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Themis Computer
3-7
3. Specification
3.3
Environmental Specification
When measuring the operating environment air temperature for the USPIIi-1v, measure the air temperature as
close to the air intake port on the enclosure as possible.
Although the thermal characteristics of the USPIIi-1v are quite good, the maximum air flow should be across
the USPIIi-1v board processor section.
Watchdog Timers
Three Level Watchdog
Level One: Interrupt
Level Two: XIR
Level Three: POR Reset
Voltage Sensors
Mo5V Supply
XIR when outside of 4.75-5.25 V
POR when outside of 4.5V-5.5 V
Temperature Sensors
Two Level
Level One: XIR
Level Two: Shutdown
Table 3-5.
USPIIi-1v Operating Environmental Specifications
Description
Minimum Value
Maximum Value
Temperature Range
0 C
55 C
Humidity Range (relative
non-condensing at 104 F (40 C)
5%
95%
Altitude Range
-500 meters
9,843 feet (3,000meters)
Air Flow
300 lfm airflow at 50 C
Table 3-6.
USPIIi-1v Non-operating Environmental Specifications
Description
Minimum Value
Maximum Value
Temperature Range
-40 C
85 C
Humidity Range (relative non-con-
densing at 104 F (40 C)
5%
95%
Altitude Range
0 feet (0 meters)
38,370 feet (12000 meters)
Table 3-4.
Auxiliary Functions Specifications
Feature/Function
Specifications
Summary of Contents for USPIIi-1v
Page 1: ...USPIIi 1v Hardware Manual Revision B4...
Page 2: ......
Page 6: ...USPIIi 1v User s Manual Themis Computer...
Page 20: ...USPIIi 1v Hardware Manual 1 6 Themis Computer...
Page 62: ...USPIIi 1v Hardware Manual 6 6 Themis Computer...
Page 100: ...USPIIi 1v Hardware Manual A 32 Themis Computer...
Page 115: ...Themis Computer D 1 D DBoardDiagrams D 1 Baseboard Board Diagrams...
Page 126: ...USPIIi 1v Hardware Manual E 4 Themis Computer...