Raven SCS 460 Installation & Service Manual page 40

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.
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
This will give you the corrected
You must round off to the nearest 3 digit
METRIC UNITS:
= [155] x [1000] = [158.1]
36
Use section
If it reads
[980]