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Card Connections & Installation
Typical connection techniques
All external circuitry, such as instrumentation and
DUTs, that you wish to connect to the matrix card must
be terminated with a single 96-pin female DIN connec-
tor. The following connection techniques provide some
guidelines and suggestions for wiring your circuitry.
WARNING
Before beginning any wiring proce-
dures, make sure all power is off and
any stored energy in external circuit-
ry is discharged.
NOTE
It is recommended that external cir-
cuitry be connected (plugged in) after
the Model 7012 assembly is installed
in the Model 7001 mainframe and
with the 7001 power off. Installation is
covered in paragraph 3.5.
Output relays The multi-pin connector card uses a
relay for each of the four output banks. These output
relays are normally open to prevent any hazardous
voltages (via the mainframe backplane) from appear-
ing on the pins of the male DIN connector. The output
relays will only close when the Model 7011-MTC-2 ca-
ble assembly is connected to card. If building you own
cable assembly, you must make sure that it shorts pins
1a to 1b of the card connector (Figure 3-8) when it is
mated to the card. Shorting pins 1a to 1b allows the
output relays to close.
3-6
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Round cable assemblies Figure 3-6 shows typical
round cable connection techniques using accessories
available from Keithley.
In Figure 3-6A, connections are accomplished using a
Model 7011-MTC-2 cable and a Model 7011-MTR bulk-
head connector. The two-meter round cable is termi-
nated with a 96-pin female DIN connector at each end.
This cable mates directly to the multi-pin connector
card and to the bulkhead connector. The bulkhead con-
nector has solder cups to allow direct connection to in-
strumentation and DUT. Figure 3-7 provides pinout for
the bulkhead connector. The view shown is from the
solder cup end of the connector.
In Figure 3-6B, connections are accomplished using a
Model 7011-MTC-2 cable assembly that is cut in half.
The 96-pin female DIN connector on one end of the ca-
ble mates directly to the multi-pin connector card. The
unterminated end of the cable is wired directly to in-
strumentation and DUT. The other half of the cable as-
sembly could be used for a second switching card.
In Figure 3-6C, connections are accomplished using a
custom-built cable assembly that consists of a Model
7011-KIT-R connector and a suitable round cable. Hita-
chi cable p/n N2807-P/D-50TAB is a 50-conductor
round cable. Two of these cables can be used to provide
100 conductors. The connector has solder cups to ac-
commodate the individual wires of the unterminated
cable. Figure 3-8 provides an exploded view of the con-
nector assembly and shows how the cable is connected.
The connector end of the resultant cable assembly
mates directly to the multi-pin connector card. The un-
terminated end of the cable assembly is wired directly
to instrumentation and DUT.
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