HP NR3610 Quick reference guide

HP drives industry standards for rugged computing
Executive summary............................................................................................................................... 2
Test descriptions .................................................................................................................................. 3
Summary ............................................................................................................................................ 7
For more information............................................................................................................................ 7

Executive summary
Hewlett-Packard Company has introduced a rugged line of notebooks and tablets built for
performance, mobility, and versatility to survive the most demanding needs in tough environments.
With the introduction of the HP nr3600 Rugged Notebook and the HP tr3000 Rugged Tablet PC,
HP offers excellent computing capabilities to highly mobile users in extreme conditions.
These mobile PCs are ideal tools for users who often work in remote and demanding environments
where computers must be able to withstand long-term vibration, rain, dust, and extreme operating
temperatures.
Universal compliance testing standards do not yet exist for this class of product in the industry today.
Therefore, in order to best meet the needs of customers seeking this more rugged solution for portable
computing, HP performs extremely rigorous compliance testing. In fact, the qualification procedures
for the HP Rugged Notebook and the HP Rugged Tablet PC are setting the industry standard.
HP follows test specifications from several industries, including the trucking industry and the U.S.
military. The standard frame of reference for rugged products in general is the U.S. Military
Specification for ruggedness, also referred to as MIL-STD 810F specification (or MIL spec 810F). The
MIL spec 810F is not a specification for computing devices only; it covers a broad range of devices
procured by the U.S. military. For this reason, HP computing devices are typically tested to applicable
specifications only. These specifications include Vibration, Temperature, Sealing, Humidity, Low
Pressure, ESD, and Drop (Shock).
Both the HP Rugged Notebook and the HP Rugged Tablet PC devices comply with MIL-STD-810F and
offer an Ingress Protection rating of IP54, which specifies the level of environmental protection a
device provides against liquids and solid objects, like rain and dust. Only the most durable systems
survive this series of tests, which simulate real-life situations in the field.
This white paper lists the standard tests and technical specifications to which the HP Rugged
Computing products conform.

Test descriptions
Both the HP Rugged Notebook and HP Rugged Tablet PC are intended for the most demanding
environments and as such undergo the following tests. Because of its different usage model, the
HP nr3600 Rugged Notebook undergoes four additional tests: 2 Vehicle Vibration tests, the Vehicle
Shock test, and the Vehicle Crash test. The post-test pass and survival criteria are as follows:
•No program data is lost
•Unit meets Water Resistance specification
•Unit functions (user can run applications)
Table 1. HP Rugged Notebook and HP Rugged Tablet PC environmental test criteria
Test name Standard Test description
Standalone unit
Shock (Drop) MIL-STD 810F,
Method 516.5,
Procedure IV,
Modified
Unit is dropped from a height of 3 feet to 2 inches of plywood over concrete
onto each face, edge, and corner (26 contact points).
Unit is nonoperating; display is closed; media bay contains CD-ROM disk;
up to 2 units may be used; room temperature is about 20°C (68°F).
Unit is powered on after each drop to check functionality.
Unit passes if there is no loss of program data, the unit meets the Water
Resistance specifications, and the user can run applications.
Vibration I
(nonoperating)
MIL-STD 810F,
Method 514.5,
Procedure I,
Category 24
Unit is placed on a vibration table with display facing up and then is
subjected to a series of 3 tests for each of 3 orientations (axes) for
60 minutes each: front to back, side to side, and up and down.
Unit is nonoperating; room temperature is about 20°C (68°F).
Unit is powered on after testing.
Random profile is studied.
Vibration II
(nonoperating)
MIL-STD 810F,
Method 514.5,
Procedure I,
Category 24
Unit is placed on a vibration table with display facing up and then is
subjected to a series of three tests for each of three orientations (axes).
The random vibration test lasts for 60 minutes and the sinusoidal vibration
test lasts for 30 minutes each per axis: front to back, side to side, and up
and down.
Unit is nonoperating; room temperature is about 20°C (68°F).
Unit is powered on after testing.
Sine profile is studied.
Vibration III
(operating)
ASTM 4169-99
Truck Assurance
Level II, Schedule E
Unit is subjected to vibration for a duration of 90 minutes.
Unit is operating.
Humidity MIL-STD 810F,
Method 506.4,
Procedure II, Time
modified
Unit is placed in a humidity chamber for ten 24-hour cycles at
30°C at 85% relative humidity (RH) noncondensing and 60°C at 95% RH
noncondensing.
Unit is operating, accessing hard disk drive.
Water resistance MIL-STD 810F,
Method 506.4,
Procedure II, Time
modified
Unit is placed in a rain chamber that supplies simulated rain at a rate of
no less than 4 inches per hour.
Unit is tested for 10 minutes on each of 6 specific contact points with the
display open.
Unit is nonoperating.
Continued

Test name Standard Test description
Dust and water IEC 60529 IP-54 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
High operating
temperature
MIL-STD 810F,
Method 501.4,
Procedure II
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.
Low operating
temperature
MIL-STD 810F,
Method 502.4,
Procedure II,
Modified
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.
Low start
temperature
Twinhead PA STD
Appendix 13
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.
High storage
temperature
MIL-STD 810F,
Method 510.4,
Procedure I
Unit is placed in a thermal chamber at 75°C for seven 24-hour cycles.
Unit is nonoperating.
Low storage
temperature
MIL-STD 810F,
Method 502.4,
Procedure 1
Unit is placed in a thermal chamber at –55°C for one 24-hour cycle.
Unit is nonoperating.
Temperature shock MIL-STD 810F,
Method 503.4,
Procedure 1
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.
Low pressure MIL-STD 810F,
Method 500.4,
Procedure I,
Procedure II
modified
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

Test name Standard Test description
Mechanical life
(for HP nr3600
Rugged Notebook)
HP internal Unit mechanical components are moved (cycled) the number of times they
are expected to perform in the 5-year life of a rugged product.
Display hinges
Power
Battery pack
Hard drive connector
RJ-11 jack:
RJ-45 jack:
“D” connectors
USB port
Keyboard keys
Vehicle cradle
Antennae
Display harness
CTO connectors
EL keyboard panel
Touchscreen
5,200 (times) per year
1,300 per year
1,000 per year
750 per year
1,300 per year
1,040 per year
1,040 per year
1,040 per year
100,000 per year
2,600 per year
5,200 per year
5,200 per year
2 per year
Maintain at least 2 units for
7,000 hours of use
Repeated writing of
100,000 characters at a specific
pressure and stylus type
Mechanical life
(for HP tr3000
Rugged Tablet PC)
HP internal Unit mechanical components are moved (cycled) the number of times they
are expected to perform in the five-year life of a rugged product.
Power
Battery pack
2nd battery pack
RJ-11 jack
USB port
Keys
Antenna
LCD with touchscreen
1,300 per year
4 per year
520 per year
1,300 per year
1,040 per year
500,000 per year
5,200 per year
Repeated writing of
100,000 characters at a specific
pressure and stylus type
Continued

Test name Standard Test description
Bench handling HP internal Unit is dropped on each of the 4 edges of the base of the product on a
typically used bench surface.
Operating mode: Each edge is dropped 25 times at 10-second intervals,
from a height of 7 cm.
Nonoperating mode: Each edge is dropped 50 times at 10-second intervals,
from a height of 10 cm.
Electrostatic
discharge (ESD)
IEC 801-2, Contact
discharge; 4kV and
8kV; air discharge:
15kV
Unit external contacts, connectors, and screws are subjected to 5 discharges
per polarity per kV, first with no external power and second with external
power, and then with peripherals.
At ± 4kV: No noticeable effects
At ± 8kV: No data or program loss; unit reboots, resets
At ± 15kV: No component failure (hard error)
Unit is operating, accessing disk.
Removable hard drive
Handling while
outside unit
Bench handling
specification
Removable hard drive is checked after the drive is dropped onto a typical
bench surface from a height of 5 cm, 25 times, with a time interval of
5 seconds between drops.
Drive is tested while removed from unit and therefore is nonoperating.

Table 2. Additional HP nr3600 Rugged Notebook tests (unit in vehicle cradle)
Test name Standard Test description
Vehicle vibration
(operating)
ASTM 4169-99
Truck Assurance
Level II, Schedule E
Unit is subjected to vibration for 90 minutes across each of the 3 axes
described in the earlier Vibration test.
Unit is operating, accessing disk.
Vehicle vibration
(contact continuity)
MIL-STD 810F,
Method 514.5,
Procedure I,
Category 24
Unit is subjected to 2 tests across 3 axes: 1 hour per axis and 30 minutes
per axis.
Unit is nonoperating.
Vehicle shock
(contact continuity)
SAE J1455 Pothole
Shock (4.10.3.4)
Unit is mounted in a vehicle and subjected to a total of 18 shocks of a
20-millisecond duration, such as might be encountered by sudden
acceleration, braking, or turning.
Vehicle crash SAEJ1455, Crash
Shock (4.10.2.4)
Unit is subjected to 4 lengthwise 30-mph vehicle crash simulations in each of
4 orientations for a force of 20G and duration of 120 milliseconds with one
rebound.
Summary
As can be seen in the detailed test descriptions, HP testing standards provide for outstanding
ruggedness verification. By conducting such rigorous qualification tests for its rugged systems, HP is
driving industry standards to best ensure that the needs of this special class of customers are met.
For more information
http://www.hp.com
© Copyright 2004 Hewlett-Packard Development Company, L.P. The information
contained herein is subject to change without notice. The only warranties for HP
products and services are set forth in the express warranty statements
accompanying such products and services. Nothing herein should be construed as
constituting an additional warranty. HP shall not be liable for technical or editorial
errors or omissions contained herein.
5982-5747EN, August 2004