Description
With 1.5 GHz of bandwidth, the Tektronix P6248 differential probe is the quicker sibling of the 1 GHz P6247. A differential voltage probe measures the signal between two points instead of from one point to ground. So it suits differential pairs and nodes that do not sit at ground. Lost in HCM rents and sells this probe and can arrange service on request.
The extra half gigahertz
The listing aims the P6248 at higher-bandwidth differential work on communications and high-speed digital circuits. For instance, serial transceivers, LVDS pairs and fast backplane lanes all benefit from more headroom. Meanwhile, the low-capacitance input, in the 200 kΩ class per the listing, keeps loading modest.
Listed figures
| Item | P6248 listing |
|---|---|
| Bandwidth | 1.5 GHz |
| Input impedance | 200 kΩ class, low-capacitance differential input |
| Attenuation | 1X, 10X |
| Maximum input range | ±25 V (DC + peak AC) |
| Interface | TekProbe |
Hooking the Tektronix P6248 differential probe to newer scopes
This probe uses the TekProbe interface. However, many TekVPI instruments need the TPA-BNC adapter, according to the listing. In addition, some platforms also need an external power supply. Therefore name your scope model when you ask for a quote, so Lost in HCM can include the right parts.
1X or 10X
Pick 1X for small signals where you want the most detail. Then move to 10X as the swing grows toward the ±25 V limit. Also keep both leads short and equal, because mismatched leads skew a fast pair. Either way, follow the manufacturer’s manual and ratings.
Getting a P6248
Rent it for a link validation, a design review or a short debug campaign. Alternatively, buy one for a lab that checks fast pairs every week. Send the scope model, signal range and accessory needs, then ask Lost in HCM for a quote on the Tektronix P6248 differential probe. You can also compare our oscilloscope probes, look up manuals on tek.com, or contact SMK Vietnam.
P6248 questions
P6248 or P6247: which should I choose?
Choose the P6248 when you need 1.5 GHz. Otherwise the 1 GHz P6247 covers slower work with the same ±25 V range.
Will it plug straight into a TekVPI scope?
Many TekVPI instruments need the TPA-BNC adapter, and some need external power too.
Where can I find the exact input capacitance?
Check the Tektronix datasheet, because the listing only gives a 200 kΩ class figure.
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