Using The Ta299 D9-Dual Bnc Adaptor; Using The Ta271 D9-Bnc Adaptor - PICO PicoScope 4444 Kurzanleitung

Quick Start Guide
1.8

Using the TA299 D9-dual BNC adaptor

The TA299 D9-dual BNC adaptor allows you to make differential
measurements using two single-ended probes with BNC
connectors.
The PicoScope 4444 will identify the TA299 adaptor, but not the
probes connected to it. Use the Channel Options menu in the
PicoScope 6 software to set up your probes, and compensate
them using the pins on the back of the scope unit.
1.8.1 Compensating a pair of probes for common-mode voltages
This example uses two TA375 probes set to 10:1 attenuation, but applies to any single-
ended attenuating probes with BNC connectors: just remember to adjust the Probes settings
accordingly.
1. Connect the TA299 adaptor to the scope channel
2. Connect two single-ended oscilloscope probes to the TA299 adaptor
3. Open the Channel Options menu and select the correct attenuation factor for your probe.
For 10:1 probes, this will be x10.
4. Set the Coupling control to DC
5. Set the Input Range to ±5 V
6. Set the Trigger Mode control to Auto
7. Decide which probe will be the positive probe and which will be the negative probe
8. Connect the positive probe to Cal + and attach its ground clip to Cal –
9. Attach the negative probe's ground clip to the negative probe tip
10. A square wave will appear on the PicoScope 6 display
11. Adjust the Collection Time until the display contains one cycle of the square wave signal
12. Adjust the positive probe: trim it until the waveform is as near ideal as possible, with no
overshoot or undershoot visible
13. Without disconnecting the positive probe, connect the negative probe to Cal + and attach
its ground clip to Cal –
14. Set the Trigger Mode to None
15. Trim the negative probe: aim for a null signal, with the amplitude as close to zero as
possible
16. With both probes compensated, you are now ready to test your signal
DO282-3
1.9
the steps below to compensate your probe using the pins on the back of the scope unit.
1.9.1
1.
2.
3.
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Using the TA271 D9-BNC adaptor

The TA271 D9-BNC adaptor converts the differential input of
the PicoScope 4444 to a single-ended input. This allows you
to connect conventional accessories such as single-ended
and differential voltage probes or current probes. The adaptor
grounds the negative input of the channel.
The PicoScope 4444 will identify the TA271 adaptor, but not the
probe connected to it. Use the Channel Options menu in the
PicoScope 6 software to set up your probe. If necessary, follow
Compensating a single-ended probe
Find the probe compensation pins (marked Cal) on the back of the PicoScope 4444 unit
Connect the probe tip to Cal + and the ground lead to Cal –
Follow the probe manufacturer's instructions to compensate your probe
PicoScope USB Oscilloscope
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