12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 441
SSU-2000 Shelf Specifications
Operating Conditions Specifications
The unit operates at specified parameters in the operating conditions summarized in
Table F-2.
Table F-2. Normal Operating Conditions
Parameter Minimum Maximum Units Notes
Supply Voltage –38 –65 Volts DC
Temperature 0 50
°C
1
Temperature Rate of Change – 8.3
°C/Hr
Relative Humidity 5 85 % 2
Altitude -200 ft. 13,000 ft. feet 3
Inlet air temperature, limited convection 15 ft./min.
Non-condensing over specified temperature range.
The maximum operation ambient temperature shall be reduced by 2C for every 984 ft.
altitude above 4,921 ft.
The unit is not damaged when exposed to the levels specified in Table F-3, but
performance is degraded. The unit returns to specified performance upon returning
to specified operating conditions.
Table F-3. Exceptional Operating Conditions
Parameter Minimum Maximum Units Notes
Supply Voltage: (48 vDC) –38 –75 Volts, DC 1
Temperature –5 50 °C 2
Relative Humidity 5 90 % 3
1. The unit is not damaged if the polarity on the power leads is reversed.
2. At 30
°C max/hour rate of change.
3. Non-condensing.
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