 The Endevco Model 428 Piezoelectric/ISOTRON Signal Conditioner
is a high performance, general use, two-channel, rack-mounted
card with an isolated single-ended front-end designed
for use with Piezoelectric (PE) Accelerometers. ISOTRON
Accelerometers and Remote Charge Convertors (RCC). The
card provides one AC output proportional to the AC input
voltage or charge.
The AC output can be amplified with a programmable gain
of 0 to 10,000 or can be automatically scaled using the
Auto-Range feature. The selectable Low Pass 4-Pole, Butterworth
filter plug-in module is available in 1, 2, 4, 6 and 8
steps from 10 Hz to 80 KHz. (The default filter corner
is 10 kHz; Endevco Model 31875-XXXX.)
The Model 428 dual-channel card is designed to be used
with the Endevco Rack Model 4990, 19" rack. The Model
4990 rack is remotely controlled via Ethernet or optional
RS-232 interface and holds from one to 16 cards of the
400 series amplifiers in any combination.
The 400 Series Amplifier card family: Model 428 - Dual-Channel
Amplifier with Isolation; Model 482 - Eight-Channel Smart-Modal™
Amplifier card; Model 428 - Three-Channel PE/ISOTRON,
Non-Isolated Amplifier card and the Model 436 - Three-Channel
Non-Isolated Bridge Amplifier card, and Model 426 High-performance,
Isolated Bridge Amplifier card.
Features:
• Dual-Channel Piezoelectric/ISOTRON signal conditioner
• User selectable front-end
• Gain 0 to 10,000
• User selectable low-pass Butterworth filter corners
• 0.5 Hz to 100 kHz bandwidth (-3 dB corners)
• Computer-controlled via Ethernet or optional RS-232
• Gain auto-ranging
• PE sensor detection and ISOTRON
Endevco Model 428
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