CL4424 User’s Manual
6/21/2005
7
1.3 CL4424
Interface
CL4424 transceivers support RS-232/ RS-485 (2-wire Half Duplex) protocols. In a cabled
environment, the RS-485 protocol can tolerate high noise and push signals over long cable
lengths. RS-485 cabling can also communicate as far as 4000 feet (1200m) and offer multi-drop
capability where up to 32 nodes can be connected. RS-232 cabling is suitable for distances less
than 100 feet (30.5m) and only supports point-to-point communications. CL4424 transceivers
offer performance improvements over a standard cabled link. Distance and multipoint
communications are greatly enhanced. A selection of RS-232/RS-485 can be made when
ordering the CL4424s.
Figure 1- RS-232/RS-485 CL4424 Front View
CL4424 Status LEDs
LED
Color
Description
Pwr Green
On indicates that the unit is powered up.
Link Red
On indicates the Client unit(s) and Server unit are in range of one
another. Link LED remains activated on Server units. Client units
activate the Link LED when in range of the Server unit.
Rx Green
When flashing, LED indicates CL4424 unit is receiving data.
Tx Red
When and flashing, LED indicates CL4424 unit is sending data.
RPSMA Antenna Connector
Status LEDs
Pwr
Link
Rx
Tx
