Impulse 520W - Manual (Page 65)

D/A Settings
The (E1) and (E2) jumpers (shown in the orange boxes on the previous page)
configure the D/A outputs for 0-5V or 0-10V. Both channels can be configured
independently. The D/A outputs do not support negative voltages. You must also set
the correct output voltage in your application or MaxSSD. Refer to the SeaMAX
Application Suite section of this manual for help configuring software to work with
the SeaI/O-470.
A/D 10X Gain
The A/D 10X gain (E3) jumper (shown in the green box on the previous page) is
disabled at the factory. Position the hardware jumper on both pins to enable this
functionality, which allows smaller voltages to be measured more accurately (e.g., a
0-1V input signal can be measured more accurately by enabling the 10x hardware
gain jumper and setting the SeaI/O-470 A/D input channel for 0-10V range). You
can also set the A/D input channel for 0-5V to sense voltages smaller than 0.5V.
When the jumper is enabled, the “10X Hardware Gain” checkbox will also be
enabled on the A/D Inputs tab in MaxSSD. Refer to the SeaMAX Application Suite
section of this manual for information on using MaxSSD.
A/D and Current Loop Dipswitches
The (SW3) and (SW4) dipswitches (shown in the yellow box on the previous page)
configure the A/D inputs for current loop mode and are disabled at the factory. Since
current loop mode is differential, the corresponding dipswitch on both (SW3) and
(SW4) should be properly set (e.g., ‘CH1’ on both dipswitches needs to be set to
‘ON’ to enable current loop mode).
SW3 – enables the current-loop sensing resistor
SW4 – ties the other half of connection to ground
© Sealevel Systems, Inc. - 62 - SeaI/O User Manual