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manual abstract
BEFORE USING THIS INSTRUMENT, READ BACK COVER FOR FURTHER WARNINGS. CLASS B COMPUTING DEVICE: INFORMATION TO USER This equipment generates and uses radio frequency energy and if not installed and used properly, that is. in.accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential Installation. .However, there is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on. the user is encouraged to try to correct the interference by one or more of the following measures: • reorient the receiving antenna • relocate the equipment with respect to the receiver • move the equipment away from the receiver • plug the equipment into a different outlet so that the equipment and receiver are on different branch circuits. If necessary, the user should consult the dealer or an experienced radio-television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful. "How to Identify and Resolve Radio-TV Interference Problems” This booklet is available from the US Government Printing Office, Washington, DC 20402. Stock No. 004-000-00345-4. INTRODUCTION The Peavey Digital Effects Processor utilizes the most advanced technologies available to provide high performance digital audio processing in a unique and affordable package. Its quality and capabilities are sufficient for both the performing musician and the recording artist. The Digital Effects Processor model 1310 provides continuously adjustable delay settings from Q.1 milliseconds to 1310 milliseconds (1.31 seconds) with absolutely no change in signal quality. A full audio bandwidth (20 Hz to 20 KHz) is available at all settings and with any of the effects enabled. This allows for utilization not only with musical instrument signal inputs, but also studio quality signal inputs. By utilizing the extended range of delay settings, a wide range of digital effects including flanging, doubling, chorusing, and slap-back echo can be obtained through the front panel controls. The front panel controls allow for the addition of LF0 modulation of the delay length, feedback or regeneration of the delayed signal, LF0 modulation of the output signal frequency and total amplitude and phase control of both feedback and delayed signals. Any of these digital effects can be obtained without sacrificing either audio Signal-to-Noise ratio, dynamic range or bandwidth. The feature that allows this Digital Effects Processor to provide the extended bandwidth without aliasing and still provide the effects offered by lower performance units is a unique hybrid Relative Time Monitor (RTM) system utilizing state-of-the-art Time/Frequency Equalization techniques. The RTM allows for modification of the delay length and frequency modulation without altering the necessary sampling rate required for full-bandwidth operation. This special signal processing implementation provides the ultimate in digital effects at an affordable price without sacrificing performance. TABLE OF CONTENTS I. INTRODUCTION_1 II. SPECIFICATIONS_2 III. FEATURES_2 IV. FRONT PANEL DESCRIPTION_3 V. REAR PANEL DESCRIPTION _3 VI. CIRCUIT BLOCK DIAGRAM AND DESCRIPTION -4 VII. TYPICAL EFFECTS DESCRIPTIONS_5 S 6 SPECIFICATIONS - DELAY RANGE 0.1 to 1310 milliseconds DELAY ADJUST 0.1 (10%) to 1.0 (100%) of range FREQUENCY RESPONSE 20 Hz to 20 KHz @all settings (+/- 1.0 dB) QUANTIZATION 12 Bits A/0 & 0/A Conversion SAMPLE RATE: 50 KHz A/D Conversion Rate ANTI-ALIASING FILTER 20 KHz 6-Pole Chebyshev Low Pass Filter 36 dB/Octave minimum roll-off SIGNAL TO-NOISE 70 dB minimum delay 100 dB minimum dry DYNAMIC RANGE 100 dB minimum delay 100 dB minimum dry INPUTS Low Level 0.25 Vrms, -12 dBV (Front Panel) Line Level 2.0 Vrms, +6 dBV (Rear Panel) OUTPUTS Low Level Stereo 0.25 Vrms, -12 dBV (Front Panel) Line Level Stereo 2.0 Vrms, +6 dBV (Rear Panel) HEADROOM Active +12 dB reserve Overload +6 dB reserve VCO MODULATION Complete control of the LFO modulation of the internal VCO LFO Depth Range Up to 20:1 LFO Frequency 0.1 Hz to 10 Hz HOLO (remote only) Replays signal in memory indefinitely without degradation. REGENERATION Allows feedback of delayed signal for multiple echos or for effects. Filter - 5 KHz Low Pass Filter. FOOTSWTICH Bypass Hold FEATURES. •Continuously variable delay time from 0.1 milliseconds to 1310 milliseconds (1.31 seconds) with 9 operating ranges. ‘Full 20 Hz to 20 kHz bandwidth at all delay settings and with any special effects active. 'Unique...