User's Manual

INSTALLATION AND MAINTENANCE MANUAL
LYNX.sc E1 FAMILY
SPREAD SPECTRUM RADIOS
SEPTEMBER 1999
PAGE 3-36 SECTION 3: INSTALLATION & ADJUSTMENTS
obstruction)
- Weather (inversion layers, ducting and multipath)
- Antenna feed (coaxial/connector) problem
The LYNX.sc radio requires professional installation. Don’t
forget that the transmitter output power adjustment on the
LYNX.sc radio effects the RSL. Depending on EIRP limits (if
any), path distance, and antenna gain, you may need to adjust
the output transmit power to the proper level before putting the
radios in service.
If radio synchronization has been established, the radio link
may be able to provide some limited communications over the
link. It can be helpful to establish voice communications from
one end of the radio link to the other using the Orderwire
feature of the LYNX.sc radio. See Section 3.14.1 for details.
If RSL is lower than anticipated, recheck the path clearance and transmission line as these are the
typical causes of low RSL. Radio operations can be verified by connecting radios back-to-back with
attenuators (40-60 dB), (see Section 4.9). If the problem remains, consult Section 4 of this manual
for troubleshooting techniques which will help determine the source of the problem.
10. Once RSL is verified to be near the predicted value, the radio link is ready for data. You
may verify error-free operation by using the loopback function, as described in Section
3.13.2 or BER testing, as described in Section 4.10. If the link is not error-free, see Section
4.7 for troubleshooting guidelines.
11. Once radio performance is verified and acceptable, with loopback mode turned off (press
the ENABLE button, the LED will turn off), the LYNX.sc radios can now be put into service
with the intended E1 traffic. Connect the E1 signal to the CEPT-1 Interface BNC connector.
Refer to Section 3.11 for configurations of these connections. With E1 traffic applied in both
directions, all front panel LEDs, except for POWER and any unused E1 ports, will be off. If
LEDs are lit, consult Section 4 of this manual.
12. Now that the link is operational, other services can be connected including Orderwire,
Diagnostics, Alarms and Aux Data (Service Channel). Consult Section 3.14 for details on
these connections.