Fixed Coaxial Attenuators
Model 78
High Power, 7/16 Connectors
Bi-Directional Design!
POWER RATING (mounted horizontally):
50 watts
average (bi-directional)
to 25°C ambient temperature,
derated linearly to 10 watts @ 125°C. 5 kilowatt
peak
(5
μsec
pulse width; 0.5 % duty cycle).
POWER COEFFICIENT:
<0.00015 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
TEMPERATURE RANGE:
-55 °C to 125 °C
TEST DATA:
Swept data plots of SWR from 50 MHz to
6 GHz supplied.
dc to 6.0 GHz
50 Watts
Features
o
o
o
Optimized for Wireless OEM & Test Applications.
Low Intermodulation Design.
Designed to meet environmental requirements of
MIL-A-3933.
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
CONSTRUCTION:
Black, finned aluminum body, silver
plated brass connectors.
WEIGHT:
392 g (14 oz.) maximum
PHYSICAL DIMENSIONS:
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
dc to 6.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal ATTN (dB)
10, 20
30
MAXIMUM SWR:
Frequency (GHz)
dc - 3
3-5
SWR
1.20
1.30
Deviation (dB)
+ 1.00
+ 1.25
Connector
7/16 Male
7/16 Female
NOTE:
DIM A
32.3 (1.27)
30.7 (1.21)
3rd ORDER INTERMODULATION:
Reflected Levels (IM3),
-100 dBc and Through Levels (IM3), -110 dBc with two
input signals @ 869 MHz and 891 MHz with average
carrier power levels of +43 dBm each.
All dimensions are given in mm (inches) and tolerances
are X.X+0.8 (0.03) unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
78 - XX - XX*
Basic
Model
Number
Attenuation
Value (dB)
Connector Options
1st digit is J1 side
2nd digit is J2 side
*Unit is bi-directional & full power may be applied to either J1 or J2.
54
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.aeroflex.com/weinschel
s
email: weinschel-sales@aeroflex.com
Revision Date: 5/14/2014
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