SPECIFICATIONS
CA6.4
•Frequency Response: 20 Hz to 20 KHz ( +/- 1 dB )
•20 Watts RMS / Channel @ 8Ω
•12 Channels / 6 Stereo Amplifiers
•Total Harmonic Distortion: .01%
•Signal to Noise Ratio: 89 dB min, “A” weighted
•Power Supply: 110/220V High Current Torroidal
•ETL listed. Conforms to UL Standard UL1492 and CSA Standard
•Fully Functional Keypad with IR Receiver Centered at 40 kHz and 56K kHz
CA4.4pi
•Frequency Response: 20 Hz to 20 KHz ( +/- 1 dB )
•20 Watts RMS / Channel @ 8Ω
•8 Channels / 4 Stereo Amplifiers
•Total Harmonic Distortion: .01%
•Signal to Noise Ratio: 89 dB min, “A” weighted
•Power Supply: 110/220V High Current Torroidal
•ETL listed. Conforms to UL Standard UL1492 and CSA Standard
•Fully Functional Keypad with IR Receiver Centered at 40 kHz and 56K kHz
TROUBLESHOOTING
KEYPAD WIRING PROTECTION CIRCUIT | ELIMINATION OF BALANCE LINE |
To provide protection for incorrect keypad wiring, this CA- Series product is equipped with a short circuit protection device. In the event of a keypad cable short, or incorrect keypad wiring, this device will automatically interrupt power to all keypad ports.
Once installed, if the keypads connected to your
1)Turn off the power switch on the front of the
2)Disconnect all keypad connections from the rear of the controller.
3)Check the wiring configuration for each keypad, checking both ends (the CA unit and the CA keypads) of the
4)If incorrect connections were found, correct the wiring and reconnect the keypads to the controller. After the controller has been powered off for at least 15 seconds, turn on the power switch of the
5)If the problem persists, repeat steps above trying each keypad consecutively.
6)Inadequate ventilation can allow normal heat to build up and trip the protection circuit.
The following diagram shows how resistors may be used at the Keypad connection on the rear of the CA master control unit, to provide 2.5VDC to the balance control line for cen- tering. This circuit will stabilize the balance line input and keep it centered. They can be used to free up one of the 8 required conductors if one is open, shorted or if an extra conductor is needed for a secondary IR receiver’s signal in that zone. Position #1 is GND, #3 is 12VDC, #8 is Balance.
CA Keypad Connector @ Rear of Processor
820 Ohm 1/4w
3.9K Ohm 1/4w
1 2 3 4 5 6 7 8
GND +12VDC | Balance |
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