21
LIMITED-DISTANCE MODEM 56/64
4. Operation
4.1 General
The Limited-Distance Modem has ten DIP switches and
a 3-position loop activation switch. A table is attached to
the inside of the plastic cover showing the setup options
of the DIP switches.
NOTE
The ten switches are mounted on two blocks (as shown in
Figure 3-1
). The first block has six switches and the second
has four.
Table 3-1
relates to these switches as one group,
numbered 1 to 10.
4.2 Sync Mode
1. Set the XMT timing (INT, EXT, RCV) using S1,
S2, and S3.
2. Set the data rate to 56 kbps or 64 kbps using S4.
3. Set the carrier to be controlled constantly ON or
controlled by RTS (CNT) using S8.
NOTE
Switches 5, 6, and 7 are not relevant for sync operation.
