If using a Port Powered Converter requiring DTR Hi for power, make sure the DTR indicator is red, DTR (check marked). In a troubleshooting situation this will help you to determine if a communication problem is caused by the adapter, your equipment or the drivers.
HOW TO TEST LOOPBACK CABLE SERIAL
Materials used in this video: USB Serial converter: http. A loop-back test can verify if your USB to serial RS232 adapter has been installed properly and if it can send and receive data as intended. This describes a very basic test procedure to verify that your serial adapter is fully operational. If you are checking a RTS Controlled Converter or port: Select Options, then RTS (check marked) to set the RTS indicator red. USB Serial RS232 Loop-back test and troubleshooting. If it doesn't work, you've either built it wrong or the CSU/DSU isn't working properly. USING LOOPBACK OR WITHOUT LOOPBACK PAGE 6 OF 9 5.
If it does, you've successfully built the plug. Place the loopback plug into the T1 port and you should see the unit "synch" to itself by indicating either "Link" or having whatever is used for the WAN interface to show the unit now has sync. Test it on a "known good" router with a CSU/DSU (T1 interface). I'd be inclined to look into whether the receiver is enabled. And, as I said, for short cables it's probably not a problem. To be clearer: for a loopback test, you only need one resistor (since RXTX). Put the Cat 5 end into the crimper and verify all of the wires are pushed all the way into the pin slots and then crimp it down.ĩ. Wire one between RX+ and RX-, > and the other between TX+ and TX. You should now have 2 wires "looped" in the cat 5 blank end with pin 1 connecting pin 4 and pin 2 connecting pin 5Ĩ. Put one end of the second wire into pin 2 and bend it in half and put the other end into pin 5.ħ. Twist Wires on pins 2 and 4 together and pins 3 and 5 together, Figure 3.
Similar to Step 2 we will be twisting wires on the cable that connects to TB1 together. This test can be preformed at the communication box located at the display. Put one end of the first wire (either one will do) into pin 1 and bend it in half and put the other end of it into pin 4.Ħ. Step 3: Setup the Loopback test at the Surge Card input. If you are looking at it this way, the bottom slot is pin 1 and the top is pin 8.ĥ. The New monitoring session window should now be displayed. Alternate methods to start a new session are using the ‘Ctrl + N’ keyboard shortcut or clicking New on the toolbar. From the main menu select Session > New session. Identify the pin order on the Cat 5 end: hold it with the movable/press-side of the clip away from you and the metal contacts facing left. Launch the app and open a new monitoring session by following the next step. usually same colors (brown and brown/white, etc.)Ĥ. Cut off about 2 to 4 inches of a Cat 5 cableģ.