Weinschel
C O R P O R A T I O N
Model 9003, 9004, 9009, 9010, & 9011
Manual Step Attenuators
Ruggedized SMA Connector
dc to 18.0 GHz
2 Watt
Description
The Model 9000 series Step Attenuators are broadband
miniature step attenuators that provide excellent perform-
ance 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 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
1.25
1.35
1.50
1.60
9003
9004
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
Weinschel
C O R P O R A T I O N
Specifications--cont
TEMPERATURE COEFFICIENT:
< 0.0004 dB/dB/°C
TEMPERATURE RANGE:
Operating:
0°C to + 54°C
Nonoperating:
-54°C to +54°C
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 8 GHz:
At 50 MHz, 4 and 8 GHz
dc to 12.4 GHz: At 50 MHz, 4, 8 and 12 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
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-8
dc-12.4
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
NA
0.3
0.3
0.7
1.0
1.1
1.2
1.4
1.6
NA
0.3
0.3
0.8
1.0
1.2
1.3
1.6
1.8
0.3
0.8
1.0
1.2
1.3
1.6
1.8
2.0
2.2
2.4
0.5
0.5
0.6
0.8
1.0
1.2
NA
dc-18
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
9010
0.4
0.4
0.5
0.6
0.8
0.9
0.4
0.4
0.5
0.6
0.8
0.9
1.1
1.2
1.4
MAXIMUM INSERTION LOSS (dB):
Frequency
Range
(GHz)
dc - 4
4-8
8 - 12.4
12.4 - 18
Model No.
9009
0.3
0.5
0.7
1.0
9003
0.6
0.8
1.0
1.5
9004
0.6
0.8
1.0
1.5
9010
0.4
0.5
0.7
1.0
9011
0.5
0.6
0.7
1.0
9011
NA
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.
NA=Model no longer available.
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)
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)
** 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
AD9003, AD9009, AD9010, AD9011
AE9003, AE9004, AE9009, AE9010
AF9003, AF9004, AF9009, AF9010, AF9011
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
117
5/25/99
PCB Design
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