User's Manual

Vyyo Installation Guide
www.vyyo.com
WMTS US Port Mapping – p. 117
Use a spectrum analyzer and RF power meter to perform tests.
A typical basic RF setup is illustrated in Figure 9-1. Please use the specific block
diagram for your system when you are troubleshooting problems
9.2.2 Checking the Downstream
Perform the following steps to isolate a problem on the downstream channel of the RF
frontend:
a. On the transmitter RF power meter -
- Check the transmit power on the downstream transmitter, to verify the
RF output
- Test the reflected power (SWR), to verify that the transmitter is connected to the
coaxial system correctly.
b. WMTS
- Measure the output power of the demodulator card. Use a spectrum
analyzer tuned to 44 MHz, with a span of 20 MHz. . The power
should be 10 dBm ±5 dB.