Measurement Computing WaveBook rev.4.0 - Manual (Page 16)

2-6 An Introduction to WaveBook 05-22-01 WaveBook User’s Manual
How are WaveBook systems powered?
Input voltage to the WaveBook and to the system modules (WBK10 series, WBK14, WBK15, WBK16,
and WBK17) must be in the range of 10 to 30 VDC and can come from an appropriate AC-to-DC adapter,
or from a battery.
Available AC-to-DC adapters include the TR-40U (supplied), which has an input of 90-264 VAC and a
output rating of 2.2 amps @ 15 VDC.
Battery options include the DBK30A, DBK34A, or other 10 to 30 VDC source such as a car battery. The
DBK30A provides 14 VDC and when fully-charged has a storage capacity of 3.4 A
⋅hr; car batteries have
much higher capacities. The basic formula for battery life is:
Runtime (hr) = Battery capacity (A
⋅hr) / Current load (A)
System cards (WBK11, WBK12, or WBK13 series) get power from their WaveBook or WBK10/10H/10A
expansion module.
Before connecting your system to power, you need to know the power requirements of your specific system.
A calculation method, that incorporates the use of worktables, is presented in Chapter 3.
Reference Notes:
•
Chapter 3, System Setup and Power Options, includes examples of power connections for
different WaveBook system scenarios. In these examples the included TR-40U power
adapters are used.
•
Chapter 4, WaveBook Operation Reference, includes discussion of power supplies other
than the TR-40U.