Crown CE-4000 Instructions d'exploitation télécharger pdf (Page 27)

Page 27

CE-Series

Amps with an Attitude!

3 Operation

Operating a

CE-Series

amp is very straight-forward.

Indicators

See Figure 3.1 for positions of front-panel controls and indica-

tors.

Fault: OFF is good. This red indicator will blink under five dif-

ferent conditions:

1. When the amplifier is first powered up, until the unit is

ready for operation.

2. If the heatsinks reach a temperature above normal work-

ing limits.

3. If the transformer thermal protection circuit is activated.

4. If amplifier output wires develope a short-circuit.

5. Should the amplifier output stage become non-opera-

tional.

This circuit may be monitored remotely by plugging into the

back-panel RJ11 jack (Fault), and using a circuit like the one

described in Figure 5.2. Under some conditions, the output of

the amplifier will be muted.

Clip: The red Clip indicators turn on when distortion is audible

in the amplifier output.

Signal: Unlike some of our other amplifiers, on the

CE-Series

amplifiers, the green signal indicator illuminates when a signal

(> –40 dBm) is present at the

INPUT

of the amplifier. This indi-

cator is before the level control, so it can be used to trouble-

shoot wiring problems within a system. No green glow, no

signal is reaching the amplifier!

Power: The green Power indicator turns on when your

CE-

Series

amp has been turned on and has power.

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Crown CE-4000 Instructions d'exploitation Page 27