1. SWCam Instrument software DraftV2 10June2014
science data acquisition
housekeeping data acquisition
instrument control
observatory-controlled system
logging
laboratory development support
engineering access
prototyping

2. science data acquisition rates
SWCam
57160 pixels
optimized scan (T.N.)
50 Ethernet readout lines
100MbE
PC(s)
switch(s)
store
1500Hz detector max 1200 pixels / readout line 32 integer bits per pixel read 58Mb/s / readout line max so the 50 readout 100MbE (assuming switch technology multiplexes steady flow rather than requiring buffered bursts at higher rates)
10 Gb or 40Gb switches depending on
cost (including backups) for adequate tested performance
(maximum total 360 MB / sec)
235 MB/s total (scanrate) > % compression > MB/sec to store
All-pixels every second  10 TB / day to store

3. modular pixel data acquisition software
readout lines
recv / compress / send
PC(s)
switch(s)
recv / compress / send
network attached storage
recv / compress / send
idle-mode detector data
uses one or more modules
module parameters
number of readout lines
which readout lines : camera, subcamera, pixels
destination parameters (project specifications)

4. housekeeping data acquisition
SWCam
Central PC
linear amplifiers refrigeration unit temperature probes
store
format project specified
? hardware communication channels
? HK data
HK DETAILS
HK DATA RATES
description…

5. instrument control SWCam SWCam Central PC data acq switch PC(s)
science data acquisition control
data acq
PC(s)
switch
detector readout calibration
refrigeration unit ?
? readout control on same Ethernet cable (MAKO yes)
description…
? other hardware communication channels

6. observatory-controlled system
SWCam control PC
OCS instrument network
Controlled System Agent
HK monitor update
commands executor
description…

7. logging especially needs more
OCS instrument network
Controlled System Agent
HK monitor update
local
status/events
ASCII
log
local data acquisition network
subsystems status/events
description…

8. laboratory development support
SWCam control PC
C platform
Python PyQt platform
(local GUI)
Internet
(North America)
commands interpreter
SWCam control
custom low-volume protocol, pixel data as required
Diagnostics view
Detectors view
HK view
description…

9. telescope control added to previous slide
engineering access
OCS script injection
SWCam Central PC
CCAT network
internet
(world wide)
Python PyQt platform
commands interpreter
telescope control
SWCam control
Detectors
telescope control added to previous slide
Diagnostics HK
pixel data compressed, perhaps jpeg or tiff capability

10. prototypi ng TEST 1 TEST n 1GbE 10GbE RHEL VMs (ccatSWCam) VM
hardware loop-back 1Gb Ethernet
data generator / readout system
RAM resident data 
switch VM
RHEL
RAM  compression  RAM 
compression 
10GbE
timing results
internal drives
-or- network attached store
description…
description…