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Operating Manual-4048A digital signal processor
2.) Use a valid PC serial port. You must use a serial port that is not opened to any other application, such as a
mouse, modem, or another program. To verify that the port exists look in: Control Panel - System - Device Manager
- Ports. While you're there, make sure that the port has no warnings or conflicts. There is no need to change the port
settings because Maestro Software will do this automatically. Finally, you must select the valid port in software. This
is done under the Communications heading - Com Port Assignment.
10. SPECIFICATIONS
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . Active Balanced, 18K
Max. Input Level . . . . . . . . . . . . . . . . . . +20dBu
Input Gain Range . . . . . . . . . . . . . . . . . . -40dB to +12dB
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . Active Balanced, 112Ω
Max. Output Level . . . . . . . . . . . . . . . . . +20dBu
Output Gain Range . . . . . . . . . . . . . . . . -40dB to +12dB
EQ
EQ Filter Types . . . . . . . . . . . . . . . . . . . . 1st or 2nd Order High or Low Shelf, Parametric, All-pass
Shelving Filter Boost/Cut Range . . . . . ±15dB
Shelving Filter Frequency Range . . . . Low Shelf 19.7Hz to 2kHz, High Shelf 3.8kHz to 21.9kHz
Parametric Filter Boost/Cut Range . . +15dB/-30dB
Parametric Filter Frequency Range . . 19.7Hz to 21.9kHz, 1/96 Octave Steps
Parametric Filter Bandwidth . . . . . . . . Four Octaves to 1/64 Octave
All-pass phase shift . . . . . . . . . . . . . . . . 0 deg at low freq, -180 deg at selected freq, -360 deg at high freq.
Delay
Output Delay . . . . . . . . . . . . . . . . . . . . . . 0-682 milliseconds
Crossover
HPF and LPF Frequency Range . . . . . 19.7Hz to 21.9kHz, Off
Available Filter Types . . . . . . . . . . . . . . 12dB/Oct Butterworth, 12dB/Oct Bessel, 12dB/Oct Linkwitz-Riley
18dB/Oct Bessel, 18dB/Oct Linkwitz-Riley=18dB/oct Butterworth
24dB/Oct Butterworth, 24dB/Oct Bessel, 24dB/Oct Linkwitz-Riley
Limiter
Threshold Range . . . . . . . . . . . . . . . . . . . -20dBu to +20 dBu
Ratio Range . . . . . . . . . . . . . . . . . . . . . . . 1.2:1 to INF:1
Attack Time Range . . . . . . . . . . . . . . . . . 0.5ms/dB to 50ms/dB
Release Time Range . . . . . . . . . . . . . . . . 10ms/dB to 1 Second/dB
Frequency Response . . . . . . . . . . . . . . . . 20Hz to 20KHz, ±0.25dB
THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01% @ 1KHz, +20dBu
Dynamic Range . . . . . . . . . . . . . . . . . . . . >110dB 20Hz - 20KHz unweighted
Audio Sampling Rate . . . . . . . . . . . . . . . 48KHz
Propagation Delay . . . . . . . . . . . . . . . . . 1.46mS
Signal LEDs & Clip . . . . . . . . . . . . . . . . Inputs: -20dBu, 0dBu, Clip, Mute
Outputs: -20dBu, 0, Limit Threshold, Clip, Mute
RS232 Cable Distance . . . . . . . . . . . . . . Up to 1300 ft (400m) using high quality cable
AC Requirements . . . . . . . . . . . . . . . . . . Universal Power Supply, 85-265VAC, 50/60Hz, 30W max
Environmental . . . . . . . . . . . . . . . . . . . . . 40°F - 120°F (4°C-49°C) Non-condensing
4048A Weight . . . . . . . . . . . . . . . . . . . . . 8 lbs (3.6kg) shipping, 6 lbs (2.7kg) net