Your L100 generates 2 log files when you enable Pin Pad and when you disable Pin Pad. Doing this multiple times will cause the l100's log to fill up, resulting in the L100 beeping rapidly and disallowing activation of the Pin Pad
To clear the L100's log, you will have to use pass-through mode via the spectrum pro in order to talk to the L100.
If you are using the VP 5300 (The Spectrum Pro II, has a silver bezel), please consult this guide instead:
Please download and install the latest version of our uDemo from our knowledge base:
https://atlassian.idtechproducts.com/confluence/display/KB/Spectrum+Pro+-+downloads
Connect your L100 to the spectrum pro, and connect your spectrum pro to the PC running the uDemo.
Please ensure that the L100 is connected and in awake mode for the following:
1. In the uDemo, under the "device" tab, there is a "send data command" option in the commands list
2. in the dialog box, enter the following command to enter passthrough mode: "724620010001" and press "Execute Command"
The results window should read "Send Command Response ASCII: ?'F ??"
3. to clear the log files of the l100, enter the command "78520151" and press "Execute Command"
The results window should be filled with the response from the log file dump. If you receive a "Send Command Fail Error Code: 0x3: time out for task or CMD" response, make sure your L100 is powered and awake.
4. to exit passthrough mode on the Spectrum Pro, enter the command "724620010000" and press "execute Command"