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4-16
Front Panel Operation
4.
5.
Step 7. Start the scan
Step 1 of this procedure placed the Model 7002-HD in the idle state. In this idle
state, a scan cannot be performed. The Model 7002-HD is taken out of the idle
state by pressing the STEP key.
Once out of the idle state, the scan is considered enabled. 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 pro-
grammed for a particular event, operation will not pass into the next layer until the
programmed 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.
Example 1:
ARM SPACING = IMMEDIATE
SCAN SPACING = TIMER, GPIB, MANUAL, or TRIGLINK
CHANNEL SPACING = TIMER, GPIB, MANUAL, or TRIGLINK
1.
2.
3.
4.
5.
6.
7.
8.
d.
TRIGLINK ⎯ With this selection, triggers received over the Trigger Link
will control arm spacing. A trigger will allow operation to proceed to the
scan layer.
From the SETUP ARM CONTROL menu, select ARM COUNT.
From the ARM COUNT menu, select one of following items to specify the
number of arms to be performed:
a.
INFINITE ⎯ With this selection, the number of arms is infinite.
b.
ENTER ARM COUNT ⎯ Use this selection to define the number of
arms (1 to 9999) to be performed.
Press OPEN ALL to open all channels and place the Model 7002-HD in the
idle state.
Press STEP to take the 7002-HD out of the idle state (ARM indicator turns
on).
The first scan spacing event will pass operation into the channel layer.
The first channel spacing event will scan the first channel in the scan list.
The next channel spacing event will scan the second channel.
The next scan spacing event will pass operation back into the channel layer.
The next channel spacing event will scan the first channel.
The next channel spacing event will scan the second channel and disarm
(idle) the scan.
Return to
Section 4 topics
Model 7002-HD User's Manual
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