Protection Systems; Studio Reference Indicator States - Crown STUDIO AMPLIFIER Owner's Manual

The green
nously with the amplifier's output signal. The signal de-
tector is connected to the signal path after the input
gain stages and level controls, so a flashing indicator
tells you that there is audio in and out of the amplifier.
Note: The signal presence indicators may not report
signal presence if the output signal level is too low.
The
output meters that can be set to monitor either the dy-
namic range or the level of the output signal. They are
factory-set to show dynamic range. A switch located
behind the front panel is used to select the meter dis-
play mode (see Section 4.4 for complete instructions).
ODEP IOC SIGNAL
ODEP IOC SIGNAL
ODEP IOC SIGNAL
ODEP IOC SIGNAL
ODEP IOC SIGNAL
ODEP IOC SIGNAL
ODEP IOC SIGNAL
ODEP IOC SIGNAL
flash synchro-
are five-segment
ODEP
ODEP
Fig. 4.2 Studio Reference Indicator States
I I I I I II II II II II
As dynamic range meters they show each channel's
ratio of peak-to-average power in dB. The dynamic
range may be low for sources like AM/FM radio or low-
quality recordings. Other sources like live music or
high-quality recordings may be much higher. As out-
put level meters they show how high the output levels
are in dB relative to full power. At 0 dB, the unit is deliv-
ering full standard 1 kHz power (see Section 6).

4.3 Protection Systems

Studio Reference amplifiers provide extensive protec-
tion and diagnostics capabilities. Protection systems
include ODEP , standby mode, an AC circuit breaker
P.I.P.
ODEP
Professional Studio Amplifiers
IOC
IOC
IOC