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24-02-89/Smanual
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » CEEFAX disks » telesoftware14.adl |
| Filename: | 24-02-89/Smanual |
| Read OK: | ✔ |
| File size: | 2D7F bytes |
| Load address: | 0000 |
| Exec address: | FFFFFFFF |
File contents
User Guide to the BBC Telesoftware / Met Office Satellite Data Service
======================================================================
Introduction
============
The satellite image data service is a joint venture between the BBC and
the Meteorological Office. The aim is to provide telesoftware users with
the latest weather satellite data from the MeteoSat satellite.
The Meteorological Office receive such files regularly as part of their
weather forecasting material. These files are sent to the BBC's weather
department computers for use in the BBC weather programmes.
BBC Telesoftware intercept some of these files, take copies of the data
received from the Met Office, process them, then make them available a few
hours later as Telesoftware files.
Data Format
===========
The format of the data broadcast is based on the format used by the Met
Office, but is not identical. (This, of course, is not the format of the
data as transmitted by the satellite, as the Meteorological Office carry
out a great deal of enhancement and compression processing to the original
data before passing it on.) If you wish to use the data from these files
in any way other than to create computer screen displays, you will need a
copy of the data format protocol which is available separately.
Receiving The Satellite Data (Downloading)
==========================================
For the BBC micro, the program "SatLoad" gives access to the currently
available files within the satellite data service. For IBM machines, a
similar utility, SATLOAD.EXE, is provided with the BBC approved teletext
card - if you do not have this, please contact your adaptor card supplier.
To use, type CHAIN "SatLoad" (BBC Micro) or just SATLOAD (IBM pc). The
software will search for the catalogue file. To do this, it looks at the
TSDP (Television Service Data Packet) for the main index page number, then
follows link 5 of the main index page to find the main telesoftware
catalogue, where link 5 again will lead to the Satellite Service
catalogue. Under normal circumstances, the computer will find the
Satellite Service catalogue within about 15 seconds. Once found, details
of each file available in the service will be displayed.
During the time the system is searching for the correct catalogue, the
prompt "L = Latest image" is displayed. If, during this time, the "L" key
is pressed, the program will search for and download the latest available
satellite image data, only displaying the catalogue details when this file
has been saved to disc. There is no response by the computer when "L" is
pressed, but it will have been noted! If you prefer to select the files
manually, do not press "L" - just let the program receive and display the
catalogue entries in the normal way. In either case, the catalogue will be
found and displayed for a (further) selection.
Files are presented in a similar format to the normal telesoftware
catalogue, and the cursor up and down keys should be used to select the
required file. If more files are available than will fit on the screen, a
message indicating the total number of available files is displayed, and
pressing the down arrow will reveal the remainder.
To download a file, move the bar to the required file, then press RETURN
or ENTER. Downloading is fully automatic, following which the catalogue
will be displayed again for further selections. If no further files are
required, press ESCAPE. Confirmation of this is then required by pressing
ESCAPE a second time.
The downloaded data files will remain on your currently selected disc.
Remember, however, these files are not "screen dumps" but are data files
based on the data received from the satellite.
Converting The Data Into a Computer Screen
==========================================
Possibly the most useful way of using the satellite data is to create a
computer screen image from it. Our service includes software to do this on
three types of micro - the BBC Microcomputer (with or without the 6502
second processor); The Acorn Archimedes; and any IBM compatible pc.
"Display" is the BBC Micro (models B, B+, and Master) version, to create
mode 2 screen images. The routine takes some time to complete, but will
generate a colour display showing cloud position and thickness, with each
colour representing a different cloud thickness. This is best viewed on a
monochrome monitor, where each colour is represented as a grey level.
Note, however, that the BBC Micro, and some IBM display cards, are
incapable of producing the fine resolution available from the data files,
so accurate studies of cloud thickness are best made using the original
data file rather than the screen image.
"ArcDisp" is a similar routine for the Acorn Archimedes computer. The
cloud thickness is more accurately portrayed as one of 16 grey levels, and
a higher resolution is possible than on the BBC Micro.
"SATDISP.EXE" (available shortly) will create a screen display on an IBM
pc or 100% compatible, automatically giving the maximum possible
resolution and picture size with the display device present.
A VGA board will give the best results, but most other display devices are
catered for, including EGA, CGA, Amstrad, Hercules and some others. As
with the BBC Micro, colours are used to represent the different levels of
cloud thickness, so a monochrome display will show these more effectively.
However, most monochrome monitors are only for use with monochrome display
adaptors which are incapable of the high-resolution graphics needed!
When complete, the display will be saved to disc as a screen dump, ready
for re-loading when required without having to use the display program
again.
Each screen is saved under a unique filename comprising the 7 digits of
the Julian Date integer (the least significant 4 digits for BBC DFS
systems, and the least significant 5 digits for IBM/MSDOS systems), plus
the first 2 digits of the Julian Date fraction. This is then prefixed with
a single alphabetic character relating to the area covered by the image.
Note the filename is derived from the full Julian Date, and not the
Modified Julian Date more commonly associated with computing applications.
In this way, each screen can be easily identified and sorted into order
within other utility software. It may be worthy of note that the full
Julian date (integer part) increments at 12:00 midday, whereas the
Modified JD increments at 00:00 (midnight).
IBM and MSDOS files will also be given the filename extension of .SCR to
signify a screen image.
For example, the Julian Date for Midday, Wednesday 15 February 1989 is
2447573.0000. Files created for this day would be:
Midday Atlantic: 18:00 European:
IBM: A4757300.SCR E4757325.SCR
BBC: a244757300 e244757325
BBC (DFS): a757300 e757325
Utilities
=========
There are many uses for both the satellite data and for the screen
displays. Some of these have been catered for in utility files, and we
hope users of the service will define other areas and be able to offer
other utilities for distribution via Telesoftware.
a. SatSeq (BBC micro)
---------------------
"SatSeq" is a BASIC program for the BBC Master computer, and allows a
quantity of screen displays from a disc or discs to be displayed in date
sequence.
To use the program, LOAD "SatSeq", then insert the disc or discs holding
the screen images. RUN the program, entering the appropriate disc drive
information as requested. If no drive is specified, drive 0 will be
assumed by default. The program will find all the satellite screen images
on the discs, sort them into order, then cycle through each one in turn.
Press f0 to toggle on or off an automatic cycling routine - displaying
each successive screen in turn starting from the currently displayed
image. The time interval between displaying each screen is set to 0 by
default, but can be altered by changing the parameter near the start of
the program. Alternatively, using the cursor keys (when not in automatic
display mode) will step through the images individually:
Up Arrow = Go to start of sequence
Down arrow = Go to end of sequence
Left arrow = Back one image
Right arrow = Forward one image
<RETURN> = Quit
These functions may be re-allocated to other keys if preferred, by
altering the variables near the start of the program.
It would be logical, particularly when using ADFS, to save the screen
images in a specific directory, for example: $.SatScreens. The particular
directory searched by the program must be the same for each disc
specified. It is, by default, the root directory, but may be changed by
altering the string allocated to the variable 'directory$' near the start
of the program listing.
"SatSeq" can be modified for use on a BBC Model B or B+ computer (DFS
only). Load the program (version 2.12), then delete lines 60, 70, 560,
570, and 880 to 1150 inclusive. This will give enough room for the
procedures to operate, but with large numbers of images for display you
may also need to lower the value of PAGE to &1900 before use. These
modifications are required solely due to the lack of available memory on
these older computers.
2. SatShow (BBC micro)
----------------------
"SatShow" is another BASIC program for BBC Master machines, Archimedes, or
Model B or B+ with shadow screen upgrade, and will display the file header
information from any specified data file (not screen image). The format
and content of the file header is detailed in a separate document. For IBM
pc's, the header information to each file is detailed when "SATDISP.EXE"
is run.
Using The Service With Other Computers
======================================
The Satellite Data Service is fully compatible with almost any make or
type of computer with a disc drive (or other storage medium that supports
Random Access file handling) and a suitable graphics display mode. A
teletext adaptor, capable of correctly receiving and decoding
telesoftware, is required, and software to find and interpret the
catalogue and to display the received data file, must be written if the
computer's operating system is not compatible with BBC or IBM/MSDOS
computers.
Copyright
=========
Copyright exists on all data, programs, text or other files broadcast by
the BBC. The situation is as follows (the term "program" includes any
computer readable file - text, data, software, or binary file):
(1) Domestic users of a program broadcast on CEEFAX may:
- make two copies only for private purposes.
- adapt or modify it for private purposes but not for sale.
(2) Educational and training institutions and agencies may:
- record and use the program for their own educational training
purposes but not for sale.
- adapt, modify and distribute a program for their own educational and
training purposes, but not for sale.
(3) No part of a program may otherwise be reproduced, stored in a
retrieval system or transmitted in any form or by any means, without
the prior permission of the BBC, except in accordance with the 1956
copyright act.
--------------------------------------------------------------------------
(c) BBC tv 1989 Jeremy Brayshaw : 24 February 1989
--------------------------------------------------------------------------
00000000 0d 0a 55 73 65 72 20 47 75 69 64 65 20 74 6f 20 |..User Guide to | 00000010 74 68 65 20 42 42 43 20 54 65 6c 65 73 6f 66 74 |the BBC Telesoft| 00000020 77 61 72 65 20 2f 20 4d 65 74 20 4f 66 66 69 63 |ware / Met Offic| 00000030 65 20 53 61 74 65 6c 6c 69 74 65 20 44 61 74 61 |e Satellite Data| 00000040 20 53 65 72 76 69 63 65 0d 0a 3d 3d 3d 3d 3d 3d | Service..======| 00000050 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================| * 00000090 0d 0a 0d 0a 0d 0a 49 6e 74 72 6f 64 75 63 74 69 |......Introducti| 000000a0 6f 6e 0d 0a 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |on..============| 000000b0 0d 0a 0d 0a 54 68 65 20 73 61 74 65 6c 6c 69 74 |....The satellit| 000000c0 65 20 69 6d 61 67 65 20 64 61 74 61 20 73 65 72 |e image data ser| 000000d0 76 69 63 65 20 69 73 20 61 20 6a 6f 69 6e 74 20 |vice is a joint | 000000e0 76 65 6e 74 75 72 65 20 62 65 74 77 65 65 6e 20 |venture between | 000000f0 74 68 65 20 42 42 43 20 61 6e 64 0d 0a 74 68 65 |the BBC and..the| 00000100 20 4d 65 74 65 6f 72 6f 6c 6f 67 69 63 61 6c 20 | Meteorological | 00000110 4f 66 66 69 63 65 2e 20 54 68 65 20 61 69 6d 20 |Office. The aim | 00000120 69 73 20 74 6f 20 70 72 6f 76 69 64 65 20 74 65 |is to provide te| 00000130 6c 65 73 6f 66 74 77 61 72 65 20 75 73 65 72 73 |lesoftware users| 00000140 20 77 69 74 68 0d 0a 74 68 65 20 6c 61 74 65 73 | with..the lates| 00000150 74 20 77 65 61 74 68 65 72 20 73 61 74 65 6c 6c |t weather satell| 00000160 69 74 65 20 64 61 74 61 20 66 72 6f 6d 20 74 68 |ite data from th| 00000170 65 20 4d 65 74 65 6f 53 61 74 20 73 61 74 65 6c |e MeteoSat satel| 00000180 6c 69 74 65 2e 0d 0a 0d 0a 54 68 65 20 4d 65 74 |lite.....The Met| 00000190 65 6f 72 6f 6c 6f 67 69 63 61 6c 20 4f 66 66 69 |eorological Offi| 000001a0 63 65 20 72 65 63 65 69 76 65 20 73 75 63 68 20 |ce receive such | 000001b0 66 69 6c 65 73 20 72 65 67 75 6c 61 72 6c 79 20 |files regularly | 000001c0 61 73 20 70 61 72 74 20 6f 66 20 74 68 65 69 72 |as part of their| 000001d0 0d 0a 77 65 61 74 68 65 72 20 66 6f 72 65 63 61 |..weather foreca| 000001e0 73 74 69 6e 67 20 6d 61 74 65 72 69 61 6c 2e 20 |sting material. | 000001f0 54 68 65 73 65 20 66 69 6c 65 73 20 61 72 65 20 |These files are | 00000200 73 65 6e 74 20 74 6f 20 74 68 65 20 42 42 43 27 |sent to the BBC'| 00000210 73 20 77 65 61 74 68 65 72 0d 0a 64 65 70 61 72 |s weather..depar| 00000220 74 6d 65 6e 74 20 63 6f 6d 70 75 74 65 72 73 20 |tment computers | 00000230 66 6f 72 20 75 73 65 20 69 6e 20 74 68 65 20 42 |for use in the B| 00000240 42 43 20 77 65 61 74 68 65 72 20 70 72 6f 67 72 |BC weather progr| 00000250 61 6d 6d 65 73 2e 0d 0a 0d 0a 42 42 43 20 54 65 |ammes.....BBC Te| 00000260 6c 65 73 6f 66 74 77 61 72 65 20 69 6e 74 65 72 |lesoftware inter| 00000270 63 65 70 74 20 73 6f 6d 65 20 6f 66 20 74 68 65 |cept some of the| 00000280 73 65 20 66 69 6c 65 73 2c 20 74 61 6b 65 20 63 |se files, take c| 00000290 6f 70 69 65 73 20 6f 66 20 74 68 65 20 64 61 74 |opies of the dat| 000002a0 61 0d 0a 72 65 63 65 69 76 65 64 20 66 72 6f 6d |a..received from| 000002b0 20 74 68 65 20 4d 65 74 20 4f 66 66 69 63 65 2c | the Met Office,| 000002c0 20 70 72 6f 63 65 73 73 20 74 68 65 6d 2c 20 74 | process them, t| 000002d0 68 65 6e 20 6d 61 6b 65 20 74 68 65 6d 20 61 76 |hen make them av| 000002e0 61 69 6c 61 62 6c 65 20 61 20 66 65 77 0d 0a 68 |ailable a few..h| 000002f0 6f 75 72 73 20 6c 61 74 65 72 20 61 73 20 54 65 |ours later as Te| 00000300 6c 65 73 6f 66 74 77 61 72 65 20 66 69 6c 65 73 |lesoftware files| 00000310 2e 0d 0a 0d 0a 44 61 74 61 20 46 6f 72 6d 61 74 |.....Data Format| 00000320 0d 0a 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 0d 0a 0d |..===========...| 00000330 0a 54 68 65 20 66 6f 72 6d 61 74 20 6f 66 20 74 |.The format of t| 00000340 68 65 20 64 61 74 61 20 62 72 6f 61 64 63 61 73 |he data broadcas| 00000350 74 20 69 73 20 62 61 73 65 64 20 6f 6e 20 74 68 |t is based on th| 00000360 65 20 66 6f 72 6d 61 74 20 75 73 65 64 20 62 79 |e format used by| 00000370 20 74 68 65 20 4d 65 74 0d 0a 4f 66 66 69 63 65 | the Met..Office| 00000380 2c 20 62 75 74 20 69 73 20 6e 6f 74 20 69 64 65 |, but is not ide| 00000390 6e 74 69 63 61 6c 2e 20 28 54 68 69 73 2c 20 6f |ntical. (This, o| 000003a0 66 20 63 6f 75 72 73 65 2c 20 69 73 20 6e 6f 74 |f course, is not| 000003b0 20 74 68 65 20 66 6f 72 6d 61 74 20 6f 66 20 74 | the format of t| 000003c0 68 65 0d 0a 64 61 74 61 20 61 73 20 74 72 61 6e |he..data as tran| 000003d0 73 6d 69 74 74 65 64 20 62 79 20 74 68 65 20 73 |smitted by the s| 000003e0 61 74 65 6c 6c 69 74 65 2c 20 61 73 20 74 68 65 |atellite, as the| 000003f0 20 4d 65 74 65 6f 72 6f 6c 6f 67 69 63 61 6c 20 | Meteorological | 00000400 4f 66 66 69 63 65 20 63 61 72 72 79 0d 0a 6f 75 |Office carry..ou| 00000410 74 20 61 20 67 72 65 61 74 20 64 65 61 6c 20 6f |t a great deal o| 00000420 66 20 65 6e 68 61 6e 63 65 6d 65 6e 74 20 61 6e |f enhancement an| 00000430 64 20 63 6f 6d 70 72 65 73 73 69 6f 6e 20 70 72 |d compression pr| 00000440 6f 63 65 73 73 69 6e 67 20 74 6f 20 74 68 65 20 |ocessing to the | 00000450 6f 72 69 67 69 6e 61 6c 0d 0a 64 61 74 61 20 62 |original..data b| 00000460 65 66 6f 72 65 20 70 61 73 73 69 6e 67 20 69 74 |efore passing it| 00000470 20 6f 6e 2e 29 20 49 66 20 79 6f 75 20 77 69 73 | on.) If you wis| 00000480 68 20 74 6f 20 75 73 65 20 74 68 65 20 64 61 74 |h to use the dat| 00000490 61 20 66 72 6f 6d 20 74 68 65 73 65 20 66 69 6c |a from these fil| 000004a0 65 73 0d 0a 69 6e 20 61 6e 79 20 77 61 79 20 6f |es..in any way o| 000004b0 74 68 65 72 20 74 68 61 6e 20 74 6f 20 63 72 65 |ther than to cre| 000004c0 61 74 65 20 63 6f 6d 70 75 74 65 72 20 73 63 72 |ate computer scr| 000004d0 65 65 6e 20 64 69 73 70 6c 61 79 73 2c 20 79 6f |een displays, yo| 000004e0 75 20 77 69 6c 6c 20 6e 65 65 64 20 61 0d 0a 63 |u will need a..c| 000004f0 6f 70 79 20 6f 66 20 74 68 65 20 64 61 74 61 20 |opy of the data | 00000500 66 6f 72 6d 61 74 20 70 72 6f 74 6f 63 6f 6c 20 |format protocol | 00000510 77 68 69 63 68 20 69 73 20 61 76 61 69 6c 61 62 |which is availab| 00000520 6c 65 20 73 65 70 61 72 61 74 65 6c 79 2e 0d 0a |le separately...| 00000530 0d 0a 52 65 63 65 69 76 69 6e 67 20 54 68 65 20 |..Receiving The | 00000540 53 61 74 65 6c 6c 69 74 65 20 44 61 74 61 20 28 |Satellite Data (| 00000550 44 6f 77 6e 6c 6f 61 64 69 6e 67 29 0d 0a 3d 3d |Downloading)..==| 00000560 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================| * 00000580 3d 3d 3d 3d 3d 3d 3d 3d 0d 0a 0d 0a 46 6f 72 20 |========....For | 00000590 74 68 65 20 42 42 43 20 6d 69 63 72 6f 2c 20 74 |the BBC micro, t| 000005a0 68 65 20 70 72 6f 67 72 61 6d 20 22 53 61 74 4c |he program "SatL| 000005b0 6f 61 64 22 20 67 69 76 65 73 20 61 63 63 65 73 |oad" gives acces| 000005c0 73 20 74 6f 20 74 68 65 20 63 75 72 72 65 6e 74 |s to the current| 000005d0 6c 79 0d 0a 61 76 61 69 6c 61 62 6c 65 20 66 69 |ly..available fi| 000005e0 6c 65 73 20 77 69 74 68 69 6e 20 74 68 65 20 73 |les within the s| 000005f0 61 74 65 6c 6c 69 74 65 20 64 61 74 61 20 73 65 |atellite data se| 00000600 72 76 69 63 65 2e 20 46 6f 72 20 49 42 4d 20 6d |rvice. For IBM m| 00000610 61 63 68 69 6e 65 73 2c 20 61 0d 0a 73 69 6d 69 |achines, a..simi| 00000620 6c 61 72 20 75 74 69 6c 69 74 79 2c 20 53 41 54 |lar utility, SAT| 00000630 4c 4f 41 44 2e 45 58 45 2c 20 69 73 20 70 72 6f |LOAD.EXE, is pro| 00000640 76 69 64 65 64 20 77 69 74 68 20 74 68 65 20 42 |vided with the B| 00000650 42 43 20 61 70 70 72 6f 76 65 64 20 74 65 6c 65 |BC approved tele| 00000660 74 65 78 74 0d 0a 63 61 72 64 20 2d 20 69 66 20 |text..card - if | 00000670 79 6f 75 20 64 6f 20 6e 6f 74 20 68 61 76 65 20 |you do not have | 00000680 74 68 69 73 2c 20 70 6c 65 61 73 65 20 63 6f 6e |this, please con| 00000690 74 61 63 74 20 79 6f 75 72 20 61 64 61 70 74 6f |tact your adapto| 000006a0 72 20 63 61 72 64 20 73 75 70 70 6c 69 65 72 2e |r card supplier.| 000006b0 0d 0a 0d 0a 54 6f 20 75 73 65 2c 20 74 79 70 65 |....To use, type| 000006c0 20 43 48 41 49 4e 20 22 53 61 74 4c 6f 61 64 22 | CHAIN "SatLoad"| 000006d0 20 28 42 42 43 20 4d 69 63 72 6f 29 20 6f 72 20 | (BBC Micro) or | 000006e0 6a 75 73 74 20 53 41 54 4c 4f 41 44 20 28 49 42 |just SATLOAD (IB| 000006f0 4d 20 70 63 29 2e 20 54 68 65 0d 0a 73 6f 66 74 |M pc). The..soft| 00000700 77 61 72 65 20 77 69 6c 6c 20 73 65 61 72 63 68 |ware will search| 00000710 20 66 6f 72 20 74 68 65 20 63 61 74 61 6c 6f 67 | for the catalog| 00000720 75 65 20 66 69 6c 65 2e 20 54 6f 20 64 6f 20 74 |ue file. To do t| 00000730 68 69 73 2c 20 69 74 20 6c 6f 6f 6b 73 20 61 74 |his, it looks at| 00000740 20 74 68 65 0d 0a 54 53 44 50 20 28 54 65 6c 65 | the..TSDP (Tele| 00000750 76 69 73 69 6f 6e 20 53 65 72 76 69 63 65 20 44 |vision Service D| 00000760 61 74 61 20 50 61 63 6b 65 74 29 20 66 6f 72 20 |ata Packet) for | 00000770 74 68 65 20 6d 61 69 6e 20 69 6e 64 65 78 20 70 |the main index p| 00000780 61 67 65 20 6e 75 6d 62 65 72 2c 20 74 68 65 6e |age number, then| 00000790 0d 0a 66 6f 6c 6c 6f 77 73 20 6c 69 6e 6b 20 35 |..follows link 5| 000007a0 20 6f 66 20 74 68 65 20 6d 61 69 6e 20 69 6e 64 | of the main ind| 000007b0 65 78 20 70 61 67 65 20 74 6f 20 66 69 6e 64 20 |ex page to find | 000007c0 74 68 65 20 6d 61 69 6e 20 74 65 6c 65 73 6f 66 |the main telesof| 000007d0 74 77 61 72 65 0d 0a 63 61 74 61 6c 6f 67 75 65 |tware..catalogue| 000007e0 2c 20 77 68 65 72 65 20 6c 69 6e 6b 20 35 20 61 |, where link 5 a| 000007f0 67 61 69 6e 20 77 69 6c 6c 20 6c 65 61 64 20 74 |gain will lead t| 00000800 6f 20 74 68 65 20 53 61 74 65 6c 6c 69 74 65 20 |o the Satellite | 00000810 53 65 72 76 69 63 65 0d 0a 63 61 74 61 6c 6f 67 |Service..catalog| 00000820 75 65 2e 20 55 6e 64 65 72 20 6e 6f 72 6d 61 6c |ue. Under normal| 00000830 20 63 69 72 63 75 6d 73 74 61 6e 63 65 73 2c 20 | circumstances, | 00000840 74 68 65 20 63 6f 6d 70 75 74 65 72 20 77 69 6c |the computer wil| 00000850 6c 20 66 69 6e 64 20 74 68 65 0d 0a 53 61 74 65 |l find the..Sate| 00000860 6c 6c 69 74 65 20 53 65 72 76 69 63 65 20 63 61 |llite Service ca| 00000870 74 61 6c 6f 67 75 65 20 77 69 74 68 69 6e 20 61 |talogue within a| 00000880 62 6f 75 74 20 31 35 20 73 65 63 6f 6e 64 73 2e |bout 15 seconds.| 00000890 20 4f 6e 63 65 20 66 6f 75 6e 64 2c 20 64 65 74 | Once found, det| 000008a0 61 69 6c 73 0d 0a 6f 66 20 65 61 63 68 20 66 69 |ails..of each fi| 000008b0 6c 65 20 61 76 61 69 6c 61 62 6c 65 20 69 6e 20 |le available in | 000008c0 74 68 65 20 73 65 72 76 69 63 65 20 77 69 6c 6c |the service will| 000008d0 20 62 65 20 64 69 73 70 6c 61 79 65 64 2e 0d 0a | be displayed...| 000008e0 0d 0a 44 75 72 69 6e 67 20 74 68 65 20 74 69 6d |..During the tim| 000008f0 65 20 74 68 65 20 73 79 73 74 65 6d 20 69 73 20 |e the system is | 00000900 73 65 61 72 63 68 69 6e 67 20 66 6f 72 20 74 68 |searching for th| 00000910 65 20 63 6f 72 72 65 63 74 20 63 61 74 61 6c 6f |e correct catalo| 00000920 67 75 65 2c 20 74 68 65 0d 0a 70 72 6f 6d 70 74 |gue, the..prompt| 00000930 20 22 4c 20 3d 20 4c 61 74 65 73 74 20 69 6d 61 | "L = Latest ima| 00000940 67 65 22 20 69 73 20 64 69 73 70 6c 61 79 65 64 |ge" is displayed| 00000950 2e 20 49 66 2c 20 64 75 72 69 6e 67 20 74 68 69 |. If, during thi| 00000960 73 20 74 69 6d 65 2c 20 74 68 65 20 22 4c 22 20 |s time, the "L" | 00000970 6b 65 79 0d 0a 69 73 20 70 72 65 73 73 65 64 2c |key..is pressed,| 00000980 20 74 68 65 20 70 72 6f 67 72 61 6d 20 77 69 6c | the program wil| 00000990 6c 20 73 65 61 72 63 68 20 66 6f 72 20 61 6e 64 |l search for and| 000009a0 20 64 6f 77 6e 6c 6f 61 64 20 74 68 65 20 6c 61 | download the la| 000009b0 74 65 73 74 20 61 76 61 69 6c 61 62 6c 65 0d 0a |test available..| 000009c0 73 61 74 65 6c 6c 69 74 65 20 69 6d 61 67 65 20 |satellite image | 000009d0 64 61 74 61 2c 20 6f 6e 6c 79 20 64 69 73 70 6c |data, only displ| 000009e0 61 79 69 6e 67 20 74 68 65 20 63 61 74 61 6c 6f |aying the catalo| 000009f0 67 75 65 20 64 65 74 61 69 6c 73 20 77 68 65 6e |gue details when| 00000a00 20 74 68 69 73 20 66 69 6c 65 0d 0a 68 61 73 20 | this file..has | 00000a10 62 65 65 6e 20 73 61 76 65 64 20 74 6f 20 64 69 |been saved to di| 00000a20 73 63 2e 20 54 68 65 72 65 20 69 73 20 6e 6f 20 |sc. There is no | 00000a30 72 65 73 70 6f 6e 73 65 20 62 79 20 74 68 65 20 |response by the | 00000a40 63 6f 6d 70 75 74 65 72 20 77 68 65 6e 20 22 4c |computer when "L| 00000a50 22 20 69 73 0d 0a 70 72 65 73 73 65 64 2c 20 62 |" is..pressed, b| 00000a60 75 74 20 69 74 20 77 69 6c 6c 20 68 61 76 65 20 |ut it will have | 00000a70 62 65 65 6e 20 6e 6f 74 65 64 21 20 49 66 20 79 |been noted! If y| 00000a80 6f 75 20 70 72 65 66 65 72 20 74 6f 20 73 65 6c |ou prefer to sel| 00000a90 65 63 74 20 74 68 65 20 66 69 6c 65 73 0d 0a 6d |ect the files..m| 00000aa0 61 6e 75 61 6c 6c 79 2c 20 64 6f 20 6e 6f 74 20 |anually, do not | 00000ab0 70 72 65 73 73 20 22 4c 22 20 2d 20 6a 75 73 74 |press "L" - just| 00000ac0 20 6c 65 74 20 74 68 65 20 70 72 6f 67 72 61 6d | let the program| 00000ad0 20 72 65 63 65 69 76 65 20 61 6e 64 20 64 69 73 | receive and dis| 00000ae0 70 6c 61 79 20 74 68 65 0d 0a 63 61 74 61 6c 6f |play the..catalo| 00000af0 67 75 65 20 65 6e 74 72 69 65 73 20 69 6e 20 74 |gue entries in t| 00000b00 68 65 20 6e 6f 72 6d 61 6c 20 77 61 79 2e 20 49 |he normal way. 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24-02-89/Smanual.m0
24-02-89/Smanual.m1
24-02-89/Smanual.m2
24-02-89/Smanual.m4
24-02-89/Smanual.m5
.