PICOPROBE® Model 34A | Active RF Probe up to 3 GHz
Measures fast RF signals up to 3 GHz at tiny internal circuit nodes—accurately and with minimal loading on the device under test.
- ✓ Active High-Impedance RF Probe for Internal Measurement Points
- ✓ 10 MΩ | 0.1 pF Input
- ✓ 20:1 Attenuation
- ✓ 120 ps
- ✓ and DC to 3 GHz
Active RF Probe Tip for Internal Circuit Nodes and On-Wafer Probing up to 3 GHz
PICOPROBE Modell 34A: Testing Small Measurement Points With Low Signal Impact
The GGB PICOPROBE® Model 34A is an active RF probe tip for measurements on internal nodes of RF circuits. In the probing setup, the probe tip contacts small measurement points precisely and places only a low load on the circuit. It routes the acquired signal to a 50-Ohm oscilloscope input. At the measurement point, the input has a nominal impedance of 10 MΩ in parallel with 0.1 pF; the frequency response extends from DC to 3 GHz (-3 dB).
Capturing Fast RF Signals Directly in the Circuit
Internal measurement points in RF circuits are sensitive to additional load at the contact point. The PICOPROBE® Model 34A therefore combines a frequency response from DC to 3 GHz with a low nominal input load. The active probe tip also transmits DC components in the signal path and captures fast signal edges with a rise and fall time of 120 ps for a 5 V pulse.
20:1 Signal at the 50-Ω Oscilloscope Input
At the measurement point, the active probe tip is designed for voltages from -7 V to +10 V. The 20:1 signal attenuation applies at the 50-Ω oscilloscope input and must be taken into account when reading the measurement instrument.
Choosing the Right Tungsten-Wire Tip for Fine Contact Points
Contacting is performed using replaceable tungsten-wire probe tips with wire diameters from 5 µm to 125 µm and corresponding tip radii. Fine tungsten-wire tips make it easier to contact small, sensitive measurement points. Larger wire diameters provide more mechanical reserve when higher contact force is required. Wire diameter and tip radius therefore have to match the measurement task and the probing setup.
Alternative Products
If your application calls for passive RF or microwave contacting instead of an active RF probe tip, the PICOPROBE® Model 10 Series is worth a closer look.
Related Product Categories
Support for Probe Tip Selection
Would you like to know which probe tip fits your measurement point, probing setup, and oscilloscope input? Send us your measurement task and the key requirements. The bsw expert team will be happy to support you in selecting the required probe tip.
Specifications
| Input Capacitance | 0.1pf |
|---|---|
| Input Resistance | 10.0 MΩ |
| Rise/fall time | 120 ps (5V pulse) |
| Frequency Response | DC to 3 GHz (-3dB) |
| Operating Range | -7V to +10V |
| Linearity | 0.5% |
| Gain Accuracy | ±3% |
| Signal Attenuation | 1 |
Options & Accessories
Replaceable probe tips - ordering variants by wire and tip diameter:
| 34A-4-5 | Wire diameter 5 µm, tip diameter < 0.1 µm |
|---|---|
| 34A-4-10 | Wire diameter 10 µm, tip diameter < 0.1 µm |
| 34A-4-22 | Wire diameter 22 µm, tip diameter < 1.0 µm |
| 34A-4-35 | Wire diameter 35 µm, tip diameter < 2.0 µm |
| 34A-4-60 | Wire diameter 60 µm, tip diameter < 3.0 µm |
| 34A-4-125 | Wire diameter 125 µm, tip diameter < 5.0 µm |
PICOPROBE® Standard-Power Supply:
| 110 V | |
| 230 V |
Scope of Delivery
| PICOPROBE® Model 28/29, probe tip with tungsten wire – depending on configuration |
| Power supply – depending on configuration |
Applications
| Measurements at internal test points of RF circuits |
| On-wafer probing on RF and microwave circuits |
| Characterization of fast RF signals up to 3 GHz |
| Development, design debug, and verification of RF circuits |
| Signal testing at sensitive measurement points with low input load |
Links & Downloads
Supplier
GGB Industries, der Erfinder der Picoprobe®-Produktlinie von Mikrowellen- und Oszilloskop-Tastköpfen, liefert bereits seit 1980 Messköpfe für On-wafer Messungen für die Halbleiterindustrie, beginnend mit einer Reihe hochohmiger Sonden für die Fehlersuche bei der Diagnose der internen Funktionsweise komplexer Logik- und Speicherchips. Seitdem hat GGB eine beeindruckende Anzahl an neuen, patentierten Lösungen entwickelt. Man kann also mit Fug und Recht behaupten, dass GGBs Stärken insbesondere handwerkliches Können, Präzision, Kundendienst und Problemlösung sind.
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