CT4121

CT4121 Datasheet 1.2 GHz Active FET Probe Kit Overview: Features: The CT4121 is a compact FET probe with very high input resistance and low input capacitance. With a 1.2 GHz bandwidth, this probe is ideal for timing analysis or troubleshooting high speed logic circuits, for design verification of disk drives, as well as for wireless and data communication design. The CT4121 can measure up to ±40 V (DC + AC peak). Compatible with oscilloscopes from all major manufacturers, the probe is powered by the included 9 V battery or direct from the oscilloscope using the included USB power lead. Technical data subject to change. © Cal Test Electronics 2017. ■■ ■■ ■■ ■■ ■■ ■■ 1.2 GHz bandwidth (-3 dB) Up to ±40 V (DC + AC peak) Attenuation 10x High accuracy (±2%) Power indicator LED SMD accessory kit caltestelectronics.com All specifications apply to the unit after a temperature stabilization time of 20 minutes over an ambient temperature range of 25 °C ± 5 °C. Electrical Characteristics Bandwidth (-3dB) 1.2 GHz Rise Time (probe only) 291 ps Attenuation ratio 10x Accuracy ±2% Input Dynamic Range (DC + AC peak) ±15 V Maximum Input Voltage (DC + AC peak) ±40 V Input Impedance 1 MΩ // 3 pF typical Output Voltage Swing ±1.5 V (driving 50 Ω oscilloscope input) Offset (typical) ±5 mV Adjustable output offset range ±28 mV Noise (typical) 0.3 mVrms Source Impedance 50 Ω Power Supply 9 V battery (included) or CT4122 USB power lead (included) or CT3723 power adapter (optional) Safety Specifications IEC 61010-031 CAT I Mechanical Characteristics Weight 200 g Dimensions 83 x 19 x 14 mm Cable Length 120 cm (Total) Environmental Characteristics Operating Temp/Humidity -10°C to 40°C / Up to 85% RH Storage Temp/Humidity -30°C to 70°C / Up to 85% RH Pollution Degree Pollution Degree 2 Altitude Operating: 3,000 m Nonoperating: 15,300 m Specifications are subject to change without notice. To ensure the most current version of this manual, please download the current version from our website: caltestelectronics.com Technical data subject to change. © Cal Test Electronics 2017. caltestelectronics.com Performance Data Plots Maximum Input Voltage Derating Curve Voltage (V) (DC + ACpeak) 100 10 1 105 106 107 108 109 Frequency (Hz) Figure 1 Maximum Input Voltage Derating Curve Input Impedance vs Frequency Data Graph Input Impedance (Ohm) 107 106 105 104 103 102 101 1 101 102 103 104 105 106 107 108 109 Frequency (Hz) Black - Measured by LCR meter Grey - Simulated by Altium software Figure 2 Input Impedance vs Frequency Data Graph Technical data subject to change. © Cal Test Electronics 2017. caltestelectronics.com Kit Contents: ■■ ■■ ■■ ■■ ■■ ■■ ■■ Active FET probe 50 Ω feed-through terminator (CT2944-50) USB power lead (CT4122) 9 V battery Offset adjustment tool User manual SMD kit ■■ (2) SMD test clip, gray (CT3659-8) ■■ (2) MicroLeads, 0.8 mm, Pin-Jack, 5 cm, Black/Red ■■ (2) MicroLeads, 0.8 mm, Pin-Jack, 10 cm, Black/Red ■■ (4) Ground pin, bent ■■ (6) Test tip, uninsulated, 0.8 mm x 11.6 mm Technical data subject to change. © Cal Test Electronics 2017. caltestelectronics.com