Multi-Tech Systems FR111 owner manual 3.5 V.35 Shunt, 5. Shunts

3.5V.35 Shunt

Either EIA-232D or ITU-T V.35 electrical signal interface can be selected on the data port. Units are shipped with EIA-232D signal levels se- lected. Use the following procedure to select V.35.

CAUTION

This procedure requires opening the unit. Like most products of this type, this product contains components that are sensitive to static and static discharge. Please use your best efforts to avoid static discharge when contacting the components inside this unit.

WARNING:

Always disconnect the power cord before opening the enclosure to avoid any chance of electric shock.

1.Unplug the power cord.

2.The enclosure consists of two halves. Using a Phillips screwdriver, remove the two screws from the bottom of the unit. Remove the top half.

3.Pry the data port shunt out of its RS232 socket and insert it into the V.35 socket.

V.35 Shunt Position RS232 Shunt Position

Figure 3-5. Shunts

4.Carefully reassemble the unit, making sure that no foreign objects are accidentally left inside.

6.The data port is now configured with V.35 signal levels. The cable pin designations are shown in Appendix A. To connect to a device equipped with a V.35 34-pin connector, you must obtain an adapter cable. Using the signal pin designations in Appendix A, you may make or order a cable from most any cable vendor.

34