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Functional
Overview
ST112 SONET Transmission Test Set
2–3
Getting Started
Be sure to read and understand all of the Front and Rear Panel hardware details and descriptions
in this chapter and all of the Safety Instructions in Chapters 1 and 2 before applying power to the
ST112 SONET Transmission Test Set.
Before using the ST112 Test Set verify that it is properly set up and powered on, as follows:
1. Remove the unit from its shipping carton and place it on a hard firm surface.
2. Verify that the operating environment is within the limits detailed under the Environmental
Requirement section in this manual.
3. Allow approximately 2 inches (5 cm) clearance for cooling on the top and rear of the unit. The
two rear panel fans draw air into the
ST112 SONET Transmission Test Set
which is
exhausted through the top vents.
4. Wire the unit for a chosen application. Never exceed the maximum optical power limits (–10
dBm) listed on the front panel. Always cover the unused OC connectors.
CAUTION!
Signal levels greater than –10 dBm (negative 10 dBm) may damage the Optical Input
devices. Always pad the input level to less than –10 dBm.
5. Plug the unit into the appropriate AC Power source as follows:
AC Power Requirements
AC Voltage
Voltage Range
Frequency Range
Maximum Power
110 VAC
90 VAC - 135 VAC
47 - 63 Hz
250 Watts
220 VAC
180 VAC - 270 VAC
47 - 63 Hz
250 Watts
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