Weinschel
C O R P O R A T I O N
Model 9003, 9004, 9009, 9010, & 9011
Manual Step Attenuators
dc to 18.0 GHz
2 Watt
Ruggedized SMA Connector
Description
Features
o Broadband - Available in a choice of frequency ranges:
dc to 4, dc to 8, dc to 12.4 and dc to 18 GHz.
o Wide Choice of Attenuation Ranges - A choice of five
standard attenuation ranges is available: 0 to 9.0, 0 to
69 and 0 to 99 dB in 1 dB steps, and 0 to 60 and 0 to
90 dB in 10 dB steps.
o Environmental - Designed to meet most environmental requirements of MIL-A-24215 (Vibration, Shock,
Relative Humidity to 95% and Altitude).
o In-line Configuration - Passivated stainless steel SMA
connector are set parallel with control shaft (except
units with right angle connector) to reduce volume for
applications where space is critical. All models are bidirectional.
o Precise Incremental Attenuation Accuracy - Model
9000 series has flat frequency response and small
deviation from nominal attenuation at all settings (e.g.,
deviation is only +2.5 dB at 99 dB setting at 18 GHz).
o Excellent Repeatability and Long Switch Life.
o Custom Configurations Available Upon Request.
o Highly Accurate Detent Stepping - Direct drive of
attenuator drums eliminates gears and provides for
excellent repeatability.
o Safety Mechanical Stop - A mechanical stop between
maximum and 0 attenuation positions on all models
except 0-9 dB unit is provided to prevent large power
changes at attenuator output from damaging sensitive
equipment.
The Model 9000 series Step Attenuators are broadband
miniature step attenuators that provide excellent performance characteristics suitable for use in high reliability 50
ohm systems and applications requiring extra-small components for the precision control of signal levels. The Model
9000 series can be used either as input or output attenuators in signal sources, receivers, field strength meters,
spectrum analyzers, etc.
The SMA connector furnished on all models are available in
either standard or right-angle configuration. The sex of front
and rear connector is optional (refer to connector specification for specific combinations available). A knob(s), marked
appropriately, is supplied with each unit.
Specifications
NOMINAL IMPEDANCE: 50 Ω
FREQUENCY RANGE (add Model No. Prefix to
Designate Range):
All Models:
dc to 4.0 GHz (AC)
dc to 8.0 GHz (AD)
dc to 12.4 GHz (AE)
dc to 18.0 GHz (AF)
Standard Incremental Attenuation Range:
Model 9009:
0 to 9 dB in 1 dB steps
Model 9003:
0 to 69 dB in 1 dB steps
Model 9004:
0 to 99 dB in 1 dB steps
Model 9010:
0 to 60 dB in 10 dB steps
Model 9011:
0 to 90 dB in 10 dB steps
MAXIMUM SWR:
Frequency
Range (GHz)
dc
dc
dc
dc
-
4
8
12.4
18
9009, 9010
9011
9003
9004
1.25
1.35
1.50
1.60
1.35
1.40
1.50
1.75
POWER RATING: 2 watts average to 25°C ambient
temperature, derated linearly to 1 watt @ 54°C. 200 watts
peak (5 µsec pulse width; 0.5% duty cycle)
POWER COEFFICIENT: < 0.005dB/dB/watt
116
6/6/00
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
