NC346 Broadband AWGN up to 55 GHz0 pages

Data Sheet

NC346

10 MHz to 55 GHz

Broadband Calibrated Noise Sources for
Noise Figure Measurements

Specifications
Calibrationt

1 GHz steps

The Noisecom NC346 Series is designed for precision noise figure

Temperature coefficientt

Less than 0.009 dB/°C

measurement applications. The vswr has been improved, reduc-

Operating temperature t

ing multiple reflections of the test signals and significantly in-

Input powert

creasing the measurement accuracy of most noise figure set-ups.

for NC346 A, B & D

VSWRt

Less than 1.15:1

0°C to +55°C
+28 VDC ±2 VDC at 15 mA typical

The NC346 Series noise sources have broadband coverage and

from 10 MHz – 5 GHz for units

extremely good temperature and voltage stability, for the finest

with 5 – 7 dB or 14 –16 dB ENR

noise figure meter-compatible laboratory standards. Outputs

Regulatort

Built-in

of 6, 15.5 and 22 dB enr are available, allowing the units to ac-

Voltage coefficientt

< 0.002 dB/%∆V

curately measure noise figures up to 20, 30 and 36 dB respectively.
The return loss of the noise sources is measured in both the on
and off states and is included in the calibration report provided
with each noise source up to 40 GHz. Each noise source is also
supplied with calibration data traceable to nist.

VSWR

Typical VSWR for NC346C

1.35:1
1.25:1
1.15:1
1.05:1
0.03

5

18

26.5

Frequency (GHz)

Count on the Noi