Lord MicroStrain SG-Link-LXRS Technical Notes

LORD TECHNICAL NOTE
SG-Link
350 Ohm Tester Board
Overview
The 350 Ohm Tester Board (part number 6309-6000) provides a precise instrument to test
the differential input channel and the single ended input channel of the SG-Link
can be used with any SG-Link
bridge or ½ bridge with 350 ohm completion. The Tester Board is used in conjunction with
®
Node Commander software.
Hardware Installation

Determine the bridge configuration of the SG-Link
accompanying certificates and documentation.

Set the appropriate dip switch settings for the bridge configuration using the guide
(bottom of the Tester Board). For our example we will use a FULL bridge
configuration.

Set switches 1, 2 and 3 to ON and switch 4 to OFF. As you view
Figure 2, switches 1, 2 and 3 would be to the left and switch 4 would
be to the right.

Note: The dip switches may come with a brown protective film over
their surface; simply peel the film off to access the white levers.

Turn the SG-Link
charger barrel connector to insure the internal battery is not being
charged.

Loosen (by turning counterclockwise) the 8 terminal screws in the
green Phoenix connector on the SG-Link

Insert the 8 fingers of the Tester Board into the Phoenix connector
as shown in Figure 1.

Tighten snuggly (but do not over-tighten) the 8 terminal screws.

Turn the SG-Link
Software Operation

Launch Node Commander

Right-click the node and a drop-down menu will appear.

Click Configure.

Click Configure Node and the Configuration window will appear.

Click the Channels tab.

Enable channels 1 and 4 by checking the checkboxes.

Click Apply.

Click the Configure button for channel 1.

The Configuration (Channel 1) window will appear.

Set the Hardware Gain to 503.

Set the Auto-Balance radio button to Midscale.

Click the Auto-Balance button.

An auto-balance will occur and a confirming message will appear.

Click OK.

Set the Conversion Coefficients to Strain and μStrain will automatically fill in as Units.
1
®
-LXRS
® ®
-LXRS that has its differential input channel outfitted as full
® ®
-LXRS power switch off and unplug the battery
®
® ®
-LXRS power switch on.
®
software and establish communications with the SG-Link
®
® ®
-LXRS
®
-LXRS .
® ®
-LXRS . It
by reviewing its
Figure 1: Tester Board
Figure 2: Dip Switches
®
-LXRS
®
as normal.