Impulse 8224 - Manual (Page 7)

SeaDAC Power Requirements
Sealevel SeaDAC modules are powered by the USB host interface and require 5VDC
@ 500mA to be available on the USB port. Most computers and powered USB hubs
are capable of meeting this requirement, while passive USB hubs and some laptops
running on batteries may not. Check the product manual that shipped with your
system or hub if you are uncertain. You can also contact Sealevel technical support
for assistance.
The maximum power requirements for each SeaDAC device are shown below.
Item# Description mA
8221 16 Isolated Inputs / 16 Reed Relay Outputs 340
8222 16 Isolated Inputs / 8 Form C Relay Outputs 460
8223 32 Optically Isolated Inputs 140
8224 32 Reed Relay Outputs 480
8225 16 Form C Relay Outputs 820*
8227 8 Isolated Inputs, 8 Outputs, 2 D/A, 16 A/D 360
8232 8 Isolated Inputs, 8 High-Current Form C Outputs 480
NOTE: The SeaDAC REL-16C (Item# 8225) includes a 5VDC @ 2.4A
wall-mount power supply (Item# TR101). External power is
required with this module due to the power requirements of the
sixteen Form C relays.
© Sealevel Systems, Inc. - 5 - SeaDAC User Manual