RLTool revision history
2.20.3.29 (16
Mars 1999)
Trouble report 219:
Profile
analysis report stated No line-of-sight incorrectly. This problem
is now fixed.
2.20.3.28 (23 February 1999)
Trouble report 215: RLTool could sometimes
calculate reflection point above the line-of-sight.This bug is
now fixed.
Trouble report 216: When deleting sites in the
Network Layout, and not considering co-ordinates, a path could be
place outside the Layout. This bug is now fixed. The network is
now always optimized.
Trouble report 218: The profile analysis calculation
involves the calculations of the optimum antenna spacing. This
calculation can under certain circumstances result in a negative
value, thus leading to a program crash. This bug is now fixed.
2.20.3.27
(14 February 1999)
Trouble report 213: When ceating a new project,
and changing the center point of the network layout and then
place a site on the layout, RLTool would ask the user to save the
project. This bug is now fixed.
Trouble report 214: When ceating a new project,
and check "Consider site co-ordinates" from
"Operational Mode" under "Project Data". Now,
when adding two sites, connecting them, and setting the band
frequency of the path to, let's say, 15 GHz, a calculation of the
path would lead to a program crash. This bug is now fixed.
2.20.3.26
(22 November 1998)
On paths, where space diversity is used to protect the path
against the influence of ground reflected rays, the optimum
antenna spacing may be smaller than the diameter of the antennas.
In this case, RLToolProPac corrects the corresponding formulas(*)
with one or more wavelengths, until the optimum antenna spacing
is larger than the antenna diameters. In the earlier versions of
RLTool, this correction could, under certain circumstances, give
a too small antenna spacing. This has been corrected now. If you
have used space diversity in order to protect a path against
ground reflections, and you have calculated the optimum antenna
spacing with earlier versions of RLTool, you should have detected
this error in the last table of the ground reflection analysis,
colums "Effectiv. of selected ant at....": instead of
values between 0.4 and 0.6 for the wavelength for a correct
antenna spacing calculation, an incorrect wavelength factor
between 0.9 and 1.1 is shown. Nevertheless, it may be advisable
to check these calculations with the uppdated version of
RLTool.(*) See formulas 19-21 in the 2nd part of the operator's
manual.
Minor printout changes to reports:GROUND REFLEFCTION ANALYSIS,
for different effective radius factors k, (considering tilted
terrain)GROUND REFLEFCTION ANALYSIS, for different effective
radius factors k, (no tilted terrain considered)GROUND
REFLEFCTION ANALYSIS, Optimum space diversity and its
effectiviness for different k factors, (no tilted terrain
considered)
2.20
New functionality according to the ITU-R issued version 7 of its
Recommendation P.530
2.14.x.4
A bug causing incorrect calculation of multipath fading at
mountaineous condition is corrected.
2.14.x.3
Corrected a bug. When, in the Network layout, the arrow button in
the tool bar is pressed, it was still possible to add sites.
2.14.x.2
In the Optimal Antenna Height dialog window: When entering data
for clearance for ITU-R, and then clicking the ITU-R check box,
the clearance data retored itself to the previous value. This is
now corrected.
A software protection system is introduced for RLTool. A special
hardware key has to be installed in the parallel printer port in
order for RLTool to run. If RLTool does not detect any key lock,
it will enter a Demo mode. In Demo mode no printing to paper is
possible, nor saving any projects to disk.
2.14
It is now only possible to select objects on the Network Layout
with the left mouse button. So when an object is selected
(highlighted), pressing the right mouse button will bring up the
popup-menu no matter where the mouse pointer is.
Increased the capacity of the history text input box from 255
characters to 4096.
When printing a projects profiles, only one of several profiles
was printed. This is now fixed.
2.13
Terrain objects are now separated from the terrain samples.
Terrain objects are now laid upon the sample profile, thus
simplifying editing of terrain objects, always keeping the
profile intact. Older projects terrain objects are considered
part of the profile and have to be moved to the terrain object
list manually.
Changes are made to the sample list and terrain object list
dialogs.
One or more profiles can now be read from an external text
(ASCII) file. The text file has to conform to a special syntax or
format.
Quicker reading of large project files.
The drawing of a profile, once it has been drawn, goes faster
now.
The Error and Warning window has now changed its name to
Messages.
Some minor bugs have been fixed.
In 16-bit version, when changing a profile sample terrain type,
the following sample was also changed. This is now corrected.
(Rev. 5 and higher)
2.12
Added new functionality; Return Paths
Corrected a bug in dialogs for profile analysis. Optimum antenna
height dialog did not react when pressing Calculate. Inserting an
object caused a error message complaining about wrong distances.
This was only for 32-bit version.
Corrected a bug causing a link printout to crash.
Incorrect precision in dialog for obstruction attenuation, normal
path 32-bit versions only
Incorrect precision in dialog for distance all paths 16-bit
versions only
Frequency diversity: If frequency spanning is greater than 5% of
the band frequency, spanning is set to 5%
Space and combined space/frequency diversity; If improvment is
less then factor 5, the improvment is still used as it is.
Compared to setting the improvement to factor 1.
Corrected a bug in multipath fading formula.
Corrected a bug when drawing the profile analysis. Placing a tall
object in the center of the path sometimes caused incorrect
scaling of the profile.
Corrected a bug which caused an error in the the last 2 profile
report pintouts sometimes.
Corrected a fault handling the clearance, profile report prinout
number 1.
Corrected a bug which caused a crash when clicking with left
mouse button in the anywhere link layout.
Corrected a bug. Memory never returned when doing a lot of
UNDO/REDO actions.
2.11
Added calculation per kilometer for medium grade links
Added the possibility to change the allowance for planning
objective.
Corrected the calculation of critical distances for different
k-factors
Corrected a bug which caused incorrect scaling when printing,
Windows 3.1 version only.
2.10
Extensive rewriting of code concering dialogs. (Only valid for
Windows 95)
Additional improved RLTool DLL file version handling.
Setup of PROPAC will now associate extension *.rl with PROPAC.
This makes it possible to start PROPAC from File Manager
double-clicking on any rl data file (*.RL) (Windows 3.1)
2.02
Additional improved RLTool DLL file version handling.
Corrected file filter handling when browsing for equipment files
from the Preferences dialog. Only for Windows 95.
Extended path distance controls for passive repeaters with 1
decimal. Now the control accepts 0.01 km input, that is 10 meter.
Path distances are now printed with 2 decimals.
Corrected elevation angle for antenna alignment calculation for
very short distances.
2.01
Program crash whenever exiting RLTool after a performed profile
analysis calculation.
Program chrash when a path was given instead of a file name from
command line.
Incorrect handling of fixed, calculated and ignored grazing
angle.
Inproper scaling when printing sometimes.
Adjusted text in preferences dialog.
Improved RLTool DLL file version handling.
2.00
First version of RLTool ProPac (Profile analysis, Performance And
unavailability Calculation)