The Rohde & Schwarz NRP-Z21 is a high-precision, three-path diode power sensor designed for continuous average power measurements. Operating across a wide frequency range of 10 MHz to 18 GHz with a 90 dB dynamic range, it delivers fast, reliable, and highly accurate RF power measurements. With its integrated USB-capable interface, it can be connected directly to a PC, laptop, or various R&S host instruments, offering exceptional versatility for both laboratory and field applications.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Rohde & Schwarz NRP-Z host interface (compatible with PC via NRP-Z3/Z4 USB adapters, or directly with NRP/NRP2 power meters) |
| Calibration Interval | 2 years |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 5 V DC via host interface |
| Operating Temperature | 0 °C to +50 °C |
| Dimensions (W×H×D) | 48 mm × 30 mm × 137 mm |
| Weight | 0.14 |
| Integrated Cable Length | 1.5 m |
Measurement Ranges & Power Specifications
| Parameter | Value |
|---|---|
| Frequency Range Minimum | 10 MHz |
| Frequency Range Maximum | 18 GHz |
| Power Measurement Range Minimum | -67 dBm (200 pW) |
| Power Measurement Range Maximum | +23 dBm (200 mW) |
| Maximum Continuous Input Power | 400 mW (+26 dBm) |
| Maximum Peak Input Power | 10 W (for duration < 10 µs) |
| Maximum DC Input Voltage | 20 V |
Sensor Technology & Architecture
| Parameter | Value |
|---|---|
| Sensor Detection Type | Three-path diode power sensor |
| Measurement Modes Supported | Continuous Average |
| Dynamic Range | 90 dB |
RF Port Characteristics
| Parameter | Value |
|---|---|
| Input Impedance | 50 Ω |
| RF Connector Type | N-type |
| Connector Sex | Male |
| Maximum SWR (10 MHz to 2.4 GHz) | < 1.11 |
| Maximum SWR (2.4 GHz to 8.0 GHz) | < 1.16 |
| Maximum SWR (8.0 GHz to 12.4 GHz) | < 1.20 |
| Maximum SWR (12.4 GHz to 18.0 GHz) | < 1.23 |
Meter Compatibility & System Integration
| Parameter | Value |
|---|---|
| Compatible Power Meter Models | R&S NRP, NRP2, NRX, and various R&S signal generators/analyzers |
Environmental Parameters
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +70 °C |
Performance
| Parameter | Value |
|---|---|
| Measurement Speed | Up to 1500 readings/s (continuous average) |
| Zero Set | 115 pW |
| Zero Drift | 15 pW (over 1 hour at constant temperature) |
Accuracy
| Parameter | Value |
|---|---|
| Linearity | 1.5% (15 °C to 35 °C) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Host Connector Type | 8-pole Rohde & Schwarz power sensor connector |
Measurement Uncertainty
| Parameter | Value |
|---|---|
| Calibration Uncertainty (10 MHz to 100 MHz) | 1.4% (0.06 dB) |
| Calibration Uncertainty (100 MHz to 8 GHz) | 1.5% (0.07 dB) |
| Calibration Uncertainty (8 GHz to 12.4 GHz) | 1.8% (0.08 dB) |
| Calibration Uncertainty (12.4 GHz to 18 GHz) | 2.0% (0.09 dB) |
Environmental
| Parameter | Value |
|---|---|
| Operating Altitude | 4600 m |
| Storage Altitude | 15000 m |
| Vibration Resistance (Random) | 10 Hz to 500 Hz, 1.9 g (RMS) |
| Shock Resistance | 40 g shock spectrum |
Standards & Compliance
| Parameter | Value |
|---|---|
| EMC Standards | EN 61326-1, EN 55011 (Class B) |
| Safety Standards | EN 61010-1 |
Triggering
| Parameter | Value |
|---|---|
| Trigger Sources | Internal, External, Software (Bus) |
Technology
Three-path diode sensor technology
Applications
RF and Microwave Power Measurement
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