Computer notes from tests on 28.7.03

*** Moxa NPort
minicom -pttys4  -- get to Moxa port  
npadm		 -- start server
192.168.0.51	 -- lab IP
255.255.254.0	 -- lab mask
/etc/hosts	 -- list of name to IP mapping

*** Ports on Saturn:
0     -- back panel
1-4   -- cyclades
5-8   -- N-port Moxa

*** HPIB query
gpib pad=4 sid=8 cmd='*IDN?' nret=100
- pad is GPIB address
- sid is serial port no (here Moxa #4)

*** Producing a spectrum
>cdwd 
  - change to working directory

>cwsigs freq=3500:8000:10 power=-13 sigsfile=sig-wasp1.fits beaddr0=3
  - for cylades port #3

>cwsigsinvert sigsfile=sig-wasp1.fits afile=afile-wasp1.fits
 cffile0=wasp1inv
  - all on one line
  - takes default svdparam=0.07

>cwsigsinvert help=h

>saoimage afile-wasp1.fits
  - to look at cwsigs file as image

>fitsccd afile-wasp1.fits - | ccdprint - x= y= > tab2
  - should produce an ASCII matrix with NAXIS2 rows (lags) with NAXIS1
  columns (freqs), or (BkIV, p. 82, 4.6.02)

>fitsccd afile-wasp1.fits - | ccdprint - x= y= newline=t > tab1
  - which should produce one  long series of numbers (BkIV, p. 82, 4.6.02)

*** Take total power data
>waspset beaddr0=3 fitsfile=wasp1-data.fits
>waspset cffile0=wasp1inv
>zero
>totpwr exp=1 classout=t 
  - puts into classdat.dat, the default class data file
  - but how does this fit with fitsfile=wasp1-data.fits above?

*** For amplitude cal:
>totpwr cal=tcal repeat=1
  - use cal scheme with hot/cold
  - no prompt to repeat after 1 cycle

*** Look at fits file
>fv 3406.fits 

*** Look at data with CLASS

Start class with 
> class

Then:
dev xlandscape white  (if needed, xterm)
fi waspdat 	(file in filename[.dat])
fa 		(find /all; also find)
list		(list)
get 2743	(get scannumber)
sm b 4		(smooth box 4 -- back to proper sampling)
pl		(plot)

Once the data file is open, type

new		(add new files to list)
fa		(find all)
list		(list)

Another useful command for stepping through data is

gn 		(get next scan)

To view a series of scans from number 2575 to 2560,

for i 2575 to 2560
gn
sm b 4
pl
pause 		(type cont to continue)
next i

To plot one spectrum on top of another use
  spect		(spectrum)
for the second and subsequent spectra.

To add spectra from different spectrometers:
  set align v c
  sum

To set limits on the plot use

mx lowerlim upperlim	(mx = set mode x)
my lowerlim upperlim    (my = set mode y)

To get back to autoscaling

mx
my
 
CSO interface notes, 1.98

*** Patch panel at rack bottom, Rx cabin:
Upper conns - to backend room patch panel
Lower conns - to cass focus patch panel
CIC analog in 3; patch panel 15; Chicago Az off 1 (Nod A)  
CIC analog in 4; patch panel 16; Chicago Az off 2 (Nod B)
PWC TTL in     ; patch panel  3; chop in          (chop)

*** Software setup
UIP> secondary throwinarcsec frequencyinHz
UIP> chicago 60 -60

*** Chopper setup
Best guess (12.1.98): 12.1 mV/arcsec
Set up with digital scope on internal mode, match in external mode
Switch to "TTL" 
Adjust chopper with LHS offset and gain knowbs on chopper box

CSO interface notes, 8.03

*** Chicago mode connections
In AOS room, two possibilities:
  On terminal block, 9 and 10 are off1 and off2; 17 is signal gnd
  These connect to in 1 and 2 on optoisolator box, an alu box with 8 BNC 

*** Chopper setup
New chopper controller, but still set up as before.  

*** CSO observing 

UIP> source
     ra 053243.3   (no spaces)
     dec -05...

UIP> planet moon   (goes to Moon)

UIP> za 30         (go to zenith angle 30)

UIP> cal /in_blade
         /out_blade

UIP> verify /alt irc10216  (a "try")

UIP> obs irc10216          (go to source)

UIP> data filename

UIP> oo			(on-off; position switch)

UIP> chicago 60 -60     (set chicago mode)

UIP> secondary 120 .25  (set chopping secondary)

UIP> chop		(chopped obs)


*** GREG

>exa RY		-- shows that  y double[326]  (also RX)
>def real raw[326]   -- define new variable raw
>let raw y      -- load raw 
>let y raw-zer  -- operation
    
*** Shipping crates

Aluminum boxes are 31" W, 23" D, 28" H

*** Pointing and focus for wideband 230 GHz
(S. Widicus, 4.1.05)

FAZO = -80.1
FZAO = -15.1
focus offset = -0.7
y pos offset = 0.3