Symmetricom 5071A, Operating And Programming Manual

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Safety Considerations and Warranty
Operating and Programming Manual iii
Indicates terminal is connected to chassis when
such connection is not apparent.
Indicates Alternating current.
Indicates Direct current.
Rack Mounting
The Model 5071A Unit is designed for mounting in a standard 19-inch (48.26 cm) rack.
Follow the rack manufacturer's instructions for mounting the Model 5071A Unit while
observing the following guidelines:
Elevated Operating Temperature: If the Model 5071A Unit is installed in a
closed or multi-unit rack assembly, the ambient temperature of the rack
environment may be greater than the Model 5071A Unit's Maximum Operating
Temperature of 50°C/122°F. Install the Model 5071A Unit in an environment
that is compatible with the Model 5071A Unit 's operating temperature range,
which is 0 °C to 50 °C, or 32 °F to 122 °F
Mechanical Loading: Mount the Model 5071A Unit so as to avoid uneven
mechanical loading that could cause hazardous conditions.
Circuit Overloading: Observe the power ratings on the Model 5071A Unit 's
nameplate and the additional load the Model 5071A Unit may place on the
supply circuit. Overloading the supply circuit may adversely affect the supply
wiring and over-current protection.
Reliable Earthing: Maintain reliable earthing (grounding) of rack mounted
equipment. Pay particular attention to supply connections other than direct
connections to the branch circuit (e.g., use of power strips).
CAUTION
Damage to equipment, or incorrect measurement data, may result from failure to heed a
caution. Do not proceed beyond a
CAUTION sign until the indicated conditions are fully
understood and met.
Whenever it is likely that the protection has been impaired, the instrument must be made
inoperative and be secured against any unintended operation.
If this instrument is to be energized via an autotransformer (for voltage reduction) make
sure the common terminal is connected to the earthed pole terminal (neutral) of the power
source.
Instructions for adjustments while covers are removed and for servicing are for use by
service-trained personnel only. To avoid dangerous electric shock, do not perform such
adjustments or servicing unless qualified to do so.
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