Compliant to requirements

Compliant to requirements
Indicates work required
to ccd controller
SDSU CONTROLLER
Generalized common requirements
comparison
Supports 4 readout channels
Remote diagnostics
Requires
Implimentation
4 boards required
Local diagnostics
Doesn't emit light
Dead time between integrations
Requires
implimentation
Unknown
Compliant
Non blocking commands
Command cycle time
< 50ms
No ! Is mute
while
occupied
Host Interface
Robust construction
Small size - Dewar mount possible
VME / SBuss /
PCI
Unknown
3 chassis
required
Minimal power consumption
< 50W
Low Noise performance
Minimum cabling
Compliant to
requirements
Shutter drive box
and power supply
box reqd.
0.7 lsb.
one / two boards reqd
(depending on speed)
Via local controller - net
accessable
via serial portbuilt in
LEDS switchable
Faster - non
blocking cmds
YES ! fully independent
sequencer
< 50ms
SCSI / PCI / VME
In service many
years @ ESO,
NOT, etc.
One chassis only
22W CMOS design
Everything inside
chassis
0.7 lsb
Compliant to
requirements
COPENHAGEN CONTROLLER
Indicates work required
to ccd controller
Compliant to
requirements
Indicates work required
to ccd controller
ING to design
around SDSU
Impact on telescope instruments
Time scales (availability)
System philosophy compliance
Just the
controller
Phase II @ end of
year
Supports TV use
Supports Autoguider use
Yes but is mute!
Difficult
Supports Scientific CCDs
Other detector cabable
Infrared detector capable
Visible detector capable
8K x 8K SupportSeperate code for
each ccd
Off the shelf for HAWAII
now and future
ccds
COPENHAGEN CONTROLLER
Indicates work required
to ccd controller
SDSU CONTROLLER
Guidelines for development
comparison
Designed in
Phase I, phase II systems board
compatible - build to suit task
System already in use andf
availa ble
autonomus
readout
Fast and interactive
8K x 8K capable. Sequencer
code easily maintained
Under development for
NOT
now and future
ccds
Compliant to
requirements
SDSU CONTROLLER
Indicates work required
to ccd controller
Specific requirements for scientific
CCD controller comparison
Temperature control
not
compatible
Preflash capabillities
Shutter control
not provided
Not
compatible
Time stamping
Binning capabilities
requires specific
sequencer pgm.
Not
provided
Windows capability
Readout speed
Linearity
Dynamic range
requires specific
sequencer pgm.
link speed limited (2
Mpix gross)
< 1 lsb
16 bits
Input sensitivity
Bias voltages
missing 4 (of
16)
Requires
preamp rebuild
Horizontal clocks
Limited to +/10v
4 output channels
Chip formats supported
Vertical clocks
Compliant to
requirements
limited to +/10v
4 boards required
8K x 8K SupportSeperate code for
each ccd
COPENHAGEN CONTROLLER
Indicates work required
to ccd controller
built in to ING
requirements
built in to ING
requirements
Hardware &
software
Fully compliant +
pressure sense
common sequencer
code
common sequencer
code
4 Mpix Gross
< 1 lsb
16 bits
existing or new
preamps
3 per clock
phase
individually
programmed
individually
programmed
only two boards reqd
8K x 8K capable.
Sequencer code easily
maintained
Compliant to
requirements
Quality of design
Quality of workmanship
Cost
Built by student
labour.
£ 15K per
system / Paying
for profits .
Commonality Internationally
Commonality on island
Phase I & II not
compatible. No
ING input to
design.
30 + institutes (phase I)
Only systems
on island
COPENHAGEN CONTROLLER
SDSU CONTROLLER
Relevent merit comparison
£ 11K + Design share
Built under sub contract
from industry
Sequencer independent of
control / ING input to
specs / Danish technology
Only 5
observatories
using this
Common island facilities /
knowledge
A Comparison Of Futures
Detector Controllers for the ING
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