Keithley 706 Instruction Manual page 35

activating front panel Program 99 or by using the following
procedure:
1. Press PRGM, 6.
2. Press 2, ENTER.
In the l-pole mode the display is slightly different as shown in
the following display.
r-nlnrq ~~-
1
2
I.
3
-ROWS
4
The additional display digit is due to the fact that up to 200
'
channels may be realized in the l-pole mode. This only works
123451
with the Model 7056 general purpose scanner card.
Matrix Mode-Using
the Model 7052 matrix scanner card
with the Model 706 requires that the matrix mode be ac-
-lj
COLUMNS
tivated.The matrix mode precludes the use of the continuous
or single scan modes. The matrix mode can only be used in
&-&
A TYPICAL CROSSPOINT ON THE
MODEL 7052 MATRIX CARD
& k
,5&,
MI6
CONSISTS OF A 3-POLE
t FORM A RELAY AS SHOWN.
L---J
the step scan mode. To activate the matrix mode use the
following procedure:
1. Press PRGM, 6. Selects program mode and Program 6.
2. Press 0, ENTER. Selects matrix mode.
Figure 2-5. Model 7052 Matrix Scheme
3 Denotes row #3.
c Denotes the crosspoint is closed.
After the ENTER button in step 2 is pressed, the Model
706 is placed in the matrix mode and the following is
displayed:
I uu I Id
I
where the format is as follows:
nnn m 0 or C
where:
o or c = The crosspoint is either opened or closed.
nnn = Three digit number displaying the column. Where
there can be a total of five columns per card, 10 cards per
706, five daisy chained 706's maximum. This can be a
maximum of 250 columns.
m = The row from 1 to 4.
The matrix mode displays crosspoints instead of channels.
Crosspoints consists of the junction of one row with one col-
umn. On each Model 7052 matrix card there are five columns
and four rows. Refer to Figure 2-5.
Example l-For
an example of a matrix crosspoint display
consider the following:
UUY 34
where:
004 Denotes the #l (001 through 050 denotes unit #lI.
004 Also, denotes card #l of unit #l (001 through 005
denotes card #l of unit #l).
004 Also, denotes column #4 of card #l of unit #l (001
through 005 denotes the columns of card #l of unit HI.
Therefore,the display 004 3 c means that the crosspoint of
unit #l, card #l, column #4, row #3 is closed.
Example
2-For another example, consider a 4 x 50 matrix
which would be 10 Model 7052 matrix cards with jumpers in-
stalled between the rows of each card.- A matrix display could
be as follows:
I CJW Ycl
where:
048 Denotes unit #l (001 through 050 denotes unit #l).
048 Also, denotes card #lO of unit #l (046 through 050
denotes card #lO of unit #l).
c Denotes the crosspoint is closed.
048 Also, denotes column #3 of card #lo of unit #l (046
through 050 denotes columns of card #lo of unit #l).
4 Denotes row #4.
Therefore, the display 048 4c in a matrix means that the
crosspoint of unit #l, card #lo, column #3, row #4 is closed.
Example
~--AS another example, consider a 40 x 5 matrix
which would be 10 Model 7052 matrix cards with jumpers in-
stalled between the columns of each card. A matrix display
could be as follows:
I UY3 rlo!
where:
043 Denotes unit #l (001 through 050 denotes unit #ll.
043 Also, denotes card #9 of unit #l (041 through 045
denotes card #9 of unit #l).
043 Also, denotes column #3 of card #9 of unit #l (041
through 045 denotes columns of card #9 of unit #l).
2 Denotes row #2.
o Denotes crosspoint is open. \
2-23