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IR-762 Energy Modulator | |
The IR-762 Energy Modulator is a variable speed rotating disk chopper designed for use with radiation sources, including blackbody, tungsten filament, mercury lamps, Nernst glowers and as part of instruments where modulated radiation is needed. The IR-762 has been specially designed to integrate with the IR-508 & IR-518 Blackbody Sources. For other applications a table mount is available. The IR-762 Energy Modulator system consists of the modulator head assembly and modulator controller. The controller operates the motor, blade rotation, and speed of the modulation frequency. |
IR-762 Controller
Output Voltage: -10vdc, max frequency
Output Current: 100ma, current limited
Stability: 0.01% / °C (typical)
Frequency Control: Internal-manual control via ten-turn potentiometer. External-rear mounted BNC connector 0-+9vdc input
Frequency Stability: Better than ± 0.3% of reading Typically ± 0.1% of reading within 10 to 100% of maximum frequency
Frequency Readout: 5 digit 0.6” LED display
Meter Accuracy: ± 0.005% of reading
Reference Output: +5v TTL pulse via bnc connectors
Power Requirement: 90-130v or 170-260v 50-60Hz 7VA
Housing: Two-tone aluminum/stainless -steel cover
Dimensions: 8.03” (19.0) wide X 3.45” (3.5) high X 8.35 deep, weight 3.1-lbs. (3.8) (rack-mounted)
IR-762 Modulator Head
Motor: 11-pole dc motor, sleeve bearings, precious metal brushes
Ambient Temperature: -20°C to +65°C
Optical Sensor: High speed, IR LED phototransistor switch
Finish: Non-reflective Mil-A-8625E Type II black anodized
Weight: 0.62 lbs.
Blades
Material: 0.012” spring steel
Diameter: 2.8” photo-chemically etched for precision
Surface Finish: Non-reflective black oxide
Mark/Space Ratio: 1:1 with one blade Adjustable from 1:1 to 0:1 with two blades
# Of Slots |
Frequency Range |
Max. Aperture |
Jitter |
2 |
4 Hz-200 Hz |
1.85” |
± 0.2° max |
10 |
20 Hz-1 kHz |
0.40” |
± 1° max |
30 |
60 Hz-3 kHz |
0.13” |
± 3° max |