Backplane Jumpers; Screw Terminal Connector Card - Keithley 7014 Manual

D
-Jumper
Figure 3-4
Bank-to-bank jumper installation
3.3.2 Backplane jumpers
The Model 7001 mainframe has an analog backplane
that allows the banks of a Model 7014 multiplexer card
to be internally connected to a compatible switching
card installed in the other slot (see paragraph 2.5.1 for
details).
The backplane jumpers for the multiplexer card asset-
bly are located on the relay card as shown in Figure 3.
5. Tbe card is shipped from the factory with the jump-
ers installed.
Jumper removal
Perform the following steps to remove backplane
jumpers:
If mated together, separate the relay card from the
connector card by removing the mounting screw
and pulling the two cards away from each other
(see Figure 3-4). Remember to only handle the
cards by the edges and shields to avoid contamina-
tion.
Use Figure 3-5 to locate the jumper(s) that are to be
removed.
It is not necessary to physically remove the jump-
ers from the PC board. Using a pair of wire cutters,
cut one lead of each jumper.
Jumper installation
Referring to Figure 3-5 for jumper locations, perform
the following steps to install backplane row jumpers:
1. If mated together, separate the relay card from the
connector card by removing the mounting screw
and pulling the two cards away from each other
(see Figure 3-4). Remember to only handle the
cards by the edges and shields to avoid contamina-
tion.
2. Physically remove a cut jumper by unsoldering it
from the PC board.
3. Install a new #22 AWG jumper wire (Keithley P/N
J-15) and solder it to the PC board.
4. Remove the solder flux from the PC board The
cleaning procedure is explained in paragraph 5.2.
7014
Relay Card
I
Figure 3-5
Backplane jumpers
3.3.3 Screw terminal connector card
The screw terminal connector card is shown in Figure
3-6. Connections are made directly to the screw termi-
nals of the eight terminal blocks. Each screw terminal
will accommodate #16-22 AWG wire.
3-4