Typical SWR of a Model 4M-10
Frequency (GHz) 3M 4M
dc - 4 1.15 1.15
4 - 8 1.20 1.20
8 - 12.4 1.25 1.25
12.4 - 18 - - - 1.35
Model 3M dc to 12.4 GHz
Model 4M dc to 18.0 GHz
Fixed Coaxial Attenuators 2 Watts
Ruggedized SMA Connectors
POWER RATING: 2 watts average to 25°C ambient
temperature, derated linearly to 0.5 watts at 125°C.
500 watts peak (5 µsec pulse width; 0.2% duty cycle).
POWER COEFFICIENT: < 0.005 dB/dB/watts
TEMPERATURE COEFFICIENT: < 0.0004 dB/dB/°C
TEMPERATURE RANGE: -55°C to +125°C
CALIBRATION: Insertion Loss and SWR Testing performed
across frequency range. Test data available at additional
cost.
CONNECTORS: SMA connectors per MIL-STD-348 inter-
face dimensions - mate nondestructively with MIL-C-39012
connectors.
CONSTRUCTION: Passivated stainless steel body and
connectors; gold plated beryllium copper contacts.
WEIGHT (Both Models):
dB VALUE WEIGHT (Net)
1 - 10, 20 10 g (0.35 oz)
30, 40, 50, 60 20 g (0.70 oz)
PHYSICAL DIMENSIONS:
Nominal ATTN (dB) 3M 4M
1 - 2 + 0.30 + 0.50
3 - 6 + 0.30 + 0.30
7 - 10 + 0.30 + 0.50
20 + 0.50 + 0.70
30, 40 + 0.75 + 1.00
50, 60 + 1.00 + 2.00
Features
oRugged injection molded connectors.
oDesigned to meet environmental requirements of
MIL-A-3933.
oUsable to 22 GHz.
Specifications
NOMINAL IMPEDANCE: 50 Ω
FREQUENCY RANGE: Model 3M: dc to 12.4 GHz
Model 4M: dc to 18.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
NOTE: All dimensions are given in mm (inches) and are
maximum, unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
*4M - XX
Basic
Model
Number
Attenuation
Value (dB)
MAXIMUM SWR:
1.00
1.10
1.20
1.30
1.40
0.05 2.50 5.00 7.50 10.00 12.50 15.00 17.50
Specification
*Add Prefix M for double male and F for double female connectors.
dB VALUE DIM A + 0.5 (0.02)
1 -10, 20 30.5 (1.20)
30, 40, 50, 60 47.0 (1.85)
-10.75
-10.50
-10.25
-10.00
-9.75
-9.50
-9.25
0.05 2.50 5.00 7.50 10.00 12.50 15.00 17.50
Specification Limit
Specification Limit
Typical Attenuation Performance of 4M-10
5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116
web: www.weinschel.com email: sales@weinschel.com
25
10/23/01