Weinschel
C O R P O R A T I O N
Model 77
Medium Power Fixed Coaxial Attenuators
Bi-directional Design, 7/16 Connectors
dc to 5.0 GHz
25 Watts
NEW
POWER COEFFICIENT:
<0.002 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
TEMPERATURE RANGE:
-55 °C to 125 °C
CALIBRATION:
Insertion loss test data supplied at 0.05,
1.0, 2.0, 3.0 and 4.0 GHz. Other test data can be provided
at additional cost.
CONNECTORS:
7/16 connector that conforms to DIN
47223, IEC 169-4, VG 95250, CECC 22 190.
Connector Options
1
2
Type/Description
7/16 Female
7/16 Male
Features
o
o
o
Optimized for Wireless OEM & Test Applications.
Low Intermodulation Design.
Designed to meet environmental requirements of
MIL-A-3933.
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
dc to 5.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal ATTN (dB)
3, 6
10, 20, 30
Deviation (dB)
+ 0.50
+ 0.80
CONSTRUCTION:
Black, finned aluminum body, silver
plated brass connectors
WEIGHT:
280 g (10 oz.) maximum
PHYSICAL DIMENSIONS:
MAXIMUM SWR:
Frequency (GHz)
dc - 3
3-5
SWR
1.20
1.30
Connector
7/16 Male
7/16 Female
DIM A
32.3 (1.27)
30.7 (1.21)
INTERMODULATION:
3rd Order Through Levels (IM3),
-110 dBc maximum with two input signals @ 869 MHz and
891 MHz with average carrier power levels of +41 dBm
each.
POWER RATING (mounted horizontally):
25 watts
average (bi-directional)
to 25°C ambient temperature,
derated linearly to 2.5 watts @ 125°C. Note: 3 dB model
can handle 50 Watts
average (bi-directional).
5 kilowatt
peak
(5
µsec
pulse width; 0.25% duty cycle).
NOTE:
All dimensions are given in mm (inches) and tolerances
are X.X+0.8 (0.03) unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
77 - XX - XX*
Basic
Model
Number
Attenuation
Value (dB)
Connector Options
1st digit is J1 side
2nd digit is J2 side
*Unit is bi-directional and full power may be applied to either J1 or J2.
42
5/4/00
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
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