- CCD:
Our Cameras support CCD sensors made by E2V, Imager Labs, Fairchild, Site, Kodak, and others
- SIT-400 SENSOR HOUSING:
Housing designed for ultra-high vacuum operation
2 inch diameter, 1/8" thick SLAR coated UV grade fused silica window
Indium sealed window
Window heater
Stainless steel front housing
Single metal O-ring seal to back plate
Gold-plated copper back plate
Fluid-cooled heatsink
4-stage Peltier Thermo Electric Cooler (TEC) with copper cold post
RTD cold post temperature sensor
Back plate temperature sensor
Ambient temperature sensor
Thermal cutout switch removes power to TEC if back plate temperature exceeds 322 °K
Internally mounted evacuation valve with elastomeric seal and removable actuator
Optional: Ion pump mounted to back plate, used to maintain vacuum when camera is not operating
- CONTROLLER:
Timing signals generated by quartz oscillators
CPLD-based design (no internal software, but electrically reconfigurable)
Short cable to Sensor housing
Low-noise design (typically 2-3e- rms)
Dual-slope integration
16-bit A/D
Readout rate -- 200K pixels/sec
LVDS communication with interface to PC
|
- BASE UNIT:
Supplies all voltages to operate camera
Linear (not switching) power supplies for low noise
TEC temperature changes restricted to less than 5 °K /second to comply with CCD manufacturer's requirements
RS-232 control of TEC temperature setpoint and window heater drive
RS-232 readout of TEC, ambient, back plate, and Base unit temperatures, and TEC current and window heater current
Fast-recovery driver for Melles Griot or Uniblitz multi-blade shutters or support electronics for Sci-In Tech Photometric shutters
Panel meter for TEC current
- CABLES:
Two ultra-flexible 3.6 meter cables from Controller to Base unit
Cables suitable for operation below -25 °C
Most cable connectors MIL-C-38999 style
- INTERFACE TO PC:
CPLD-based design
Connects to ECP-mode parallel port of PC via a short (1-2m) cable
Cable between Controller and Interface can be long
Additional cable from Base unit to PC serial port for RS-232 remote functions described above
|
