Section 1 - Unit Installation; Power; Totalize Switch; Rear Connectors - MSI CellScale 3750CS User Manual

MEASUREMENT
SECTION 1 – UNIT INSTALLATION
The 3750CS is simple to setup and use. If there are no peripheral devices such as a printer or scoreboard, setup
consists of installing the mounting bracket (see Appendix A), plugging in the Antenna, and applying power. To
install an RS-232 cable, see the procedure in Section 8, "Comm Port Cabling".

POWER

The 3750CS is available with three types of power inputs: 1) Universal AC power. Operates from 86 to 265 VAC
45 to 440 Hz 2) Vehicle Power. Available in two ranges, 9-36 VDC or 18-60 VDC. This power supply is transient
protected and filtered for use in vehicles such as cranes, forklifts, etc..
DC Cable Color Code
Blue – Connect to Battery Negative. It is generally best to connect this directly to the battery negative terminal,
or where the negative terminal is attached to the chassis.
Brown – Connect to Battery Positive. Again, a direct battery connection is usually best to avoid interference
with vehicle electrical systems. The 3750CS is internally fused. If connected to a breaker or fuse panel, use 1A
at 12V, .5A at 24V. Fast blow or medium blow fuses are acceptable.
White, Black, and Green – These are reserved for control functions used in specials. Usually these should be
insulated and not wired anywhere. Please consult MSI for more information.
TOTALIZE SWITCH OPTION
When equipped with the totalize switch option, the user is responsible for providing a SPST (single pole, single
throw) momentary switch. This can be a push-button, foot switch, momentary toggle switch, etc..
Totalize Switch Cable Wiring
This input is designed to attach to a momentary SPST switch. Totals are triggered by shorting the blue and
brown wires together. Do not ground either wire. Insulate unused wires.
3750CS REAR CONNECTORS
Software V1-15 to 1-20
SYSTEMS INTERNATIONAL
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MSI-9000 CellScale System • 3750CS User Guide Page 5