User's Manual

October 15 2009 – Installation Guide Draft – Edit Purposes Only Page 32
Installation Guide –April 2010
2010
Table 2-3 V-Station 4G, V-Flex 4G and FingerVein Station 4G Power Requirements
Power Requirement: 12 watts
Input Voltage Range: 12-24.0 VDC
Peak Current (12 VDC) 1 A
Peak Current (24 VDC) 500 mA
Table 2-4 V-Station 4G Extreme Power Requirements
Power Requirement 12 watts
Input Voltage Range 12-24.0 VDC @ 3 Amps
Peak Current (12 VDC) 1 A
Peak Current (24 VDC) 500 mA
Cooler Module 12 to 24VDC @ 10Amps
Most power supplies on the market today provide good input and output isolation.
However, power supplies which do not provide isolation (or have high leakage
capacitance), coupled with accidental AC power line interchanges, present serious
ground fault problems for installers. With a ground fault, the signal reference between
subsystems may be 115 VAC apart. If these subsystems are interconnected, the large
potential difference can cause equipment damage or personal injury. L-1 Identity
Solutions recommends using a dedicated regulated DC power supply.
All factory-supplied power supply assemblies are either switching or regulated linear
supplies and are isolated for safety and to minimize ground loop problems.