
Typical SWR of a Model 4M-10
Frequency (GHz)
3M
4M
dc - 4
1.15
4 - 8
1.20
8 - 12.4
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
sec 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
7 - 10
+ 0.30
+ 0.50
20
+ 0.50
+ 0.70
30, 40
+ 0.75
+ 1.00
50, 60
+ 1.00
+ 2.00
Features
o Rugged injection molded connectors.
o Designed to meet environmental requirements of
MIL-A-3933.
o Usable to 22 GHz.
Specifications
NOMINAL IMPEDANCE: 50
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
1 -10, 20
30.5 (1.20)
30, 40, 50, 60
47.0 (1.85)
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
Typical Attenuation Performance of 4M-10
5305 Spectrum Drive, Frederick, MD 21703-7362
s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116
web: www.weinschel.com
s email: sales@weinschel.com
23
Weinschel
CORPORA TION
5/25/99