PicoConnect gigabit digital passive test probes
A family of high-performance gigabit test probes allowing cost-effective fingertip browsing of broadband data streams out to 18 Gb/s. These include the now ubiquitous USB 2 & 3, HDMI 1 & 2, Ethernet, PCIe, SATA and LVDS standards.
Cost-effective test and measurement solutions have struggled to keep up with the increased use of broadband digital communications, particularly in the field of low-invasive transmission line probing solutions. With less than 0.4 pF tip capacitance and ground-referred loading of 220 Ω to 910 Ω, overall the PicoConnect probes are less invasive than the majority of existing and more costly probing solutions. To achieve measurement accuracies down to a few percent they are ratio-compensated for their typical application: the probing of transmission lines and ports between 40 Ω and 100 Ω (80 Ω to 200 Ω differential).
Suited to interfacing with any measuring instrument with 50 Ω inputs, PicoConnect probes allow broadband oscilloscope and spectrum analyzer users to browse circuitry, backplanes, interconnect and systems, typically without interrupting their function, and to do so across multiple channels without breaking a budget. They are particularly cost-effective in applications ranging from 1 Gb/s to 12 Gb/s.
Capture real-world gigabit data or eye without disturbing data flow. HDMI eye for data on a live monitor feed.
The probe family offers division ratios of ÷5, ÷10 and ÷20 with impedances to suit low-voltage, high-speed, typically digital applications. For each ratio there is a DC or AC coupled option, the latter important when DC bias must not be disturbed (as with HDMI, ECL, PECL and LVDS). The whole family is realized as a set of interchangeable SMA(f) probe heads that can be used with any appropriate 50 Ω cable, or accessories such as filters, dividers, amplifiers and further attenuation.
PicoConnect probes are specified and characterized with a supplied 085 high-performance flexible coaxial cable, with which they achieve market-leading flatness and pulse response. The innovative in-PCB coplanar construction (patent pending) guarantees underlying microwave integrity along with mechanical precision, strength and electromagnetic immunity. The passive design is inherently resistant to static discharge and demonstrates no significant overload recovery latency or error. The PicoConnect probes and multi-head probe kits are provided with solder-in accessories in a convenient carry and storage case.
| Model | 921 | 922 | 923 | 924 | 925 | 926 |
|---|---|---|---|---|---|---|
| Nominal division ratio | 20:1 | 10:1 | 5:1 | |||
| Bandwidth (–3 dB) | > 6 GHz | > 7 GHz | > 9 GHz | |||
| Max. usable data rate (fundamental) | 12 Gb/s | 14 Gb/s | 18 Gb/s | |||
| Max. usable data rate (3rd harmonic) | 4 Gb/s | 4.6 Gb/s | 6 Gb/s | |||
| Max. usable data rate (5th harmonic) | 2.4 Gb/s | 2.8 Gb/s | 3.6 Gb/s | |||
| Transition time | < 58.3 ps | < 50 ps | < 38.8 ps | |||
| Probe tip impedance (nominal) | 515 Ω | 250 Ω | 220 Ω | |||
| Probe tip capacitance (typical) | 0.3 pF | |||||
| Probe tip capacitance (maximum) | 0.4 pF | |||||
| Accuracy for line Z0 = 40 Ω to 60 Ω[1] | < ±0.20 dB (±2.4%) | < ±0.27 dB (±3.1%) | < ±0.25 dB (±2.9%) | |||
| Accuracy for line Z0 = 0 Ω to 100 Ω[2] | < ±0.48 dB (±5.6%) | < ±0.86 dB (±10.4%) | < ±0.90 dB (±10.9%) | |||
| Nominal error for line Z0 = 75 Ω[3] | < –0.19 dB (–2.2%) | < –0.40 dB (–4.5%) | < –0.48 dB (–5.3%) | |||
| Continuous voltage[4] | 7 V AC RMS | 7 V RMS | 5 V AC RMS | 5 V RMS | 5 V AC RMS | 5 V RMS |
| DC blocking voltage (max.) | 50 V DC | - | 50 V DC | - | 50 V DC | - |
| Peak voltage[5,6] | < 25 V | |||||
| Mark:space at peak voltage | < 1:20 (5%) | < 1:30 (3.3%) | < 1:30 (3.3%) | |||
| Coupling[4] | AC | DC | AC | DC | AC | DC |
| Low-frequency cut-off (–3 dB) | 70 kHz | - | 140 kHz | - | 160 kHz | - |
| Pulse /eye droop | > 20 ns / % | - | > 10 ns / % | - | > 10 ns / % | - |
| Flatness (±0.5 dB) | 210 kHz to 2 GHz | DC to 2 GHz | 420 kHz to 2 GHz | DC to 2 GHz | 480 kHz to 2 GHz | DC to 2 GHz |
| Output impedance[6] (for test node impedance 50 Ω) | 54 Ω matched | 48 Ω matched | 187 Ω unmatched | |||
| Additive voltage noise @ 23 °C | 0.9 nV/√Hz | 0.9 nV/√Hz | 1.6 nV/√Hz | |||
| Environment | |
|---|---|
| Operating temperature range | 0 to 50°C |
| Storage temperature range | –20 to 70°C |
| Temperature range for stated specifications | 15 to 40°C |
| Operating humidity range | 5% to 80% RH non-condensing |
| Storage humidity range | 5% to 95% RH non-condensing |
| Altitude range | up to 2000 m |
| Pollution degree | 2 |
| Safety approvals | EN61010-031:2002+A1 2008 safety requirements for hand-held probe assemblies for electrical measurement and test |
| EMC approvals | Not applicable |
| Environmental approvals | 2012/19/EU - Waste Electrical and Electronic Equipment 2011/65/EU - Restriction of use of certain Hazardous Substances in Electrical and Electronic Equipment |
| General | |
|---|---|
| Output connector (probe head) | SMA(f |
| Supplied cable | 60 cm SMA(m-m) precision unsleeved high-flex 085 microwave coaxial cable (unsleeved and 30 cm options also available) |
| Supplied accessories | Pack of replacement probe tips; two coils of solder-in gold-plated wire; SMA-to-BNC adaptor (with RF, microwave and pulse models only) |
| Dimensions (probe head) | 68 x 19 x 11 mm |
| Nominal probe tip pitch | 5 mm |
| Weight | 5 g |