171
Selecting and Using "Other" Features
Running Self Test
If Option UH3 is fitted, connect Clock Out to Clock In and Data Out to
Data In.
SDH Loopbacks:
Connect the STM-1 IN port to the STM-1 OUT port.
Optical Interface Loopbacks:
Connect the IN port to the OUT Port.
CAUTION If Option URU, STM-1/STM-4 Optical Interface, is fitted, connect an
Optical attenuator, set to 10 dB, between the IN and OUT Ports. Failure
to attenuate the optical signal from option URU could result in
damage to the optical receiver.
NOTE If Option USN, UKT or 130, Dual Wavelength Optical Interface, is fitted,
connect the 1310 nm OUT port to the IN port. Do not connect the 1550
nm OUT port to the IN port.
NOTE If any or all of these connections are not made the HP 37717C will FAIL
Self Test.
4 Press to activate the Self Test. TEST STATUS
[RUNNING] will be displayed.
The information pertaining to TEST TYPE, TEST NUMBER and
SUBTEST NUMBER will change as the Self Test progresses.
If the HP 37717C is functioning correctly, after a time of between 15
minutes and 1 hour, TEST STATUS [PASSED] is displayed.
If TEST STATUS [FAIL nnn] is displayed, the HP 37717C should be
returned to a service office for repair.
FAIL Error Numbers are listed and defined in the Self Test Error
Codes manual (part number 37717-90412).
RUN/STOP
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