Princeton Instruments PI-MAX 3 System, Manual, Page: 103 / 150

Appendix A Specifications 103
is low and the signal is built up over a large number of exposures or over a long
exposure. Poor linearity is observed when one attempts to get large signal
amplitude from a single short exposure. This is a general property of MCP
image intensifiers, not just of PI ICCDs.
Photocathode Dark Charge (EBI):
Red-blue enhanced, < 5 counts/pixel-second;
Red-enhanced, < 15 counts/pixel-second
Phosphor Decay:
3 ms P43 standard, 2 µs P46
phosphor is optional
Phosphor Emission Spectra
P43 = Gd2O2S:Tb.
P46 = Y3Al5O12:Ce.
Spectral Range
Gen II: Red-blue enhanced, 180-
900 nm; Red enhanced, 360-920 nm
Filmless Gen III: HQ, 450-900 nm (HQ
(Blue), 375-900 nm
Nonuniformity: Typically 12% pk-pk for Gen II 18 mm intensifiers, 16% pk-pk for
Gen II 25 mm intensifiers
CCD Cooling:
Down to -25°C air cooled; supplementary cooling with circulating
room-temperature water will enhance cooling performance. Temperatures to
-35°C are achievable with supplemental circulating coolant via a CoolCUBE
II
circulator. Chilled coolant can achieve even lower temperatures but must be used
with extreme caution.
Note: See warning in "Temperature Control," page 36 before initiating
supplemental water cooling.
Readout Noise:
1-1.5 counts RMS in gated operation (100 kHz).
A/D Converters
Standard: 16-bit, 80 MHz readout rate. One or two converters depending on the
CCD
Linearity:
better than 1%.
Readout noise: Depends on the pixel rate and CCD type.
Input:
TRIGGER IN:
Rear Panel BNC. It is the main trigger input to timing generator.
Used for triggering by an external source.
Outputs:
READY:
TTL signal. Represents camera status. It changes state when ready just
before the exposure.
Gig-E: Gigabit Ethernet connector.