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Commit 5a2996d4 authored by Eric Kooistra's avatar Eric Kooistra
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My planning for Apertif firmware with Redmine numbers per System Release.

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# Arts
Done) Create single element beam mapping for Arts SC4 and apply in dish_command.sh
#1274) Arts SC1 beamlet selection for CB 0 also seems to require CB 1
#1300) Subband bandpass correction after the channel filterbank in Arts SC4
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# SR2 : Fringe stopping
# - 8 dishes
# - single element beams
# - 130 MHz BW
#1298) Complete fringe stopping documentation
#1101) Switch to do transpose in the beamformer for Apertif (default) or not (for Arts SC1) in FN beamformer.
Pieter verifies dp_switch,vhd. It is missing do_xonoff.vhd at the inputs to support input stimuli that do
not listen to xon themselves.
Done) #1098, #1105 : Robust flashing
#1377) Dish output enable per band based on the active correlator boards
Disable of bands should not be necessary, because we specify list of active --tel with main.y, however
the MAC software assumes that all active dish ouptuts should participate in the measurement.
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# SR3 : Compound beams 1 feb
Done) Replace test_arts_0.py by DESP python code: setup_arts.py
- Test with setup_arts.py on dish 7 did detect the pulsar (19 oct):
> ssh lcu-rt7 -X "python $RADIOHDL/applications/apertif/commissioning/setup_arts.py --scheme arts_sc1 --unb 0:7 --bn 0:3 --fn 0:3 -v 3 --pol 0,1 --cbeams 0,1 --globalsp 56,56"
Done) #1275: Debug filterbank image (to have same image for Arts SC1 instead of Hajee's image r16579)
*) Use new common FB and BF image for Apertif and Arts
*) #1038: Fringe stopping sign flip in firmware (not sure whether it is active in BF r17352)
*) #1230: Support PAF calibrator using BF BST
*) Clarify beamlet mapping
Done: Implement full beamlet mapping control in Python (pi_apertif_system.py)
Done: Program R_beam to support Arts SC1 for single pixel beam in CB 0 (setup_arts.py)
Done: Program R_beam to support Arts SC4 for single pixel beam in CB 0:39 (setup_arts.py)
- Use Apertif R_beam setting and program R_beamout to support Arts SC4
- For SC4 R_rotate is needed to balance the output load per CB on the 40G link (section 7.4.3),
for SC3 this R_rotate is not needed (section 10.3.3).
- Add support for Arts SC4 offload balancing in R_beamout setting by rotating the selection per FN
- Readback mapping from board
*) Make Arts beamlet mapping independent of Apertif
- Add R_beamout transpose function in Apertif BF after R_beam but before T_int_x transpose
to support SC3. When available this R_beamout can also be used for SC4 and then it can
include R_rotate
- Inverse R_beamout function on beamlet indices at Apertif X output, to transparently
support SC3.
*) #1100: ADU lock robustness
- from FB r17502 (8 aug) the ADU handler once in lock, keeps this ADC sample phase forever
*) #893 : FPGA register map
*) Flagging for failing links, RFI ? etc.
- Failing links during observation can be handled by MAC
- RFI is detected by astronomers at visibility level.
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# SR4 : Include dish C, D
*) BF output Fiber length compensation in FN beamformer
- This can be set via pi_dp_fifo_monitor.py in dish_commands.py
*) #895 : PPS cable length compensation in BN filterbank
- This can be set via pi_common_pulse_delay.py in dish_commands.py
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# SR5 : Online calibration (Start of Apertizer observations)
# - 200 MHz, 37 CB, 12 dishes
*) Quantisation
- SST
- BST
- dish beamlet output
- Visibility output
*) Channel filter
- Enable channel FIR filter in Apertif X
- Verify FIR coefficients
- Decide on subband and channel FIR filter impulse response
*) End to end WG to DW test
- VHDL simulation of the full chain (not feasible, instead use end to end WG - DW tests on hardware)
- Overwrite statistics before reading to ensure fresh data
- Plot BST per CB
- Compare SST with BST
- Verify dish XST
- Verify visibility output order
*) Correlator synthesis @ 200 MHz
- channel FIR filter
- 6 bit mode
- Channel offload for Arts SC3
- Recover beamlet numbering via inverse R_beamout on beamlet indices
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# SR-6 : Dual polarization
*)
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# SR-7 : Full 300 MHz BW and 40 CB
*) Clean up generic dependencies to prepare for supproting 6 bit mode.
*) 6-bit mode
- system dynamic range reduces, this can first be verified in 8 bit mode
- parameter ripple through in firmware to support both 8bit and 6bit mode (but not in the same image)
- verify pre-transpose
- repack functions for BF out and X in
- X payload size on mesh increases but will still fit (6/8 * 240/176 = 1.0227)
- Verify X output load balancing to DW
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# SR-8 : Anti aliasing filter
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# SR-9 : Start of Apertif surveys
*) Tasks from commissioning and unforeseen work
- Support MAC
- Documentaion update
- Init scripts
*) Uniboard temperature readings (not needed, because cabinet temp and weather station is used for that)
- FPGA temp can be read out with util_unb_sens.py -n 1 --> strangely FPGA temp range e.g. between -2 and +53 degrees
- ETH temp can be read out with util_unb_sens.py -n 2 --> ETH temp range e.g. between 35 and 40 degrees
- ADU temp can be read out with util_adu_i2c_commander.py -n 0 --> strangely they all read 0 degrees (ask Gijs)
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# SR-10 : Commensal Apertif and Arts SC3 observations
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