The Pulse Instruments PI-4001 Control Mainframe serves as the central control hub of the 4000 Series Test System, orchestrating high-precision, low-noise stimulus delivery for CCD, IR detector, and focal plane array characterization. The unit coordinates system operation, manages sequencing commands, and distributes control signals to connected clock and bias modules while maintaining exceptional noise isolation between digital electronics and analog driver cards.
Technical Specifications
Processor & Display
• Intel 80186 Microprocessor
• 7-inch amber CRT display, 80 characters per line
• Operating temperature range: 0°C to 50°C
Power Requirements
• 110 Vac ± 10%, 5 A max, 47–63 Hz
• 220 Vac ± 10%, 2.5 A max, 47–63 Hz
• Slow blow fuses for circuit protection
Output Performance
• Voltage range: +20.47 V to −19.48 V (manually selectable or programmable)
• Resolution: 10 mV or 11 bits plus sign bit
• Accuracy: ±100 mV (minimum transition times), ±125 mV (slower transitions)
• Output impedance: 50 Ω ±10%
• Noise floor: 3.5 µV/√Hz @ 1 Hz, 900 nV/√Hz @ 10 Hz, 400 nV/√Hz @ 100 Hz, 300 nV/√Hz @ 1 kHz
• Polarity: Normal or inverted, selectable via front panel, IEEE-488, or RS-232-C
Current Measurement
• 1 mA/V: ±(2% reading + 3 µA)
• 10 mA/V: ±(2% reading + 30 µA)
• 25 mA/V: ±(2% reading + 300 µA)
– Key Features
• Isolated clock output and TTL input via rear panel BNC connectors
• Optical isolation of control inputs from IEEE-488 Bus and chassis ground
• Multi-interface connectivity: PI-Bus, GPIB (IEEE-488), RS-232-C
• Front panel control or remote programming capability
– Physical Specifications
• Dimensions: 7.0″ H × 17.5″ W × 19.625″ D
• Weight: 15 lbs
• Rack-mount chassis with integrated cooling
– Compatibility & Integration
The PI-4001 functions as the master control element within the 4000 Series Test System and requires at least one PI-4002 Instrument Mainframe and one PI-4003 DC Power Mainframe to operate. Supports standard clock driver and DC bias card modules.
