Keithley 7001, Instruction Manual, Page: 29 / 353

Getting Started
3-4
3.2.3 Channel status display
The channel status display provides real-time status of
each available channel for the two slots. Only the avail-
able channels are displayed. There are two channel sta-
tus display modes; the Channel List entry mode
(SELECT CHANNELS) and the Scan List entry mode
(SCAN CHANNELS). On power-up, the Channel List
entry mode is selected. The SCAN LIST key toggles be-
tween the Channel List and the Scan List. The instru-
ment can be returned to the channel status display by
pressing the EXIT key one or more times.
The channel status display is shown in Figure 3-3. This
display is structured as two 10-column grids. The left
grid provides the channel status of the card installed in
slot 1 (CARD 1) and the right grid provides the channel
status of the card installed in slot 2 (CARD 2). As
shown in the illustration, an open channel is represent-
ed as a “dot” while a closed channel is represented as a
“dash”.
Channel assignments

The channel assignment for-
mat is automatically determined by the card type.
There is a three-integer format to express matrix card
channels, and a two-integer format to express channels
for all other types of switching cards. The individual
integers that make up the channel assignment are sep-
arated by an exclamation point (!).
Matrix cards: Matrix cards use the three-integer
format to express channel assignments. The first
integer designates the slot number that the card
is installed in. Thus, a “1” designates slot 1
(CARD 1), and a “2” designates slot 2 (CARD 2).
The second integer designates the row number of
the matrix card. There are four rows; the top row
is Row 1, the second row from the top is Row 2,
the next row is Row 3, and the bottom row is Row
4. The third integer designates the column of the
matrix card. The 10 matrix columns are displayed
by the channel status display. The assignments
for all matrix card channels are presented in Fig-
ure 3-4.
If, for example, CARD 1 in Figure 3-3 happened
to be a Model 7012 matrix card, the following
channels would be closed:
Channel 1!2!3 (Slot 1, Row 2, Column 3)
Channel 1!4!9 (Slot 1, Row 4, Column 9)
All other card types:
All non-matrix type switch-
ing cards use the two-integer format to express
channel assignments. The first integer, like the
matrix card, designates the slot number. The sec-
ond integer designates switch card channel num-
ber. The channel assignments for these card types
are presented in Figure 3-5.
If, for example, CARD 2 in Figure 3-3 happened
to be a Model 7011 multiplexer card, the follow-
ing channels would be closed:
Channel 2!14 (Slot 2, Channel 14)
Channel 2!36 (Slot 2, Channel 36)
For the Model 7011 multiplexer card, Channel 14
corresponds to Bank 1, Relay 4, and Channel 36
corresponds to Bank 3, Relay 6. See the Model
7011 instruction manual for details.
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