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dc1785af

DEMO MANUAL DC1785A

QUICK START PROCEDURE

Figure 2. Software Screenshot

Connect the DC1785A to a DC590 USB Serial Controller

using the supplied 14-conductor ribbon cable. Connect the

DC590 to host PC with a standard USB A/B cable. Run the

evaluation software supplied with DC590 or downloaded

from http://www.linear.com/software. The correct program

will be loaded automatically. Click the COLLECT button to

start reading the input voltage. Details on software features

are documented in the control panel’s help menu.

SOFTWARE SET-UP

The DC1785A software is designed to give the user ac-

cess to all LTC2991 functionality and features. There are

several options that may be accessed both through right

and left clicks.

Input Settings

By default, all eight inputs are set as single-ended. This may

be modified by either left clicking the input type picture to

cycle through the options or right clicking the picture to

bring up a list of options and left clicking to select.

The legend for each input type icon is included below.

Single-Ended (default)

Differential

Diode Temperature

Input sampling can also be turned on and off by left click-

ing the label of the corresponding input. When an input

is off, the values box below the label will be shaded and

the value will stop updating.

Graph Settings

By default, the QuikEval software will graph V1. To begin

graphing a different input, left click the values box of the

input to be graphed.

To pan the graph, hold down the right mouse button while

hovering over the graph and move the mouse in the direc-

tion of desired motion. The graph will cease to auto-scroll

after a pan has be initiated, to reactivate the auto-scroll

double left click anywhere on the graph.