Keysight Technologies B2960A User manual

Keysight Technologies
Using an External Trigger to Generate Pulses with
the B2960A
B2960A 6.5 Digit Low Noise Power Source
Demo Guide

02 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
Introduction
The Keysight B2960A 6.5 Digit Low Noise Power Source is a bench-top power supply
with revolutionary capabilities and functions not previously available. It can generate
either voltage or current with 6.5 digits of resolution while also monitoring them, which is
essential for a variety of measurement applications.
It also has an arbitrary waveform generation function that allows it to generate current/
voltage waveforms in formats such as sinusoid, square, trapezoid, ramp, triangle, and
exponential. In addition to these commonly used waveforms, user-dened arbitrary
waveforms with up to 100,000 points can be specied. These exible output capabilities
permit more thorough evaluation of circuits/devices/samples than are possible with
other instruments such as power supplies and sources.
This demonstration guide highlights the excellent pulsed signal output function and the
triggering capability via the B2960A series’ digital I/O signal port. The methodology
involves setting the pulse response of the B2960A series source to an external trigger
signal from a device-under- test (DUT). For example, the B2960A can be programmed
to respond to an external trigger with 2 V pulses with a 300 μs pulse delay and 200 μs
pulse width. Real-time waveform monitoring is possible by adding an oscilloscope to the
test setup.
Required Instrument and Accessories
All of the accessories required to perform the demos described in this demonstration guide
are provided in a demo kit that is included with Keysight B2962A demo units except for the
N1294A-031 and an oscilloscope. The kit includes items such as a Combo Test Lead Kit, and
a resistor.
Keysight B2961A/62A 6.5 Digit
Low Noise Power Source
U8201A Combo Test Lead Kit
1.1 kΩ Resistor
N1294A-031 GPIO - BNC
Trigger Adapter
Keysight Oscilloscopes
(MSO-X 4000 Series is shown)

03 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
Concept
Figure 1 illustrates the connection diagram and basic setup conditions used in the demo
to make the B2960A series generate pulses whenever it receives an external trigger sig-
nal. Use the settings shown below to program the B2960A source. Connect an oscillo-
scope to the test setup to monitor the results.
Figure 1. Connection diagram and basic condition
Figure 2 shows the parameters used to dene the timing parameters of the pulses from
the instrument’s front panel. Once these parameters have been specied, the source
value is output immediately after pressing . Next, after conguring an appropriate
trigger condition and initiating the channel, the instrument will be ready to receive an
external trigger signal and generate pulsed output.
Figure 3 shows the external trigger signal requirements to initiate device action on the
B2960A series. Positive or negative logic can be used.
A-
-
V
High Force
Low Force
B2961A/B2962A
DUT
DUT : 1.1 kΩResistor
Source Mode : Voltage
Pulse Base (Source value) : 0 V
Pulse Peak : 2 V
Pulse Delay : 300 μs
Pulse Width : 200 μs
Count : Any or INF.
Current Limit : 10 mA
External Trigger Signal
Pin 9 (Digital I/O)
Figure 2. Timing chart for the pulsed outputs
External TriggerOutput ON
Source Value
Output
Off State
V or I
Time
TPD TPW
Pulse
Peak Value
TPD TPW TPD TPW
TSP TSP TSP
TPW : Pulse WidthTPD : Pulse Delay TSP : Source Trigger Period
tW: Trigger Pulse Width > 10 µs
tW
V
Time
Positive Logic
5 V
V
Time
Negative Logic
5 V tW
Figure 3. External trigger signal requirements

04 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
Setup
Connection
1. Connect the black banana cable of the U8201A to the B2960A’s Ch1 Low Force Terminal.
2. Connect the red banana cable of the U8201A to the B2960A’s Ch1 High Force Terminal.
3. Clip the end of the 1.1 kΩ resistor with the black alligator clip of the U8201A.
4. Clip the other end of the 1.1 kΩ resistor with the red alligator clip of the U8201A.
5. Probe across the 1.1 kΩ resistor to monitor the output using the oscilloscope’s Ch1.
6. Connect the Pin 9 of the B2960A’s Digital I/O Port to the external trigger signal source and
the oscilloscope’s Ch2 using the BNC cables, the N1294A-031, wiring, etc.
Oscilloscope setup
1. Set the Ch1 vertical scale to 500 mV/div.
2. Set the Ch2 vertical scale to 5 V/div.
3. Set the horizontal scale to 500 μs/div.
1.1 kΩ
Resistor
To oscilloscope’s input Ch 1
B2960A
External Trigger Signal
BNC Cable BNC Cable
N1294A-031 BNC Cable To oscilloscope’s input Ch 2
U8201A

05 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
LAB: Using external trigger signals and B2960A series power source to analyze a
device-under-test (DUT)
Objective
This demo illustrates the ability of
a B2960A series power source to
respond to an external trigger with
pre-specied settings: Pulse voltage,
pulse delay and pulse width
Procedure
1. Change View mode to Channel 1
Single View
2. Congure the pulse condition
3. Congure the trigger condition
4. Disable an internal source wait time
5. Initiate the channel to wait for an
external trigger signal
6. (Optional) Abort the channel to stop
waiting for an external trigger signal
Demonstration
1. Change View mode to Channel 1 Single View
1) Press repeatedly until the Channel 1
Single View appears on the screen.
2. Congure the pulse condition
1) Press to edit the Source function, and then select to set the Source
function to Voltage source.
2) Press to edit the Source value, and then enter 0 V to set the Source value to 0 V.
3) Press to edit the Limit value, and then enter 10 mA to set the Limit value to 10 mA.
4) Press to change the keys shown in Assist keys, and then press to
show the Pulse Sub-Panel.

06 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
5) Press , then press to turn on Pulse source mode. After turning on the
Pulse source mode, you can see the Source Shape which shows the pulse source mode
enabled.
6) Rotate to select Channel 1 Pulse Parameters and set them up as below.
(Peak: 2 V, Delay: 300 μs, Width: 200 μs)
3. Congure the trigger condition
1) Press to show the Trigger Sub-Panel.
2) Rotate to edit the Trigger type, and then select to set the Trigger type
to MANUAL.
3) Rotate to select the Source trigger period and press to edit it. Then
enter 500 μs to set the Source trigger period to 500 μs, which is the sum of the
pulse delay and the pulse width.

07 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
4) Rotate to select the Source trigger source and press to edit it.
5) Press to change the keys shown in Assist keys, and then press to set the
Source trigger source to EXT9.
6) If you aren’t on the top of the Function menu, press repeatedly to return to the
top level.
7) Press , , , and then press to open the DIO
Conguration dialogue.
8) Press to edit the Digital I/O pin number.
On the top level of the Function menu
In the middle level of the Function menu
No tree structure can be seen
Some tree structure can be seen
(1) Press More…
(2) Press I/O
(3) Press DIO
(4) Press Config

08 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
9) Press repeatedly until appears in the Assist keys and then select
to specify the Digital I/O pin number, the properties of which are congured.
10) Rotate to select the Input/output function and press to edit it. Then
press to set it to Trigger input
11) Rotate to select the Polarity and press to edit it. Then press to
set it to Positive polarity.
12) Press to save your settings.
13) 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.

09 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
14) Or press to set it to INFINITY if you’d like to continue to source pulses. If you
set the trigger count to INFINITY be sure you abort the process at the end of the test.
4. Disable an internal source wait time
The B2960A series has internal wait time parameters to adjust the timing to source and
measure in order to have the measurements made under the exact source condition as
specied. However, it is required to disable it to source pulses at the exact timing as
specied by external trigger signals
1) If you aren’t on the top of the Function menu, press repeatedly to return to
the top level.
2) Press , , and then press to open the Wait Control
dialogue.
3) Press and select to disable the Source wait time.
On the top level of the Function menu
In the middle level of the Function menu
No tree structure can be seen
Some tree structure can be seen
(1) Press Config
(2) Press Common
(3) Press Wait

10 | Keysight | Using an External Trigger to Generate Pulses with the B2960A – Demo Guide
4) Press to save your settings.
5. Initiate the channel to wait for an external trigger signal
1) If you aren’t on the top of the Function menu, press repeatedly to return to
the top level.
2) Press , , , and then press to make the channel 1
be ready to receive an external trigger signal.
Now, the B2960A series is ready to receive an external trigger signal. Send the external
trigger signal to the B2960A series to generate a pulsed signal.
On the top level of the Function menu
In the middle level of the Function menu
No tree structure can be seen
Some tree structure can be seen
(1) Press Trigger
(2) Press Initiate
(3) Press Trans.
(4) Press Ch 1
Output from Ch1
External Trigger Signal
Actual Output Example
200μs
2 V