| Rohde and Schwarz NRP-Z221 Specification |
| Frequency range |
R&S NRP-Z221 |
10 MHz to 18 GHz |
| Impedance matching(SWR) |
10 MHz to 2.4 GHz |
< 1.13 (1.11) |
( ): +15 °C to +35 °C |
| > 2.4 GHz to 8.0 GHz |
< 1.20 (1.18) |
| Power measurement range |
continuous average |
1.0 nW to 100 mW (-60 dBm to +20 dBm) |
| burst average |
1.0 µW to 100 mW (-30 dBm to +20 dBm) |
| timeslot/gate average |
3.0 nW to 100 mW (-55 dBm to +20 dBm) 1 |
| trace |
50 nW to 100 mW (-43 dBm to +20 dBm) 2 |
| Max. power |
average power |
0.4 W (+26 dBm), continuous |
| peak envelope power |
2.0 W (+33 dBm) for max. 10 µs |
| Measurement subranges |
path 1 |
-60 dBm to -5 dBm |
| path 2 |
-33 dBm to +20 dBm |
| Transition regions |
with automatic path selection 3 |
(-10 ± 1) dBm to (-4 ± 1) dBm |
| Dynamic response |
video bandwidth |
> 40 kHz (50 kHz) |
( ): +15 °C to +35 °C |
| single-shot bandwidth |
> 40 kHz (50 kHz) |
| rise time 10 %/90 % |
< 10 µs (8 µs) |
| Acquisition |
sample rate (continuous) |
133.358 kHz (default) or 119.467 kHz 4 |
| Triggering |
internal |
| threshold level range |
-33 dBm to +20 dBm |
| threshold level accuracy |
identical to uncertainty for absolute power measurements |
| threshold level hysteresis |
0 dB to 10 dB |
| dropout 5 |
0 s to 10 s |
| external |
see R&S NRX base unit, R&S NRP-Z3 USB adapter cable or R&S NRP-Z5 USB sensor hub |
| slope (external, internal) |
pos./neg. |
| delay |
-5 ms to +100 s |
| hold-off |
0 s to 10 s |
| resolution (delay, hold-off, dropout) |
sample period (= 8 µs) |
| source |
internal, external, immediate, bus, hold |
| Zero offset |
initial, without zeroing |
( ): typical at 1 GHz
+15 °C to +35 °C
[ ]: 8 GHz to 18 GHz |
| path 1 |
< 1.88 [2.0] (0.6) nW |
| path 2 |
< 0.94 [1.0] (0.3) µW |
| after external zeroing 6, 7 |
| path 1 |
< 370 [390] (290) pW |
| path 2 |
< 180 [190] (145) nW |
| Zero drift 8 |
path 1 |
< 140 [150] (0) pW |
| path 2 |
< 60 [65] (0) nW |
| Measurement noise 9 |
path 1 |
< 230 [240] (180) pW |
| path 2 |
< 110 [116] (90) nW |
| 1Specifications apply to timeslots/gates with a duration of 12.5 % referenced to the signal period (duty cycle 1:8). For other waveforms, the following equation applies: lower measurement limit = lower measurement limit for continuous average mode / √(duty cycle). |
| 2With a resolution of 256 pixels. |
| 3Specifications apply to the default transition setting of 0 dB. The transition regions can be shifted by as much as –20 dB using an adequate offset. |
| 4To prevent aliasing in the case of signals with discrete modulation frequencies between 100 kHz and 1 MHz. |
| 5Time span prior to triggering, where the trigger signal must be entirely below the threshold level in the case of a positive slope and vice versa in the case of a negative slope. |
| 6Specifications 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). |
| 7Specifications apply to zeroing with a duration of 4 s. Zeroing for more than 4 s lowers uncertainty correspondingly (half values for 16 s). |
| 8Within one hour after zeroing, permissible temperature change ±1 °C, following a two-hour warm-up of the power sensor. |