36Standard programs7. Enter the current date and time. Change the informationusing the arrow keys.8. Press OK to confirm the entry.The instrument then returns to "Instrument Setup".5.2.6 Sound settings1. Press Sound Settings in "Instrument Setup".The following options will be displayed:• All: Activates/deactivates a sound with a variable volume forevery function, with the exception of the timer.• Touch screen: Activates/deactivates a short sound withvariable volume every time the screen is touched.• Reading done: Activates/deactivates a short sound withvariable volume when the reading is done.• Timer: Sets short/long sound with variable volume whentimer has ended.• Startup: Activates/deactivates a startup melody with variablevolume when the test program is started.• Warning: Activates/deactivates a short sound with variablevolume if there is an error message.• RFID done: Activates/deactivates a short sound with variablevolume when a RFID transfer is done.• Shutdown: Activates/deactivates a short sound with variablevolume when shutting down.2. Select the required action.3. Press Setup and complete the required settings.4. Press OK to confirm the entry.5. Press OK to confirm the entry.The instrument then returns to "Instrument Setup".5.2.7 PC and printerThe DR 3900 features an Ethernet port and two USB ports on therear of the instrument, as well as one USB port on the front (referto Figure 1 and Figure 2, page 17). These interfaces can be usedfor exporting data and graphics to a printer, updating data and