Tel. 775.331.8283



Fax 775.331.8004

www.gavazzi-computing.com
Specifications subject to change without notice
© Copyright 2004 Carlo Gavazzi Computing Solutions Inc. Printed in USA
ELECTRONIC PACKAGING DIVISION
VME64 J1/J2 Backplane L Series
Carlo Gavazzis family of enhanced 6 layer monolithic VME
J1/J2 backplanes uses a patented trace routing and layer con-
struction which optimizes the important electrical characteristics
such as low crosstalk, controlled impedance, and low propa-
gation delay. Carlo Gavazzis L Series features the popular
inboard termination scheme (inside the first and last connectors)
resulting in the lowest possible physical profile available in slot
counts of 2-21 slots for 16, 24, 32, and 64 bit applications. In
addition, by simple choice of letter option in the part number,
the user can select the addition of shrouds and latching header
on key system control pins, or select the version offering auto-
matic IACK and BG jumpering of unpopulated slots, or with bus
bars. The enhanced L Series fully supports the requirements of
the 96 pin option of ANSI Standard and ANSI/VITA-1 1994
VME64. The L Series signal line and power distribution design
will support high frequency 64 bit parallel data transfers using
address and data lines.
The careful control of dielectric spacing provides maximum
desired distributed capacitance between power and ground.
The multiple ground planes improve power distribution and
minimize the potential for ground shift. The power block distri-
bution pattern and unbroken power planes with redundant vias
further enhance the backplanes ability to respond to the rapidly
fluctuating power demands of todays high performance board
sets.
Construction
Material: FR4 (UL 94-V0 rated)
Per IPC 600/610
Power connection to backplane via 10 pin power blocks
using #6-32 hardware (provided) Mupacs continued lead-
ership in producing the highest performance, cost-effective
VME64 backplanes is again demonstrated by the enhanced
performance and features designed into the L Series.
Features
Optimized performance for cost-effective 6 layer design
Carlo Gavazzis proprietary patented trace routing for normal-
ized decoupling of adjacent signal and control lines reduces
crosstalk while maintaining the controlled transmission line
impedance and short propagation delay required VME64
100% Level 3 electrical testing
Common power planes for +5V and GND across J1 and J2
eliminate ground loops
Matched impedance of J1 and J2
100% press-fit construction for reliability
All signal pins accessible from both sides of backplane
Bus bar kits available

Performance
Recorded waveforms 20 slots (LF20)
Measured on HP54120A Time Domain Reflectometer with input
pulse = 600 ps rise time LF20 was loaded with connectors plus
termination

Decoupling capacitors adjacent to each resistor network to
further isolate +5 and GND planes
Additional bulk capacitors to enhance di/dt response
Provisions for optional 10 pin latching header to connect to
AC fail, +5V, system reset, system fail, and ground signals
allow for latching IDC cabling
End stackability for close coupling of redundant systems or
rapid expansion of installed systems
Bus bar kits available
Efficient geometry of power block loading pattern for reduc-
tion of transplane ground shift
Standard options specify shrouds installed plus latching 10
pin header, automatic bus grant jumper feature, or installed bus
bars
64 bit high speed parallel data transfers using address and
data lines
Fully complies with enhanced requirements of ANSI Standard
ANSI/VITA-1 1994 VME64
Power
Conservative design rules based on DIN 41612 Class Z connector
derating curves define recommended limit per slot for installed 6U
VME64 system boards.
Max. Current per Slot (based on DIN connector spec.)
Backplane
VME64 J1/J2 Monolithic - L Series
+5V
+12V
-12V
+5VB
GND
+25C
9A
1.5A
1.5A
1.5A
18A
+60C
6A
1A
1A
1A
12A ELECTRONIC PACKAGING DIVISION
innovative engineering, dependable products
Carlo Gavazzi Computing Solutions designs and manufactures
standard and custom AdvancedTCA, CompactPCI®, PCI/ISA,
and Switch Fabric backplanes, cabinets, enclosures, I/O boards,
and integrated systems that address your outsourcing and time-
to-market needs.



East: 10 Mupac Drive, Brockton, MA 02301


Tel. 508.588.6110

Fax 508.588.0498

www.gavazzi-computing.com
West: 740 E. Glendale Ave., Sparks, NV 89431



Tel. 775.331.8283



Fax 775.331.8004

www.gavazzi-computing.com
Specifications subject to change without notice
© Copyright 2004 Carlo Gavazzi Computing Solutions Inc. Printed in USA
ELECTRONIC PACKAGING DIVISION
Backplane
lseries RevDD 10/04
VME64 J1/J2 Monolithic - L Series
Bus Bar Kit**
3425003-01
3425004-01
3425005-01
3425006-01
3425007-01
3425008-01
3425009-01
3425010-01
3425012-01
3425013-01
3425014-01
3425016-01
3425019-01
3425020-01
3425021-01
*25 Amp Max Input per Power Block (Fully Derated @ 60C)
**See Accessories Section for Bus Bar Drawings
Power Block Locations*
Ordering Information L Series VME64 J1/J2
Model Number Selection:
L
Option Code
Slot Count
Ordering Examples:
LF12 = 12 slot VME64 J1/J2 96 pin DIN base line standard w/o cost
adder options
LN20 = 20 slot VME64 J1/J2 96 pin with shrouds and 10 pin header and bus
bars included
Additional Features
1. Shrouds on rear of all J2 and first
and last J1 connectors, plus 10 pin
latching header (AMP746140 or
equiv.) on ACFAIL, SYSFAIL,
SYSRESET, GND
2. Automatic jumpering for IACK and
BG pins for unpopulated slots
3. Bus bars included
Option Code
F G K L N R Model
No.
LX03
LX04
LX05
LX06
LX07
LX08
LX09
LX10
LX12
LX13
LX14
LX16
LX19
LX20
LX21
Slot
Count
3
4
5
6
7
8
9
10
12
13
14
16
19
20
21
Dim
A
2.34
(59,44)
3.14
(79,76)
3.94
(100,15)
4.74
(100,42)
5.54
(140,72)
6.34
(161,04)
7.14
(181,43)
7.94
(201,68)
9.54
(242,39)
10.34
(262,68)
11.14
(282,96)
12.74
(323,67)
15.14
(384,63)
15.94
(404,95)
16.74
(425,27)
+5
C1, D2
B1, C3
B1, B4
B1, B2, B5
B1, B5, B6
B1, B2, B7
B1, B2, B7, B8
B1, B2, B3, B8, B9
B1, B3, B4, B5, B8, B9
B1, B3, B4, B5, B9,
B10, B11
B1, B3, B4, B5, B8,
B9, B10
B1, B3, B4, B5, B6,
B10, B11, B12, B13
B1, B3, B4, B5, B6,
B12, B13, B14, B15,
B16
B1, B3, B4, B5, B6, B7,
B13, B14, B15, B16,
B17
B1, B3, B4, B5, B6,
B7, B8, B14, B15, B16,
B17, B18
+12
B1
B2
B2
B3
B3
B4
B4
B5
B6
B6
B7
B8
B8, B9
B9, B10
B10, B11
-12
C2
C2
C2
C3
C3
C4
C4
C5
C6
C6
C7
C8
C8, C9
C9, C10
C10, C11
+5B
B2
B3
B3
B4
B4
B5
B5
B6
B7
B7
B8
B9
B10
B11, B19
B12, B20
GND
A1, A2, D1
A1, C1, D1-D3
C1, C3, C4
C1, C2, C4, C5
C1, C2, C4, C5, C6
C1, C2, C3, C5, C6, C7
C1, C2, C3, C5, C6, C7,
C8
C1, C2, C3, C4, C6, C7,
C8, C9
C2, C3, C4, C5, C7, C8,
C9, C10
C2, C3, C4, C5, C7, C8,
C9, C10, C11
C2, C3, C4, C5, C9,
C10, C11, C12
C3, C4, C5, C6, C10,
C11, C12, C13, C14
C2, C3, C4, C5, C6,
C11, C12, C13, C14,
C15, C16, C17
C3, C4, C5, C6, C7,
C12, C13, C14, C15,
C16, C17, C18
C3, C4, C5, C6, C7, C8,
C13, C14, C15, C16,
C17, C18