Keithley 7065, Инструкция по эксплуатации

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PA-392 Rev. C / July 2009 5 of 21
Programming a Channel List
One of the key advantages of the Model 7001 over the older Model 705 Scanner is that you can open or close a
number of crosspoints simultaneously, instead of having to open or close each crosspoint individually. In order to
use this feature, you must first program a channel list, as described below.
1. If necessary, press the SCAN LIST key to display the following:
SELECT CHANNELS
2. If any channels are presently displayed in the list, press the CLEAR LIST key to clear them.
3. Using the numeric keys, enter the slot, row, and column of the first channel in the list, then press ENTER.
4. Repeat step 3 as necessary for as many channels (crosspoints) as required for the specific test (use the
X
key
to enter channel separators and terminate the channel list). While entering channels, you can use the DELETE
and INSERT keys to erase or add channels in the middle of a list as necessary. You can also use the CLEAR
LIST key to erase the entire displayed channel list.
Closing and Opening Channels
Once a channel list is programmed, simply press the CLOSE key to close all channels (crosspoints) in the list
simultaneously. The instrument will indicate the closed channels by turning on the associated channel status
indicators.
To open all channels in the list, simply press the OPEN or OPEN ALL key.
Storing and Recalling Channel Lists in Memory
Since all Hall and resistivity measurements require multiple crosspoint closure sequences, it can still become
somewhat tedious to enter a separate channel list for each step in the procedure. A better way is to program channel
lists, store them in memory ahead of time, and then recall them one-by-one while progressing through the test
procedure (see below for a summary of channel lists for the various tests described in the Model 7065 manual).
Proceed as follows:
1. Program the channel list as described above.
2. Press the CLOSE key to close the channels in the channel list.
3. Press the STORE key.
4. Use the numeric keys to enter the memory location in which you wish to store the current channel list, then
press ENTER.
5. Repeat steps 1 through 4 for each channel list required.
Once the channel lists are programmed, you can recall them simply by pressing the RECALL key, entering the
memory location with the numeric keys, and then pressing ENTER. Note that all channels (crosspoints) in the list
will be closed immediately upon recall. You can also scan through memory locations by setting up a scan list; see
the next paragraph for details.
Scanning Through Channel Lists
The Model 7001 can be programmed to scan through channel lists already stored in memory by setting up a scan
list of memory locations. You can then use the STEP key or other appropriate trigger stimulus to cycle through the
channel lists instead of having to recall each memory location individually (see the Model 7001 Instruction Manual
for more details on triggering).
Set up a scan list as follows:
1. Program your channel lists, and then store them in the desired memory locations, as previously explained.