ISSPRO R8480TM - Manual

ISSPRO, INC. 2515 N.E. Riverside Way, Portland OR 97211
Telephone: (503) 288-4488  Toll Free: (800) 888-8065
FAX: (503) 249-2999
Form No. IS107 - (Rev. C 11/29/2010) Page 1 of 4
ISSPRO R8480TM 3 3/8” Dia. Programmable Speedometer
Air Core Version
General Information:
Operating Voltage: 11-30 VDC: NOTE – Instrument comes equipped with a 12V lamp. Replace
lamp with one of proper voltage when installing instrument on 24V systems.
24V Lamp part number is 656.
Input: Magnetic sensor or AC generator
Transient
Protection: +100V, -400V
Reverse Voltage Protected
Calibration:
The ISSPRO Programmable Speedometer is calibrated (programmed) by setting a combination of eight
switches found in the rear of the instrument. The odometer and pointer are electronically linked together and
both are calibrated when the switches are properly set. Program before installing. Models are available with
and without odometers.
Calibration Procedure:
Calculate the “calibration number” from the appropriate formula below. A minimum calibration number of
12390 is required to be within calibration range. Refer to the “Calibration Switch Setting” table with this
number. Locate the row in which the calibration number is between the limits, then set the switches marked
with an “X” to the “on” position (up).
Example: Calibration number = 29644: From the
table 29644 lies between 29609 and 29844,
therefore, switches 3,4,6 and 8 will be set to “on”.
(1) Front wheel mounted tone wheel:
Calibration Number = # slots in tone wheel X tires
REVs per mile
(2) Tail Shaft mounted magnetic sensor:
Calibration Number = Tires REVs per mile X
differential ratio X 16
(3) Sender driven from transmission cable drive:
Calibration Number = Cable turns per mile X #
pulses per sender turn