User's Manual

INSTALLATION AND MAINTENANCE MANUAL
Tsunami FAMILY
SPREAD SPECTRUM RADIOS
SEPTEMBER 1999
SECTION 2: PRODUCT DESCRIPTION PAGE 2-15
2.3.4 Controls
Link test transmits either an internal signal and re-transmits this signal back
at the far-end radio. The near end then receives the signal. This is very
useful for testing because the test signal can be monitored at the near-end
and the quality of the entire link can be determined without anyone going to
the far-end radio location.
ERROR
When lit RED, this indicates that bit error(s) occurred while in link test mode.
ENABLE
This is a push-button switch that executes the link test mode. Link test is initiated by
pressing and holding this switch for approximately 3 seconds. Once in link test
mode, the LED which is embedded in the switch is illuminated YELLOW to indicate
that the test is in progress. The LED on the near-end radio flashes while the far-end
is solid. Link test is disabled by pushing and releasing the ENABLE button at either
the near-end or far-end radio.
Enabling link test will interrupt traffic. This is an out-of-service test.
DISPLAY
FAR END
This push-button provides the capability to determine alarms and status of the far-
end radio. When pressed and held, the alarm and status LEDs and the RSL test
point correspond to the far-end radio’s status and RSL value. This can be used for
installation, maintenance and troubleshooting. When the LED on this switch is
flashing, no far-end information is available. This typically indicates that there is no
link between near-end and far-end radios.