85
2.048Mbps Wireless Modem
TECHNICAL: 0118 931 2233
⇒
To check the configuration of each unit:
1. From the Parameters menu, select
Parameters Info. Scree
n.
2. Verify that one unit is configured as Master and the other as Slave.
3. Verify that the following parameters are set identically on both units:
•
Network I.D.
•
Hopping Standard and Hopping Sequence
•
Modem Rate
⇒
To check RF Installation:
•
Verify that the TX and RX cables are connected correctly, and that the antennas are
aligned.
•
Check the TX radio High/Low power setting.
•
If you use a Diplexer:
∗
Verify that TX and RX connectors are not reversed.
∗
Verify that the One Antenna Standard (Diplexer) is the selected hopping sequence.
•
If you use the Transmit Power Amplifier (TPA-24):
∗
Check the 12 VDC power supply jumpers on the Modem transmitter.
∗
Check the power level of the Transmit Power Amplifier(TPA-24).
•
If you use an LNA, check the LNA power supply connection.
•
If all the above are correct, but there is still no radio link:
∗
Measure RF power at the RX radio connector.
∗
Measure RF power at the TX radio connector.
Problem 2: Poor performance of radio link
⇒
To check radio link performance:
4. From the main menu, select the
Counters and Tracers men
u.
5. In the Counters and Tracers menu, type 4 to clear the System Counters and the Channel
Tracer.
6. Type 2 (Display Channel Tracer RSSI per channel) to check RSSI per channel.
