Keywords: pdbi-trouble

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## The POINTING micro

It may be necessary to log on the POINTING micro for checks in case of anomalous behaviour.

The normal state can be check by typing `procs -e` to check the running processes. It should say:

    ant51_s: procs -e
     Id PId Grp.Usr  Prior  MemSiz Sig S    CPU Time   Age Module & I/O
      2   0   0.0     128    4.75k   0 w        0.00 159:19 sysgo <>>>term
      3   0   0.0     128    2.00k   0 s    37:20.78 159:19 ifman
      4   0   0.0     128   20.25k   0 s     2:32.27 159:19 routed <>>>nil
      5   0   0.0     128    2.00k   0 a     2:17.03 159:19 sockman
      6   2   0.0     128    6.75k   0 w        0.00 159:19 shell <>>>term
      7   6   0.0     128    6.75k   0 w        0.13 159:19 shell <dd >>>term
      8   0   0.0     128   62.75k   0 e       29.00 159:19 nfsc <>>>term
      9   7   0.0     128   12.00k   0 e        0.01 159:19 ftpd <>>>nil
     10   7   0.0     128   12.00k   0 e        0.44 159:19 telnetd <>>>nil
     11   7   0.0     128   15.50k   0 s        0.03 159:19 tsmon <>>>term
     12  13   2.2     128    6.75k   0 e        0.16 75:15 shell <>>>pks00
     13   0   0.0     128   22.00k   0 e        0.25 75:15 telnetdc <pks00
     14   0   0.0     128   11.25k   0 e        1.53 159:19 rmshd <dd >pipe >>nil
     15   0   0.0     128    9.50k   0 e 10:37:06.41 159:19 ev_it1s <dd >>>nil
     16   0   0.0     128   11.25k   0 e       26.77 159:19 ev_itsync <dd >>>term
     17   0   0.0     128   11.25k   0 e        0.02 159:19 ev_itincr <dd >>>term
     18   0   0.0     128   11.25k   0 e  1:27:55.70 159:19 tcpip <dd >>>nil
     19   0   0.0     128   11.25k   0 s  1:25:13.52 159:19 subxmit <>>>nil
     20  21   0.0     128    6.75k   0 w        0.18  0:00 shell <>>>pks01
     21   0   0.0     128   22.00k   0 a        0.18  0:00 telnetdc <pks01
     22  20   0.0     128   18.25k   0 *        0.36  0:00 procs <>>>pks01

Programs `ev_it1s, ev_itsync, ev_itincr` (the time keepers), `tcpip` (which handles communications with BURE1), `subxmit` (which communicates with the RECEIVER micro program `subrecv` to control the subreflector), and `rmshd` (which support the `rmsh` commands from BURE1) should all be active.

Program `user` can display all the status bits of the antenna. Program `UT` displays the running UT and LST times. Program `set_time` can be used to re-synchronize the micro and reset the UT time. LST will become good again only after a command has been send by BURE1. Program `incr` can be used to re-initialize the encoders/subreflector. Program `dmp` dumps the antenna common.

Synchronisation problems may require to have a look at the ``history'' of the synchro errors. They are logged in files named `sync.ant11, sync.ant21, etc...`. These files should be small. To check their size, use:

    ant51_s: chd /dd/ANTENNA
    ant51_s: dir -e sync.*
     Owner    Last modified  Attributes Sector Bytecount Name
    -------   -------------  ---------- ------ --------- ----
      0.0     96/07/16 0314   ------wr    1B51       150 sync.ant11
      0.0     96/07/16 0230   ------wr    1B50       125 sync.ant31
      0.0     96/07/16 0230   ------wr    1BC0        50 sync.ant41
      0.0     96/07/16 0230   ------wr    1B52        50 sync.ant51

The size (Bytecount) should be less than about 2000 bytes. Otherwise, too many timing errors have appeared: check the TU01 time bus. The sync.ant files contain the date and time of the error:

    ant51_s: list sync.11
    Tue Jul 16 09:31:42 1996
    Tue Jul 16 09:31:43 1996
    Tue Jul 16 10:15:27 1996
    Tue Jul 16 10:15:35 1996
    Tue Jul 16 10:15:41 1996
    Tue Jul 16 10:15:47 1996

If the file size keep increasing, the antenna are no longer properly synchronized. Use command `set_time` to re-synchronize them and reset the UT time. If the files get too large (Bytecount ), delete them using command

    ant51_s: del sync.ant*

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