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Appendix H – Replacement Parts
86 DL™ User Manual Rev 3
APPENDIX G - CONVERSIONS
Listed below are several commonly used equivalents between the SI (Système Internationale) units of weights and
measures used in the metric system, and those used in other systems.
Distance
1 metro (m) = 100 centimeters (cm) = 1000 millimeters (mm)
1 kilometer (km) = 1000 metros (m)
1 international foot = 0.3048 metro
1 US survey foot = 0.3048006096 metro
1 statute mile = 1609.3 metros
1 nautical mile = 1852 metros
Temperature
degrees Celsius = (5/9) x [(degrees Fahrenheit) - 32]
degrees Fahrenheit = [(9/5) x (degrees Celsius)] + 32
Volume
1 liter (l) = 1000 cubic centimeters (cc)
1 gallon (Imperial) = 4.546 litters
1 gallon (US) = 3.785 litters
Weight
1 kilogram (kg) = 1000 grams
1 pound = 0.4536 kilogram (kg)
Decimal, Hexadecimal & Binary Equivalents
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0 1 2 3 4 5 6 7 8 9 A B C D E F
0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
GPS Time of Week (e.g. 511 306 seconds) to Calendar Day
1. (511 306 seconds) / (86 400 seconds / day) = 5.917893519 days
2. (0.917893519 days) x (24 hours / day) = 22.02944444 hours
3. (0.02944444 hours) x (60 minutes / hour) = 1.76666667 minutes
4. (0.76666667 minutes) x (60 seconds / minute) = 46 seconds
5. So, 511 306 seconds = Day 5 (Thursday) + 22 hours, 1 minute, 46 seconds into Friday.
Calendar Date
E.g. 11:30 hours, January 22, 1995 (before GPS week rollover August 22, 1999)
Days from January 6, 1980 to January 22, 1995 = 15 years x 365 days / year = 5475 days
Add a day for each leap year (a year that is divisible by 4 but not by 100; every 100 years a leap year is skipped) = 4 days
Days into 1995 (22
nd
is not finished) = 21 days
Total days = 5500 days
Deduct 5 days: January 1
st
through to January 5
th
, 1980 = 5495
GPS Week: 5495 x 86400 seconds per day = 474768000 seconds/604800 seconds per week = 785
Seconds into week: 22
nd
day: 11.5 hrs x 3600 seconds/hr = 41400
GPS time of week: Week 785, 41400 seconds
E.g. 13:30 hours, January 28, 2005 (after GPS week rollover August 22, 1999)
Days from August 22, 1999 to January 28, 2005 = 6 years x 365 days / year = 2190 days
Add a day for each leap year = 2 days
Days into 2005 (28
th
is not finished) = 27 days
Total days = 2219 days
Deduct 21 days: August 1
st
through to August 21
st
, 1999 = 2198
GPS Week: 2198 x 86400 seconds per day = 189907200 seconds/604800 seconds per week = 314
Seconds into week: 28
th
day: 13.5 hrs x 3600 seconds/hr = 48600
GPS time of week: Week 314, 48600 seconds