8 7 6 l, 3 DRW NO. SH REV | | v C 923-3000 -500 1] A ZONE [REV SCR NUMBER DESCRIPTION BY DATE APPROVED ALL A | BWAG-972528.VERO1 NEW RELEASE HCL-PG | 04/29/2013 | B.WANG 9 2 am XCede HD BACKPLANE MODULE MALE STANDARD LOAD l 3 PAIR x 6-POSIT ION NOTES: 1. REFER TO TB-2235 FOR XCede HD PRODUCT SPECIFICATIONS. (2) NOTCH DESIGNATES ROW A SIDE OF SHROUD. NOTCH FEATURE ON OPPOSITE SIDE FROM PART MARKING. 3. PART MARKING AS FOLLOWS: LINE 1: ATCS AND DATECODE (ATCS YYWW). LINE 2: MODULE PART NUMBER (923-####-###). LINE 3: WORK ORDER NUMBER (#isaaaaai) WHERE x DENOTES MANUFACTURING LOCATION. lk. PLATING THICKNESS OF SIGNAL CONTACT AND GROUND CONTACT IS DETERMINED BY PLATING CODE, SEE PART NUMBER TREE SHEET 1. S. REPAIR PROCEDURE FOR MODULE, SEE TB-2245. (6-JSEE TB-2237 FOR ROUTING GUIDELINES & PTH REQ'S. (7] SEE DOC XXXX-XXXX-XXX FOR TOOLING KEEPOUT ZONES. (83) BACKPLANE DATUM REFERENCE. 9. DIMENSIONS APPLY FOR BOTH COMPLIANT PIN SIZES. OPTIONAL HOLE/MOUNTING SCREW LOCATION FOR GROUNDED PIN OR ADDITIONAL GUIDE PIN SUPPORT, REFER TO TB-XXXX FOR PROPER GUIDE PIN SELECTION AND DRAW ING C914-3010-000 FOR OPTIONAL HOLE DETAILS. ONLY APPLIES FOR MACHINED GUIDE PIN APPLICATIONS. LETTER PLATING B INi SULFAMATE, STANDARD GOLD, LEADED C INI SULFAMATE, HIGH GOLD, LEADED LETTER 0 ~|Ni SULFAMATE, STANDARD GOLD, LEADFREE E INi SULFAMATE, HIGH GOLD, LEADFREE LEFT N JIA Bi Cc, DE. FF. GIH F NANO Ni, STANDARD GOLO, LEADED SINAN E NO KEN G NANO Ni, HIGH GOLD, LEADED p Aan! BAan! 8B Aan] B-Aan! B- Aan! B- Aun! BA B wl ppAQH H NANO Ni, STANDARD GOLD, LEADFREE SEE STIEET 3) | Ng KEY (S) 4) CD) (S) 7) CS } |NANO Ni. HIGH GOLD, LEADFREE NY weiner iN E F | D E F)D E F;| D E F| OD E F; D E F,) D E F|D E F NUMBER PIN STYLE, HEIGHT 0 |GUIDE PIN MACHINED, 25.7mm / OPEN MODULE RIGHT Z Y P Q R S T U V | WwW 4 (GUIDE PIN ROLLED, 25.7mm vee a SEE SHEET U3 An) BAA! BAH) BAH] BSH] BSH) 8B 4 H|B WH NUMBER | SIGNAL & LG. GROUND WIPE LENGTH, COMPLIANT PIN SIZE NO BUIDEPIN (S) @ CD) (S) C7) @Ge 1 2mm WIPE SIGNAL, & mm WIPE LG GND, 0.0217 DRILL D\ F | Dg F | D\ @F | Dg F | DF | DY @F | DG D F | DF 2 3 mm WIPE SIGNAL, 4 mm WIPE LG GND, 0.0217 DRILL OPEN 3 2mm WIPE SIGNAL, & mm WIPE LG GND, G0.0177 DRILL (SEE SHEET 2) O (ZER ) \ 3mm WIPE SIGNAL, & mm WIPE LG GND, @0.0177 DRILL LEFT WALL L S 2mm WIPE SIGNAL, 3 mm WIPE LG GND, @0.0217 DRILL (SEE SHEET 2) 6 3mm WIPE SIGNAL, 3 mm WIPE LG GND, G0.0217 DRILL neh SHEET 63 M 7 2mm WIPE SIGNAL, 3 mm WIPE LG GND, 0.0177 DRILL wo WAL 9 3mm WIPE SIGNAL, 3 mm WIPE LG GND, @0.0177 DRILL (SEE SHEET 7) 1 SEE SHEET 5 ON Mad OS C7 \O SCALE 3/1 NS Uw CO (am) un Co Oo DESIGN 04/15/2010 TOLERANCES roo Amphenol TCS 0.0 0.25 [prawn 04/15/2010 A Division of Amphenol Corporation #2 0.00 10.13 HCL-MH 200 Innovative Way, Nashua, NH 03062 603.879.3000 CHK = =04/15/2010 TITLE 70 0.000 + - T.D0 BACKPLANE MODULE, VERTICAL MALE HEADER] x < > APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION ANGLES )+ 3 T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 N/A ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV C923-300C-500 A CUSTOMER USE Pro/E type: 923-300C-500 | 1.2 INTERPRET PER ASME Y14.5M DRAW ING Pro/E DRAWING: 923-300C-500 | A.O CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 1 OF 8 4, 3 2 18 7 k DRW NO. SH REV v 923-3000 -500 2 | A ZONE |REV SCR NUMBER DESCRIPTION DATE APPROVED SEE SHEET 1 DC <q (11,1) + ATUMS X_BP AND Y_BP Y_BP INTERSECT THE 7 SIGNAL A1 VIA ON BACKPLANE 5 Qe aL Ms (10.7) ~ rH X_DC jo 8 7 2 3] |s|/ |g} |x} |s 8.2) it Co m Ln oO r\ 0 |= ODULE OUTLINE 16.3 FULLY MATED -- (2.36) _z BP ! / l X_BP \ o\ | / ( A , Y | 0 ry ) C C 0.10 OPEN BACKPLANE MODULE DIMENSION vw A \ O O + = (/, 0 1.00 4.0) 1.40 oS 0 Fo % 1.64. FROM TOP OF DC 2.50 OO | QO O0 Oo Oo 2.40 C PCB TO OF X_BP ' ROW A ON BP 3.60 Oo 0:0 0 Oo OC 3.50 " | lL, .60 CONNEC TOR REFERENCE 5.00 +O O . 0 O 0 (15.1) SCALE 4/1 | 6.10 oOo O10 09 CO OC 6.00 O 7.20 oO OO: 0 0 OQ C 7.10 - CQ 8.20 8.60 ? O O O O 0 (| Ww 9.70 1) O/ O OO oO O 9.60 (6.4) FOR 4MM W IPE \ O O O 10.70 GROUNDS . (5.4) FOR 3MM WIPE GROUNDS 12.0 / (5.2) oom I 3MM WIPE SIGNAL [| ] l (4.2) y FH u B FOR 2MM W IPE 9 66 Ls) \ : SIGNAL 0.56 * Y_BplL< Y ppg SEE DETAIL & B nN CTE = SEE SHEET 8 Y_BP FOR PINOUT DETAILS SECTION Z-Z BP_HOLE PATTERN COMPONENT SIDE SCALE 10/1 2 a2 \O OPEN BACKPLANE FOOT PRIN I bu Ju CO Oo CY) Gh eo O DESIGN 04/15/2010 TOLERANCES roo Amphenol TCS 0.0 10.25 prawn 04/15/2010 A Division of Amphenol Corporation noe 0.00 10.3 HCL-MH 200 Innovative Way, Nashua, NH 03062 603.879.3000 CHK = 0415/2010 TITLE D 0.000 |+ - T.00 |BACKPLANE MODULE, VERTICAL MALE HEADER| > = 5 APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION ANGLES |= 3 T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 N/A ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV 923-3000 -500 A SCALE 4/1 CUSTOMER USE Prove type: 923-300C-500 | 1-2 INTERPRET PER ASME Y14.5M DRAW ING Pro/E DRAW ING: 923-300C-500 A.0 CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 2 OF 8 8 7 5 A A 3 2 18 7 l, 3 DRW NO. SH REV v 923-300C -500 3 | A ZONE JREV] SCR NUMBER DESCRIPTION BY DATE APPROVED DC |~4 SEE SHEET 1 + (11,1) + ATUMS X_BP AND Y_BP Y_BP INTERSECT THE SIGNAL A1 VIA ON BACKPLANE , _ | X_BP A a 0 B H rey i Z A__| | : O , CJ HL lal sOBY og) sR o lb (17.2) ~ oF || fl ie i) OR | 7 8 g 3s] |[s|} fs] fs] fs i A A H Fs = 0 O = oO ~ Ln ~~ ON Al RY OBL Old (28.2) = (0) Hl lal so lel otal lal fe ODULE OUTLINE A le sole ORT OIL O | Be ee 16.3 FFRCAREEE FULLY MATED 7 (2.36) : > X_BP ~ ! A mw CO QO 0.10 FT POLARIZING/GU| = h 2 5 O O |__] 1.00 BACKPLANE MODULE DIMENSION TAO O | O O O O - = (4.0) 2.50 | |) O| QO OO oO OC 2.40 : : C 1.64 * 3.60 i C C CO 3.50 FROM TOP oF OG O | O O PCB TO OF X_BP | 4.60 (D368) row AON BE 5.00 o Fo FS oo Y (15.4) 17, MAX _ + , : 6.10 | mM O | O OO CO Oo 6.00 O NNEC TOR _REFEREN ia \ : | SCALE 4/1 7.20 7 | Oo OO: Oo O Oo C 7.10 (7.29) : \ / ; O O O 8.20 8.60 =O) - OO O 9.70 Do OG COC 0 COC O 9.60 Po C) QO QO 10.70 25, \ 7 a ww (0) (6.4) 7 J FOR 4MM WIPE = GROUNDS | V ) \ (5.4) / I I FOR 3MM W IPE on (2-0 ( N a GROUNDS / . B fH O Ls: ge bua hes i Y_BP Ld 4.5 FOR PINOUT DETAILS vat wipe ei MASS ooo = | | ooo mo | (4.2) | L rr a a | L_ |__| | a a a | | FOR 2MM W IPE Le Las) ST BP_HOLE PATTERN SIGNAL TAIL MPONENT_ SI LENGTH Y6P | SCALE 10/1 + 7.06 2.36 Y_BP |-~< X_BP : SECTION Z-Z : re PIN At o FT POLARIZING/GU| OPTIONAL KEY S SEE SHEET 1 S SART NUMBER. TREE RBACKPLANF FOOTPRINT 2 | S DESIGN 04/15/2010 TOLERANCES roo Amphenol TCS 0.0 10.25 prawn 04/15/2010 A Division of Amphenol Corporation oo? 0.00 10.3 HCL-MH 200 Innovative Way, Nashua, NH 03062 603.879.3000 CHK = 0415/2010 TITLE D 0.000 + - T.DO /BACKPLANE MODULE, VERTICAL MALE HEADER] x = ANGLES TE > APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 N/A ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV 923-3000 -500 A CUSTOMER USE Prove type: 923-300C-500 | 1-2 SCALE L/ INTERPRET PER ASME Y14.5M DRAW ING Pro/E DRAW ING: 923-300C-500 A.0 CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 3 OF 8 8 7 5 A 4 3 2 18 7 6 3 DRW NO. SH REV v 923-3000 -500 , a1 ZONE [REV] SCR NUMBER DESCRIPTION BY DATE APPROVED SEE SHEET 1 = (11.1) + ATUMS X_BP AND Y_BP INTERSECT THE Y_BP [<q SIGNAL A1 VIA ON BACKPLANE (\Y 0 , - (16.7) f p on oo S&S X_DC 2 . 3 S g S S I oO oe mn Wn DB (8) (28.2) c ODULE OUTLINE --> (2.36) _;, 16.3 FULLY MATED : X_BP : oN . ~\ BP 9 A Poy 5\ Oo O O O 0.10 | O O O 1.00 RIGHT POLARIZING/GUIDE < A 1.40 @ . Oo O | BACKPLANE MODULE DIMENSTON 2.50 1) O O O O O 2.40 (4.0) | 3.60 D O:'o OO oO OC 3.50 1.64 : O O O i 60 FROM TOP OF DC i, PCB TO OF >x_Bp 2-00 _O O (15.1) ROW A ON BP \ - 16.9 MAX + 6.10 mY O};Oo O CO COC a 6.00 a (D3.68) CONNECTOR REFERENCE 7.20 Oo O'o O oO OC 7.10 8.20 8.60 : O O NE \ 9.70 x O/ Oo OO oO O \ 9.60 a C) C) C 10.70 q L/ 25.7 \ Z| Z \ [7 (6.4) 4 A, / T y (0) FOR 4MM W IPE GROUNDS ry A Af (5.4) FOR 3MM WIPE \ = I I a = (4.60) * GROUNDS | 12.0 - 3 10.7 SEF DETAIL A&B SEE SHEET 8 i 6.5 ( FOR PINOUT DETAILS R 45 5.2) emo OOo ap ee 1 | nooo SHM WIPE SIGNAL | \ y+-t | 7. at > HOLE PATT | COMPONENT SIDE rR 2 iB Ts Tz hs Per SI LENGTH = Y_BP Z X_BP |~< : 3 \O SECTION Z-Z A 0) S I we) OPTIONAL KEY [OAT POLARIZING/OU. S SEE SHEET 1 XQ BACKPLANE FOOTPRINT a PART NUMBER TREE Gh . eo O 7 DESIGN 04/15/2010 SIN at TOLERANCES *o.| Amphenol TCS 0.0 0.25 | prawn 04/15/2010 A Division of Amphenol Corporation no? 0.00 10.3 HCL-MH 200 Innovative Way, Nashua, NH 03062 603.879.3000 CHK 04/15/2010 TITLE = 0.000 + - T.D0 |BACKPLANE MODULE, VERTICAL MALE HEADER] x = 5 APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION ANGLES | + 3 T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 N/A ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV ( 923-300C -500 A CUSTOMER USE Prove type: 923-300C-500 | 1-2 SC ALE 4/1 INTERPRET PER ASME Y14.5M DRAW ING Pra/E DRAW ING: 923-300C-500 A.0 CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 4 OF 8 5 1 6 ; A : ) 18 6 DRW NO. SH REV v 923-300C -500 A ZONE JREV] SCR NUMBER DESCRIPTION BY DATE APPROVED SEE SHEET 1 DC K< + (41,1) + ATUMS X_BP AND Y_BP 1 Y ppl INTERSECT THE 0 - SIGNAL A1 VIA ON BACKPLANE X_BP Be K (11.8) 7 fh YF ; r QW X_DC oN oO oO oO oO f | id oO ae SO ~t NN oO [__ _ = O O 1 w mm Wn c~ ion (28.2) - YI ol= ODULE OUTLINE 16.3 FULLY MATED (2.36) X_BP - Jo mY c ra i A 0 O | O O CQ 0.10 Vv wei | i] O\/ O O 1.00 LEFT WALL BACKPLANE MODULE DIMENSION J 14.0) 1.40 1) O O 1.64 2.50 PD OO, O AO CO O 2.40 C FROM TOP oF OC Bp | | PCB TO OF - _ 3.50 ROW A ON BP 3.60 / Oo O.0 0 Oo OC O O O 1.60 5.00 ) | O O 15.1) NNEC T F N 4 ; SCALE 4/1 6.10 | OM oOo | QO OO oO O 6.00 7.20 OM O.oOQo O Oo OC 7.10 \4 oO] O O 8.20 8.60 ) O O <q 9.70 tO O oO O O O 9.60 -11.9 Max \ , O OQ 10.70 7 W (6.4) FOR &4MM WIPE + = GROUNDS (5.4) FOR 3MM WIPE 12.0 GROUNDS | <a ie <Q ic <q) i> / \ B \ ppl SEE DETAIL A&B _ SEE SHEET 8 _ Soo oer ee ore (5.2) | i Pit it | [ 1 | (itt | [| ) FOR PINOUT DETAILS 3MM WIPE SIGNAL py+ |_| 17+4 (4.2) FOR 2MM W IPE Lg go 7 Oo) e SIGNAL LENGTH bY BP SONDOKEN Ste >lY_Bp X_BplL< SCALE 10/1 SECTION Z-Z a ee 2 a2 Ne) LEFEL WALL BACKPLANE FOOTPRINI NS uu CY) GA >) DESIGN 04/15/2010 TOLERANCES roo Amphenol TCS 0.0 10.25 prawn 04/15/2010 A Division of Amphenol Corporation unt Pp yA 0.00. |40.13 HCL-MH | 200 innovative Way, Nashua, NH 03062 603.879.3000 CHK = 0415/2010 TITLE D 0.000 + - T.DO /BACKPLANE MODULE, VERTICAL MALE HEADER] x = 5 APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION ANGLES )+ 3 T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 N/A ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV 923-300C -500 A CUSTOMER USE mo/E tyne: 923-300C- 1.2 SCALE 4/1 INTERPRET PER ASME Y14.5M DRAW ING Prose DRAWING 993-000-200 A.0 CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 5 OF 8 5 6 , A ) 18 7 6 3 DRW NO. SH REV 923-300C -500 6 1A ZONE JREV] SCR NUMBER DESCRIPTION DATE APPROVED SEE SHEET 1 pc ke + (1.1) + Tt; ...,f ATUMS X_BP AND Y_BP INTERSECT THE (j SJ 0 a. SIGNAL A1 VIA ON BACKPLANE Q, @ X_BP i - (11.7) Z A FH X_DC an | so (|s} } |2} 8} (28.2) = ODULE OUTLINE 16.3 _ FULLY MATEO -- (2.36) T BP Vy C i A X_BP fe : a | | A Nk | C) C 0.10 0 WY O Me (1, .0) -_ RIGHT WALL BACKPLANE MODULE DIMENSION ; O O 1.00 1.64 + 1.40 fp O ( FROM TOP OF DC PCB TO OF X_BP 2.50 f O| O O Co O 2.40 ROW A ON BP : : 3.60 mo O, 0 0 O OC 3.50 CONNECTOR REFERENCE " | 1,60 SCALE. 4/4 5.00 rf O O O O (15.1) 6.10 O}| CO O CO O 6.00] |O 7.20 ID o, 0 OC oOo oO 7.10 11.8 MAX : O O O 8.20 \ 8.60 ? ' Oo O a WwW 9.70 )) O Oo AO oOo O 9.60 (6.4) 4 \ O OC 10.70 FOR 4MM W IPE : GROUNDS (5.4) FOR 3MM WIPE 12.0 . . i GROUNDS | / 7 ry Lit it CAA A Litt | (5.2) [ | | 3MM_ W IPE arias f u u v u t u u t u \. SEE DETAIL A&B FOR 2MM W IPE 0.56 736 ~ (1.5) Y_BP | SEE SHEET 8 SIGNAL TAIL = FOR PINOUT DETAILS b>y_Bp LENGTH Y_BP X_BP |} SECTION Z-Z 161 P fi cary RN SCALE 10/1 2 a2 SS RIGHT WALL BACKPLANE FOOTPRINT va 3s CY) GA >) DESIGN 04/15/2010 TOLERANCES roo Amphenol TCS 0.0 10.25 prawn 04/15/2010 A Division of Amphenol Corporation ns 0.00 10.43 HCL-MH 200 Innovative Way, Nashua, NH 03062 603.879.3000 CHK = 04715/2010 TITLE = 0.000 |+ - T.DO |BACKPLANE MODULE, VERTICAL MALE HEADER| > = ANGLES | > APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 N/A ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV 923-300C -500 A CUSTOMER USE Prove type: 923-300C-500 | 1-2 SCALE 1/1 INTERPRET PER ASME Y14.5M DRAW ING Pro/E DRAW ING: 923-300C-500 A.0 CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 6 OF 8 8 7 6 5 3 y 48 7 5 3 DRW NO. SH REV 923-3000 -500 7 A ZONE |REV| SCR NUMBER DESCRIPTION BY DATE APPROVED DC +-~< SEE SHEET 1 (11.1) + ATUMS X_BP AND Y_BP SI ype Le INTERSECT THE @ = SIGNAL A1 VIA ON BACKPLANE ~~ (12.8) X_BP E X_DC a 7 I rH, 2 3 3 g g 8 - O {| ; -- (28.2) = ODULE OUTLINE 16.3 FULLY MATED 1 36) . : 3p aa o~ | ; A 0 oOo O 0 OO 0O OC 0.10 Vv wuev tS / O O O 1.00 = (4.0) 1.40 ) _ O O C TWO WALL BACKPLANE MODULE DIMENSION -20M TOP ne oe 2.50 [) O | OC O OC O Z.40 PCB TO OF X_BP . ROW A ON BP 3.60 ! QO O ! Oo O oO OC 3.50 O O O 1.60 : - 5.00 OD) O 15.1) SCALE 4/1 510 | OM Oo | O 0 CO OC 6.00 @ 7.20 QM OO: oO OO OQ OC 7.10 | O | O O 8.20 8.60 . O O ?q = 12.9 MAX > 9.70 LD O/ QO oO oO OC 9.60 } O CO 10.70 X W f~ (6.4) FOR 4MM WIPE 4 - L GROUNDS (5.4) FOR 3MM WIPE 12.0 GROUNDS ( 1 1 | B N (5.2) J i [ [| [ ( | [ [| [| [| \ Y_BP <q SEE DETAIL A&B 3MM_W IPE ares | \ i_ T_T 44 __] \ a a | SEE SHEET 8 FOR OMM WIPE i hus FOR PINOUT DETAILS SIGNAL 2.36 TAIL >lY_ap LENGTH p18? X_BP lle neh SCALE 10/1 SECTION 2-2 15.1 S 2 a2 \O Ro ra we) IWO WALL BACKPLANE FOOTPRINT S s, >) DESIGN 04/15/2010 TOLERANCES oo| Amphenol TCS PIN A1 0.0 0.25 | prawn 04/15/2010 A Division of Amphenol Corporation _37 0.00 10.13 HCL-MH 200 Innovative Way, Nashua, NH 03062 603.879.3000 CHK 04/15/2010 TITLE = 0.000 |+ - T.DO BACKPLANE MODULE, VERTICAL MALE HEADER| > = 5 APVD 04/15/2010 XCede HD, 3 PAIR, 6 POSITION ANGLES |+ 3 T.DO | part no. REV UNLESS OTHERWISE SPECIFIED DIMENSIONS SEE PN TREE SHEET 1 NZA ARE IN MM, DECIMAL MARKER IS A PERIOD DRAW ING NO. REV 923-3000 -500 A SCALE 4/1 CUSTOMER USE Prove type: (923-300-500 | 1-2 INTERPRET PER ASME Y14.5M D RAW ING Pro/E DRAW ING: C923-300C-500 | A.O CODE IDENT 31413 SIZE D SCALE 1/1 SHEET 7 OF 8 8 7 5 A 3 2 1