Patton electronic 1110ARC Rear Card Settings, HOW the Jumpers Work, DTE Shield Pin 1 & Frgnd JB1

3.2 REAR CARD SETTINGS

The Model 1110ARC is compatible with two dual-fiber interface cards, one with dual ST connectors and one with dual SMA connectors. Both cards use an HD-26 female for the RS-232 interface. The jumpers on both interface cards function identically. Figure 2 (below) shows the location of the jumpers.

JB1

(pin 1 on right)

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Figure 2. Model 1110ARC rear card jumper location

3.2.1 HOW THE JUMPERS WORK

Figure 3 (below) shows the 3-pin jumpers used on the rear card. The strap enables or disables a particular function depending upon whether it straddles pins 1 and 2, or pins 2 and 3.

Figure 3. Orientation of interface card strap

DTE Shield (Pin 1) & FRGND (JB1)

In the connected (closed) position, this strap links DB-25 pin 1 and frame ground. In the open (disconnected) position, pin 1 is “lifted” from frame ground.

JB1

Position 1&2 = DTE Shield (Pin 1) and FRGND connected Position 2&3 = DTE Shield (Pin 1) and FRGND not connected

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