RAD Data comm T1 - Manual (Page 23)

FOM-E1/T1 Installation and Operation Manual Chapter 2 Installation and Setup
Installation and Setup 2-3
Setting the SW1 and SW2 switches to CONNECTED is valid for coaxial cables only.
When using 4-wire connection, set these switches to FLOATING.
5. Slide the PCB interior back into the case.
6. Screw in the two rear panel screws to secure the PCB in the case.
Now you can proceed with the line, DTE and power connections as
described below.
Fiber Optic
Interface Board
AIS
SW3
ON
OFF
INPUT OUTPUT
SW2 SW1
GROUNDED GROUNDED
FLOATING FLOATING
JP2
JP4
JP5
JP6
JP7
JP8
100 ohm
BAL
T1
75 ohm
UNBAL 120 ohm
BAL
CEPT
INTERFACE
Figure 2-1 FOM-E1/T1 PCB Layout
Note