7-2
Lexicon
PCM 91 User Guide
Digital Audio Interface Connectors: Coaxial, RCA type (2); Balanced, XLR (2)
Format: S/PDIF (IEC-958) consumer and AES/EBU (AES3-1995)
professional interface
Sample Rates: 44.1 kHz, 48 kHz
Internal Audio Data Paths Conversion: 20 bits
DSP: 20 bits
External Memory Card Connector: Accepts PCMCIA Type I cards, 68 pins
Standards: Conforms to PCMCIA 2.0 / JEIDA 4.0
Card Format: Supports up to 1MB SRAM (attribute memory not required)
Control Interface MIDI: 5-pin DIN connectors provided for MIDI IN, THRU, & OUT
Footswitch: 1/4 inch T/R/S phone jack provided for
2 independent momentary footswitches
System detects normal-open, or normal-closed on power up
Foot controller: 1/4 inch T/R/S phone jack provided for footpedal
(100Ω minimum, 10kΩ maximum impedance)
General Dimensions: 19.0"W x 1.75"H x 12.0"D (483 x 45 x 305 mm)
19 inch rack mount standard, 1U high
Weight: Net: 6.4 lbs (2.9 kg)
Shipping: 9.5 lbs (4.3 kg)
Power
Requirements: 100-240 VAC, 50-60 Hz, 35 W, 3-pin IEC power connector
RFI/ESD: Conforms to FCC Class B,
EN55022 Class B (CE), IEC 801-2, IEC 801-3
Environment: Operating temperature: 32˚ to 104˚F (0˚ to 40˚C)
Storage temperature: -22˚ to 167˚F (-30˚ to 70˚C)
Humidity: maximum 95% without condensation
Unless otherwise noted, all audio specifications assume rear-panel switch set to BAL, input level control
is set for unity gain (0dB), and analog I/O connections wired for balanced configuration.
Specifications subject to change without notice.
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