Header Strip Transition Board

Header Strip Transition Board (Part #
ETB-HS)
The Header Strip transition board provides a quick and easy way to transition
the wiring from your tester to modular fixturing (adapter cables).
wiring from tester
adapter cables
You should have received:
One Header Strip
“A” board
One Header Strip
“B” board
Note: The different
connector positions on
the “A” and “B” boards
allow the boards to be
mounted side-by-side.
End Mounting
Strips
Four board
spacers
Eight #4 x 1/2” phillips
screws
Understanding the Header Strip Transition Board
Each pin is connected to a pin on the other rows.
For example,
pin 1 here,
is connected to
pin 1 here,
and pin 1 here.
This allows unused pin positions on one row to
be used on the other row, minimizing “wasted”
test points.
For example:
The unused
positions here,
are used here.
Header Strip Mating Connectors
The header strip is designed to be used with the TE Connectivity MOD IV Double
Row connector, which may be purchased in many sizes. See TE Connectivity part
numbers below. Connectors may also be cut to length. See TE Connectivity
product drawing 87456 (available at www,te.com) for all available sizes.
Part numbers of MOD IV Double Row connectors commonly in distribution
# of
TE
positions part number
8
87456-3
10
87456-5
12
87456-7
14
87456-9
16
1-87456-1
# of
TE
positions part number
18
1-87456-3
20
1-87456-5
24
1-87456-9
26
2-87456-1
30
2-87456-5
Cirris connector clip sets (Cirris P/N: EHS-CL)
can be used with mating connectors.
# of
TE
positions part number
34
2-87456-9
40
3-87456-5
50
3-87456-9
54
4-87456-5
60
5-87456-2
Connectors always count alternating as shown.
2, 4, 6 ...
Latch/eject clip
Provides connector
alignment, strain
relief, positive lock,
and eject release.
Start and stop clips
Show first and last
wire positions
1, 3, 5 ...
For Header Strip Connectors over 70 positions
Header Strip
Tie Clips
Maximum TE connector length is 70 positions. To accommodate larger mating connectors use Header Strip tie clips
(Cirris p/n: HSTC-10). Header Strip Tie Clips allow you to
tie two connectors together and plug them into the Header
Strip ensuring that the connectors are not spaced apart,
overlapped, or swapped.
Mounting the Header Strip
Where to mount Header Strip
Boards may be mounted together as a continuous strip, or distributed around the perimeter
of the test area.
Boards may be mounted directly to the work
surface, or mounted on a separate angled
surface.
On an angled surface
On the work
surface
front
Consider mounting transition boards behind or
to the side of the work area to avoid damage
from dropped objects or inadvertent bumping.
To mount the Header Strip
1. Place spacers under the transition board.
Pins protruding on the bottom of the board
fit into the recessed holes in the spacer.
2. Place the complementary A or B board and a
spacer. Install the #4 x 1/2” phillips screws
between boards.
spacer
spacer
3. Install screws on the outer edges of
the boards with the side mounting
strips.
side mounting strip
CR to Header Strip Wiring
Note: The pin count for connectors on
the CR tester is shown at right.
1
63
64
You can use a simple one-to-one ribbon cable to
connect from each CR connector to each Header
Strip Transition board.
Keeping cabling as short as possible will minimize
fixture resistance. This is especially important with
small gauge wire like that used in ribbon cabling.
2
2 4…
1 3…
… 62 64
… 61 63
When running cables to the Header Strip boards that are next to each other
Make sure cabling uses continuous test points. This is a must for smart adapters to work correctly.
to test points
1-64
CORRECT
to test points
65-128
to test points
129 –192
to test points
65-128
NOT CORRECT
to test points to test points
1-64
129 –192
Test points are not continuous
Four-wire Kelvin measurements with the CR
In the event you need to make 4-wire Kelvin measurements with the CR tester, you must create your
wiring to the header strip differently. For more information see “Using the Header Strip with 4-wire
Kelvin Test Points” available at the URL www.cirris.com/headerstrip/4wire.
CH2 to Header Strip Wiring
Two adjacent CH2
1
Eurodin connectors
must be wired to one
3
header strip
connector as shown.
29
31
2 4…
30 32 2 4 …
1 3…
29 31
30 32
2
4
30
29 31
13…
32
Example of a CH2-to-Header-Strip Cable for High Voltage
Cables such as this, or its subassemblies, can be purchased from Cirris, or you can assemble it yourself. The header strip will generally support test voltages up to 1500 VDC when used with the high
voltage wire and poke-and-crimp connector defined below.
High Voltage Wire with protective
braid or sheath
Wire has heavy-wall Teflon (PTFE)
insulation with a MIL-W-16878/5
(Type EE) rating. Using 22 gauge
wire reduces fixture resistance.
Dual Row .1” Keyed 64 Position
Use this connector (TE Connectivity P/N 1-102387-2)
to connect to the blue connector on the Header Strip.
DO NOT attempt to use this connector for SmartAdapter connectors. Cirris clips will not attach to
these connectors.
CH2 Eurodin clip
Holds eurodin connectors
(with the Pancon backshell) so they can be
plugged on together. The
order of the connectors is
always preserved.
Two Eurodin Connectors 32 Position
TE Connectivity P/N: 166467-1
Pancon Backshell P/N: 100-000-064
When using ribbon cabling from the CH2 to the Header Strip
Generally, ribbon cabling supports test voltages up to 1000 DC volts. The specific breakdown depends on the ribbon cable, the IDC connector, and environmental conditions. Consider keeping ribbon cable lengths as short as possible to minimize resistance.
CH2-CR Converter (Cirris P/N: ACH2-CR)
Adapts from two CH2 connectors to one .1” dual row
header 64 position connector like that on the CR tester.
A one-to-one 64 position cable can then connect from
this converter to the Header Strip board.
Making Kelvin 4-wire Adapters for the Header Strip
Adapters with 4-wire test points can be used on either the CR or CH2 testers. If you want to use
the adapters to make 4-wire measurements with the CR tester, the wiring from the CR tester to the
Header Strip must be different. For more information see “Using the Header Strip with 4-wire Test
Points” available at the URL www.cirris.com/headerstrip/4wire.
Two pins are required for each 4-wire Kelvin test point. Alternating pin
pairs on the Header Strip mate, such as those circled at right, can be
used for 4-wire test points.
Wire Harness Assembly and Test Made Easy
Copyright © 2014 Cirris Systems Corporation, Salt Lake City, Utah 84119
Header Strip Transition Board.pub
8/21/2014