RAD Data comm ARC-101 - Manual (Page 29)

ARC-101 Installation & Operation Manual Chapter 2. Installation
ARC-101 Modules 2-13
Jumper Settings
for T3
Figure 2-17 T3 Jumper Locations
The jumpers JP1 and JP2 (located near the front panel of the module), are
used to control the transmit levels, and should be set according to the length
of the links (see Figure 2-17).
T3:
JP1: Designated L/S
L (Long) for operation with Coax cables longer than 225 feet on the transmit
side
S (Short) for operation with Coax cables shorter than 225 feet on the
transmit side (default)
JP2: Designated NORM/BOOST
NORM: For transmit level conforming ANSI.102 (default)
BOOST: For higher level transmit pulse