J Ds NH 3 Setup Notes
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Setup for NH3 Observing at Mt. Pleasant:
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login observer on mills, smerd, operator on hobart
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0. Set top Rhode and Schwarz oscillator to 821.3 MHz, 9.0 dBm
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1. Select K band receiver numb 8 on laptop (use stoatn for startup)
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1a. calu -m sam26m on smerd (main control sun workstation)
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2. x,y,z = 55,141,5 platform receiver position
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3. third Rhode and Schwarz (smx) 658 MHz level 10 dbm for (1,1)
630 (2,2)
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IF attens 23 dB, 20 dB switched attens 15 dB, 0 dB
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4. set agilent: on Hobart do : rs.tcl, double click agi1, enter:
rf 18.0 ghz
lev 16. dbm exit
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5. setup das: new program cor32000.pro, load, setup...
new setup das: new program cor16000.pro, load, setup...
do s for setup after loading new program!!
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reboot correlator, then do setup again...
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6. Do scan on Jupiter, Venus, Orion ... (see Bruce commands below)
To get planet position, use miriad task planets
enter epoch, planet name, go
eg. epoch=06jun17:09:30 (UT date and time hh:mm)
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7. setup Hobart: clear all running programs, get a couple of empty terminal
windows.
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cor
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(this command opens two text windows, two GUI's for correlator)
on each GUI, find config file (e.g. das_xxyy_32_2048), select it
enter BW 32.0 MHz in small BW text window on GUI
go, stop, go, stop
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meanwhile, enter c/r for /xs pgplot device on spc window
when correlator is running, enter
sel 1,2
to see both bands
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(be sure to stop correlator before starting control program)
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8. If necessary, make command file for correlator on hobart, using .list
file as in this directory
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cd corsched
./corsched.pl
(enter list file name, output file name (same.out), park at end)
edit the .out file to add lines with
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opacity (for skytip)
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fc
fo auto.rpf (for closing and reopening file)
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put these before line with "source" command
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at end put "park"
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The skydip output goes in a bruce file in /scratch/bruce on smerd or mills
It takes a long time to list all files in this directory.
Names are structured as : bruce_06168.log (2006 day 168)
b0616809.597 (continuum data)
Bruce log has entries with time stamp like: 2453903.889074
(JD and fraction of a day, UT=0h is .0 day number)
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analyze the skydips using ~sellings/progs/perl/opacity.pl --input=filename
or ...... ....... ........ ..... --help
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9. start observing with command on Hobart (empty window)
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/usr/local/pkg/correlator/survey_ng -a sys26m -c hobart -i 0 -n 2 -r rakbus -s sam26m -f jd-gal21.out
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(note the output file from corsched.pl is the last thing on this one line
command)
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There are some little executable files with this command for easy starting
in directory corsched on Hobart, named jd-gal21, jd-gal5, etc.
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There are lots of .list and .out files also in corsched, with names
like amm-gal21.out, amm-gal21.list, etc.
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note also .sch files (setup files with frequency, bandwidth, etc)
like amm11.sch etc in corsched directory on Hobart.
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10. The rpfits file goes to /obs/data on smerd
Bruce commands for test continuum scans on planets:
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./KILL_BRUCE.pl (from observer on mills, to kill any bruce job still running)
in /u/observer/
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abort all vdesk jobs
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on smerd: first open a window and expand it to be full width, most of height
of screen
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cd /obs/develop/sol/mapping
./bruce -f 4
c/r
c/r (defaults for rakbus, sys26m, etc.)
source jupiter
left 13:03:06.72 (whatever ra)
right -5:42:39.9 (whatever dec)
coordinate mode j2000
drvon
(wait a while until the drives are on)
slew
numberchannels 2
tsys
(record result...)
length 0.5
rate 0.5
sample spacing 0.005
frequency 1 23694.
frequency 2 23694.
direction left
scan
.....
direction right
scan
.....
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when done:
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quit
(must exit before starting correlator control program)
Bruce commands for test continuum scans on planets:
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./KILL_BRUCE.pl (from observer on mills, to kill any bruce job still running)
in /u/observer/
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abort all vdesk jobs
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on smerd: first open a window and expand it to be full width, most of height
of screen
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cd /obs/develop/sol/mapping
./bruce -f 4
c/r
c/r (defaults for rakbus, sys26m, etc.)
source jupiter
left 13:03:06.72 (whatever ra)
right -5:42:39.9 (whatever dec)
coordinate mode j2000
drvon
(wait a while until the drives are on)
slew
numberchannels 2
tsys
(record result...)
length 0.5
rate 0.5
sample spacing 0.005
frequency 1 23694.
frequency 2 23694.
direction left
scan
.....
direction right
scan
.....
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when done:
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quit
(must exit before starting correlator control program)
wiring : Rack 3, panel 1 E and W to panel 5 amplifiers, to panel 4 attenuators to rack 6 panel 4 RF
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SMX R+S synthesizer rack 4 panel 3 (658 MHz, 7.0 dBm) to rack 5 panel 5 "IN", splits two outs to both "LO" rack 6 panel 4
note: use non-inverting 1056 MHz setting on rack 6 panel 4
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Rack 6 panel 4 IF to lower 96 MHz filter bnc, rack 6 panel 2. Upper bnc to 3A, 3B inputs, rack 6 panel 1
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rack 3 panel 10 6A, 6B to rack 2 panel 2 inputs (left), outputs (right) to rack 3 panel 8 RF in's
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rack3 panel 8 DC out's to panel 9 1A, 1B.
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rack 1 bottom blue panel left two into panel just above - tangle of connectors to rack 2 panel 7 (digital interface)
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for remote communication with the cor (correlator control) program on hobart:
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Login to hobart and run the program dscom in an xterm.
(it can't run at the same time as survey_ng)
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To stop the correlator cycling :
stop
To start the correlator cycling :
go
To close a file :
fc
To reconfigure the correlator :
config .
When finished with dscom
quit
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The stop, fc and config commands return a response and you should wait for
them before quitting.
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