Raven SCS 660 Installation And Service Manual page 39

2. CALCULATING "SPEED CAL"
1) Complete "INITIAL CONSOLE PROGRAMMING" before doing this procedure.
2) Enter "0" in key labelled
3) Enter a SPEED CAL of 612 [155] in key labelled
4) Drive 1 mile [1 km].
CAUTION: Do not use vehicle odometer to determine distance.
lines or Highway markers.
5) Read DISTANCE by depressing key labelled
a) DISTANCE should read a value of approximately 5280 [1000].
between 5200-5350 [990-1010], the SPEED CAL for your vehicle is 612 [155].
b) If the DISTANCE display reads any other value, perform the following
calculation:
Multiply the SPEED CAL by the target distance reading, then divide the sum
by the actual value in DISTANCE display. This will give you the corrected
value to enter for SPEED CAL.
whole number.
EXAMPLE:
6) The corrected number to enter for SPEED CAL is 646 [158].
7) Verify the corrected SPEED CAL number calculated above:
a) Zero out the DISTANCE display as in Step 2.
b) Enter the corrected SPEED CAL number as in Step 3.
c) Repeat Steps 4 and 5a.
Steps 5b, 6, and 7.
SPEED CAL = 612 [155]
Target distance reading = 5280 [1000]
Assume the actual DISTANCE display reads 5000 [980]
ENGLISH UNITS:
= 612 x 5280 = 646.3
5000
If DISTANCE value does not read correctly repeat
You must round off to the nearest 3 digit
METRIC UNITS:
= [155] x [1000] = [158.1]
37
Use section
If it reads
[980]