Specifications
Table Of Contents
- iXon Ultra
- SAFETY AND WARNINGS INFORMATION
- SAFETY AND WARNINGS SYMBOLS
- MANUAL HANDLING
- SHIPPING AND STORAGE PRECAUTIONS
- SECTION 1 - INTRODUCTION TO IXON ULTRA HARDWARE
- 1.1 - TECHNICAL SUPPORT
- 1.2 - DISCLAIMER
- 1.3 - TRADEMARKS AND PATENT INFORMATION
- 1.4 - COMPONENTS
- 1.4.1 - Camera description
- 1.4.2 - Camera Power Supply Unit
- 1.4.3 - SOFTWARE
- 1.5 - SPECIFICATIONS
- 1.6 - ACCESSORIES
- 1.7 - SAFETY PRECAUTIONS AND MAINTENANCE
- 1.7.1 - Care of the camera
- 1.7.2 - Regular checks
- 1.7.3 - Annual electrical safety checks
- 1.7.4 - Replacement parts
- 1.7.5 - Fuse replacement
- 1.7.6 - Working with electronics
- 1.7.7 - Condensation
- 1.7.8 - Dew Point graph
- 1.7.9 - EM Gain ageing
- 1.7.10 - Minimizing particulate contamination
- 2.1 - INSTALLING THE HARDWARE
- 2.1.1- PC requirements
- 2.2 - INSTALLING ANDOR SOLIS SOFTWARE - WINDOWS O/S(XP/VISTA/SEVEN)
- 2.3 - NEW HARDWARE WIZARD
- 2.5 - WATER PIPE CONNECTORS
- 2.6 - MOUNTING POSTS
- 2.7 - COOLING
- 2.8 - START-UP DIALOG
- 3.1 - EMCCD OPERATION
- 3.1.1 - Structure of an EMCCD
- 3.1.2 - EM Gain & Read Noise
- 3.1.3 - EM Gain ON vs EM Gain OFF
- 3.1.4 - Multiplicative Noise Factor and Photon Counting
- 3.1.5 - EM Gain dependence and stability
- 3.1.6 - RealGain: Real and Linear gain
- 3.1.7 - EM Gain Ageing: What causes it and how is it countered?
- 3.1.8 - Gain and signal restrictions
- 3.1.9 - EMCAL
- 3.2 - COOLING
- 3.2.1 - Cooling options
- 3.2.2 - Heat generated in the EMCCD
- 3.2.3 Heatsink “hot side“ temperature
- 3.2.4 - Fan settings
- 3.3 - SENSOR READOUT OPTIMIZATION
- 3.3.1 - Sensor Pre-amp options
- 3.3.2 - Variable Horizontal Readout Rate
- 3.3.3 - Variable Vertical Shift Speed
- 3.3.4 - Output amplifier selection
- 3.3.5 - Baseline Optimization
- 3.3.5.1 - Baseline Clamp
- 3.3.6 - Binning and Sub Image options
- 3.4 - ACQUISITION OPTIONS
- 3.4.1 - Capture Sequence in Frame Transfer (FT) Mode
- 3.4.1.1 - Points to consider when using FT Mode
- 3.4.2 - Capture Sequence in Non-Frame Transfer Mode (NFT) with an FT EMCCD
- 3.4.2.1 - Points to note about using an FT EMCCD as a standard EMCCD
- 3.4.3 - Capture Sequence for Fast Kinetics (FK) with an FT EMCCD
- 3.4.3.1 - Points to consider when using Fast Kinetics mode
- 3.4.4 - Keep Clean Cycles
- 3.5 - TRIGGERING OPTIONS
- 3.5.1 - Triggering options in Frame Transfer (FT) mode
- 3.5.1.1 - Internal Triggering (FT)
- 3.5.1.2 - External Triggering (FT)
- 3.5.1.3 - External Exposure (FT)
- 3.5.2 - Triggering options in Non-Frame Transfer (NFT) mode
- 3.5.2.1 - Internal (NFT)
- 3.5.2.2 - External & Fast External (NFT)
- 3.5.2.3 - External Exposure (NFT)
- 3.5.2.4 - Software trigger (NFT)
- 3.5.3 - Trigger options in Fast Kinetics (FK) mode
- 3.5.3.1 - Internal (FK)
- 3.5.3.2 - External (FK)
- 3.5.3.3 - External Start (FK)
- 3.6 - SHUTTERING
- 3.7 - COUNT CONVERT
- 3.8 - OPTACQUIRE
- 3.8.1 - OptAcquire modes
- 3.9 - PUSHING FRAME RATES WITH CROPPED SENSOR MODE
- 3.9.1 - Cropped Sensor Mode Frame Rates
- 3.10 - ADVANCED PHOTON COUNTING IN EMCCDs
- 3.10.1 - Photon Counting by Post-Process
- 3.11 - SPURIOUS NOISE FILTER
- 4.1 - EMCCD TECHNOLOGY
- 4.1.1 - What is an Electron Multiplying CCD?
- 4.1.2 - Does EMCCD technology eliminate Read Out Noise?
- 4.1.3 - How sensitive are EMCCDs?
- 4.1.4 - What applications are EMCCDs suitable for?
- 4.1.5 - What is Andor Technology's experience with EMCCDs?
- 4.2 - EMCCD SENSOR
- 4.3 - VACUUM HOUSING
- 4.3.1 - Thermoelectric cooler
- 4.4 – USB 2.0 INTERFACE
- 4.5 - OUTGASSING
- 4.6 - EXTERNAL I/O
- 4.7 - SIGNAL DIAGRAMS
- 4.8 - CAMERALINK
- SECTION 5: TROUBLESHOOTING
- 5.1 - UNIT DOES NOT SWITCH ON
- 5.2 - SUPPORT DEVICE NOT RECOGNISED WHEN PLUGGED INTO PC
- 5.3 - TEMPERATURE TRIP ALARM SOUNDS (CONTINUOUS TONE)
- 5.4 - CAMERA HIGH FIFO FILL ALARM
- 5.5 - USE OF MULTIPLE HIGH SPEED USB 2.0 I/O ON ONE CAMERA
- A.1 - GLOSSARY
- A.1.1 - Readout sequence of an EMCCD
- A.1.2 - Accumulation
- A.1.3 - Acquisition
- A.1.4 - A/D Conversion
- A.1.5 - Background
- A.1.6 - Binning
- A.1.7 - Counts
- A.1.8 - Dark Signal
- A.1.9 - Detection Limit
- A.1.10 - Exposure Time
- A.1.11 - Frame Transfer
- A.1.12 - NOISE
- A.1.12.1 - Pixel Noise
- A.1.12.1.1 - Readout Noise
- A.1.12.1.2 - Shot Noise
- A.1.12.1.2.A - Shot Noise from the Signal
- A.1.12.1.2.B - Shot Noise from the Dark Signal
- A.1.12.1.3 - Calculation of Total Pixel Noise
- A.1.12.2 - Fixed Pattern Noise
- A.1.13 - Quantum Efficiency/Spectral Response
- A.1.14 - Readout
- A.1.15 - Saturation
- A.1.16 - Scans (Keep Clean and Acquired)
- A.1.17 - Shift Register
- A.1.18 - Signal To Noise Ratio
- B - MECHANICAL DIMENSIONS
- C - DECLARATION OF CONFORMITY
- D - HARDWARE AND SOFTWARE WARRANTY SERVICE
- D.1 - SERVICE DESCRIPTION
- D.2 - Access to Service
- D.3 - Hardware Remediation
- D.4 - Software Remediation
- E - THE WASTE ELECTRONIC AND ELECTRICAL EQUIPMENT REGULATIONS 2006 (WEEE)
Version 1.1 rev Jan 2013
Page 51
iXon Ultra
, Features and Functionality
Andor recommends using the default highest value pre-amp setting (e.g. Gain3 setting of the iXon Ultra 897E giving
~ 4 e-/count @ 10MHz) for most low-light applications. Most genuinely low-light applications are not limited by well
capacity, as long as sensible EM Gain settings are applied (we recommend not exceeding x500 EM Gain, except for
single photon counting experiments). Even at this highest pre-amp setting, the typical imaging pixel well depth will still
be exceeded before the 16-bit A/D would saturate (180,000 e- ÷ 4 e-/count = 45,000 e-). The remainder of the 16-bit
A/D range is therefore still free to be utilized by the extended well capacity of the gain register. For example, with an EM
Gain of x300 (RealGain
TM
), it would take 600 electrons in a pixel of the sensor to reach this A/D saturation limit. Say the
QE is 80% at the wavelength of interest then this corresponds to maximum of 750 photons falling onto that pixel. That is
perfectly satisfactory dynamic range for the vast majority of low-light imaging applications.
NOTE: A Side effect of the new high speed ADC method chosen for the iXon Ultra, is that the full range of ADC
codes 0- 65535 is not available. A margin has been added and the iXon will reach an ADC saturation that is lower
than 65535. See Camera performance sheet for details.
The core reason for recommendation of this pre-amp setting, even over the middle (Gain2) pre-amp setting, is that it
implements an additional restriction as to how much charge is allowed to build up in the sensor. This in turn will help
minimize the rate of EM Gain ageing (please see page 42 for further details on measures against gain ageing). However,
some applications can be very demanding of dynamic range, and for those a lower pre-amp setting such as Gain2 is
recommended. This ensures the A/D capacity is more closely matched to the well capacity of the gain register pixels and
provides the maximum dynamic range. Also, as mentioned above, to maximize the true dynamic range of the camera
tuning the RealGain
TM
gain setting to a value close to the value of the readout noise at the selected readout speed is
recommended (e.g. if readout noise is ~ 50 electrons @ 10 MHz, set the EM Gain to x50 for maximum dynamic range).