Variable Attenuators
Models 9003, 9004, 9009, 9010 & 9011 dc to 18.0 GHz
Manual Step, Ruggedized SMA Connectors
2 Watt
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.
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 environmen-
tal 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 bidi-
rectional.
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.
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
Range (GHz)
dc - 4
dc - 18
9009, 9010
9011
1.25
1.60
9003
9004
1.35
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
143
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.weinschel.apitech.com
s
email: weinschel-sales@apitech.com
Revision Date:
10/2016
Variable Attenuators
Specifications--con’t
TEST DATA:
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
Range
(GHz)
dc - 4
dc - 18
Model No.
9009
0.3
1.0
9003
0.6
1.5
9004
0.6
1.5
9010
0.4
1.0
9011
0.5
1.0
9010
INCREMENTAL INSERTION LOSS (+dB):
Model
Number
9009
9003
dB
Range
1-9
1-9
10-19
20-29
30-39
40-49
50-59
60-69
1-9
10-19
20-29
30-39
40-49
50-59
60-69
70-79
80-89
90-99
10
20
30
40
50
60
10
20
30
40
50
60
70
80
90
Frequency Range (GHz)
dc-4
dc-18
0.3
0.3
0.7
0.9
1.0
1.1
1.2
1.3
0.3
0.7
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
0.3
0.3
0.4
0.5
0.7
0.8
0.3
0.3
0.4
0.5
0.7
0.8
0.9
1.0
1.2
0.5
0.5
1.0
1.2
1.4
1.5
1.7
1.9
0.5
1.0
1.2
1.4
1.5
1.7
1.9
2.1
2.3
2.5
1.0
1.0
1.0
1.2
1.5
1.8
1.0
1.0
1.0
1.2
1.5
1.8
2.1
2.3
2.5
9004
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*
SMA, Female, right-angle
3
4
SMA, Male, right-angle
*Standard male SMA connector not available as J1 connector.
9011
NA=Model no longer available.
WEIGHT:
9009
9010
9011
9003
9004
680
160
200
260
290
g
g
g
g
g
(2.4 oz)
(5.7 oz)
(7.1 oz)
(9.0 oz)
(10.4 oz)
MODEL NUMBER DESCRIPTION:
Example:
AC9011 - XX - XX
Frequency
Range
(GHz)**
Basic
Model
Number
Maximum
Attenuation
Value (dB)
Connector Options*
1st digit is J1 side (front)
2nd digit is J2 side (rear)
** Frequency Range
dc-4.0 GHz (AC)
dc-8.0 GHz (AD)
dc-12.4 GHz (AE)
dc-18.0 GHz (AF)
Available Models
AC9003, AC9004, AC9009, AC9010, AC9011
No longer available, order AF as replacement
No longer available, order AF as replacement
AF9003, AF9004, AF9009, AF9010, AF9011
144
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.weinschel.apitech.com
s
email: weinschel-sales@apitech.com
Revision Date:
10/2016
DIY/Open Source Hardware
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