Advertisement
Test name
Standard
Dust and water
IEC 60529 IP-54
High operating
MIL-STD 810F,
temperature
Method 501.4,
Procedure II
Low operating
MIL-STD 810F,
temperature
Method 502.4,
Procedure II,
Modified
Low start
Twinhead PA STD
temperature
Appendix 13
High storage
MIL-STD 810F,
temperature
Method 510.4,
Procedure I
Low storage
MIL-STD 810F,
temperature
Method 502.4,
Procedure 1
Temperature shock
MIL-STD 810F,
Method 503.4,
Procedure 1
Low pressure
MIL-STD 810F,
Method 500.4,
Procedure I,
Procedure II
modified
Test description
Unit is subjected to dust and then to water splashing.
An IP number is assigned, specifying the environmental protection afforded by
enclosures around electronic equipment. These ratings refer to specific tests.
The IP number is made up of 2 digits, each signifying a separate component.
For example, in the rating IP44 the first digit refers to the protection against
solid objects such as dust, and the second digit refers to the protection against
liquids. The higher the number, the better the protection.
1st digit: 5—Protected against dust, limited ingress (no harmful deposit)
2nd digit: 4—Protected against splashing water from all directions
Unit is placed in a thermal chamber to operate at +60°C for five 24-hour
cycles.
Unit is operating, running a script file from a DOS window to keep resources
running at 100% load.
Unit is placed in a thermal chamber at less than -–23°C for one 24-hour
cycle.
Unit is operating, running a script file from a DOS window to keep resources
running at 100% load.
Unit is placed in a thermal chamber for 1 hour at 0°C, then powered up and
the display checked for visibility and unit functionality, and then powered
down, for a series of 5 power-up tests.
Unit is placed in a thermal chamber at 75°C for seven 24-hour cycles.
Unit is nonoperating.
Unit is placed in a thermal chamber at –55°C for one 24-hour cycle.
Unit is nonoperating.
Unit is alternately placed in 2 thermal chambers, one at –55°C and the other
at +75°C, for 4-hour periods with no more than 5 minutes taken to change to
the other chamber.
Unit is nonoperating.
Procedure I: First, unit is placed in a vacuum chamber at room temperature
and held at PSIG of 10,000 feet for 1 hour.
Unit is nonoperating.
Procedure II: Unit is then placed in a vacuum chamber at room temperature
and brought to PSIG of 30,000 feet at a rate of up to 2,000 feet per minute.
Unit is operating, accessing disk.
Continued
Advertisement
