Descriptions:

DCI-21M can automatically detect audio amplifier failure and switch between “main amplifier” and “standby amplifier;with 4 identical independent channels, each channel can support automatic detection and switching of the main/standby amplifier.

Features:

1. Can be controlled by DCI-100

2. Using an address module to number the address in decimal format, and  directly display the machine address number in a clear and intuitive way

3. Can connect 5 main amplifiers and 1 standby amplifier;

4. High channel switching capability: 150V/20A, audio signal;

5. Independently adjust the volume of each input channel;

6. It has the function of fully automatic detection of whether each main amplifier has malfunctioned, and can switch the first faulty main amplifier to the backup amplifier. When more than one main amplifier fails, only the first faulty main amplifier can switch to the backup amplifier, and other faulty machines only display fault indicator lights and sound alarms without switching actions, And the reset button or power switch status remains unchanged before restarting the machine;

7. Capable of remote on/off and remote fault status detection;

8. Equipped with a short circuit signal to activate the power.

Specification:

Model:DCI-21M

Number of main channel groups:5 groups (CH1~CH5)

Standby channel:1 unit

Channel switching capability:150V/20A, audio signal

Signal input port parameters:0.775V (0 dB), 10k ohms (Ω), unbalanced

Signal output port parameters:0.775V (0 dB), 10k ohms (Ω), unbalanced 

                                                  Remark: When the volume is adjusted to maximum

Input detection threshold:50mV, detection time constant 20mS

Output detection threshold:100mV, detection time constant 20mS

Inspection cycle:20mS, 30 rounds of inspection

Signal input port:In PUT (CH1~CH5)

Loop signal output port:OUT PUT (CH1~CH5)

Connect the main amplifier input port:Input (CH1~CH5)

Connect the input port of the standby power amplifier:OUTPUT (SPARE)

Connect the output port of the main power amplifier:Main AMPLIFIER (CH1~CH5)

Connect the output port of the backup power amplifier:SPARE AMPLIFIER

Speaker interface:SPEAKER OUTPUT (CH1~CH5)

Functional control:One power on button, one reset button, one alarm button, 

                               five volume adjustment buttons, one device address setting switch (2-position), 

                                one online control interface, and one short-circuit power activation port

Indicator light:  POWER, CH1~CH5 normal operation indicator light, 

                          CH1~CH5 fault status indicator light,

                          CH1~CH5 switching status indicator light

Protect:AC FUSE × 0.5A × 1

Power cord:(3) × 0.5mm2) × 1.5M (standard)

Power source:AC 220V ± 10% 50-60Hz

Power consumption:20-25W

Machine dimensions:89 (H) × 483 (W) × 350 (D) mm

Packaging size:145 (H) × 520 (W) × 435 (D) mm

Net weight:6.9kg

Gross weight:8.1kg