Hotkeys for changing variables
used by SL201.EXE while
the program is running
 
Variable HotKey Definition 
ffile$
A
Archive file name for loop display
diag
B
Data display options 
 0 -- No diagnostics 
 1 -- Stroke statistics only 
 2 -- Both stroke statistics 
      & parameter values
C
Clear screen
degoff
D
Clockwise (degoff  > 0 for clockwise) degree offset. Added to measured bearing to correct deviation of orientation of antenna from the NS and EW planes 
mrref!
E
Maximum allowable ratio |e2/e1| of e-fields for signal to be a return stroke (0 < mrref! < 1.0) 
attenoff
F
Turn attenuator off
timezone$
G
Time zone of PC clock
avghr
H
Number of hours over which stroke statistics accumulated for diag = 1 or diag = 2
rejsml!
I
Fraction of lower part of list of B-field signal magnitudes rejected in trimmed mean of signal magnitude that is used to estimate distance to lightning
rejbig!
J
Fraction of upper part of list of B-field signal magnitudes rejected in trimmed mean of signal magnitude that is used to estimate distance to lightning
arch
K
Data archive option (Live mode)  
  0 -- no archiving  
 1 -- archiving on
starthr
L
Beginning hour for loop of archived data (Archive mode)
endhr
M
Ending hour for displayed archived data
attenon
N
Turn attenuator on
oldtime
O
Duration (minutes) over which NR data kept in bearing stack and so used to estimate average B-field signal magnitude
rstp
P
Minimum number of strokes in a bearing that are required to plot a yellow pixel. Note that activ = 2*rstp is used to measure level of activity for trailclipping (% set by trail0, ..1, ..2)
Q
Quit program
attenrat!
R
Attenuator ratio used to adjust dxconst in formula relating average B-field signal magnitude to estimated distance
spb
S
Maximum number of strokes per bearing in the stack that are used to estimate average B-field magnitude (< 44)
T
Adjust PC clock time (Live mode)
dupdeg
V
Angle (degrees) defining range over which duplicate strokes in a flash are identified; range is current bearing + dupdeg. NR strokes occurring within 1 sec & within this bearing range are not used in the estimate of average B-field magnitude
dxconst&
X
Proportionality constant used in formula for estimated distance to lightning activity; formula relates average B-field magnitude to distance in units of pixels (km = 2.5 times number of pixels)
minattenon
Y
Number of minutes between times when attenuator is turned on for 1 minute; preferably, use a value that divides 60 exactly
ibeep
Z
Beep when NR detected. 
 0 -- Off  
 1 -- On
dist0
0
Minimum distance for which no radial averaging used to obtain average B-field magnitude
dist1
1
Minimum distance for which 5-bearing radial averaging used to obtain average B-field magnitude
dist2
2
Minimum distance for which 9-bearing radial averaging used to obtain average B-field magnitude
eksp!
3
Exponent in formula for estimated distance to lightning activity; formula relates average B-field magnitude to distance in units of pixels (km = 2.5 times number of pixels)
pxlofst
4
Offset added to adjust number of pixels from the screen center given by the formula for estimated distance to lightning activity
starthr
5
Beginning hour for display of loop of current data (Live mode)
trail0
6
Maximum percentage of deviation from previous average B-field magnitude for new average to be used to calculate next yellow pixel location (light activity--number of strokes per bearing less than activ = 2*rstp)
trail1
7
Maximum percentage of deviation from previous average B-field magnitude for new average to be used to calculate next yellow pixel location (moderate activity--number of strokes per bearing between activ = 2*rstp and 4*rstp)
trail2
8
Maximum percentage of deviation from previous average B-field magnitude for new average to be used to calculate next yellow pixel location (heavy activity--number of strokes per bearing greater than 2*activ = 4*rstp)
minsig
9
Minimum B-field signal magnitude for adding most recent signal to the bearing stack. If so, then new signal used to calculate updated average B-field magnitude for formula giving the estimated distance to the lightning activity (minsig > 100 mV recommended)

Note: If a search engine brought you directly to this page, then go to the GP-1 Start Page.
The Web address for the GP-1 Start Page is http://bub2.meteo.psu.edu/default.htm