HELPFUL DESIGN HINTS. Consider the height restriction drawing since the tabs where the I/O panel thumbscrews attach can interfere with components on the accessory card.
The I/O Panel should be of a sturdy design so it will transfer sufficient force to cause the frontplane connector to seat. When testing the mechanical design, remove the metal chassis and watch the connector as the thumbscrews are tightened. It is possible to design a panel such that the thumbscrews will go all the way in, yet the frontplane connector will not move.
Make sure that the I/O panel has as many holes for airflow as possible. The air will flow along the long dimension of the accessory board. For most effective use of this airflow, lay the chips out with their long dimension perpendicular to this airflow. Also, lay your "hot" chips as close to the I/O panel as possible.
Be sure to mask off the annular ring around the thumbscrew's hole and to use an inside star washer between the thumbscrew and the I/O panel. This will ensure that there is a solid ground path between the I/O panel and the chassis of the HP 150.
I/O Panels with a connector should have the ground plane split near the I/O panel to bypass the connector shield to the I/O Panel ground. This will prevent high frequency noise (like ESD) from entering the system.
I/O PANEL DESIGN. Accessory cards not requiring an I/O Panel should be based on the board blank drawing titled "Board Blank - no I/O Panel" with two extractors and two extractor retainer pins to remove the accessory card from the HP 150. Drawings for the extractors as well as the extractor retainer pins are provided in this manual.
If an I/O panel is required, all the required dimensions may be obtained from the drawings enclosed. Please note that the accessory card fits under the L-bracket for the design presented. The I/O Panel should be solid and sturdy since the force from the thumbscrews must be transmitted to the frontplane connector in order to fully insert the connector.
Hardware Subsystems
LIST OF VENDORS
I
CAUTIONI
Parts may be available from the following vendors. HP does not guarantee or warrant any of the following parts or vendors.
o Frontplane Connedor Vendor: Amp
Harrisburg, Pa.
Vendor Part Number: 1-102584-0
o Thumbscrew
Vendor: Precision Metal 3402 Enterprise Ave.
Hayward, Ca 94545 (415) 881-1401
Vendor Part Number: 45641-00001-2 (also HP Part No.)
Use the drawing in figure 3-24 to set this part up with its own part number.
This will prevent any possible changes to the part from affecting you. The drawing will also allow the part to be set up with any vendor you wish.
o E-Ring Retainer
Vendor: Truarc Retaining Rings Division Waldes Kohinoor, Inc.
41-16 Austel Place
Long Island City, NY 11101 (212) 392-3100
Contact the factory for the distributor near you.
Vendor part number: Truarc X-5133-11 H.
o L-Bracket
Vendor: Pike Tool and Grinding Inc.
4205 High Country Road
Colorado Springs, Colo. 80907 (303) 598-9611
Vendor Part Number: 45641-00001-1 (also BP Part No.)
Use the drawing in figure 3-25 to set this part up with its own part number.
This will prevent any possible changes to the part from affecting you. Again, the drawing is provided for this part if you wish to set it up yourself.
o Accessory Card Extractor (figure 3-26) Vendor: Trend Plastic
1245 Laurelwood Rd ..
Santa Clara. CA. 95050 (408) 727-5797
Vendor Part Number: 0403-0473 (also HP Part No.)
o Accessory Card Extractor Retainer Pin (figure 3-27) Vendor: Drivelock, Inc.
Sycamore, IL.
(815) 895-8161 Vendor Part Number: 9945
One possible distributor for this part is:
Bearing Engineers, Inc.
1250 Space Park Way Mountain View, CA. 94040
(415) 969-1155
The Bearing part number is 3-0.330-R-SP.
I/O PANEL PAINT SPECIFICATIONS
~ope
This specification establishes the requirements for pigment composition, to achieve a color in HP's Corporate Color Program.
Requirements
o Pigments used to manufacture a color should be from the approved Hewlett-Packard List, "Pigments Used to Achieve the Corporate Color".
o Pigment substitutes may be required for specific type of material that uses higher temperature, (such as plastic) to be produced in a Corporate Color.
a. Use pigment with equivalent physical and performance properties as recommended on the pigment list.
Hardware Subsystems
b. Required physical and performance properties of pigments:
1. Heat Resistance
2. Bleeding Characteristics
3. Chemical Resistance
4.
Exposure Performance (Ultra-violet,etc.)Quantitative
o Pigment Composition (approximation - adjust ~ for tinting purposes)
a. Paint Pigments for Parchment White Case, Visual Color Standard No. 6009-0130:
Trace
%
I8.55'1
.31 ~
Trace....!!
~
Lampblack
Titanium Dioxide White Yellow Iron Oxide Red Iron Oxide
Gloss Standard: 18+-3 Gloss Units at 85 degree
/-b. Paint Pigments for Cobblestone Gray Accent, Visual Color Standard No. 6009-0133:
8.0
I
Lampblack28.4
Titanium Dioxide White 10·2 ~ Yellow Iron Oxide4.5
~ Red Iron Oxide48.3 ,;
OtherGloss Standard: 18+-3 Gloss Units at 85 degree
/-Drawings
Included in this section are the following drawings:
o I/O Panel
o Retainer Thumbscrew o L-Bracket
o Accessory Card Extractor o Accessory Card Extractor Pin
o Board Blank With I/O Panel (Accessory Card Details) o Height Restriction (Accessory Card Clearances)
. 0 Board Blank - No I/O Panel
o Accessory Card Schematic
W
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i
FINE
= --- ,--- -- I ~-l
- - - - It
I.
I '<
I I
I I
\. .. )
L_~_---"
It)
~
1
Hardware Subsystems
I I I ' , I ' ,
I I
i:
I 'SSC,TIOoJ Po. A
Figure 3-26. Accessory Card Extractor
Figure 3-27. Accessory Card Extractor Retainer Pin
q 138GJ
Figure 3-29. Height Restriction Drawing (Accessory Card Clearances)
' 2.9
r
8.Q7LL:-
66 .36Hardware Subsystems
!.oR
<I+PLCS)
-il,2.·54TYP
L---f--#;trn .. ,....,.m+Tf'I.'1:;";.= ... Tf'I.'1 .. =>ri:'-r---254.0 244.6 ---.,..---+ •• t+tt't++++++++++H+++ ++ .. tt++ ++t.'"
7.62 2.2.7.0
-NOTE
No components allowed in shaded area. Also do not run any traces in the
shaded region on the circuit or component side.
.8'1¢
C 70 PLCS)
3.0~n-~
(2PLCS) I (tPlC$)
2.50 UNPLAH()
(2.PlCS)
_ _ ;fi~18.6} 11.0 TYP
O--D-AT-U-M---+t++:---e-9.I-J,JJ,...:I-++'!>.-~-- S:OR "PLCS 1
15.0 ----+~
-11.2. 93.1
6.2. 98.1
2.2. 102.1
o
10+.3COMPONENT SIDE VIEW
Figure 3-30. Board Blank - No I/O Panel
This is page is blank.
+5
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