This test measures the amplitude of the output signal from the PCM port at the DSX (Digital System Cross‑Connect) and receiving station.
1. Press the Measurements main menu key to activate the Measurements menu.
2. Press the Rx Signal submenu key to activate the Vpp measurement.
Note
The Vpp measurement is displayed in both Vpp and dBdsx.
The Vpp should meet the criteria of the service provider. When very close to the transmitter, the signal level must be 4.8 to 7.2 Vpp. Further from the transmitter, the Vpp will be lower. Figure: Vpp Out‑of‑Service Measurement shows a typical Vpp measurement display (which may not be the same as shown on your instrument). The frequency should be 1.544 MHz ± 50 Hz (± 32 ppm).
If the measurement meets the customer requirements for this system, then proceed to the BERT measurement.
