Keithley 7001 User Manual

Front Panel Operation
4-19
Step 6. Start the scan.
NOTE
To view the scan, exit from the CON-
FIGURE SCAN menu by pressing
EXIT until the instrument returns to
the channel status display state. If
needed, press SCAN LIST to display
the channels to be scanned.
Step 1 of this procedure placed the Model 7001 in the
idle state. In this idle state, a scan cannot be performed.
The Model 7001 is taken out of the idle state by press-
ing the STEP key.
Once out of the idle state, the scan is considered en-
abled. The scan will proceed according to how the
three layers are programmed. If Immediate spacing is
selected, operation will pass immediately into the next
layer. If spacing is programmed for a particular event,
operation will not pass into the next layer until the
event occurs.
Scanning examples:
The following examples assume two scans of a two-
channel scan list. All events in these examples can be
substituted by the STEP key. For example, if the instru-
ment is waiting for an EXTERNAL trigger event, you
can instead press STEP to provide the event.
Example 1:
ARM SPACING = IMMEDIATE
SCAN SPACING = TIMER, EXTERNAL, GPIB, MANUAL or
TRIGLINK
CHANNEL SPACING = TIMER, EXTERNAL, GPIB, MAN-
UAL or TRIGLINK
1. Press OPEN ALL to open all channels and place
the Model 7001 in the idle state.
2. Press STEP to take the 7001 out of the idle state
(ARM indicator turns on).
3. The first scan spacing event will pass operation
into the channel layer.
4. The first channel spacing event will scan the first
channel in the scan list.
5. The next channel spacing event will scan the sec-
ond channel.
6. The next scan spacing event will pass operation
back into the channel layer.
7. The next channel spacing event will scan the first
channel.
8. The next channel spacing event will scan the sec-
ond channel and disarm (idle) the scan.
Example 2:
ARM SPACING = IMMEDIATE
SCAN SPACING = IMMEDIATE
CHANNEL SPACING = TIMER, EXTERNAL, GPIB, MAN-
UAL or TRIGLINK
1. Press OPEN ALL to open all channels and place
the Model 7001 in the idle state.
2. Press STEP to take the 7001 out of idle state, and
operation into the channel layer.
3. The first channel spacing event will scan the first
channel.
4. The next channel spacing event will scan the sec-
ond channel.
5. Operation passes automatically back into the chan-
nel layer since IMMEDIATE scan spacing is select-
ed.
6. The next channel spacing event will scan the first
channel.
7. The next channel spacing event will scan the sec-
ond channel and disarm (idle) the scan.
Example 3:
ARM SPACING = MANUAL, GPIB, EXTERNAL or
TRIGLINK
SCAN SPACING = TIMER, EXTERNAL, GPIB, MANUAL or
TRIGLINK
CHANNEL SPACING = TIMER, EXTERNAL, GPIB, MAN-
UAL or TRIGLINK
1. Press OPEN ALL to open all channels and place
the Model 7001 in the idle state.
2. Press STEP to take the 7001 out of the idle state.
3. The arm spacing event allows operation to pass
into the scan layer.
4. The first scan spacing event passes operation into
the channel layer.
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Keithley 7001 Specifications

General

Brand	Keithley
Model	7001
Category	Switch
Language	English