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
116
4/30/02
Model 9003, 9004, 9009, 9010, & 9011 dc to 18.0 GHz
Manual Step Attenuators 2 Watt
Ruggedized SMA Connector
Features
oBroadband - Available in a choice of frequency ranges:
dc to 4, dc to 8, dc to 12.4 and dc to 18 GHz.
oWide 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.
oEnvironmental - Designed to meet most environmen-
tal requirements of MIL-A-24215 (Vibration, Shock,
Relative Humidity to 95% and Altitude).
oIn-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 bidi-
rectional.
oPrecise 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).
oExcellent Repeatability and Long Switch Life.
oCustom Configurations Available Upon Request.
oHighly Accurate Detent Stepping - Direct drive of
attenuator drums eliminates gears and provides for
excellent repeatability.
oSafety 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.
Description
The Model 9000 series Step Attenuators are broadband
miniature step attenuators that provide excellent perfor-
mance characteristics suitable for use in high reliability 50
ohm systems and applications requiring extra-small compo-
nents for the precision control of signal levels. The Model
9000 series can be used either as input or output attenua-
tors 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 specifica-
tion 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 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 9009, 9010 9003
Range (GHz) 9011 9004
dc - 4 1.25 1.35
dc - 18 1.60 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
TEMPERATURE COEFFICIENT: < 0.0004 dB/dB/°C
TEMPERATURE RANGE:
Operating: 0°C to + 54°C
Nonoperating: -54°C to +54°C
Specifications--con’t
CALIBRATION: Insertion Loss data is supplied as follows.
Other test data can be supplied at additional cost.
dc to 4 GHz: At 50 MHz and 4 GHz
dc to 18 GHz: At 50 MHz, 4, 8, 12 and 18 GHz
INCREMENTAL PHASE SHIFT: ~0.5° per dB per GHz
REPEATABILITY: Better than 0.05 dB across frequency
band for switch life
SWITCH LIFE: Over 1,000,000 steps
SHAFT ROTATION: Clockwise for increasing attenuation.
CONSTRUCTION:
Drum Assembly: Aluminum alloy
Housing: Phenolic or aluminum
Control Shaft: Stainless steel
Connector: Stainless steel
Knob: Supplied with control knob
INDEXING: 36°
DRUM CONFIGURATIONS:
Single Drum: 9009, 9010, 9011
Dual Drum: 9003, 9004
MAXIMUM INSERTION LOSS (dB):
Frequency Model No.
Range
(GHz) 9009 9003 9004 9010 9011
dc - 4 0.3 0.6 0.6 0.4 0.5
4 - 8 0.5 0.8 0.8 0.5 0.6
8 - 12.4 0.7 1.0 1.0 0.7 0.7
12.4 - 18 1.0 1.5 1.5 1.0 1.0
INCREMENTAL INSERTION LOSS (+dB):
Model dB Frequency Range (GHz)
Number Range dc-4 dc-18
9009 1-9 0.3 0.5
9003 1-9 0.3 0.5
10-19 0.7 1.0
20-29 0.9 1.2
30-39 1.0 1.4
40-49 1.1 1.5
50-59 1.2 1.7
60-69 1.3 1.9
9004 1-9 0.3 0.5
10-19 0.7 1.0
20-29 0.9 1.2
30-39 1.0 1.4
40-49 1.1 1.5
50-59 1.2 1.7
60-69 1.3 1.9
70-79 1.4 2.1
80-89 1.5 2.3
90-99 1.6 2.5
9010 10 0.3 1.0
20 0.3 1.0
30 0.4 1.0
40 0.5 1.2
50 0.7 1.5
60 0.8 1.8
9011 10 0.3 1.0
20 0.3 1.0
30 0.4 1.0
40 0.5 1.2
50 0.7 1.5
60 0.8 1.8
70 0.9 2.1
80 1.0 2.3
90 1.2 2.5
NA=Model no longer available.
CONNECTOR: SMA connector per MIL-STD-348 interface
dimensions - mate nondestructively with MIL-C-39012 con-
nector. Front and rear SMA connector available in either
standard or right-angle configuration, connector sex is
optional as follows:
Connector Options Type/Description
1 SMA, Female
2 SMA, Male*
3 SMA, Female, right-angle
4 SMA, Male, right-angle
*Standard male SMA connector not available as J1 connector.
WEIGHT: 9009 680 g (2.4 oz)
9010 160 g (5.7 oz)
9011 200 g (7.1 oz)
9003 260 g (9.0 oz)
9004 290 g (10.4 oz)
MODEL NUMBER DESCRIPTION:
Example:
AC9011 - XX -XX
Basic
Model
Number
Maximum
Attenuation
Value (dB)
Connector Options*
1st digit is J1 side (front)
2nd digit is J2 side (rear)
Frequency
Range
(GHz)**
** Frequency Range Available Models
dc-4.0 GHz (AC) AC9003, AC9004, AC9009, AC9010, AC9011
dc-8.0 GHz (AD) No longer available, order AF as replacement
dc-12.4 GHz (AE) No longer available, order AF as replacement
dc-18.0 GHz (AF) AF9003, AF9004, AF9009, AF9010, AF9011
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
117
4/30/02
PHYSICAL DIMENSIONS:
Model No. DIM A DIM B
9003 96.3 (3.79) - - -
9004 106.4 (4.19) - - -
9009 28.7 (1.13) 3.25 (0.125)
9010 41.4 (1.63) 6.35 (0.250)
9011 51.6 (2.03) 6.35 (0.250)
NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified.
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
118
4/30/02
