SIGLENT SAP8000D 8 GHz Differential Active Probe | SAPBus Probe
The SIGLENT SAP8000D is made for professional engineers who need accurate high-bandwidth differential measurements. With its 8 GHz bandwidth and SAPBus interface, it is an excellent match for compatible SIGLENT oscilloscopes in advanced R&D, design validation and high-speed electronics testing. The included probe heads and accessories make it suitable for a wide range of PCB probing situations, including solder-in, socketed and single-ended measurements.
SAP8000D — 8 GHz differential active probe
The SAP8000D is made for engineers who need accurate, high-bandwidth differential measurements. With 8 GHz of bandwidth, low noise and a very low 300 fF differential input capacitance, it introduces minimal loading to the circuit under test — so what you see on screen is what the circuit really does.
It connects through Siglent’s SAPBus interface, drawing power and communication straight from the oscilloscope — no external supply — and automatically reports its model, serial number, bandwidth, impedance, capacitance and attenuation to the scope. A ÷10 ratio, ±2.5 V dynamic range, ±12 V offset and 20 kΩ differential input, with a full set of solder-in and socketed heads, make it ready for almost any high-speed connection.
Why the SAP8000D
8 GHz bandwidth
A DC-to-8 GHz differential front end resolves the fastest edges, serial links and clocks with flat response and low noise.
Only 300 fF loading
An ultra-low 300 fF differential input capacitance (20 kΩ) barely touches the circuit under test, so your measurement reflects reality.
Plug-and-play SAPBus
The SAPBus interface powers the probe from the scope — no external supply — and auto-reports model, serial, bandwidth, impedance and attenuation.
Interchangeable heads
Solder-in and socketed, differential and single-ended heads (DSI-01/SSI-01/DRP-01/SRP-01) adapt to almost any connection point.
Who it’s for & best applications
The SAP8000D is for engineers characterising the fastest signals — where an ordinary passive probe would load the circuit and roll off the bandwidth. Its 8 GHz bandwidth, 300 fF input capacitance and true differential front end let you probe high-speed serial links, clocks and power-integrity rails with minimal disturbance, on an SDS6000 Pro or SDS7000A oscilloscope.
- High-speed digital & signal-integrity engineers
- SerDes / high-speed serial-link developers
- Power-integrity (PDN) measurement
- RF & high-frequency analog design
- Labs running SDS6000 Pro / SDS7000A
- High-speed serial (PCIe, USB, Ethernet, DDR) signal integrity
- Differential clock & data eye / jitter analysis
- Power-distribution-network ripple & noise
- Fast-edge timing, reflections & crosstalk
- Amplifier & filter characterisation, EMI/SI debug
Specifications
| Probe type | Differential active probe (SAPBus) |
| Bandwidth | DC to 8 GHz |
| Attenuation (gain) | ÷10 |
| Differential input capacitance | 300 fF |
| Differential input resistance | 20 kΩ |
| Single-ended input resistance | 10 kΩ |
| Input dynamic range | ±2.5 V |
| Offset voltage range | ±12 V |
| Power | From the oscilloscope via SAPBus — no external supply |
| Probe identification | Auto-read on scope: model, serial, bandwidth, impedance, capacitance, attenuation |
| Connection heads | Solder-in (DSI-01 / SSI-01) & socketed (DRP-01 / SRP-01), differential & single-ended |
| Compatible oscilloscopes | SDS6000 Pro & SDS7000A series (SAPBus interface) |
| Warranty | 1 year |
From the official SAP8000D user manual; subject to change, errors & omissions excepted.
In the box
The SAP8000D ships as a complete kit — probe, both head types and a full connection accessory set.
Standard accessories also include 10 cm ground wires, straight / pogo / swivel pins, silver wire, colored rings, thickness gauge and double-sided tape.
Compatible oscilloscopes
The SAP8000D uses the SAPBus interface — supported by Siglent’s high-end SDS6000 Pro and SDS7000A series. The scope powers the probe and reads its information automatically.
- 3D Positioner PP301
- Two-legged Positioner PP201
- SAP-SMA01 SMA adapter
- SAP-DBT01 browser tip
Ask us to add optional positioners and adapters to your order.
Add 8 GHz differential probing to your bench
Pair the SAP8000D with an SDS6000 Pro or SDS7000A, or ask us which probe heads suit your connection points.