DeLOCK 87713 2xDB9-stik sort

This RS-232 tester by Delock is a compact, passive connector device that allows quick verification of DB9 serial connections without an external power supply. Equipped with two DB9 connectors in a black housing, the tester displays the logical state of each data line via nine LEDs (red/green/off) and helps identify interruptions, crossed wires or short circuits.

Advantages

The built-in LEDs provide a clear, immediate indication of signal states on all relevant RS-232 lines. No external power source is required, which simplifies portable testing and installation checks. The compact black DB9-to-DB9 form factor makes it easy to carry and connect inline between devices.

Suitable for

• Quick verification of RS-232 DB9 cable wiring
• Troubleshooting serial port connections on industrial equipment
• Field checks and on-site maintenance of devices with DB9 interfaces
• Detecting wire breaks, crossed pairs and short circuits in serial lines

Key specifications

• Brand: DELOCK
• Model / MPN: 87713
• Connector 1: DB9
• Connector 2: DB9
• Product colour: Black
• Weight: 0.055 kg
• Function: Passive RS-232 connection and interface tester with 9 LEDs (red/green/off)

How to use

Connect the tester between two DB9 serial ports or insert it inline with a DB9 cable and the device. Observe the nine LEDs to determine the logical level of each RS-232 line; red and green indicate different signal states while an unlit LED indicates no signal. Use the LED pattern to identify wiring faults such as open circuits, crossed wires or shorts.

Recommendations

The tester is intended for diagnostic checks of RS-232 DB9 connections. Avoid exposure to moisture and excessive mechanical stress. Use it only on powered RS-232 ports according to device specifications and disconnect devices before performing any invasive repairs.