Noisecom's NC346 Series is designed for precision noise figure measurement applications. Each module's low VSWR reduces multiple reflections and significantly increases the measurement accuracy for most noise figure test configurations.
The NC346 Series noise sources have broadband coverage and extremely good temperature and voltage stability, for the finest noise figure meter-compatible laboratory standards. Outputs of 6, 15.5 and 22 dB enr are available, allowing the units to accurately measure noise figures up to 20, 30 and 36 dB respectively.
| Key Features |
| Broadband coverage |
| Extremely good temperature stability |
| Superior voltage stability |
| Noise figure meter-compatible |
| Specifications |
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| NC346 Coaxial Series |
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| Feature | Parameter |
| Calibration | 1 GHz steps |
| Temperature Coefficient | Less than 0.009 dB/°C |
| Operating Temperature | 0°C to +55°C |
| Input power | +28 VDC ±2 VDC at 15 mA typical for NC346 A, B & D |
| VSWR | Less than 1.15:1
From 10 MHz – 5 GHz for units
With 5 – 7 dB or 14 –16 dB ENR
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| Regulator | Built-in |
| Voltage Coefficient | < 0.002 dB/%∆V |
| Specifications |
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| NC346 Coaxial Series |
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| Model Overview |
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| Model | RF Connector | Frequency | Output ENR (dB) |
| NC346A | SMA Male | 10MHz - 18GHz | 5 - 7 |
| NC346A Precision | APC3.5 Male | 10MHz - 18GHz | 5 - 7 |
| NC346A Option 1 | N Male | 10MHz - 18GHz | 5 - 7 |
| NC346A Option 2 | APC7 | 10MHz - 18GHz | 5 - 7 |
| NC346A Option 4 | N Female | 10MHz - 18GHz | 5 - 7 |
| NC346B | SMA Male | 10MHz - 18GHz | 14 - 16 |
| NC346B Precision | APC3.5 Male | 10MHz - 18GHz | 14 - 16 |
| NC346B Option 1 | N Male | 10MHz - 18GHz | 14 - 16 |
| NC346B Option 2 | APC7 | 10MHz - 18GHz | 14 - 16 |
| NC346B Option 4 | N Female | 10MHz - 18GHz | 14 - 16 |
| NC346C | APC3.5 Male | 10MHz - 26.5GHz | 13 - 17 |
| NC346D | SMA Male | 10MHz - 18GHz | 19 - 25* |
| NC346D Precision | APC3.5 Male | 10MHz - 18GHz | 19 - 25* |
| NC346D Option 1 | N Male | 10MHz - 18GHz | 19 - 25* |
| NC346D Option 2 | APC7 | 10MHz - 18GHz | 19 - 25* |
| NC346D Option 3 | N Female | 10MHz - 18GHz | 19 - 25* |
| NC346E | APC3.5 Male | 10MHz - 26.5GHz | 19 - 25* |
| NC346Ka | K Male** | 100MHz - 40GHz | 10 - 17 |
| NC346V | V Male | 100MHz - 55GHz | 7 - 21 |
| NC346Vx | V Male | 100MHz - 67GHz | 7 - 21 |
Note:
* Flatness better than ±2 dB
** Compatible with SMA and APC3.5
| Specifications |
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| NC346 Coaxial Series |
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| Connector Overview |
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| Connector | DIM A (in.) |
| SMA Male | 0.50 (0.65 max) |
| APC 3.5 Male | 0.50 |
| N Male | 1.14 |
| APC 7 | 1.30 |
| N Female | 0.94 |
| K Male | 0.46 |
| V Male | 0.85 |
