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www.noisecom.com
nc346 series
General Specifications:
Calibration 1 GHz steps
Temperature Less than 0.009 dB/˚C
coefficient
Operating 0˚C to +55˚C
temperature
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
Regulator Built-in
Voltage coefficient Less than
0.002 dB/%∆V
Specifications subject to change without notice.
Noise Com's NC346 Series is designed for
precision noise figure measurement applications.
The VSWR has been improved, reducing multiple
reflections of the test signals and significantly
increasing the measurement accuracy of most
noise figure set-ups.
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. Each
NC346 is packaged
in an attractive wooden
box for maximum protection during
shipment.
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.
BROADBAND
CALIBRATED NOISE
SOURCES FOR
NOISE FIGURE
MEASUREMENTS
10 MHz to 60 GHz
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)
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To order call 201-261-8797
NC346 SERIES
NOISE FIGURE MEASUREMENT DEVICES
3
DIM
CONNECTOR A (in.)
SMA Male 0.50
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
WAVEGUIDE FLANGE CHART
WAVEGUIDE DIM DIM DIM DIM
TYPE A (in.) B (in.) C (in.) D (in.)
WR75 5.25 1.50 SQ .98 1.60
WR90 5.68 1.68 SQ 72 1.50
WR229 6.02 3.87 1.10 2.09
NC346 COAXIAL SERIES
MODEL RF FREQUENCY OUTPUT VSWR (maximum @ on/off)
CONNECTOR (GHz) ENR (dB) 0.01 - 5 5 - 18 18 - 26.5 26.5 - 40 40 - 60 I (max)
GHz GHz GHz GHz GHz (mA)
NC346A SMA Male 0.01 - 18.0 5 - 7 1.15:1 1.25:1 30
NC346A Precision APC3.5 Male 0.01 - 18.0 5 - 7 1.15:1 1.25:1 30
NC346A Option 1 N Male 0.01 - 18.0 5 - 7 1.15:1 1.25:1 30
NC346A Option 2 APC7 0.01 - 18.0 5 - 7 1.15:1 1.25:1 30
NC346A Option 4 N Female 0.01 - 18.0 5 - 7 1.15:1 1.25:1 30
NC346B SMA Male 0.01 - 18.0 14 - 16 1.15:1 1.25:1 30
NC346B Precision APC3.5 Male 0.01 - 18.0 14 - 16 1.15:1 1.25:1 30
NC346B Option 1 N Male 0.01 - 18.0 14 - 16 1.15:1 1.35:1 30
NC346B Option 2 APC7 0.01 - 18.0 14 - 16 1.15:1 1.25:1 30
NC346B Option 4 N Female 0.01 - 18.0 14 - 16 1.15:1 1.35:1 30
NC346C APC3.5 Male 0.01 - 26.5 13 - 17 1.15:1 1.25:1 1.35:1 30
NC346D SMA Male 0.01 - 18.0 19 - 25* 1.50:1 1.50:1 30
NC346D Precision APC3.5 Male 0.01 - 18.0 19 - 25* 1.50:1 1.50:1 30
NC346D Option 1 N Male 0.01 - 18.0 19 - 25* 1.50:1 1.75:1 30
NC346D Option 2 APC7 0.01 - 18.0 19 - 25* 1.50:1 1.50:1 30
NC346D Option 3 N Female 0.01 - 18.0 19 - 25* 1.50:1 1.75:1 30
NC346E APC3.5 Male 0.01 - 26.5 19 - 25* 1.50:1 1.50:1 1.50:1 30
NC346Ka K Male** 0.10 - 40.0 10 - 17 1.25:1 1.30:1 1.40:1 1.50:1 30
NC346V V Male*** 0.10 - 55.0 7 - 21 1.50:1 1.50:1 1.75:1 2.00:1 2.50:1 30
* Flatness better than ±2 dB ** Compatible with SMA and APC3.5 *** Compatible with APC2.4, data provided to 60 GHz
NC346 Coaxial Series
Dimensions (inches)
NC346 Waveguide Series (inches)
NC346 WAVEGUIDE SERIES
WITH BUILT-IN ISOLATOR*
MODEL FLANGE FREQUENCY ENR VSWR I (max)
(GHz) (dB) (on/off) (mA)
NC346B-WR229 CPR229F 3.7 - 4.2 14 - 16** 1.20:1 30
NC346B-WR90 UG39/U 8.5 - 9.6 14 - 16** 1.20:1 30
NC346B-WR75 UBR120 10.5 - 13.0 14 - 16** 1.20:1 30
* Inquire for other flanges or waveguide sizes
** Flatness better than ±0.15 dB
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