RTW TM3-Primus Bedienungsanleitung Seite 172

This should only be done in special causes and be per-
formed by a trained service technician! Once a readjustment has
been performed all analog references in the software are valid
only with their relative dB reading but not with the absolute dBu
reading.
Recalibration
1. Touch and hold the screen for more than 2 seconds. The Main menu
appears. Touch the Factory reset option.
2. The menu page with information about to proceed the factory reset
appears. Touch Factory reset.
3. TM3-Primus reboots and displays the area selection menu. Touch the
key for the german language countries (fi rst key).
4. The initial Domain selection menu page appears. Touch Analog RCA.
After displaying the info screen TM3-Primus will be ready for operation.
5. Access the Main menu again, touch Scale select and select the
Zoom1 scale. Touch Confi rm, then Store.
6. Feed an external calibration signal of +6 dBu/997 Hz to the analog
RCA input sockets.
7. Adjust the potentiometer on the rear side beside the analog inputs
until the upper edges of the PPM bargraphs exactly read 0 dB on the
displayed Zoom1 scale.
8. After readjustment, recall Factory reset and process the initial se-
quence to select your area and desired input domain.
EN-74 7 | Calibration
Manual | TM3-Primus