Manual USB-IIRO-16 Family
9
Chapter 3: Option Selection
Refer to the setup programs on the CD provided with the board. Also, refer to the Block Diagram and the
Option Selection Map when reading this section of the manual.
Input Power
This is an option for applications that use more current than what your computer can provide on the USB
port (typically 500 mA). The DC jack has a 2.00mm post on board and is designed to be used with the 9
VDC AC/DC external power supply that ships with this option. The voltage regulator on board regulates the 9
VDC and provides 5 VDC to the onboard circuitry. When using external power, switch the jumper located
near the USB connector to VEXT, otherwise when the jumper is in the VUSB position current is drawn from
the USB port. For
–OEM versions of our USB modules, using external power via either the DC power jack, or
a pair of screw terminals, provide a reg5VDC to power the board.
ATTENTION!!! READ THIS IF YOU WON’T BE PROVIDING POWER TO THE USB I/O
OEM MODULE (BOARD ONLY) VERSION OVER THE USB CABLE!!!
THE EXTERNAL POWER CIRCUITRY HAS BEEN MODIFIED FOR THE OEM
VERSIONS OF OUR USB I/O PRODUCTS!!! DO NOT PLUG IN A 9VDC POWER
SUPPLY TO THE DC POWER JACK OR THE BOARD WILL BE DAMAGED AND THE
WARRANTY VOIDED!!
Filter Response Switch
Jumpers are used to select input filtering on a channel-by-channel basis. When jumper FLT0 is installed,
additional filtering is introduced for input bit 0, FLT1 for bit 1, etc.
JUMPER SELECTION
Bit Filtered
JUMPER SELECTION
Bit Filtered
FLT-0
FLT-1
FLT-2
FLT-3
FLT-4
FLT-5
FLT-6
FLT-7
IN00
IN01
IN02
IN03
IN04
IN05
IN06
IN07
FLT-8
FLT-9
FLT-10
FLT-11
FLT-12
FLT-13
FLT-14
FLT-15
IN08
IN09
IN10
IN11
IN12
IN13
IN14
IN15
This additional filtering provides a slower response for DC signals as described previously and must be used
when AC inputs are applied.
