| Rohde and Schwarz NRPC18 Specifications |
| POWER STANDARDS |
| R&S® |
NRPC18 |
| Frequency Range |
|
DC to 18 GHz |
| Test Port Power Range |
|
10 µW to 100 mW (-20 dBm to +20 dBm) |
| Max. Input Power |
Average/peak envelope |
0.5 W (+27 dBm) continuous/40 W (+46 dBm) for max. 1 µs |
| Test Port Connector |
|
N female |
Test Port Equivalent SWR
(equivalent reflection coefficient Γeq) |
DC to 4.0 GHz
> 4.0 GHz to 8.0 GHz
> 8.0 GHz to 12.4 GHz
> 12.4 GHz to 18.0 GHz
> 18.0 GHz to 26.5 GHz
> 26.5 GHz to 33.0 GHz
> 33.0 GHz to 40.0 GHz
> 40.0 GHz to 50.0 GHz
> 50.0 GHz to 67.0 GHz |
< 1.07 (< 0.035)
< 1.12 (< 0.057)
< 1.12 (< 0.057)
< 1.17 (< 0.078) |
| Uncertainty of Γeq 1) |
DC to 4.0 GHz
> 4.0 GHz to 8.0 GHz
> 8.0 GHz to 12.4 GHz
> 12.4 GHz to 18.0 GHz
> 18.0 GHz to 26.5 GHz
> 26.5 GHz to 33.0 GHz
> 33.0 GHz to 40.0 GHz
> 40.0 GHz to 50.0 GHz
> 50.0 GHz to 67.0 GHz |
0.006
0.008
0.008
0.010 |
| Zero Offset |
After external zeroing2) |
< 28 nW (typ. 15 nW at 1 GHz) |
| Zero Drift 3) |
|
< 8 nW |
| Measurement Noise 4) |
|
< 28 nW (typ. 15 nW at 1 GHz) |
| Calibration Uncertainty 5), 6) |
DC to 1 MHz
> 1 MHz to < 10 MHz
≥ 10 MHz to 100 MHz
> 100 MHz to 2.4 GHz
> 2.4 GHz to 8.0 GHz
> 8.0 GHz to 12.4 GHz
> 12.4 GHz to 18.0 GHz
> 18.0 GHz to 26.5 GHz
> 26.5 GHz to 33.0 GHz
> 33.0 GHz to 40.0 GHz
> 40.0 GHz to 50.0 GHz
> 50.0 GHz to 67.0 GHz |
0.28% (0.012 dB)
0.33% (0.014 dB)
0.33% (0.014 dB)
0.50% (0.022 dB)
0.68% (0.029 dB)
0.84% (0.036 dB)
1.10% (0.048 dB) |
| Linearity 7) |
+23°C ±3.3°C |
0.1% (0.004 dB) from -20 dBm to +10 dBm |
| 1) Denotes the estimated magnitude of the complex-valued difference between the equivalent test port reflection coefficient and its calibrated value (expressed with a coverage factor of two). Uncertainties of reflection coefficients need to be known for the calculation of the residual mismatch uncertainty after vector-corrected power calibration (gamma correction). The uncertainties given for the test port equivalent reflection coefficient are valid only after calibration at Rohde & Schwarz. |
| 2) Specifications expressed as an expanded uncertainty with a confidence level of 95% (two standard deviations). For calculating zero offsets at higher confidence levels, use the properties of the normal distribution (e.g. 99.7% confidence level for three standard deviations). |
| 3) Within one hour after zeroing, permissible temperature change ±1°C, following a two-hour warm-up of the power standard |
| 4) Two standard deviations at 10.24 s integration time in continuous average mode, with aperture time set to default value. The integration time is defined as the total time used for signal acquisition, i.e. the product of twice the aperture time and the averaging number. Multiplying the noise specifications by √(10.24 s/integration time) yields the noise contribution at other integration times. |
| 5) Limits of expanded uncertainty (k = 2) for the results delivered by the power standard for measurements performed at the calibration level (0 dBm) within a temperature range of +23°C ±3.3°C and at the calibration frequencies, referenced to the output power available on a perfectly matched load, within one year after calibration. Specifications include uncertainty of calibration, stability over time, temperature effect, zero offset and measurement noise (up to a 2σ value of 0.004 dB). |
| 6) Calibration frequencies: DC; from 10 MHz to 100 MHz in 10 MHz steps; from 250 MHz to the upper frequency limit in 250 MHz step. The power standard of R&S®NRPC18 is calibrated at additional frequencies: 9 kHz, 14 kHz, 20 kHz, 30 kHz, 50 kHz, 100 kHz, 200 kHz, 500 kHz, 1 MHz, 2 MHz, 5 MHz. |
| 7) Limits of expanded uncertainty (k = 2) for relative power measurements referenced to the calibration level (0 dBm), excluding zero offset, zero drift and measurement noise. |