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RS-530 Line Monitor

Features / Benefits

Serial Data Breakout Box
* Interface - Supports Data Only for RS-530
* Data Rates -Up to 2.048Mbps
* In-Line Operation
* Visual indication of circuit operation
* Line Powered
* Compact and Easy to Install
* Excellent tool for field technician or service organizations


The RS-530 Line Monitor product provides a means for a technician to easily monitor the status of RS-530 TXD and RXD on a data only RS-530 circuit. Four light-emitting diode (LED) indicators provide a means for the technician to view the status of data of the attached DCE and DTE devices. 

All power to the RS-530-Line Monitor is supplied via the DCE and DTE ports. 

Connect the RS-530 Line Monitor in between the DCE and DTE device you wish to monitor.

Indicators and RS-530 Pins

Pin 2 - TXD (A) – Green LED – FROM DTE

Pin 3 - RXD (A) – Green LED – From DCE

Pin 14 – TXD (B) – Red LED – FROM DTE

Pin 16 – RXD (B) – Red LED – FRM DCE

Pin 7 – Passed end to end with No LED

NOTE: When LED indicators are ON, data is making frequent transitions between voltage levels corresponding to a logical 1 and a logical 0, indicating that data in some form is being received through the DCE/DTE. If this indicator is OFF, then the data circuit is constantly at one voltage level or is turned OFF. 

The RS-530 Line Monitor has a 3-year warranty and is housed in a sturdy metal enclosure

V35 breakout box network application diagram


Application In-Line RS-530 data activity monitor to obtain visual indication of the circuit operation
Capacity One Data Channel
Interface RS-530
Data Rates Up to 10Mbps
Data Format Data transparent at all data rates
Switches None
Physical Interface RS-530: Male DB-25 and Female DB-25
Pinned to RS-530 Standard
Power Source Line Powered from existing equipment - Draws
5ma - No AC power required
Indicators TXD(A), TXD(B), RXD(A), RXD(B

Operating Temperature....32º to 122º F (0º to 50º C)
Relative Humidity.............5 to 95%
Altitude............................0 to 50,000 feet

Dimensions Height ....... 0.50 inches (1.27 cm)
Width ........ 1.75 inches (4.44 cm)
Length ....... 4.00 inches (10.16 cm)
Weight 5 Ounces (0.142Kg)
Warranty Three Years, Return to Factory
Ordering Information: Part Number: 209000
Model: RS-530_LM
Description: RS-530 Line Monito
Included with each unit: 1) Installation Guide
  For further detailed technical information on this product, contact East Coast Datacom Technical Assistance toll free at (321) 637-9922.