How to source square waveform

Transcription

Agilent B2961A/B2962A 6.5 Digit Low Noise Power Source
How to source square waveform
This material shows how to source square waveform using an example to source it to 1 kOhm resistor.
Figure 1 illustrates the connection and condition supposed in the example to source square waveform using the
B2961A/B2962A.
B2961A/B2962A
A
V
High Force
DUT
-
Low Force
Figure 1. Connection and condition supposed in the example
Figure 2 shows the waveform parameters to source square waveform with the front panel operation. In this case, the
specified source value is sourced immediately after turning on
instrument will source square waveform.
. Then, when you press
, the
tD : Delay
tP : Peak Time
tE : End Time
V or I
End
Start
Source
Value
Output
Off State
tD
Output ON
tP
tE
tD
tP
tE
tD
tP
Press Trigger
Figure 2. Waveform parameters to source square waveform
tE
Time
Sourcing finite square waveform
Step 1.
Press
Step 2. Press
source.
repeatedly until Single View for Channel 1 is shown in the display.
to edit the source function, and then select
(1) Press Mode
Step 3.
Press
Press
(2) Enter Source Value
to edit the limit value, and then enter 10 mA to set the limit value to 10 mA.
(1) Press Limit
Step 5. Press
the current.
(2) Press VOLTS (V)
to edit the source value, and then enter 0.5 V to set the source value to 0.5 V.
(1) Press Source
Step 4.
to set the source function to the voltage
(2) Enter Limit Value
to configure the monitor parameter, and then select
(1) Press Measure
(2) Press AMPS (I)
to set the monitor parameter to
Step 6. Press
Preview.
to change the keys shown in Assist keys, and then press
(1) Press Show Preview
Step 7.
Rotate and press
to show Waveform
(2) Waveform Preview appears
to edit the function. Then press
repeatedly until
is shown in
Assist keys.
(1) Rotate and press
Function
to edit
(2) Press More … until ARB SQUARE
is shown in Assist keys
Step 8. Press
to turn on Square Waveform Output. After turning on Square Waveform Output, you can see
Source Shape which shows the square waveform output.
(1) Press ARB SQUARE
Source Shape
Step 9.
Rotate
to select Channel 1 Waveform Parameters and set them up as below.
(Start: 0.5 V, Peak: 2 V, Count: 5, Delay: 2 ms, Peak Time: 5 ms, End Time: 3 ms)
Step 10. Press
repeatedly until Graph View is shown in the display.
Step 11. Press
to source the voltage, and then press
to source the waveform and monitor the
signal. (The status information will show
during sourcing the waveform.)
Step 12. Press
to adjust the scale of the graph after finishing waveform sourcing. Now you can see the
monitored result on the GUI of the B2961A/B2962A as bellow.
Result on GUI of B2961A/B2962A
If you’d like to confirm the output voltage waveform, take the following procedure.
Step 13. Rotate and press
to edit the Y-axis data type, and then select
to set the Y-axis data type to
the voltage.
Y-axis Data Type field
to select
(2) Press VOLTS (V)
Now you can see the monitored output voltage waveform on the GUI of the B2961A/B2962A as bellow.
Result on GUI of B2961A/B2962A
Result on Oscilloscope
Configuring Trigger Parameters
In the default setting, the B2961A/B2962A will monitor only the first waveform even if you set up the instrument to
source plural waveforms. However, if you modify Trigger Parameters properly, you can monitor the entire output on the
B2961A/B2962A without any oscilloscope.
For example, let’s try to change the parameters to capture the entire waveforms on Graph View of the B2961A/B2962A.
Step 1.
Press
Step 2. Press
Sub-Panel.
repeatedly until Ch1 Single View is shown in the display.
(1) Press More... (if necessary)
Step 3.
Press
Step 4.
Rotate
(2) Press Show Trigger
to edit the trigger type, and then select
(1) Press
to set the trigger type to TIMER.
(2) Press TIMER
to select Channel 1 Trigger Parameters and set them up as below.
(Measurement Trigger Count: 5000, Measurement Trigger Period: 10us)
Step 5.
Press
to show Trigger
repeatedly until Graph View is shown in the display.
Step 6.
Press
to source the waveform and monitor the signal.
(The status information will show
Step 7. Press
to adjust the scale of the graph after finishing waveform sourcing. Now you can see the
monitored result on the GUI of the B2961A/B2962A as bellow.
Sourcing continuous square waveform
If you’d like to source continuous waveform, take the following procedure.
Step 1.
Press
repeatedly until Ch1 Single View is shown in the display.
Step 2. If you don’t see Channel 1 Waveform Parameters, press
Waveform Parameters.
,
Rotate and press
Count
to edit Count and then press
to select
to show Channel 1
(2) Press Hide Options, Hide Pulse
or Hide Trigger
(1) Press More... (if necessary)
Step 3.
, or
to set Count to INFINITY.
(2) Press INF.
Step 4.
Press
to source continuous waveform.
Stopping sourcing continuous square waveform
If you are sourcing continuous waveform, you need to take the following procedure to stop sourcing continuous
waveform.
Step 1.
Step 2.
If you aren’t on the top of the Function menu, press
Press
repeatedly to return to the top level.
On the top level of the Function menu
Any tree structure can’t be seen
In the middle level of the Function menu
Some tree structure can be seen
,
,
, and then press
continuous arbitrary waveform.
(1) Press Trigger
(2) Press Abort
(3) Press Trans.
(4) Press Ch 1
to stop sourcing the
Sourcing square waveform without monitoring
If you’d like to source waveform without monitoring, you need to take the following procedure instead of pressing
to initiate only Transient (Source) Action.
Step 1.
Step 2.
Press
,
,
, and then press
to start sourcing the
continuous arbitrary waveform.
(1) Press Trigger
(2) Press Initiate
(3) Press Trans.
(4) Press Ch 1
Viewing the list of measurement results
The measurement results including the measurement time stamp can be referred by the following steps.
Step 1.
Step 2.
If you’d like to see the list of measurement results, press
, then press
to open
Measure Result dialogue.
(1) Press Result
(2) Press Measure
Step 3.
Rotate and press
(1) Rotate
field
Step 4. Press
type.
to select Data Type field.
to select Data Type
to select Data Type
(1) Press More …
Step 5.
(2) Press
Rotate and press
Data field
to select Time as the data
(2) Press TIME (t)
to select Data field. Then rotate
to select
to scroll the data list.
(2) Rotate
or press Assist key
to scroll the list
Sourcing square waveform when B2961A/B2962A receives an external trigger signal
If you’d like to set up the instrument to source square waveform when B2961A/B2962A receives an external trigger
signal, you need to take the following procedure to configure Trigger Parameters.
Figure 3 shows the timing chart for sourcing square waveform when the instrument receives an external trigger signal.
tD
tP
tE
V or I
: Delay
: Peak Time
: End Time
End
Start
Source
Value
Output
Off State
tD
Output ON
tE
tP
Initiate
tD
tP
tE
tD
tP
tE
Time
External Trigger
Figure 3. Timing chart for sourcing square waveform
Figure 4 shows the requirement to an external trigger signal to trigger the device action on the B2961A/B2962A. Both
positive and negative logic are available.
V
V
tW
5V
tW
5V
Time
Positive Logic
Time
Negative Logic
tW : Trigger Pulse Width > 10 µs
Figure 4. Requirement to an external trigger signal
Step 1.
Rotate and press
Count
to edit the function. Then enter 1 to set the count to 1.
to select
(2) Enter Count
Step 2.
Press
to show Trigger Sub-Panel.
(1) Press Show Trigger
Step 3.
Press
to edit the trigger type, and then select
(1) Press
Step 4.
(2) Trigger Sub-Panel appears
Rotate
to set the trigger type to MANUAL.
(2) Press MANUAL
to select the source trigger source and press
Step 5. Press
source to EXT1.
to edit it.
to edit Source Trigger Source
(1) Press More…
(2) Press EXT1
to set the source trigger
Step 6.
Step 7.
Press
,
,
, and then press
to open DIO Configuration
dialogue.
(1) Press More…
(2) Press I/O
(3) Press DIO
(4) Press Config
Step 8.
Press
and select
to specify the digital I/O pin number, the properties of which is
configured.
(1) Press
Step 9.
Rotate
(2) Press Pin 1
to select the input/output function and press
to edit it. Then press
it to the trigger input.
to edit
the input/output function
(2) Press TRIGGER IN
to set
Step 10. Rotate
to select the polarity and press
to edit it. Then press
to set it to positive
polarity.
the polarity
Step 11. Press
to edit
(2) Press POS.
to make the modification effective.
(1) Press OK to make the modification effective
Step 12. Rotate
to select the source trigger count and press
to edit it. Then enter the number of
trigger signals which will be sent to the instrument as the source trigger count.
Source Trigger Count
Step 13. Or press
to edit
(2) Enter Source Trigger Count
to set it to INFINITY if you’d like to continue to source square waveforms until it is aborted.
(1) Press INF.
It is required to abort the instrument to make it return to the idle state when you set the source trigger count to INFINITY.
Step 8.
Press
to make the instrument be ready to receive an external trigger signal.
(The status information will show
Now the instrument has been ready to receive an external trigger signal.
Output Signal
from a channel
Trigger Input
via Digital I/O
If you’d like to make the instrument return to the idle state before finishing sourcing all waveforms, you need to take the
following procedure.
Step 9.
Step 10. Press
,
,
, and then press
return to the idle state.
(1) Press Trigger
(2) Press Abort
(3) Press Trans.
(4) Press Ch 1
to make the instrument

How to source square waveform

Transcription

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