The LC Display [4] serves as a user interface and display for all
configuration settings and status information.
The display is illuminated and can be set to "on/off/timeout 10 s."
A detailed description of the menu structure and access is given in the
D6 Software manual, which is also provided with the D6.
3.2.2. ISP LED
The ISP LED [5] ( Input Signal Present) indication is unaffected by the
setting of the level control and the MUTE function but will not operate in
STANDBY mode.
The ISP LED illuminates green:
- when the analog input signal fed to the D6 analog inputs
exceeds –30 dBu.
- when the D6 digital input is locked to 48 or 96 kHz and the
digital signal exceeds –57 dBFS (FS = Full Scale).
3.2.3. GR LED
The GR LED [6] ( Gain Reduction) illuminates yellow depending on the
input signal. The D6 limiter circuit reduces gain by more than 3 dB. This
state is not critical but indicates that the system has reached its limits.
3.2.4. OVL LED
The OVL LED [7] ( Overload) illuminates red depending on the input
signal. Either the input signal level is too high or gain reduction exceeds
12 dB.
- If in doubt please reduce the input gain at the D6 level control. If
caused by the gain reduction, the OVL LED stops illuminating. If the
condition does not change, the input signal to the D6 is too high
(greater than +25 dBu).
An overload could also be caused by accumulating the source input
A+B or by high gain settings (boosts) in the single EQ bands, while the
input signal is lower than +25 dBu.
Flashes (1:1 mark space) ⇒ ⇒ ⇒ ⇒ Error
An error message will be displayed altering with the device name.
D6 Amplifier, Hardware manual (1.9 EN) Page 10 of 24