The Z-Active Differential Probe Family from Tektronix is a high-speed differential probing solution built on the Z-Active probing architecture, a hybrid approach composed of a distributed attenuator topology feeding an active probe amplifier. The family comprises two models, the P7313 and the P7380, and uses a tiny passive probe tip element that is separate from the amplifier to extend the usable reach of the probe. The architecture maintains high DC input resistance while presenting a higher AC impedance than previous probe architectures, combining high DC impedance like existing active probes with the stable high-frequency loading of Z0 probes.

These differential probes are intended for high-speed serial and memory bus measurement work. Listed application examples include, but are not limited to, PCI-Express I and II, Serial ATA II, USB 2.0, DDRII, Rambus, and XAUI. The interchangeable Tip-Clip assembly system lets the same probe move between solder-in, handheld, and fixtured connections, so a solder-in probe can become a handheld tool simply by switching tips.

ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, so the instruments and accessories we list are equipment we keep on hand rather than source on demand. Every used unit is inspected and functionally verified in-house against the manufacturer's specifications before it ships, while new units ship factory-sealed exactly as received. That combination of held inventory and hands-on verification of pre-owned stock is what lets us stand behind the condition of what we sell.

Compare Other Models in This Series

The Z-Active Differential Probe Family is built around the Z-Active probing architecture and is offered in two models, the P7313 and the P7380. Both share the same hybrid topology, a distributed attenuator feeding an active probe amplifier, and the same interchangeable Tip-Clip connectivity system; they differ primarily in headline bandwidth and the rise-time and high-frequency loading figures that follow from it.

Across the family the probes provide high bandwidth, excellent step response, low loading, and high CMRR, with user-selectable 5X or 25X attenuation, a 100 KΩ differential DC input resistance, and a TekConnect interface. The shared Tip-Clip assemblies let either model switch between solder-down, handheld, and fixtured probing.

Each model below is its own dedicated product page with condition-matched pricing for the pre-owned configuration. Select the model that matches your bandwidth and connectivity requirements, then choose the listing that reflects the condition and price you need.

The two models differ chiefly by bandwidth tier: the P7313 is specified at greater than 12.5 GHz typical bandwidth, while the P7380 is specified at greater than 8 GHz typical. That difference carries through to rise time, where the P7313 is guaranteed at less than 40 ps (10% to 90%) versus less than 55 ps for the P7380, and to AC loading, where differential Zmin is greater than 250 Ω for the P7313 and greater than 290 Ω for the P7380. Published CMRR figures also extend to higher frequencies on the P7313, including a greater than 15 dB figure at 12.5 GHz.

The models also differ in their accessory complements: the P7313 includes high-bandwidth flex Tip-Clip assemblies and a wire replacement kit not listed for the P7380, while the P7380 includes large-resistor Tip-Clip variants of its own. The comparison table that follows lists the per-model bandwidth, rise time, AC loading, and accessory differences side by side.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Accessories Supplied

• Pouch, Nylon Carrying Case with Inserts (1 each)
• Accessory Performance Summary and Reorder Sheet (1 each)
• Product Identification Label for Carrying Case (1 each)
• User Manual – Printed. Includes Reply Card and CD (1 each)
• BNC (M)-to-Minigrabber Adapter (1 each)
• Anti-static Wrist Strap (1 each)
• Magnifying Glasses (1 each)
• Calibration Data Report (1 each)
• Accessory Box and Contents (1 each)
• Attachment Kit (1 each)
• Color Band Kit (1 each)
• Large Resistor, 1/8 W, 20 mil dia Tip-Clip Assembly (3 each)
• Small Resistor, 1/16 W, 8 mil dia Tip-Clip Assembly (3 each)
• Short Flex, Large Resistor 1/8 W Tip-Clip Assembly (3 each)
• Probe Tip-Clip Assembly, Short Flex – Small Resistor (3 each)
• Medium Flex, Large Resistor 1/8 W Tip-Clip Assembly (3 each)
• Probe Tip-Clip Assembly, Medium Flex – Small Resistor (3 each)
• Probe Tip-Clip Assembly, Long Flex – 1/8 watt (3 each)
• Long Flex, Small Resistor Tip-Clip Assembly (3 each)
• Tip-Clip Ejector (kit of 3) (1 each)
• Adhesive Tip-Clip Tape (strip of 10) (3 each)

Product Core & Specifications

Important: Non-destructive input range: ±15 V.

Recommended pairing: add the Tektronix P7380HHA Handheld Probe Adapter, which includes the Variable Spacing Tip-Clip Kit, for handheld probing applications.

Important: Tip-Clip Ejectors and Tip-Clip Tape are shipped standard with the 020-xxxx-xx Tip-Clip Assembly Kits.

Important: For details on making single-ended (ground referenced) measurements with these differential probes, see application note 60W-18344-0, “Making Single-ended Measurements with Differential Probes.”

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.