141001UA
2-4
Setup & Installation
P
ATTON
E
LECTRONICS
C
O
.
1084
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
“Switch on RS” or “Switch on Data” Mode (SW2-1)
SW2 position 1 determines the action required to turn the carrier on and off. When SW2-1 is
OFF
OFF
OFF
OFF
OFF
, carrier is turned on whenever the RS (pin4) interface lead is active. Carrier is removed
whenever the RS interface lead is inactive. Setting SW2-1 to
ON
ON
ON
ON
ON
will select “Switch On
Data” mode. Whenever data transitions are present on the TD (pin2) interface lead, the
carrier will be activated.
CTS Delay Selection When “Switch on RS” is Enabled (SW1-5,6)
SW1-5 and 6 determine the RS to CS (pin5) delay when SW2-1 is
OFF
OFF
OFF
OFF
OFF
.
SW1-5
SW1-6
CS Operation
ON
ON
Constant
OFF
ON
Delayed 0 mS
ON
OFF
Delayed 8 mS
OFF
OFF
Delayed 50 mS
Carrier Control (SW4-1)
SW4 position 1 determines Constant Carrier or Switched Carrier operation. Set SW4-1 to
OFF
OFF
OFF
OFF
OFF
if “Point to Point” continuous full duplex operation is desired. Set SW4-1 to
ON
ON
ON
ON
ON
if
“Multipoint” or Half Duplex Operation is desired.
Receiver Termination (SW4-5)
Termination of the Master 1084 (CTS LD-128K) and the farthest 1084 (CTS LD-128K) in a
“Multipoint” network is provided by setting SW4-5 to ON. Only the farthest 1084 (CTS LD-
128K) of the multiple slave 1084’s (CTS LD-128K) in the network should have the
termination Enabled. In “Point to Point” applications, termination should be Enabled on
both 1084’s (CTS LD-128K).
Transmit Clock Source (SW4-2,3)
SW4 positions 2 and 3 determine the source of the transmit clock. The following table
outlines the available options.
SW4-2
SW4-2
TX Clock Source
X
ON
SLave From RXC
ON
OFF
Internal
OFF
OFF
External (pin24)