Keithley 7001, Инструкция по эксплуатации

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Getting Started
3-18
Note: RESET (Step 1) configured the arm layer for IM-
MEDIATE arming, and for an arm count of one. Both of
these arm conditions are appropriate for this example.
Thus, arm layer configuration is not necessary.
Step 6. Perform the scan.
To perform the scan, simply press the STEP key. On the
display, the scan will arm (ARM indicator will turn on),
and the mainframe will scan through the channels of
the scan list three times. At the conclusion of the third
scan, the Model 7001 will return to the idle state (ARM
indicator will turn off). Note however that the last
channel in the scan list remains closed.
NOTE
The last channel in the scan remains
closed. If your test requires that the
last channel open after the scan, pro-
ceed to the next step.
Step 7. Open the last channel
To have the last channel open at the conclusion of the
third scan, you will need to assign a blank channel pat-
tern (all channels open) from memory as the last chan-
nel entry in the Scan List.
To save a blank channel pattern in memory, perform
the following steps:
1. Display the Channel List (SELECT CHANNELS)
and press OPEN ALL to open all channels.
2. Press STORE. The following typical message will
be displayed:
STORE CHANS AT #001
3. To store the blank channel pattern in memory loca-
tion 1, press ENTER. Note that the blank channel
pattern could have been stored at any one of the
100 memory locations (1 to 100) by keying in the
desired value and then pressing ENTER.
With a blank channel pattern stored at memory loca-
tion 1 (M1), add it to your Scan List as follows:
1. Display the scan list (press SCAN LIST if neces-
sary).
2. Use the cursor key to position the cursor at the
end of the scan list.
3. Enter the blank channel pattern by pressing “M”,
“1” and then or ENTER to terminate the Scan
List.
SCAN CHANNELS 1!1, 1!3-1!6, 2!1!1, 2!2!2-2!2!5, M1,
Repeat the scans by again pressing STEP. At the conclu-
sion of the third scan, the last channel (Channel 2!2!5, if
using the scan list above), will open.
3.7 IEEE-488.2 and SCPI basics
The following paragraphs discuss fundamental infor-
mation concerning operation over the IEEE-488 bus.
Detailed information on operating the instrument from
over the bus is contained in Section 5 of this manual.
SCPI overview
IEEE-488.2 defines a syntax for sending data to and
from instruments. It also defines a set of Common
Commands that are used to perform basic operations
such as reading status registers, providing triggers and
resetting the instrument to default conditions.
SCPI (Standard Commands for Programmable Instru-
ments) defines a standard set of commands (and for-
mat) to control every other aspect of instrument
operation. Together, IEEE-488.2 and SCPI create a com-
mand structure for all programmable instruments.
Compatibility
An instrument that uses the IEEE-488.2 standard and
SCPI does not have any special hardware require-
ments. The IEEE-488 interface that you used with the
old standard will work with the new standard. Simply
connect the Model 7001 to a computer that is equipped
with an IEEE-488 interface.
NOTE
The term GPIB (General Purpose In-
terface Bus) is used in this manual and
in the menu structure of the instru-
ment. GPIB is simply another term for
the IEEE-488 bus.
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