The Tektronix TCPA400 is a high-performance, dedicated current probe amplifier designed specifically for use with the TCP404XL AC/DC current probe. It forms a complete current measurement system capable of measuring up to 500 A continuous RMS and 750 A peak current, supporting a bandwidth of DC to 2 MHz.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | TEKPROBE Interface (BNC output with scale factor coding pins) |
| Display | None (LED indicator lights only) |
| Oscilloscope Compatibility | Oscilloscopes with TEKPROBE interface or any 50 Ω BNC input |
| Cooling | Internal fan |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 V to 264 V AC, 47 Hz to 440 Hz, max 50 W |
| Operating Temperature | 0 to 50 °C |
| Dimensions (W×H×D) | 130 mm × 156 mm × 292 mm |
| Weight | 1.75 kg |
| Form Factor | Benchtop (rackmountable with optional kit) |
System Performance with Compatible Probes
| Parameter | Value |
|---|---|
| Compatible Probe Model | TCP404XL |
| Bandwidth | DC to 2 MHz |
| Rise Time | ≤ 175 ns |
| Maximum Continuous Current (RMS) | 500 A |
| Maximum Peak Pulse Current | 750 A |
| DC Gain Accuracy | ±3% (warranted), ±1% (typical) |
| Display Noise (RMS) | ≤ 250 mA |
| Maximum Bare-Wire Voltage | Insulated wire only |
| Amp-Second Product | 50,000 A-µs |
Amplifier Characteristics
| Parameter | Value |
|---|---|
| Output Impedance | 50 Ω |
| Output Termination | Requires 50 Ω oscilloscope input |
| Signal Coupling | AC, DC |
| Deflection Ranges | 1 A/V, 10 A/V |
Connectivity & Interfaces
| Parameter | Value |
|---|---|
| Probe Input Connector Type | TEKPROBE current probe interface (proprietary multi-pin) |
| Signal Output Connector Type | 50 Ω BNC |
Control & Calibration Functions
| Parameter | Value |
|---|---|
| Degauss and Autobalance Control | Single-button manual control with integrated auto-routine |
| Manual Balance Adjustment | Buttons |
| Overload Indicator LED | Yes (red LED) |
| Degauss Needed Indicator LED | Yes (yellow LED) |
| Probe Open Indicator LED | Yes (red LED) |
| Selected Range Indicator LEDs | LEDs for 1 A/V and 10 A/V |
Power Specifications
| Parameter | Value |
|---|---|
| AC Input Voltage Range | 90 V to 264 V AC |
| AC Input Frequency | 47 Hz to 440 Hz |
| Power Consumption | 50 W maximum |
Environmental Specifications
| Parameter | Value |
|---|---|
| Non-Operating Temperature Range | -40 °C to +75 °C |
| Operating Humidity Range | 5% to 95% RH (to +30 °C), 5% to 85% RH (+30 °C to +50 °C) |
| Non-Operating Humidity Range | 5% to 95% RH (to +30 °C), 5% to 85% RH (+30 °C to +75 °C) |
| Operating Altitude | Up to 2,000 m |
| Non-Operating Altitude | Up to 12,192 m |
Compliance & Certifications
| Parameter | Value |
|---|---|
| Safety Certifications | UL61010-1, CSA C22.2 No. 1010.1, EN61010-1 |
| Electromagnetic Compatibility (EMC) | EN61326 Class A, FCC Part 15 Subpart B Class A |
Performance
| Parameter | Value |
|---|---|
| Warm-Up Time | 20 minutes |
| Degauss and Autobalance Cycle Time | 5 seconds (typical) |
| DC Gain Drift | ≤ 0.1%/°C (typically 0.05%/°C) |
| Output Offset Drift | ≤ 100 μV/°C (typically 20 μV/°C) |
Outputs
| Parameter | Value |
|---|---|
| Full-Scale Output Voltage | 1 V (into 50 Ω) |
Compliance & Safety
| Parameter | Value |
|---|---|
| Overvoltage Category | Category II |
| Pollution Degree | 2 |
Power
| Parameter | Value |
|---|---|
| Fuse Rating | 3.15 A, 250 V, Time-Lag (T), 5x20 mm |
Accessories
| Parameter | Value |
|---|---|
| Standard Accessories | 50 Ω BNC cable (012-0124-00), 50 Ω feedthrough termination (011-0049-02), Instruction manual, Certificate of Traceable Calibration |
| Optional Accessories | Travel case (016-1924-00), Rackmount kit (016-1922-00) |
Technology
AC/DC Current Measurement
Applications
Power electronics testing, motor drive analysis, power supply design