Patton electronics 2450 User Manual page 4

S1 SUMMARY TABLE
Position Function
S1-1 Clock Mode
S1-2 Clock Mode
S1-3 Circuit Assurance
S1-4 RTS
S1-5 Line Rate
S1-6 Front Panel Switches
S1-7 DTE Loop Control
S1-8 Receive RDL
Switches S1-1 and S1-2: Clock Mode
The setting for switches S1-1 and S1-2 determines the transmitter
clocking mode for the Model 2450.
S1-1 S1-2 Clock Mode
On Off External (DTE)
Off On Network (Looped)
Off Off Internal (Master)
On On Campus Clock
5
Factory Default
}
Off
Network
On
Off Disabled
On Forced On
Off 56 kbps
Off Enabled
On Disabled
Off Enabled
Description
Transmit clock derived
from terminal interface
Transmit clock derived
from the received line
signal; Use this mode
for Dedicated DDS
operation
Transmit clock derived
internally
Transmit clock derived
from received line
signal. Allows remote
device (in campus
clock mode) to initiate
V.54 loopback. For use
only in campus short-
haul configuration.
(Note: Local device
must be in internal
clock mode.)
Switch S1-3: Circuit Assurance
On dedicated circuits, the transmitter and the CTS output can be
configured to go On only when a working communication circuit is
established. If Circuit Assurance is used, enable it on only one end of
the communication link.
Circuit
S1-3 Assurance
On Enabled
Off Disabled
Switch S1-4: RTS
The RTS input can be forced on, ignoring the terminal's RTS
signal. RTS controls the transmitter by either sending the user's data
or sending an idle code.
S1-4 RTS
On Forced On
Off Follows
DTE Signal
Switches S1-5: Data Rate
This switch controls the data rate on the line (RJ-48S port) and
must match the speed of your digital service.
S1-5 Setting
Off 56 kbps
On 64 kbps
6
Description
CTS will go low and the
transmitter will be held off if the
receiver is in the No Signal state
or CD is low
The transmitter and CTS will
operate without regard to the
receiver state
Description
Transmitter is always ON
The RTS input controls the
transmitter