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Interpreting Console Messages

If you have a console, you may see these messages:

There may also be messages from the system that are unrelated to the satellite ingest process, for example disk error or full disk.

Image Started

A line similar to the following appears on the console at the beginning of each new transmission. Its components are defined in the table below.

1998.174.033409:pdus7.1998.170.0330.AIW image started
 
  a    b    c      d     e   f   g    h

Field Key

Definition

a-c

year, julian day and UTC hour, minute and second the image began being received (note this is the local PC's time)

d-h

file name

d

signal type and satellite number

e-g

century, year, julian day and UTC hour and minute of the image product being received; ccyy.ddd.hhmm

h

a two- to four-character sector and product identifier code; the first character is always the sector identifier and is one of the following:

  • A=full globe
  • B=Europe, North Africa, and the Middle East

the remainder of the code is the product identifier code, which may be one or two of the following:

  • V (visible)
  • I (infrared)
  • W (water vapor)
  • VH (-visible - high resolution)

therefore, AIW in this example means this product contains data for creating full globe (A) infrared (I) and water vapor (W) images

Data Loss

The Data Loss message indicates a transient error. It means a frame was not found where one was expected. A frame is 1/4 or 1/2 of a line, depending on the mode. A Data Loss error usually results in a bad line in the image being received.

Signal Off

The Signal Off message is displayed each time 256 Kbytes of data are received without the three-byte sync code that appears at the beginning of each frame.

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