Description

AD-D9M-SLB – Serial Loopback PlugThe AD-D9M-SLB Serial Loopback Plug is a passive DB9 Male RS-232 loopback tester designed for testing, troubleshooting, and verifying 9-pin serial communication ports. Simply plug the loopback into a DB9 female serial port to create an internal connection between transmit and receive signals, allowing technicians and software to test serial communication without connecting an external device.FeaturesPart Number: AD-D9M-SLBConnector: DB9 Male, 9-pin D-SubInterface: RS-232 SerialDesign: Passive loopback plugNo external power requiredCompact design for convenient field and bench testingIdeal for serial-port diagnostics and troubleshootingProvides quick verification of transmit/receive signal pathsLoopback ConnectionsThe AD-D9M-SLB uses internal connections to loop selected RS-232 signals back to the serial port:1-4 | 6-92-3 | 7-8These connections allow compatible serial test software and diagnostic equipment to verify signal continuity and communication pathways.ApplicationsPerfect for:RS-232 serial port testingComputer and equipment diagnosticsField service troubleshootingBench testing and repairManufacturing quality controlSerial-port continuity testingEquipment installation and maintenanceTroubleshooting legacy communications equipmentHow It WorksThe loopback plug connects directly to a DB9 Female RS-232 port. Its internal wiring routes transmitted signals back to the appropriate receiving inputs, allowing diagnostic software or test equipment to determine whether the serial port is functioning properly.Because the AD-D9M-SLB is passive, it contains no active electronics and requires no external power supply.American Radio Supply AD-D9M-SLBA simple, reliable tool for RS-232 serial port testing, diagnostics, and service.