Troubleshooting Putty Serial Connection Keep Dropping at 19200 Baud Rate
If you're experiencing issues with Putty's serial connection dropping at 19200 baud rate, you're not alone. This article will cover the key concepts related to this issue and provide detailed troubleshooting steps to help you resolve it.
Understanding the Basics of Putty and Serial Connections
Putty is a popular SSH and telnet client that can also be used for serial connections. A serial connection is a method of communication between two devices, where data is sent and received one bit at a time over a single communication channel. The baud rate is the speed at which data is transmitted in this type of connection.
In the case of Putty, the baud rate can be set in the serial connection settings. The default baud rate is 9600, but it can be changed to any value, including 19200. However, some users have reported that when using a baud rate of 19200, the connection keeps dropping.
Possible Causes of the Problem
There are several possible causes for this issue, including:
- Hardware issues: The issue could be caused by a problem with the device you're trying to connect to or the cable you're using.
- Software issues: The issue could be caused by a problem with Putty or the device driver for the serial port.
- Settings issues: The issue could be caused by incorrect settings in Putty or the device you're trying to connect to.
Troubleshooting Steps
Here are some troubleshooting steps you can take to resolve the issue:
Step 1: Check the hardware
Make sure that the device you're trying to connect to is turned on and that the cable you're using is in good condition. If possible, try using a different cable or device to see if the issue persists.
Step 2: Check the software
Make sure that Putty is up to date and that the device driver for the serial port is installed and working correctly. You can also try using a different serial terminal emulator, such as TeraTerm or Minicom, to see if the issue persists.
Step 3: Check the settings
Make sure that the baud rate is set correctly in Putty. If it is, try changing it to a different value, such as 9600 or 115200, to see if the issue persists. You should also check the settings on the device you're trying to connect to, as they may be causing the issue.
Step 4: Increase the flow control timeout
If the issue persists, you can try increasing the flow control timeout in Putty. This can be done by going to the "Connection" category in the settings and increasing the "Seconds between keepalives" value. This will cause Putty to send a keepalive packet more frequently, which can help keep the connection alive.
Step 5: Use hardware flow control
If increasing the flow control timeout doesn't help, you can try using hardware flow control. This can be done by enabling the "Hardware flow control" option in the "Serial" category in the settings. This will use the RTS and CTS signals on the serial port to control the flow of data, which can help prevent the connection from dropping.
In this article, we covered the key concepts related to troubleshooting Putty's serial connection keep dropping at 19200 baud rate. We discussed the possible causes of the issue and provided detailed troubleshooting steps to help you resolve it. If you're still experiencing issues, you may want to consider reaching out to the manufacturer of the device you're trying to connect to for further assistance.