Description
A high-current clamp is only half of a measurement chain. The Tektronix TCPA400 probe amplifier is the other half: a current probe amplifier that drives the probe, conditions its signal and scales it for an oscilloscope. According to the listing, it pairs with the Tektronix TCP404XL. Lost in HCM offers the amplifier for rental or sale and arranges service on request.
One amplifier, one probe partner
The listing names a single compatible probe, the TCP404XL. That probe handles 500 A DC continuous, so the pair suits battery packs, traction drives and large DC supplies. Note also that the probe does not ship with the amplifier. Therefore, put both part numbers on one request if you own neither yet.
Amplifier bandwidth versus system bandwidth
Two numbers appear in the source, and yet they answer different questions. The amplifier on its own has DC to 50 MHz capability. With the TCP404XL attached, by contrast, the system covers DC to 2 MHz. So the probe, not the amplifier, sets the useful limit in this pairing. Plan your test around the 2 MHz figure.
Setting up the Tektronix TCPA400 probe amplifier
- Clamp the TCP404XL around one conductor, not around a supply and return pair.
- Plug the probe into the TCPA400.
- Run the amplifier output to a compatible oscilloscope interface or a correctly terminated input.
- Degauss and zero the system when the manual asks for it, then start the capture.
Because the probe, amplifier, cable and scope input behave as one system, check them together before a test campaign. In addition, keep the voltage category and insulation limits of the probe in view at every clamp point.
Where a rental makes sense
Battery and inverter projects often need high-current probing for one validation phase, then not again for months. In that case, renting the pair takes less effort than buying it. Meanwhile, test labs that run power work every week may want to own the set. Either way, list your oscilloscope model, expected current and frequency, then request a quote from Lost in HCM for the Tektronix TCPA400 probe amplifier. See the rest of our oscilloscope probes, visit tek.com for manuals, or contact SMK Vietnam.
TCPA400 buying questions
Does the TCPA400 come with a current probe?
No. Instead, the listing says to specify the probe separately.
Which probe works with it?
Only the TCP404XL, according to the source.
Why does the system stop at 2 MHz when the amplifier lists 50 MHz?
That 50 MHz figure describes the amplifier alone. With the TCP404XL attached, however, the listing gives DC to 2 MHz for the whole system.
Reviews
There are no reviews yet.