HT instruments HT157 - Manual (Page 52)

HT155 - HT157
EN - 50
5. Press the “Browse” key and select the folder …\Sound Meter usb driver\ inside the
USB pen drive provided (after saving the content of the pen drive on the HD of the PC).
Press “Next”
6. Select the file with extension “ch375wdm.inf” and proceed with “Next”
7. The installation procedure of the driver is started by the PC
8. Press “Finish” to stop the installation procedure of the USB driver