Measurement Computing WavePort rev.3.0 - Manual (Page 45)

WavePort User’s Manual 09-29-00 Hardware and Operation Reference 4-17
WavePort’s self-contained power module can power the unit in portable, or “in-vehicle” UPS applications
[both 12 and 24 Volt DC systems]. The power module provides clean and uninterrupted operating power
for reliable data acquisition in a vehicle. This can be:
• Before (and during) connection to the vehicle
• Prior to engine/generator start
• During engine start-up (battery sag due to the high-current demand of starter motor and solenoid)
• After engine turn off
• When (and after) disconnecting from the vehicle
The power module contains two rechargeable gel-pack batteries, associated charging circuits, and current
indicators. The charging process is relatively fast, and extreme temperature performance is good.
Main and auxiliary power input comes from 12 to 30 VDC via WavePort’s DIN5 connector, labeled:
DC POWER INPUT, and located on WavePort’s cover plate. Lines from the DIN5 pins connect to
WavePort’s internal power module.
DC Power Input
DIN5 Connector on WavePort’s Cover Plate
A CA-198 (10 foot-long power-adapter cable) can be used to power WavePort from a vehicle.
The CA-198 can link WavePort’s DIN5 connector to a vehicle’s cigarette lighter.
The 5-pin DIN connector is rated at a maximum load of 5 Amps.
CA-198 Power-Adapter Cable
For trouble-free operation, you must fully charge the batteries before use.
Charged battery runtime depends on the load and on the mode of operation.
When useful battery power is nearly depleted, a Beeper sounds to provide warning. A few minutes after
the beeper begins sounding, an internal cutoff circuit disconnects the load from the battery. This feature
protects the batteries from “deep-cycle” damage.