Keithley 3721-ST User Manual

Series 3700A System Switch/Multimeter Reference Manual Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018 11-113
dataqueue.count
This attribute contains the number of items in the data queue.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (R)
Yes
Not applicable
Not applicable
Not applicable
Usage
count = dataqueue.count
count
The number of items in the data queue
Details
The count is updated as entries are added with dataqueue.add() and read from the data queue
with dataqueue.next(). It is also updated when the data queue is cleared with
dataqueue.clear().
A maximum of dataqueue.CAPACITY items can be stored at any one time in the data queue.
Example
MaxCount = dataqueue.CAPACITY
while dataqueue.count < MaxCount do
dataqueue.add(1)
end
print("There are " .. dataqueue.count
.. " items in the data queue")
dataqueue.clear()
print("There are " .. dataqueue.count
.. " items in the data queue")
This example fills the data queue and prints the number of items in the queue. It then clears the queue and
prints the number of items again.
Output:
There are 128 items in the data queue
There are 0 items in the data queue
Also see
dataqueue.add() (on page 11-110)
dataqueue.CAPACITY (on page 11-111)
dataqueue.clear() (on page 11-112)
dataqueue.next() (on page 11-114)
Using the data queue for real-time communication (on page 10-61)

Keithley 3721-ST Specifications

General

Brand	Keithley
Model	3721-ST
Category	Multimeter
Language	English