Search

You can set certain criteria to filter out the data scans you are interested in.

Search Parameters

    - freq xxx.xx
            Limit the search frequency to xxx.xx. (In GHz) Frequency will be considered a match if the scans frequency 
            equals freq +/- delfreq.  (See next command) 'freq -' will reset the search freq to All.

    - delfreq xx.xxx
            Delta freq to use in the frequency search. (In GHz)

    - source object
            Limit the search to object.  (Case insensitive) 'source -' will reset the search source to All.

    - bscan bbbb
            Limit the search to scan numbers >= than bbbb.  'bscan -' will reset bscan to 0.0.

    - escan eeee
            Limit the search to scan numbers <= than eeee.  'escan -' will reset escan to 50000.0.

    - date yyyy.mmdd
            Limit data reduction to scans taken on the date specified. Example: 2016.0323 shows only scans taken on
            March 23rd, 2016.

The following three backend matching terms are mutually exclusive:

    - feed x
            Limit the search to IF x. (1 – 4 ) 'feed -' will reset the search to All IF's.

    - backend string
            Limit the search to backends matching the string; wildcards allowed. i.e. F1M-HU,  F1M-VU, F1M-?U, F1M-*

    - bkres x.xx (MHz)
            Limit the search to backend resolutions equal to x.xx. Example: 'bkres 0.250' uses only the 250 KHz filters.

If you get nothing when a list or accum is requested, then type qreject to list a table of rejections letting you know why all the scans were rejected.

A qreject command is normally executed whenever a accum or list returns empty results.

See Ignore Select Scans for info on ignoring certain scans.