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Model ND-1NM is a phase noise detector module that may be used to measure AM or PM noise. The
module has a proprietary noise detector that can be used to make very high-resolution single channel or dual
channel measurements. Dual-channel noise analysis will allow an effective reduction of at least 10 dB and
up to 20 dB from the system noise floor. The RF port of the noise detector has an adjustable attenuator that
may be used to adjust the level of high power signals. RF level measurements are made on both the RF and
LO inputs. The low noise IF amplifier has variable gain and bandwidth settings to accommodate different
measurement requirements and a calibration input is available for automatic gain calibration. The ND-1NM also
includes an adjustable bandwidth phase-lock loop that can be used when measuring oscillators to lock the
reference and device under test.
The ND-1NM plugs into the NMS mainframe and requires one of the Phase Noise Measurement System
Controllers. The NMSC-1 provides Fourier noise analysis from DC to 1 MHz from the carrier. The NMSC-2
extends the Fourier frequency analysis range to 10 MHz. The ND-1NM uses two slots of the system
mainframe. ND-1 Users Manuals
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| Features | Applications |
|---|
- Ultra-low system noise floor
- RF bandwidth: 1 MHz to 1 GHz
- Integrated PLL and calibration port
- Integrated RF level meter
|
- Amplitude and phase noise measurements
- Characterizations of components
|
| Specifications |
| Parameter | Conditions | Min | Typ | Max | Units |
|---|
| RF measurement range | Carrier level +7 to +17 dBm | - | 1-1000 | - | MHz |
| Signal level measurement range | | - | -25 to +25 | - | dBm |
| IF bandwidth | Low
High | -
-
- | DC - 400
0.001 - 1 | -
-
- | kHz
MHz |
| IF gain | DC, low
DC, high
AC, low
AC, high | -
-
-
- | +45
+65
+45
+65 | -
-
-
- | dB |
| PLL tuning bandwidth | Carrier level +7 to +17 dBm | - | 0.1-100 | - | Hz |
| System residual PM noise @ 5 MHz, +13 dBm carrier | Fourier frequency
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz |
-
-
-
-
-
- |
-150
-160
-170
-175
-179
-179 |
-145
-155
-165
-171
-175
-175 | dBc/Hz |
|
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