Instruction Manual

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• Maintenance
Chapter 9
Maintenance
Digital circuitry enjoys a reputation for long-term reliability and is largely free of the subtle degradation
that slowly damages audio quality. Your DigiCart/E has no required adjustments. Maintenance issues
relate to keeping it clean, operating at a safe temperature and correctly connecting external devices.
Because hazardous voltages may be present inside this product, refer service to qualified electronics service
technicians. Qualified technicians may obtain a factory service manual from 360 Systems Technical
Support Department.
WARNING
Connect only to a grounded 50/60 Hz AC outlet providing the correct voltage
(115 VAC or 230 VAC, as delivered).
Do not remove or defeat the grounding pin on the AC power cord.
A serious shock hazard may result from failing to make connection to
a properly grounded electrical outlet.
Do not use this product out of doors, in rain, or in damp or wet environments.
General Cleaning
Your DigiCart may be cleaned periodically with glass cleaner and a soft cotton cloth. Please note the
following important cleaning tips:
• Do not use paper tissue wipes as these may scratch the display window.
• It is recommended that you spray cleaning solutions onto a cloth before wiping the
DigiCart. Do not spray fluids directly on the DigiCart.
• Silicon rubber keypads may be cleaned with mild soap and water, using a soft sponge. Be
certain to wring excess solution from the sponge prior to wiping the DigiCart.
Calibration
DigiCart/E is factory calibrated to provide unity gain from analog input to analog output with a 100K ohm
impedance load. When a +4dBu reference signal is applied to an analog input, the amplitude of the
resulting digital signal recorded to disk will be 16dB below digital full scale. There should be no need to
re-calibrate the analog input section.
The analog output gain can be user-adjusted to match the input impedance of externally connected
equipment. With the external audio equipment connected to the analog outputs, play the 1KHZ.WAV file
supplied with DigiCart/E to produce a 1kHz sine wave signal at +4dBu. Observe the signal level on the